Diesel engine high pressure pump

Abstract

This utility model discloses a high-pressure pump for a diesel engine, including a support device for support and protection. A support base is provided at the bottom of the support device. A transmission device is fixedly mounted on the upper surface of the support base near the rear. The transmission device is used for stepless speed regulation. The improved speed-regulating motor of this utility model adopts a series layout and is horizontally mounted on the transmission shaft between the power output end of the diesel engine module and the high-pressure water pump / centrifugal pump. This replaces the gearbox and high-speed shaft assembly located in this position in the original structure, realizing the integrated function of power transmission and speed regulation.

Description

Technical Field

[0001] This utility model relates to the technical field of diesel engine high-pressure pump equipment, specifically a diesel engine high-pressure pump. Background Technology

[0002] The diesel engine high-pressure water pump mainly uses the reciprocating rotation of the plunger or impeller driven by the internal diesel engine to pressurize the water (or other fluids) entering the pump chamber. It forms a "cooperative working" mode with the centrifugal water pump: the centrifugal water pump is responsible for drawing low-pressure fluid from the water source (such as water tank or well) and transporting it to the inlet of the high-pressure water pump. The high-pressure water pump then pressurizes it to the set pressure and outputs it. It is mainly used in scenarios that require high-pressure fluids, such as high-pressure irrigation in agriculture, cleaning of industrial equipment, and emergency water supply for fire fighting.

[0003] The existing diesel engine high-pressure pump has a transmission structure of multi-stage mechanical transmission, such as crankshaft → gearbox → high-speed shaft. However, due to the fixed gear ratio, the pump speed is limited by the traditional gear transmission, and the output pressure cannot be flexibly adjusted. This makes it impossible for the equipment to maintain efficient operation under different working conditions, which reduces the practical performance of the diesel engine high-pressure pump. Therefore, there is an urgent need for a diesel engine high-pressure pump to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a high-pressure pump for diesel engines to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a diesel engine high-pressure pump, including a support device for support and protection, wherein a support base is provided at the bottom of the support device.

[0006] A transmission device is fixedly installed on the upper end face of the support base near the rear, and the transmission device is used for stepless speed regulation.

[0007] The filter has two sets, and both sets of the filter are located on the upper side of the support base. A diesel tank is located on the upper front of the support base opposite the transmission device, and a hydraulic oil radiator is located on top of the diesel tank. A water tank is located on the upper side of the support base near the diesel tank.

[0008] Preferably, the support device includes a support frame, with second protective doors on both sides of the support frame and two sets of first protective doors at the rear of the support frame.

[0009] Preferably, the transmission device includes a shock-absorbing base for support. A diesel engine radiator is provided near the rear of the upper end face of the shock-absorbing base. A diesel engine module is provided in the middle of the upper end face of the shock-absorbing base. A speed-regulating motor is provided at the output end of the inner end face of the transmission device. A motor output shaft is provided at the output end of the speed-regulating motor. A high-pressure water pump is fixedly provided at the frontmost part of the upper end face of the shock-absorbing base. A battery holder is provided on one side of the upper end face of the shock-absorbing base. A pump rotating plate is hinged to the other side of the upper end face of the shock-absorbing base. A centrifugal water pump is provided on the upper end face of the pump rotating plate. Shock-absorbing pads are provided at equal intervals at the bottom of the shock-absorbing base.

[0010] Preferably, the shock-absorbing base is fixedly disposed on the upper end face of the support base, and the support base, by being disposed at the bottom of the inner end face of the support frame, can provide a stable support platform for the operation of the diesel engine radiator, diesel engine module and high-pressure water pump, thereby improving the stability of equipment operation.

[0011] Preferably, the speed-regulating motor drives the high-pressure water pump through the motor output shaft. The speed-regulating motor can flexibly adjust the pressure of the high-pressure water pump through the motor output shaft, thereby improving the adaptability of the equipment.

[0012] Preferably, the shock-absorbing pads are made of rubber. Multiple sets of shock-absorbing pads can provide sufficient buffering force for the diesel engine module during operation, thereby reducing the noise of the diesel engine module during operation and improving the stability of operation.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The improved speed-regulating motor of this utility model adopts a series layout and is horizontally installed on the transmission shaft between the power output end of the diesel engine module and the high-pressure water pump centrifugal pump, replacing the gearbox and high-speed shaft assembly located in the original structure, realizing the integrated function of power transmission and speed regulation.

[0015] 2. In this utility model, the performance advantages of the high-pressure water pump are further amplified by replacing gears and high-speed shafts with motors. At the same time, the stepless speed regulation of the speed-regulating motor can change the speed of the high-pressure water pump in real time, thereby flexibly adjusting the output pressure. It also avoids the energy waste of "using a large motor to pull a small cart" in the traditional structure, so that the equipment can maintain efficient operation under different working conditions. Attached Figure Description

[0016] Figure 1 This is an exploded view of the main body of this utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of the present utility model;

[0018] Figure 3This is a schematic diagram of the support device of this utility model;

[0019] Figure 4 This is a schematic diagram of the transmission device of this utility model;

[0020] Figure 5 For the present utility model Figure 4 A magnified view of a section at point I;

[0021] Figure 6 This is a side view of the transmission device of this utility model.

[0022] In the diagram: 1-Hydraulic oil radiator, 2-Support device, 3-Transmission device, 4-Support base, 5-Filter, 6-Water tank, 7-Diesel tank, 21-First protective door, 22-Second protective door, 23-Support frame, 31-Diesel engine radiator, 32-Pump rotating plate, 33-Centrifugal water pump, 34-Shock-absorbing base, 35-Shock-absorbing pad, 36-High-pressure water pump, 37-Diesel engine module, 38-Speed-regulating motor, 39-Motor output shaft, 310-Battery holder. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6 An embodiment of the present invention provides a diesel engine high-pressure pump, including a support device (2) for support and protection, wherein a support base (4) is provided at the bottom of the support device (2).

[0025] Transmission device (3), the transmission device (3) is fixedly installed on the upper end face of the support base (4) near the rear, the transmission device (3) is used for stepless speed regulation;

[0026] The filter (5) has two sets, and both sets of the filter (5) are located on the upper side of the support base (4). A diesel tank (7) is located on the upper front of the support base (4) opposite to the transmission device (3), and a hydraulic oil radiator (1) is located on the upper part of the diesel tank (7). A water tank (6) is located on the upper side of the support base (4) near the diesel tank (7).

[0027] Preferably, the support device (2) includes a support frame (23), with second protective doors (22) provided on both sides of the support frame (23), and two sets of first protective doors (21) provided at the rear of the support frame (23).

[0028] Preferably, the transmission device (3) includes a shock-absorbing base (34) for support. A diesel engine radiator (31) is provided near the rear of the upper end face of the shock-absorbing base (34). A diesel engine module (37) is provided in the middle of the upper end face of the shock-absorbing base (34). A speed-regulating motor (38) is provided at the output end of the inner end face of the transmission device (3). A motor output shaft (39) is provided at the output end of the speed-regulating motor (38). A high-pressure water pump (36) is fixedly provided at the front of the upper end face of the shock-absorbing base (34). A battery holder (310) is provided on one side of the upper end face of the shock-absorbing base (34). A pump rotating plate (32) is hinged on the other side of the upper end face of the shock-absorbing base (34). A centrifugal water pump (33) is provided on the upper end face of the pump rotating plate (32). Shock-absorbing pads (35) are provided at equal intervals at the bottom of the shock-absorbing base (34).

[0029] Preferably, the shock-absorbing base (34) is fixedly disposed on the upper end face of the support base (4), and the support base (4) is disposed at the bottom of the inner end face of the support frame (23), which can provide a stable support platform for the operation of the diesel engine radiator (31), the diesel engine module (37) and the high-pressure water pump (36), thereby improving the stability of equipment operation.

[0030] Preferably, the speed-regulating motor (38) drives the high-pressure water pump (36) through the motor output shaft (39). The speed-regulating motor (38) can flexibly adjust the pressure of the high-pressure water pump (36) through the motor output shaft (39), thereby improving the adaptability of the equipment.

[0031] Preferably, the material of the shock-absorbing pad (35) is rubber. Multiple sets of shock-absorbing pads (35) can provide sufficient buffering force for the diesel engine module (37) during operation, thereby reducing the noise of the diesel engine module (37) during operation and improving the stability of operation.

[0032] Working principle: During operation, the fuel in the diesel tank 7 is filtered by the filter 5 and then enters the combustion chamber of the diesel engine module 37. Subsequently, the reciprocating motion of the piston converts chemical energy into mechanical energy, driving the crankshaft to rotate at a rated speed of 2000 rpm (in the original structure, the crankshaft also needs to drive the gearbox, but in the improved structure, it only needs to output basic power). The diesel engine crankshaft is directly connected to the power input shaft of the speed regulating motor 38 through a rigid coupling, transmitting the constant speed of 2000 rpm to the rotor assembly inside the speed regulating motor 38 (replacing the multi-stage mechanical transmission of "crankshaft → gearbox → high-speed shaft" in the traditional structure). The battery holder 310 provides 12V DC power, which in turn drives the electromagnetic speed regulating module inside the speed regulating motor 7 (the controller sends PWM signals according to the operation requirements). By changing the excitation current of the stator winding, a speed difference is generated between the rotor and the output shaft (for example, when the high-pressure water pump 36 needs to be 1500 rpm, the output shaft 39 of the speed regulating motor 38 is reduced by 500 rpm relative to the input shaft), realizing stepless speed regulation from 0 to 3000 rpm.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A diesel engine high-pressure pump, comprising a support device (2) for support and protection, wherein a support base (4) is provided at the bottom of the support device (2), characterized in that: Transmission device (3), the transmission device (3) is fixedly installed on the upper end face of the support base (4) near the rear, the transmission device (3) is used for stepless speed regulation; The filter (5) has two sets, and both sets of the filter (5) are located on the upper side of the support base (4). A diesel tank (7) is located on the upper front of the support base (4) opposite to the transmission device (3), and a hydraulic oil radiator (1) is located on the upper part of the diesel tank (7). A water tank (6) is located on the upper side of the support base (4) near the diesel tank (7).

2. The diesel engine high-pressure pump according to claim 1, characterized in that: The support device (2) includes a support frame (23), with second protective doors (22) provided on both sides of the support frame (23), and two sets of first protective doors (21) provided at the rear of the support frame (23).

3. The diesel engine high-pressure pump according to claim 2, characterized in that: The transmission device (3) includes a shock-absorbing base (34) for support. A diesel engine radiator (31) is provided on the upper end face of the shock-absorbing base (34) near the rear. A diesel engine module (37) is provided in the middle of the upper end face of the shock-absorbing base (34). A speed-regulating motor (38) is provided at the output end of the inner end face of the transmission device (3). A motor output shaft (39) is provided at the output end of the speed-regulating motor (38). A high-pressure water pump (36) is fixedly provided at the front of the upper end face of the shock-absorbing base (34). A battery holder (310) is provided on one side of the upper end face of the shock-absorbing base (34). A pump rotating plate (32) is hinged on the other side of the upper end face of the shock-absorbing base (34). A centrifugal water pump (33) is provided on the upper end face of the pump rotating plate (32). Shock-absorbing pads (35) are provided at equal intervals at the bottom of the shock-absorbing base (34).

4. The diesel engine high-pressure pump according to claim 3, characterized in that: The shock-absorbing base (34) is fixedly disposed on the upper end face of the support base (4), and the support base (4) is disposed at the bottom of the inner end face of the support frame (23).

5. The diesel engine high-pressure pump according to claim 3, characterized in that: The speed-regulating motor (38) drives the high-pressure water pump (36) through the motor output shaft (39).

6. The diesel engine high-pressure pump according to claim 3, characterized in that: The shock-absorbing pad (35) is made of rubber.

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