A special medicine pump for helicopter agricultural and forestry spraying equipment

Abstract

The utility model relates to the technical field of pump bodies, and specifically to a special medicine pump for helicopter agricultural and forestry spraying equipment; the medicine pump comprises a medicine pump, an electrical module and a speed regulating knob, the electrical module is connected to the medicine pump, and the protected speed regulating knob is connected to the electrical module; the medicine pump comprises a motor, a valve body, a motor shaft, a valve body seat, a motor sealing ring, a static ring, a dynamic ring, a plug, a valve body sealing ring, an impeller, a square key, a fixing unit and a connecting pipe, the motor shaft is arranged on the motor, the motor sealing ring is connected to the motor shaft, the valve body seat is fixedly connected to the motor and covered on the motor shaft, the valve body is connected to the valve body seat, the dynamic ring is sleeved on the outside of the motor shaft, the static ring is arranged on the valve body seat and frictionally matched with the dynamic ring, the impeller is connected to the motor shaft, the valve body sealing ring is arranged in the valve body, and the plug is plugged into the valve body seat, so that the flow rate and pressure of the pump body can be controlled, the pump body is controllable and stable, the maintenance is simple, the use is safe and reliable, and the safety performance is high.

Description

Technical Field

[0001] The utility model relates to the technical field of pump bodies, in particular to a special medicine pump for helicopter agricultural and forestry spraying equipment. Background Art

[0002] At present, with the rapid development of general aviation technology, helicopter agricultural and forestry spraying systems are widely used in agricultural and forestry protection. In helicopter agricultural and forestry spraying operations, the performance of the medicine pump directly affects the spraying effect and operation efficiency. Traditional medicine pumps are mostly driven by diesel or gasoline, which have problems such as high energy consumption, high noise, and complex maintenance. Electric-driven medicine pumps have the advantages of energy saving, environmental protection, and easy maintenance, and have become an important development direction for helicopter agricultural and forestry spraying equipment in the future.

[0003] However, the flow and pressure of the existing pump body are uncontrollable, relatively unstable, unsafe and unreliable to use, and have low safety performance. Summary of the invention

[0004] The utility model aims to provide a special medicine pump for helicopter agricultural and forestry spraying equipment, aiming to solve the technical problems that the flow and pressure of the existing pump body are uncontrollable, relatively unstable, unsafe and reliable to use, and have low safety performance.

[0005] To achieve the above purpose, the utility model adopts a special medicine pump for helicopter agricultural and forestry spraying equipment, including a medicine pump, an electrical module and a speed regulating knob, wherein the electrical module is connected to the medicine pump, and the speed regulating knob is connected to the electrical module;

[0006] The medicine pump comprises a motor, a valve body, a motor shaft, a valve body seat, a motor sealing ring, a static ring, a dynamic ring, a plug, a valve body sealing ring, an impeller, a square key, a fixing unit and a connecting pipe. The motor shaft is arranged on the motor, the motor sealing ring is connected to the motor shaft, the valve body seat is fixedly connected to the motor and covers the motor shaft, the valve body is connected to the valve body seat and is located above the valve body seat, the dynamic ring is sleeved on the outside of the motor shaft, the static ring is arranged on the valve body seat and frictionally cooperates with the dynamic ring, the impeller is connected to the motor shaft and is located in the valve body, the fixing unit is fixedly connected to the motor shaft and is located on the impeller, the valve body sealing ring is arranged in the valve body, the plug is plugged into the valve body seat, the square key is located between the motor shaft and the impeller, the valve body seat has an observation square hole, the valve body has a water outlet and a cavitation hole, the connecting pipe is connected to the water outlet, and the electrical module is connected to the motor.

[0007] Wherein, the electrical module includes a circuit board, a motor positive cable and a motor negative cable. The circuit board has a VO1 terminal, a VO2 terminal, an IN+ interface, an IN- interface and a knob terminal. The two ends of the motor positive cable are respectively connected to the motor and the VO1 terminal, the two ends of the motor negative cable are respectively connected to the motor and the VO2 terminal, the speed adjustment knob is connected to the knob terminal, and the N+ interface and the IN- interface are used to connect to a power supply with a voltage of 28VDC.

[0008] Among them, the special medicine pump for helicopter agricultural and forestry spraying equipment also includes two mounting supports, both of which are fixedly connected to the motor and are located on the outer side wall of the motor, and each of the mounting supports has two through holes.

[0009] Wherein, the fixing unit includes a pressing plate and a pressing plate bolt, the pressing plate is connected to the impeller and is located above the impeller, and the pressing plate bolt is connected to the motor shaft and passes through the pressing plate.

[0010] Wherein, the speed regulating knob has a limited speed gear position and a zero speed gear position, and the limited speed gear position and the zero speed gear position are both located on the outer surface of the speed regulating knob.

[0011] The utility model discloses a special medicine pump for helicopter agricultural and forestry spraying equipment. When assembling the medicine pump, the motor is placed vertically and kept in a stable state by being installed from bottom to top. The motor sealing ring is placed in the motor shaft groove, aligned with the bolt hole, the valve body seat is rotated, the valve body seat is installed along the motor shaft, the friction surfaces of the dynamic ring and the static ring are fitted, and the valve body seat is installed along the motor shaft together. A wooden hammer is then used to knock the square key into the keyway, the impeller is pressed into the valve body seat along the motor shaft, the fixing unit is used to fix the impeller to the motor shaft, and the valve body sealing ring is installed into the sealing of the valve body seat. In the groove, the valve body sealing ring is made of high-density fluororubber. Align the bolt hole, install the valve body into the valve body seat along the motor shaft, tighten the bolts, and the electrical module and the speed control knob can control the flow and pressure of the medicine pump. The medicine pump forms a continuous liquid suction and discharge process by rotating the impeller, relying on centrifugal force and negative pressure. An observation square hole is provided on the opening of the valve body. If leakage occurs, the static ring baffle will prevent water from leaking into the motor, and the leakage can be observed from the observation square hole. Through the above method, the flow and pressure of the pump body can be controlled, the pump body is controllable and stable, maintenance is simple, and it is safe and reliable to use, with high safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 The utility model is a structural schematic diagram of a special medicine pump for helicopter agricultural and forestry spraying equipment.

[0014] Figure 2 It is a structural schematic diagram of the motor pump of the utility model.

[0015] Figure 3 It is a structural side view of the motor pump of the utility model.

[0016] Figure 4 It is a structural schematic diagram of the speed regulating knob of the utility model.

[0017] 101-speed knob, 102-motor, 103-valve body seat, 104-motor shaft, 105-motor sealing ring, 106-static ring, 107-dynamic ring, 108-plug, 109-valve body sealing ring, 110-impeller, 111-square key, 112-connecting pipe, 113-circuit board, 114-motor positive cable, 115-motor negative cable, 116-mounting support, 117-pressing plate, 118-pressing plate bolt, 119-limited speed gear, 120-zero speed gear, 121-water outlet, 122-cavitation hole, 123-observation square hole, 124-through hole, 125-knob end, 126-friction surface, 127-valve body. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0019] See also Figure 1~Figure 4 The utility model provides a special medicine pump for helicopter agricultural and forestry spraying equipment, including a medicine pump, an electrical module and a speed regulating knob 101, wherein the electrical module is connected to the medicine pump, and the speed regulating knob 101 is connected to the electrical module;

[0020] The drug pump includes a motor 102, a valve body 127, a motor shaft 104, a valve body seat 103, a motor seal ring 105, a static ring 106, a dynamic ring 107, a plug 108, a valve body seal ring 109, an impeller 110, a square key 111, a fixing unit and a connecting pipe 112. The motor shaft 104 is arranged on the motor 102, the motor seal ring 105 is connected to the motor shaft 104, the valve body seat 103 is fixedly connected to the motor 102 and covered on the motor shaft 104, the valve body 127 is connected to the valve body seat 103 and is located above the valve body seat 103, the dynamic ring 107 is sleeved on the outside of the motor shaft 104, and the static ring 106 is arranged on The impeller 110 is connected to the motor shaft 104 and is located in the valve body 127. The fixing unit is fixedly connected to the motor shaft 104 and is located on the impeller 110. The valve body sealing ring 109 is arranged in the valve body 127. The plug 108 is plugged into the valve body seat 103. The square key 111 is located between the motor shaft 104 and the impeller 110. The valve body seat 103 has an observation square hole 123. The valve body 127 has a water outlet 121 and a cavitation hole 122. The connecting pipe 112 is connected to the water outlet 121. The electrical module is connected to the motor 102.

[0021] In this embodiment, when assembling the drug pump, the motor 102 is placed vertically by installing from bottom to top, keeping it in a stable state, placing the motor sealing ring 105 into the groove of the motor shaft 104, aligning the bolt hole, rotating the valve body seat 103, and installing the valve body seat 103 along the motor shaft 104, fitting the friction surface 126 of the dynamic ring 107 and the static ring 106, and installing the valve body seat 103 along the motor shaft 104 together, and then using a wooden Hammer the square key 111 into the keyway, press the impeller 110 into the valve body seat 103 along the motor shaft 104, use the fixing unit to fix the impeller 110 to the motor shaft 104, install the valve body sealing ring 109 into the sealing groove of the valve body seat 103, the valve body sealing ring 109 is made of high-density fluororubber, align the bolt holes, install the valve body 127 into the valve body seat 103 along the motor shaft 104, tighten the bolts, and the electrical module The speed control knob 101 can control the flow rate and pressure of the medicine pump. The medicine pump forms a continuous liquid suction and discharge process by rotating the impeller 110, relying on centrifugal force and negative pressure. The valve body 127 is provided with an observation square hole 123. If a leakage occurs, the static ring 106 baffle will prevent water from leaking into the motor 102. The leakage can be observed from the observation square hole 123. In addition, due to the aviation weight requirements and size restrictions, the square holes of most pump bodies on the market are relatively large, which has the disadvantages of increased load and inability to reduce pressure, and does not meet aviation requirements. A small groove water baffle is provided in the observation square hole 123. When the pump body leaks, the water pressure leaks through the shaft seal to reach the water baffle to reduce the pressure. A sealing ring is then provided to further reduce the water flow pressure so that it can achieve the function of maximum protection of the motor in case of leakage. Through the above method, the flow rate and pressure of the pump body can be controlled, the pump body is controllable and stable, simple to maintain, safe and reliable to use, and has high safety performance.

[0022] Furthermore, the electrical module includes a circuit board 113, a motor positive cable 114 and a motor negative cable 115, the circuit board 113 has a VO1 terminal, a VO2 terminal, an IN+ interface, an IN- interface and a knob terminal 125, the two ends of the motor positive cable 114 are respectively connected to the motor 102 and the VO1 terminal, the two ends of the motor negative cable 115 are respectively connected to the motor 102 and the VO2 terminal, the speed control knob 101 is connected to the knob terminal 125, and the N+ interface and the IN- interface are used to connect to a power supply with a voltage of 28VDC.

[0023] In this embodiment, the motor positive cable 114 is connected to the VO1 terminal, the motor negative cable 115 is connected to the VO2 terminal, the positive pole of the power supply is connected to the IN+ terminal, the negative pole of the power supply is connected to the IN- terminal, the speed adjustment knob 101 is connected to the knob terminal 125, and the power supply voltage is 28VDC when the power supply is in use. The liquid medium must fill the pump body of the medicine pump and exclude air.

[0024] Furthermore, the special medicine pump for helicopter agricultural and forestry spraying equipment also includes two mounting brackets 116, and the two mounting brackets 116 are fixedly connected to the motor 102 and are located on the outer side wall of the motor 102. Each of the mounting brackets 116 has two through holes 124.

[0025] In this embodiment, bolts are provided, and the medicine pump is installed and fixed on the helicopter through the four through holes 124 on the mounting support 116; when the valve body seat 103 is installed, the axis of the observation square hole 123 is perpendicular to the mounting support 116; in addition, by aligning the bolt holes, the water outlet 121 is on the same side as the mounting support 116, and the valve body 127 is installed into the valve body seat 103 along the motor shaft 104, and the bolts are tightened. It is suitable for one agricultural spraying equipment. When the water outlet 121 is on the opposite side of the mounting support 116, it is suitable for the other two agricultural spraying equipment.

[0026] Furthermore, the fixing unit includes a pressing plate 117 and a pressing plate bolt 118 . The pressing plate 117 is connected to the impeller 110 and is located above the impeller 110 . The pressing plate bolt 118 is connected to the motor shaft 104 and passes through the pressing plate 117 .

[0027] In this embodiment, the impeller 110 is pressed into the valve body seat 103 along the motor shaft 104 , and the pressing sheet 117 is pressed against the impeller 110 by the pressing sheet bolt 118 and tightened, so that the impeller 110 is fixed to the motor shaft 104 .

[0028] Furthermore, the speed regulating knob 101 has a limited speed gear position 119 and a zero speed gear position 120 , and both the limited speed gear position 119 and the zero speed gear position 120 are located on the outer surface of the speed regulating knob 101 .

[0029] In this embodiment, before starting for the first time after a new installation or maintenance, the speed knob 101 is adjusted to the zero speed gear position, and after power is supplied, the speed knob 101 is slowly rotated to the limited speed gear position, such as Figure 4 As shown, during this process, observe the spraying effect, spraying pressure and sound of the pesticide pump of the agricultural spray system. If there is any abnormality, disconnect the power supply immediately and use it again after troubleshooting; otherwise, continue spraying until the nozzle no longer sprays liquid, and finally disconnect the power supply.

[0030] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A special medicine pump for helicopter agricultural and forestry spraying equipment, characterized in that: It includes a medicine pump, an electrical module and a speed regulating knob, wherein the electrical module is connected to the medicine pump, and the speed regulating knob is connected to the electrical module; The medicine pump comprises a motor, a valve body, a motor shaft, a valve body seat, a motor sealing ring, a static ring, a dynamic ring, a plug, a valve body sealing ring, an impeller, a square key, a fixing unit and a connecting pipe. The motor shaft is arranged on the motor, the motor sealing ring is connected to the motor shaft, the valve body seat is fixedly connected to the motor and covers the motor shaft, the valve body is connected to the valve body seat and is located above the valve body seat, the dynamic ring is sleeved on the outside of the motor shaft, the static ring is arranged on the valve body seat and frictionally cooperates with the dynamic ring, the impeller is connected to the motor shaft and is located in the valve body, the fixing unit is fixedly connected to the motor shaft and is located on the impeller, the valve body sealing ring is arranged in the valve body, the plug is plugged into the valve body seat, the square key is located between the motor shaft and the impeller, the valve body seat has an observation square hole, the valve body has a water outlet and a cavitation hole, the connecting pipe is connected to the water outlet, and the electrical module is connected to the motor.

2. The special medicine pump for helicopter agricultural and forestry spraying equipment according to claim 1 is characterized in that: The electrical module includes a circuit board, a motor positive cable and a motor negative cable. The circuit board has a VO1 terminal, a VO2 terminal, an IN+ interface, an IN- interface and a knob terminal. The two ends of the motor positive cable are respectively connected to the motor and the VO1 terminal, the two ends of the motor negative cable are respectively connected to the motor and the VO2 terminal, the speed adjustment knob is connected to the knob terminal, and the N+ interface and the IN- interface are used to connect to a power supply with a voltage of 28VDC.

3. The special medicine pump for helicopter agricultural and forestry spraying equipment according to claim 1, characterized in that: The special medicine pump for helicopter agricultural and forestry spraying equipment also includes two mounting supports, both of which are fixedly connected to the motor and are located on the outer side wall of the motor, and each of the mounting supports has two through holes.

4. The special medicine pump for helicopter agricultural and forestry spraying equipment as claimed in claim 1, characterized in that: The fixing unit includes a pressing plate and a pressing plate bolt. The pressing plate is connected to the impeller and is located above the impeller. The pressing plate bolt is connected to the motor shaft and passes through the pressing plate.

5. The special medicine pump for helicopter agricultural and forestry spraying equipment as claimed in claim 1, characterized in that: The speed regulating knob has a limited speed gear position and a zero speed gear position, and both the limited speed gear position and the zero speed gear position are located on the outer surface of the speed regulating knob.

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