Oil delivery pump capable of adjusting pressure

Abstract

The invention relates to the technical field of oil delivery pumps, in particular to a pressure-adjustable oil delivery pump which comprises a piston pump, a base is arranged at the bottom of the piston pump, the piston pump is fixedly mounted on the base through a support, a connecting rod of the piston pump is rotationally connected with a first rotating shaft, and a supporting cylinder is fixedly mounted at the top of the base through a support. The flywheel is rotationally connected to the side, close to the first rotating shaft, of the supporting cylinder, a movable through groove is formed in the flywheel, a sliding rod is fixedly installed in the movable through groove, a pressure adjusting sliding block is arranged in the movable through groove and slidably connected with the sliding rod, and the end, away from the connecting rod, of the first rotating shaft is fixedly connected to the pressure adjusting sliding block. A pressure regulating unit is arranged on the side, away from the first rotating shaft, of the flywheel. The pressure regulating unit is designed, the handle is rotated to enable the pressure regulating rod to drive the pressure moving rod to push or stretch, the pressure rotating sliding block moves in the inclined through groove to enable the moving rod to drive the pressure regulating sliding block to move so as to change the reciprocating motion amplitude of the piston, and the pressure regulating function of the oil delivery pump is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of oil delivery pumps, and in particular to an oil delivery pump capable of adjusting pressure. Background Art

[0002] An oil pump is a type of power delivery equipment used to extract or pressurize oil. Oil pumps can be divided into three categories: vane pumps, reciprocating pumps, and other types of pumps. Reciprocating pumps include piston pumps, plunger pumps, diaphragm pumps, etc.

[0003] The most commonly used oil pump in life is a piston pump. Because the piston pump has a simple structure, wide applicability, and low cost, it is usually used in small and simple operations. However, this oil pump with a relatively simple structure usually does not have a good pressure regulating function. In the prior art, the piston oil pump often adds a simple regulating valve at the outlet of the pump to limit the flow at the outlet through the regulating valve, which will increase the pressure in the pump and make it inconvenient to regulate the pressure in the pump. In the low-cost oil delivery process, when the piston pump is used for a long time, the temperature of the pump will increase due to friction, or the viscosity of the oil will increase the pressure in the pump chamber, which may cause the motor to overload and eventually burn out the motor, and the sealing device in the pump body will be damaged, causing oil leakage. At this time, the only solution is to suspend the drive of the motor to reduce the temperature of the equipment or relieve the internal pump pressure or replace parts, which greatly reduces the operating efficiency and is time-consuming and labor-intensive. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the background technology and to propose a pressure-adjustable oil pump.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A pressure-adjustable oil pump comprises a piston pump, a base is provided at the bottom of the piston pump, the piston pump is fixedly installed on the base through a bracket, a piston rod of the piston pump passes through the pump housing and is hinged with a connecting rod, the connecting rod is rotatably connected to a No. 1 rotating shaft, one end of the No. 1 rotating shaft is provided with a driving unit, a supporting cylinder is provided on the top of the base, the supporting cylinder is fixedly installed on the base through the bracket, the driving unit consists of a flywheel, a transmission chain and a driving gear, the flywheel is rotatably connected to a side of the supporting cylinder close to the No. 1 rotating shaft, a movable through groove is provided in the flywheel, a sliding rod is fixedly installed in the movable through groove, a pressure regulating sliding block is provided in the movable through groove, the pressure regulating sliding block is slidably connected to the sliding rod, one end of the No. 1 rotating shaft away from the connecting rod is fixedly connected to the pressure regulating sliding block, a plurality of transmission teeth evenly distributed along its circumference are fixedly installed on the outer wall of the flywheel, the driving gear is fixedly installed on the output shaft of the output motor, the transmission chain is sleeved on the outer side of the flywheel and the driving gear, and a pressure regulating unit is provided on the side of the flywheel away from the No. 1 rotating shaft.

[0006] In the above-mentioned pressure-adjustable oil pump, the pressure regulating unit is composed of a No. 2 rotating shaft, a pressure regulating wheel, and an arc-shaped pressure fixing block. The No. 2 rotating shaft is fixedly installed on the flywheel, and the No. 2 rotating shaft passes through the pressure regulating wheel and is rotatably connected to the pressure regulating wheel. An arc-shaped pressure regulating slide groove is provided in the pressure regulating wheel, and the two sides of the pressure regulating slide groove respectively pass through the surfaces of the two sides of the pressure regulating wheel. A moving rod is slidably connected in the pressure regulating slide groove, and the moving rod passes through the pressure regulating slide groove. One end of the pressure regulating rod close to the flywheel is fixedly installed on the pressure regulating slider. Two pressure fixing blocks are provided and are symmetrical to each other. An inclined through groove with an arc structure is provided on the outer ring wall of the pressure fixing block, and a pressure-rotating slider is slidably connected in the inclined through groove. A pressing rod is provided between the two pressure-rotating sliders, and the two ends of the pressing rod are respectively hinged to the corresponding pressure-rotating sliders.

[0007] In the above-mentioned pressure-adjustable oil pump, a vertical slide groove is opened at the end of the second shaft away from the flywheel, and a stop rod is fixedly installed at the end of the pressure rod close to the pressure regulating wheel. The stop rod is inserted into the vertical slide groove and is slidably connected to the vertical slide groove.

[0008] In the above-mentioned pressure-adjustable oil pump, a circular structure fixing plate is fixedly installed on the side of the support cylinder away from the flywheel, a through hole is opened in the fixing plate, a threaded sleeve is fixedly installed on the side of the fixing plate close to the fixing rod, the threaded sleeve corresponds to the through hole, a fixing rod is fixedly installed on the end of the pressure rod away from the pressure regulating wheel, a rotating groove is opened in the fixing rod, a pressure regulating rod is arranged in the support cylinder, the pressure regulating rod passes through the through hole and the threaded sleeve and is threadedly connected with the threaded sleeve, one end of the pressure regulating rod close to the fixed rod is rotatably connected to the rotating groove, and a handle is fixedly installed on the end of the pressure regulating rod away from the rotating groove.

[0009] In the above-mentioned pressure-adjustable oil pump, a horizontal slide groove is provided on the top of the base, a horizontal slider is slidably connected in the horizontal slide groove, the end of the horizontal slider away from the horizontal slide groove extends out of the horizontal slide groove and is fixedly connected to an L-shaped clamping fixing seat, a clamping slide groove is provided in the clamping fixing seat, a clamping block is slidably connected in the clamping slide groove, the end of the clamping block away from the clamping slide groove extends out of the clamping slide groove, a clamping screw hole is provided on the side of the clamping fixing seat away from the handle, and a clamping screw is threadedly connected in the clamping screw hole.

[0010] In the above-mentioned pressure-adjustable oil pump, a ball groove is provided on the inner ring wall of the rotating groove, a rotating ball is slidably connected in the ball groove, and the rotating ball contacts the outer wall of the pressure regulating rod.

[0011] In the above-mentioned pressure-adjustable oil pump, a dial with an arc structure is fixedly mounted on the outer wall of the clamping fixing seat, and an indicating block with a triangular structure is fixedly connected to the outer ring wall of the handle.

[0012] In the above-mentioned pressure-adjustable oil pump, a fixing ring with an annular structure is fixedly installed on the inner wall of the vertical slide, a limiting tension spring is fixedly installed on the side of the fixing ring close to the stop rod, the end of the limiting tension spring away from the fixing ring is fixedly connected to the stop rod, a limiting spring telescopic rod is inserted in the limiting tension spring, the sleeve of the limiting spring telescopic rod is fixedly installed on the inner wall of the vertical slide, and the telescopic end of the limiting spring telescopic rod is in conflict with the stop rod.

[0013] Compared with the existing technology, the advantages of this pressure-adjustable oil pump are: 1. The present invention designs a pressure regulating wheel and a pressure fixing block. Through the pushing or stretching movement of the pressure rod, the pressure regulating wheel and the flywheel are relatively rotated and the moving rod is moved in the pressure regulating slide groove. The moving rod drives the pressure regulating slider to slide in the moving through groove. The rotation radius of the pressure regulating slider can be adjusted to adjust the amplitude of the reciprocating motion of the piston rod in the cylinder sleeve, thereby solving the problem that the pressure of the oil pump is not easy to flexibly adjust. 2. The present invention designs a pressure regulating rod and a stop rod. By inserting the stop rod into the vertical slide groove, the pressure rod can avoid invalid idling during the rotation adjustment process, thereby affecting the adjustment accuracy. The pressure regulating rod is rotatably connected with the rotation groove opened in the fixed rod, and the threaded sleeve is used to convert the pushing and stretching action of the pressure rod into the rotation action of the handle, making the pressure adjustment process more convenient and able to dynamically adjust the pressure during the operation of the oil pump, solving the problem of relieving the pressure in the oil pump by suspending the operation and improving the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 The present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle; Figure 3 It is a schematic diagram of the planar structure of the present invention; Figure 4 The present invention Figure 3 Schematic diagram of the cross-sectional structure along the AA direction; Figure 5 The present invention Figure 4 A schematic diagram of the local enlarged structure at B in the middle; Figure 6 The present invention Figure 4 A schematic diagram of the local enlarged structure at C in the middle; Figure 7 The present invention Figure 4 A schematic diagram of the local enlarged structure at D in the middle; Figure 8 The present invention Figure 4 A schematic diagram of the local enlarged structure at E in the middle; Fig. 9 is a schematic diagram of the three-dimensional structure of the driving unit of the present invention; Fig.10 is a schematic cross-sectional structural diagram of a voltage regulating unit of the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the voltage regulating unit of the present invention.

[0015] In the figure: 1. piston pump; 2. base; 201. horizontal slide; 202. horizontal slider; 203. clamping seat; 204. clamping slide; 205. clamping block; 206. clamping screw hole; 207. clamping screw; 4. drive unit; 5. No. 1 rotating shaft; 6. flywheel; 601. movable through groove; 602. pressure regulating slider; 603. slide bar; 604. support cylinder; 7. transmission chain; 701. transmission tooth; 8. driving gear; 10. pressure regulating unit; 11. No. 2 rotating shaft; 12. pressure regulating wheel; 120 1. Pressure regulating slide groove; 13. Pressure fixing block; 1301. Inclined through groove; 1302. Pressure-rotating slider; 14. Moving rod; 15. Pressing rod; 16. Vertical slide groove; 1601. Fixed ring; 17. Anti-rotation rod; 18. Fixed plate; 1801. Through hole; 19. Fixed rod; 1901. Rotating groove; 1902. Ball groove; 1903. Rotating ball; 20. Pressure regulating rod; 21. Threaded sleeve; 22. Handle; 24. Dial; 25. Indicator block; 26. Limit tension spring; 27. Limit spring telescopic rod. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] Reference Figure 1-Figure 11A pressure-adjustable oil delivery pump comprises a piston pump 1, a base 2 is provided at the bottom of the piston pump 1, the piston pump 1 is fixedly mounted on the base 2 through a bracket, a piston rod of the piston pump 1 passes through a pump housing and is hinged with a connecting rod, the connecting rod is rotatably connected to a No. 1 rotating shaft 5, a driving unit 4 is provided at one end of the No. 1 rotating shaft 5, a support cylinder 604 is provided at the top of the base 2, the support cylinder 604 is fixedly mounted on the base 2 through a bracket, the driving unit 4 is composed of a flywheel 6, a transmission chain 7 and a driving gear 8, the flywheel 6 is rotatably connected to a side of the support cylinder 604 close to the No. 1 rotating shaft 5, a movable through groove 601 is provided in the flywheel 6, a sliding rod 603 is fixedly mounted in the movable through groove 601, a pressure regulating slider 602 is provided in the movable through groove 601, the pressure regulating slider 602 is slidably connected to the sliding rod 603, the No. 1 rotating shaft 5 is fixedly connected to the pressure regulating slider 602 at one end away from the connecting rod. A plurality of transmission teeth 701 evenly distributed along the circumference of the flywheel 6 are fixedly installed on the outer wall of the flywheel 6. The driving gear 8 is fixedly installed on the output shaft of the output motor. The transmission chain 7 is sleeved on the outer sides of the flywheel 6 and the driving gear 8. A pressure regulating unit 10 is arranged on the side of the flywheel 6 away from the first rotating shaft 5. The support cylinder 604 is used to support the flywheel 6. The output motor drives the driving gear 8 and the transmission chain 7 to rotate. The flywheel 6 can be driven to rotate in conjunction with the transmission teeth 701. The rotation of the flywheel 6 can make the piston of the piston pump 1 reciprocate under the drive of the pressure regulating slider 602. The pressure regulating unit 10 is used to change and lock the position of the pressure regulating slider 602 in the movable through groove 601. A storage box is arranged next to the output motor to supply power to the output motor.

[0019] The pressure regulating unit 10 is composed of a No. 2 rotating shaft 11, a pressure regulating wheel 12, and an arc-shaped pressure fixing block 13. The No. 2 rotating shaft 11 is fixedly installed on the flywheel 6. The No. 2 rotating shaft 11 passes through the pressure regulating wheel 12 and is rotatably connected to the pressure regulating wheel 12. An arc-shaped pressure regulating slide 1201 is provided in the pressure regulating wheel 12. Both sides of the pressure regulating slide 1201 pass through the surfaces of both sides of the pressure regulating wheel 12 respectively. A moving rod 14 is slidably connected in the pressure regulating slide 1201. The moving rod 14 passes through the pressure regulating slide 1201. One end of the pressure regulating rod 20 close to the flywheel 6 is fixedly installed on the pressure regulating slider 602. Two pressure fixing blocks 13 are provided and are symmetrical to each other. An arc-shaped inclined through groove 1301 is provided on the outer ring wall of the pressure fixing block 13. A pressure-rotating slider 1302 is slidably connected in the inclined through groove 1301. The two pressure-rotating sliders 1 A pressure rod 15 is arranged in the middle of 302, and the two ends of the pressure rod 15 are respectively hinged with the corresponding pressure-rotating slider 1302. When the pressure rod 15 is pushed or stretched toward the pressure regulating wheel 12, the pressure-rotating slider 1302 slides in the inclined slot 1301 under the action of the inclined slot 1301. Since the opening directions of the two inclined slots 1301 are alternately arranged, the pressure regulating wheel 12 is driven by the pressure fixing block 13 to rotate relative to the flywheel 6 on the second rotating shaft 11 during the movement of the pressure rod 15. At this time, the moving rod 14 will slide in the pressure regulating slot 1201 and drive the pressure regulating slider 602 to move in the moving slot 601. At this time, the rotation radius of the pressure regulating slider 602 on the flywheel 6 will change, which can change the amplitude of the reciprocating motion of the piston in the piston pump 1 in the cylinder sleeve.

[0020] A vertical slide groove 16 is provided at the end of the second rotating shaft 11 away from the flywheel 6, and a stop rod 17 is fixedly installed at the end of the pressure rod 15 close to the pressure regulating wheel 12. The stop rod 17 is inserted into the vertical slide groove 16 and is slidably connected to the vertical slide groove 16. The cross-section of the vertical slide groove 16 is a square structure, and the cross-section of the stop rod 17 is a square structure. When the stop rod 17 is inserted into the vertical slide groove 16, the stop rod 17 will not rotate relative to the second rotating shaft 11, so that the pressure rod 15 can be prevented from self-rotating during movement and affecting the rotation angle of the pressure regulating wheel 12.

[0021] A circular structure fixing plate 18 is fixedly installed on the side of the support cylinder 604 away from the flywheel 6, and a through hole 1801 is opened in the fixing plate 18. A threaded sleeve 21 is fixedly installed on the side of the fixing plate 18 close to the fixing rod 19, and the threaded sleeve 21 corresponds to the through hole 1801. A fixing rod 19 is fixedly installed on the end of the pressure rod 15 away from the pressure regulating wheel 12, and a rotation groove 1901 is opened in the fixing rod 19. A pressure regulating rod 20 is arranged in the support cylinder 604, and the pressure regulating rod 20 passes through the through hole 1801 and the threaded sleeve 21 and is threadedly connected with the threaded sleeve 21. The end of the pressure rod 20 close to the fixed rod 19 is rotatably connected to the rotating groove 1901, and the end of the pressure regulating rod 20 away from the rotating groove 1901 is fixedly installed with a handle 22. The fixing plate 18 is used to fix the threaded sleeve 21. When the handle 22 is rotated, the pressure regulating rod 20 and the threaded sleeve 21 will rotate relative to each other, which will push or stretch the pressure rod 15 when the pressure regulating rod 20 and the rotating groove 1901 are in a rotational relationship. The pressure regulating rod 20 cooperates with the threaded sleeve 21 to change the push-pull movement of the pressure rod 15 into the rotational movement of the handle 22, making the adjustment process easier.

[0022] A horizontal slide groove 201 is provided on the top of the base 2, and a horizontal slider 202 is slidably connected in the horizontal slide groove 201. One end of the horizontal slider 202 away from the horizontal slide groove 201 extends out of the horizontal slide groove 201 and is fixedly connected to an L-shaped clamping fixing seat 203. A clamping slide groove 204 is provided in the clamping fixing seat 203, and a clamping block 205 is slidably connected in the clamping slide groove 204. One end of the clamping block 205 away from the clamping slide groove 204 extends out of the clamping slide groove 204. A clamping screw hole is provided on the side of the clamping fixing seat 203 away from the handle 22. 206, a clamping screw 207 is connected to the inner thread of the clamping screw hole 206, the clamping seat 203 and the clamping block 205 are used to clamp the handle 22, and the clamping screw hole 206 cooperates with the clamping screw 207 to lock the handle 22, which plays the role of locking the pressure regulating rod 20 in disguise, so that the pressure rod 15 fixedly connected to the fixing rod 19 is locked when the pressure regulating rod 20 is locked, so that the pressure regulating wheel 12 cannot rotate spontaneously, and when the clamping block 205 is loosened and the handle 22 is rotated, the clamping seat 203 can be synchronously adjusted in the horizontal slide groove 201.

[0023] A ball groove 1902 is provided on the inner ring wall of the rotating groove 1901, and a rotating ball 1903 is slidably connected in the ball groove 1902. The rotating ball 1903 conflicts with the outer wall of the pressure regulating rod 20. When the handle 22 is rotated to make the pressure regulating rod 20 drive the pressing rod 15 to move, the rotational friction between the pressure regulating rod 20 and the rotating groove 1901 will increase. The rotating ball groove 1902 cooperates with the ball 1903 to reduce the rotational friction between the pressure regulating rod 20 and the rotating groove 1901.

[0024] An arc-shaped dial 24 is fixedly installed on the outer wall of the clamping fixed seat 203, and an indicator block 25 with a triangular structure is fixedly connected to the outer ring wall of the handle 22. When the handle 22 is rotated, the indicator block 25 will rotate synchronously with the handle 22, and cooperate with the dial 24 to visualize the pressure regulation, making the pressure regulation process more accurate.

[0025] A fixing ring 1601 with an annular structure is fixedly installed on the inner wall of the vertical slide 16, and a limit tension spring 26 is fixedly installed on the side of the fixing ring 1601 close to the anti-rotation rod 17. The end of the limit tension spring 26 away from the fixing ring 1601 is fixedly connected to the anti-rotation rod 17, and a limit spring telescopic rod 27 is inserted into the limit tension spring 26. The sleeve of the limit spring telescopic rod 27 is fixedly installed on the inner wall of the vertical slide 16, and the telescopic end of the limit spring telescopic rod 27 conflicts with the anti-rotation rod 17. The fixing ring 1601 is used to fix the position of the limit tension spring 26. When the handle 22 is turned clockwise, the pressing rod 15 will be pushed toward the direction of the pressure regulating wheel 12. At this time, the anti-rotation rod 17 will push the limit spring telescopic rod 27 to compress it. When the angle of rotation of the handle 22 is greater, the pressure of the limit spring telescopic rod 27 on the pressure regulating rod 20 will be greater. Similarly, when the handle 22 is rotated counterclockwise, the limit tension spring 26 will generate a pulling force on the pressure regulating rod 20. The limit tension spring 26 cooperates with the limit spring telescopic rod 27 to prevent the handle 22 from rotating too fast, causing the pressure regulating slider 602 and the moving rod 14 to hit the inner walls of the moving through groove 601 and the pressure regulating slide groove 1201 respectively, resulting in unstable operation of the piston and the flywheel 6.

[0026] The specific working principle and use method of the present invention are explained in detail below: when in use, the handle 22 is locked by the default support fixing seat, and the pressure regulating rod 20 is also locked. At this time, the pressing rod 15 cannot generate torque force on the two pressure fixing blocks 13, and the pressure regulating wheel 12 will not rotate relative to the flywheel 6. At this time, the pressure regulating slider 602 is in a locked state. When the output motor is running, the flywheel 6 is driven to rotate by the driving gear 8 to cooperate with the transmission chain 7 and the transmission gear 701, and the No. 1 rotating shaft 5 drives the connecting rod to move. At this time, the piston rod performs reciprocating linear motion in the cylinder sleeve of the piston pump 1; When the pump pressure displayed by the pressure valve on the top of the piston pump 1 is too high, the clamping screw 207 can be rotated so that the clamping block 205 no longer conflicts with the handle 22, and the handle 22 can be released. At this time, the handle 22 can be rotated clockwise, and the relative rotation between the threaded sleeve 21 and the pressure regulating rod 20 causes the pressure regulating rod 20 to push the pressing rod 15 in the direction of the pressure regulating wheel 12. During the movement of the pressing rod 15, the two pressing and rotating sliders 1302 are driven to slide in the corresponding inclined through grooves 1301. Since the opening directions of the two inclined through grooves 1301 are staggered, the pressing rod 15 will generate a torque force on the pressure fixing block 13, so that the pressure fixing block 13 drives the pressure regulating wheel 12 to rotate in the counterclockwise direction. At this time, the pressure regulating wheel 12 will rotate relative to the flywheel 6 in a clockwise direction, and the moving rod 14 will move along the pressure regulating slot 1201 toward the center of the pressure regulating wheel 12. The movement of the moving rod 14 drives the pressure regulating slider 602 to move along the moving slot 601 toward the center of the flywheel 6. At this time, the rotation radius of the pressure regulating slider 602 is reduced. After the adjustment is completed, tighten the clamping screw 207 to lock the handle 22. At this time, the amplitude of the reciprocating motion of the piston rod is reduced, which can reduce the pressure in the pump chamber. When the operation needs to increase the pressure in the pump chamber, the clamping screw 207 can be loosened and the handle 22 can be turned counterclockwise. At this time, the pressure regulating rod 20 will pull the pressing rod 15 away from the pressure regulating wheel 12, and the pressure-rotating slider 1302 will move in the inclined through groove 1301 in the direction away from the pressure regulating wheel 12, which will cause a counterclockwise relative movement between the pressure regulating wheel 12 and the flywheel 6. At this time, the moving rod 14 will move in the pressure regulating groove 1201 toward the outer ring wall of the pressure regulating wheel 12. At this time, the pressure regulating slider 602 will be driven by the moving rod 14 to move in the direction away from the center of the flywheel 6, that is, the rotation radius of the pressure regulating slider 602 increases. At this time, the amplitude of the reciprocating motion of the piston increases, which can increase the pressure in the pump chamber. In summary, the pressure regulating function of the oil pump is realized.

[0027] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pressure-adjustable oil delivery pump, comprising a piston pump (1), a base (2) being arranged at the bottom of the piston pump (1), the piston pump (1) being fixedly mounted on the base (2) via a bracket, a piston rod of the piston pump (1) passing through a pump housing and being hingedly connected to a connecting rod, the connecting rod being rotatably connected to a first rotating shaft (5), one end of the first rotating shaft (5) being provided with a driving unit (4), characterized in that: A support tube (604) is provided on the top of the base (2), and the support tube (604) is fixedly mounted on the base (2) via a bracket. The drive unit (4) is composed of a flywheel (6), a transmission chain (7), and a driving gear (8). The flywheel (6) is rotatably connected to a side of the support tube (604) close to the first rotating shaft (5). A movable through groove (601) is provided in the flywheel (6), a slide rod (603) is fixedly mounted in the movable through groove (601), and a pressure regulating slide block is provided in the movable through groove (601). (602), the pressure regulating slider (602) is slidably connected to the slide rod (603), one end of the first rotating shaft (5) away from the connecting rod is fixedly connected to the pressure regulating slider (602), a plurality of transmission teeth (701) evenly distributed along the circumference of the flywheel (6) are fixedly installed on the outer wall of the flywheel (6), the driving gear (8) is fixedly installed on the output shaft of the output motor, the transmission chain (7) is sleeved on the outer side of the flywheel (6) and the driving gear (8), and a pressure regulating unit (10) is arranged on the side of the flywheel (6) away from the first rotating shaft (5); The pressure regulating unit (10) is composed of a second rotating shaft (11), a pressure regulating wheel (12), and an arc-shaped pressure fixing block (13). The second rotating shaft (11) is fixedly mounted on the flywheel (6). The second rotating shaft (11) passes through the pressure regulating wheel (12) and is rotatably connected to the pressure regulating wheel (12). An arc-shaped pressure regulating chute (1201) is provided in the pressure regulating wheel (12). Both sides of the pressure regulating chute (1201) respectively pass through the surfaces of both sides of the pressure regulating wheel (12). A moving rod (14) is slidably connected in the pressure regulating chute (1201). The moving rod (14) is rotatably connected to the flywheel (6). 4) penetrating the pressure regulating slide groove (1201), one end of the pressure regulating rod (20) close to the flywheel (6) is fixedly mounted on the pressure regulating slider (602), two pressure fixing blocks (13) are provided and are symmetrical to each other, an arc-shaped inclined through groove (1301) is provided on the outer ring wall of the pressure fixing block (13), a pressure-rotating slider (1302) is slidably connected in the inclined through groove (1301), a pressing rod (15) is provided between the two pressure-rotating sliders (1302), and both ends of the pressing rod (15) are respectively hinged to the corresponding pressure-rotating sliders (1302); A vertical slide groove (16) is formed at one end of the second rotating shaft (11) away from the flywheel (6), and a stop rod (17) is fixedly installed at one end of the pressure rod (15) close to the pressure regulating wheel (12), and the stop rod (17) is inserted into the vertical slide groove (16) and is slidably connected to the vertical slide groove (16); A circular structure fixing plate (18) is fixedly installed on the side of the support tube (604) away from the flywheel (6), a through hole (1801) is provided in the fixing plate (18), a threaded sleeve (21) is fixedly installed on the side of the fixing plate (18) close to the fixing rod (19), the threaded sleeve (21) corresponds to the through hole (1801), a fixing rod (19) is fixedly installed on the end of the pressure rod (15) away from the pressure regulating wheel (12), a rotation groove (1901) is provided in the fixing rod (19), a pressure regulating rod (20) is arranged in the support tube (604), the pressure regulating rod (20) passes through the through hole (1801) and the threaded sleeve (21) and is threadedly connected to the threaded sleeve (21), an end of the pressure regulating rod (20) close to the fixing rod (19) is rotatably connected to the rotation groove (1901), and an end of the pressure regulating rod (20) away from the rotation groove (1901) is fixedly installed with a handle (22); A fixing ring (1601) with an annular structure is fixedly installed on the inner wall of the vertical slide groove (16); a limit tension spring (26) is fixedly installed on one side of the fixing ring (1601) close to the anti-rotation rod (17); one end of the limit tension spring (26) away from the fixing ring (1601) is fixedly connected to the anti-rotation rod (17); a limit spring telescopic rod (27) is inserted into the limit tension spring (26); a sleeve of the limit spring telescopic rod (27) is fixedly installed on the inner wall of the vertical slide groove (16); and the telescopic end of the limit spring telescopic rod (27) is in conflict with the anti-rotation rod (17).

2. The pressure-adjustable oil pump according to claim 1, characterized in that: A horizontal slide groove (201) is provided on the top of the base (2), a horizontal slider (202) is slidably connected in the horizontal slide groove (201), one end of the horizontal slider (202) away from the horizontal slide groove (201) extends out of the horizontal slide groove (201) and is fixedly connected to an L-shaped clamping seat (203), a clamping slide groove (204) is provided in the clamping seat (203), a clamping block (205) is slidably connected in the clamping slide groove (204), one end of the clamping block (205) away from the clamping slide groove (204) extends out of the clamping slide groove (204), a clamping screw hole (206) is provided on a side of the clamping seat (203) away from the handle (22), and a clamping screw (207) is threadedly connected to the clamping screw hole (206).

3. The pressure-adjustable oil pump according to claim 1, characterized in that: A ball groove (1902) is provided on the inner ring wall of the rotating groove (1901), a rotating ball (1903) is slidably connected in the ball groove (1902), and the rotating ball (1903) is in contact with the outer wall of the pressure regulating rod (20).

4. The pressure-adjustable oil pump according to claim 2, characterized in that: A scale plate (24) with an arc structure is fixedly mounted on the outer wall of the clamping fixing seat (203), and an indicating block (25) with a triangular structure is fixedly connected to the outer ring wall of the handle (22).

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