Flow-adjustable plunger reciprocating high-pressure pump

Abstract

The application discloses a flow-adjustable plunger reciprocating high-pressure pump, which comprises a base, a transmission support fixedly installed on the upper surface of the base, a transmission assembly arranged in the transmission support, a driver arranged on the top of the transmission support, a double-cavity pump body fixedly installed on the other side of the upper surface of the base and matched with the transmission assembly, and the transmission assembly is in reciprocating sliding connection with the double-cavity pump body under the driving of the driver. According to the above scheme, the transmission assembly is combined with the double-cavity pump body into an integrated reciprocating double-cavity pump liquid high-pressure pump group under the driving of the driver, pump liquid cabins are arranged at both ends of a piston cylinder, and a combined liquid outlet pipe and a combined liquid inlet pipe are arranged to provide liquid inlet and outlet paths for the two pump liquid cabins, so that the reciprocating movement of the piston can pump liquid, and the working efficiency of the high-pressure pump and the upper limit of liquid pumping flow are doubled under the condition that the reciprocating stroke of the plunger and the cylinder diameter of the pump head part are unchanged.

Description

Technical Field

[0001] This invention relates to the field of plunger reciprocating high-pressure pump technology, and more specifically, to a plunger reciprocating high-pressure pump with adjustable flow rate. Background Technology

[0002] Currently, the most common plunger-type reciprocating high-pressure pumps on the market consist of an electric motor, coupling, reducer, transmission part, pump head part, and common base. Its working principle is that the electric motor, together with the reducer, belt drive or continuously variable speed controller, drives the crankshaft to rotate. The crankshaft pushes the connecting rod through the slider to make the plunger make linear reciprocating motion inside the cylinder of the pump head part. Under the alternating opening and closing of the inlet valve and outlet valve of the pump head, the purpose of suction and discharge is achieved. The flow rate of the existing plunger-type reciprocating high-pressure pump is limited by the reciprocating stroke of the plunger and the diameter of the cylinder of the pump head part. It is impossible to adjust the flow rate of the high-pressure pump according to specific use requirements, which has a large limitation on its use. Summary of the Invention

[0003] To overcome the aforementioned deficiencies of the prior art, embodiments of the present invention provide a flow-adjustable plunger-type reciprocating high-pressure pump, which solves the problem that the flow rate of existing plunger-type reciprocating high-pressure pumps is limited by the reciprocating stroke of the plunger and the cylinder diameter of the pump head, making it impossible to adjust the high-pressure pump flow rate according to specific usage requirements, resulting in significant usage limitations.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a flow-adjustable plunger-type reciprocating high-pressure pump, including a base, a transmission support fixedly installed on the upper surface of the base, a transmission component disposed inside the transmission support, a driver disposed on the top of the transmission support, the driver being used to drive the transmission component, a dual-chamber pump body adapted to the transmission component being fixedly installed on the other side of the upper surface of the base, the transmission component being reciprocally slidably connected to the dual-chamber pump body under the drive of the driver, a combined drain pipe being detachably sealed on the top of the dual-chamber pump body, and a combined inlet pipe being disposed on one side of the dual-chamber pump body.

[0005] Preferably, the transmission assembly includes a double-disc eccentric wheel, with a central spindle fixedly installed at the center of both the upper and lower discs of the double-disc eccentric wheel. The bottom end of one of the central spindles is rotatably connected to the upper surface of the base through a bearing support, and the other central spindle passes through the upper cover plate of the transmission support and is fixedly connected to the transmission shaft of the driver.

[0006] Preferably, an eccentric shaft is provided between the two discs of the double-disc eccentric wheel, and a linkage rod is rotatably sleeved on the outside of the eccentric shaft. The end of the linkage rod away from the double-disc eccentric wheel is detachably connected to a light shaft push rod through a double-ended threaded pin. The end of the light shaft push rod away from the linkage rod passes through the side wall of the transmission support and is provided with a piston located inside the double-chamber pump body.

[0007] Preferably, the transmission support includes a dustproof housing, the upper cover of the dustproof housing has a through hole adapted to the central spindle, a self-lubricating bushing is provided inside the through hole, the self-lubricating bushing is rotatably sleeved at the connection between the central spindle and the through hole, and a long tube limiting bushing is provided at the connection between the dustproof housing and the optical axis push rod.

[0008] Preferably, the driver includes a gearbox and a drive motor. The drive shaft of the drive motor is fixedly connected to the drive shaft of the gearbox. The linkage shaft of the gearbox is fixedly connected to the central main shaft connected to the upper surface of the double-disc eccentric wheel. The bottom of the gearbox is fixedly equipped with support legs that are fixedly connected to the top surface of the dustproof housing.

[0009] Preferably, the dual-chamber pump body includes a damping plate, and a reciprocating pump casing is fixedly installed on the upper surface of the damping plate. The reciprocating pump casing has two sets of symmetrically arranged pump liquid chambers inside, and a piston cylinder passage adapted to the piston is opened between the two sets of pump liquid chambers. The two sets of pump liquid chambers are connected through the piston cylinder passage.

[0010] Preferably, the top of the damping plate is provided with an outlet that is independently connected to the two pump liquid chambers, and the side of the damping plate connected to the combined inlet pipe is provided with an inlet that is independently connected to the two pump liquid chambers. A sealing bushing is installed through the connection between the damping plate and the piston, and the sealing bushing is tightly fitted to the piston.

[0011] Preferably, the combined drain pipe includes a sealing plate, on the upper surface of which a liquid guide pipe and a three-way conduit are installed in a through manner. A one-way ball valve is provided at the connection between the liquid guide pipe and the three-way conduit. The liquid guide pipe is connected to a branch pipe of the three-way conduit in a one-way inflow manner through the one-way ball valve. The bottom ends of the liquid guide pipe and the three-way conduit are respectively connected to two liquid outlets. The lower surface of the sealing plate is movably connected with elastic plugs adapted to the two liquid outlets through compression springs.

[0012] Preferably, the combined inlet pipe includes a three-way manifold, and one-way liquid valves are provided at the connection points between the two outlets and the two inlets of the three-way manifold. Two pressure regulating valves are embedded on the side of the three-way manifold away from the two inlets, and the two pressure regulating valves correspond to the two one-way liquid valves respectively. The inlet of the three-way manifold is fixedly connected to the inlet pipe.

[0013] The technical effects and advantages of this invention are as follows:

[0014] In the above scheme, the transmission component is integrated with the dual-chamber pump body under the drive of the driver to form a reciprocating dual-chamber high-pressure pump group. During the operation of the device, the piston of the transmission component will reciprocate in the piston cylinder inside the dual-chamber pump body. By setting pump chambers at both ends of the piston cylinder, and providing inlet and outlet paths for the two pump chambers through a combined drain pipe and a combined inlet pipe, the reciprocating motion of the piston can pump liquid. With the reciprocating stroke of the plunger and the cylinder diameter of the pump head unchanged, the working efficiency and upper limit of the liquid pumping flow of the high-pressure pump are doubled, improving the practicality of the device.

[0015] In the above scheme, the three-way manifold is connected to the two pump chambers in one direction through two one-way liquid valves, and two pressure regulating valves are fixedly connected to the outside of the three-way manifold. The two pressure regulating valves are on the same axis as the two one-way liquid valves. When the user needs to adjust the flow rate of the high-pressure pump, he only needs to manually open the pressure regulating valve to allow external air to enter the interior of the three-way manifold to offset part of the pumping pressure of the liquid, thereby realizing the adjustment of the high-pressure pump flow rate and improving the applicability of the device.

[0016] In the above scheme, the linkage rod is connected to the driver through a double-disc eccentric wheel and two central spindles. The optical shaft push rod is detachably connected to the end of the linkage rod through a double-ended threaded pin. Through the two central spindles, the double-disc eccentric wheel can obtain two points of rotation, which ensures the stability of the rotation of the double-disc eccentric wheel on its fixed axis. This allows the linkage rod and the optical shaft push rod to obtain stable power output, thereby ensuring the stability of the flow rate of the high-pressure pump body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the driver structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the transmission component structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the transmission support structure of the present invention;

[0021] Figure 5 This is a schematic diagram of the dual-chamber pump body structure of the present invention;

[0022] Figure 6 This is a schematic diagram of the reciprocating pump casing structure of the present invention;

[0023] Figure 7This is a schematic diagram of the combined drain pipe structure of the present invention;

[0024] Figure 8 This is a schematic diagram of the combined liquid inlet pipe structure of the present invention.

[0025] The attached diagram is labeled as follows: 1. Base; 2. Transmission support; 3. Transmission assembly; 4. Driver; 5. Dual-chamber pump body; 6. Combined drain pipe; 7. Combined inlet pipe; 21. Dustproof housing; 22. Long pipe limiting bushing; 23. Self-lubricating bushing; 31. Double-disc eccentric wheel; 32. Central spindle; 33. Linkage rod; 34. Optical shaft push rod; 35. Piston; 41. Gearbox; 42. Drive motor; 43. Support leg; 51. Shock absorber; 52. Reciprocating pump housing; 53. Inlet; 54. Outlet; 55. Sealing bushing; 56. Pump chamber; 57. Piston cylinder; 61. Sealing plate; 62. Guide pipe; 63. Three-way guide pipe; 64. One-way ball valve; 65. Elastic plug; 71. Three-way manifold; 72. Pressure regulating valve; 73. One-way liquid valve; 74. Inlet pipe. Detailed Implementation

[0026] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0027] As attached Figure 1 To be continued Figure 8 An embodiment of the present invention provides a flow-adjustable plunger-type reciprocating high-pressure pump, including a base 1, a transmission support 2 fixedly installed on the upper surface of the base 1, a transmission assembly 3 disposed inside the transmission support 2, a driver 4 disposed on the top of the transmission support 2, the driver 4 being used to drive the transmission assembly 3, a dual-chamber pump body 5 adapted to the transmission assembly 3 being fixedly installed on the other side of the upper surface of the base 1, the transmission assembly 3 being reciprocatedly slidably connected to the dual-chamber pump body 5 under the drive of the driver 4, a combined drain pipe 6 being detachably sealed on the top of the dual-chamber pump body 5, and a combined inlet pipe 7 being disposed on one side of the dual-chamber pump body 5.

[0028] The transmission assembly 3 includes a double-disc eccentric wheel 31. A central spindle 32 is fixedly installed at the center of the upper and lower discs of the double-disc eccentric wheel 31. The bottom end of one central spindle 32 is rotatably connected to the upper surface of the base 1 through a bearing support. The other central spindle 32 passes through the upper cover plate of the transmission support 2 and is fixedly connected to the transmission shaft of the driver 4. By setting the central spindle 32, both the upper and lower discs of the double-disc eccentric wheel 31 have a stable axial force point, ensuring the smooth rotation of the double-disc eccentric wheel 31.

[0029] Among them, an eccentric shaft is provided between the two discs of the double-disc eccentric wheel 31. A linkage rod 33 is rotatably connected to the outside of the eccentric shaft. The end of the linkage rod 33 away from the double-disc eccentric wheel 31 is detachably connected to a light shaft push rod 34 through a double-ended threaded pin. The end of the light shaft push rod 34 away from the linkage rod 33 passes through the side wall of the transmission support 2 and is provided with a piston 35 located inside the double-chamber pump body 5.

[0030] The transmission support 2 includes a dustproof housing 21. The upper cover of the dustproof housing 21 has a through hole adapted to the central spindle 32. A self-lubricating bushing 23 is provided inside the through hole. The self-lubricating bushing 23 is rotatably sleeved at the connection between the central spindle 32 and the through hole. A long tube limiting bushing 22 is provided at the connection between the dustproof housing 21 and the optical axis push rod 34. By providing the self-lubricating bushing 23, the wear rate of the connection between the central spindle 32 and the through hole is reduced, so as to ensure the service life of the central spindle 32. The long tube limiting bushing 22 at the connection between the dustproof housing 21 and the optical axis push rod 34 can ensure the stability of the transverse movement of the optical axis push rod 34.

[0031] The driver 4 includes a gearbox 41 and a drive motor 42. The drive shaft of the drive motor 42 is fixedly connected to the drive shaft of the gearbox 41. The linkage shaft of the gearbox 41 is fixedly connected to the central main shaft 32 connected to the upper surface of the double-disc eccentric wheel 31. The bottom of the gearbox 41 is fixedly equipped with a support leg 43 that is fixedly connected to the top surface of the dustproof housing 21.

[0032] The dual-chamber pump body 5 includes a damping plate 51. A reciprocating pump housing 52 is fixedly installed on the upper surface of the damping plate 51. The reciprocating pump housing 52 has two sets of symmetrically arranged pump liquid chambers 56 inside. A piston cylinder passage 57 adapted to the piston 35 is opened between the two sets of pump liquid chambers 56. The two sets of pump liquid chambers 56 are connected through the piston cylinder passage 57.

[0033] The damping plate 51 has an outlet 54 on its top that is independently connected to the two pump liquid chambers 56. The damping plate 51 has an inlet 53 on its side that is connected to the combined inlet pipe 7 that is independently connected to the two pump liquid chambers 56. A sealing bushing 55 is installed through the connection between the damping plate 51 and the piston 35. The sealing bushing 55 is tightly fitted to the piston 35.

[0034] The combined drain pipe 6 includes a sealing plate 61. A liquid guide pipe 62 and a three-way conduit 63 are installed through the upper surface of the sealing plate 61. A one-way ball valve 64 is provided at the connection between the liquid guide pipe 62 and the three-way conduit 63. The liquid guide pipe 62 is connected to the branch pipe of the three-way conduit 63 in a one-way inflow manner through the one-way ball valve 64. The bottom ends of the liquid guide pipe 62 and the three-way conduit 63 are respectively connected to two outlets 54. The lower surface of the sealing plate 61 is movably connected with elastic plugs 65 that are adapted to the two outlets 54 through compression springs.

[0035] The combined inlet pipe 7 includes a three-way manifold 71. One-way valves 73 are provided at the connection points between the two outlets of the three-way manifold 71 and the two inlets 53. Two pressure regulating valves 72 are embedded on the side of the three-way manifold 71 away from the two inlets 53. The two pressure regulating valves 72 correspond to the two one-way valves 73 respectively. The inlet of the three-way manifold 71 is fixedly connected to an inlet pipe 74.

[0036] The working process of this invention is as follows:

[0037] Driven by the driver 4, the transmission assembly 3 is integrated with the dual-chamber pump body 5 to form a reciprocating dual-chamber high-pressure pump set. During the operation of the device, the piston 35 of the transmission assembly 3 will reciprocate in the piston cylinder 57 inside the dual-chamber pump body 5. By setting pump chambers 56 at both ends of the piston cylinder 57, and providing inlet and outlet paths for the two pump chambers 56 through the combined drain pipe 6 and the combined inlet pipe 7, the reciprocating motion of the piston 35 can pump liquid. With the reciprocating stroke of the plunger and the cylinder diameter of the pump head unchanged, the working efficiency and the upper limit of the liquid pumping flow rate of the high-pressure pump are doubled.

[0038] The three-way manifold 71 is connected to the two pump chambers 56 in one direction through two one-way liquid valves 73. Two pressure regulating valves 72 are fixedly connected to the outside of the three-way manifold 71. The two pressure regulating valves 72 are on the same axis as the two one-way liquid valves 73. When the user needs to adjust the flow rate of the high-pressure pump, he only needs to manually open the pressure regulating valves 72 to allow outside air to enter the interior of the three-way manifold 71 to offset part of the pumping pressure of the liquid, thereby realizing the adjustment of the high-pressure pump flow rate.

[0039] The linkage 33 is connected to the driver 4 via a double-disc eccentric wheel 31 and two central spindles 32. The optical axis push rod 34 is detachably connected to the end of the linkage 33 via a double-ended threaded pin. Through the two central spindles 32, the double-disc eccentric wheel 31 can obtain two axial rotation points, ensuring the stability of the double-disc eccentric wheel 31's fixed-axis rotation, so that the linkage 33 and the optical axis push rod 34 can obtain stable power output.

[0040] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0041] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0042] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flow adjustable plunger type reciprocating high pressure pump comprising a base, characterized in that, The upper surface of the base is fixedly provided with a transmission support, the inside of the transmission support is provided with a transmission assembly, the top of the transmission support is provided with a driver for driving the transmission assembly, the other side of the upper surface of the base is fixedly provided with a double-cavity pump body matched with the transmission assembly, the transmission assembly is in reciprocating sliding connection with the double-cavity pump body under the driving of the driver, the top of the double-cavity pump body is detachably capped with a combined liquid discharge pipe, and one side of the double-cavity pump body is provided with a combined liquid inlet pipe. The combined liquid inlet pipe comprises a three-way junction box, one-way liquid valves are arranged at the communication positions of the two water outlets and the two liquid inlets of the three-way junction box, two pressure regulating valves are inlaidly arranged on the side of the three-way junction box away from the two liquid inlets, the two pressure regulating valves correspond to the two one-way liquid valves respectively, and the two pressure regulating valves are on the same axis as the two one-way liquid valves respectively.

2. The flow adjustable plunger reciprocating high pressure pump according to claim 1, characterized in that, The transmission assembly comprises a double-disc eccentric wheel, center shafts are fixedly arranged at the centers of the upper and lower disc surfaces of the double-disc eccentric wheel, the bottom end of one center shaft is rotatably connected to the upper surface of the base through a bearing support, and the other center shaft is fixedly connected with the transmission shaft of the driver through the upper cover plate of the transmission support.

3. The flow adjustable plunger reciprocating high pressure pump according to claim 2, characterized in that, An eccentric shaft is arranged between the two disc surfaces of the double-disc eccentric wheel, a linkage rod is rotatably sleeved on the outside of the eccentric shaft, an optical shaft pushing rod is detachably connected to the end of the linkage rod away from the double-disc eccentric wheel through a double-end threaded pin, and a piston is arranged in the double-cavity pump body through the side wall of the transmission support at the end of the optical shaft pushing rod away from the linkage rod.

4. The flow adjustable plunger reciprocating high pressure pump according to claim 3, characterized in that, The transmission support comprises a dustproof shell, a through hole matched with the center shaft is formed in the upper cover plate of the dustproof shell, a self-lubricating bushing is arranged in the through hole, the self-lubricating bushing is rotatably sleeved at the connection position of the center shaft and the through hole, and a long pipe limiting bushing is arranged at the connection position of the dustproof shell and the optical shaft pushing rod.

5. The flow adjustable plunger reciprocating high pressure pump according to claim 1, wherein, The driver comprises a speed reducer and a driving motor, the transmission shaft of the driving motor is fixedly connected with the driving shaft of the speed reducer, the linkage shaft of the speed reducer is fixedly connected with the center shaft connected with the upper disc surface of the double-disc eccentric wheel, and the bottom of the speed reducer is fixedly provided with a supporting leg fixedly connected with the top surface of the dustproof shell.

6. The flow adjustable plunger reciprocating high pressure pump of claim 1, wherein, The double-cavity pump body comprises a shock-absorbing plate, the upper surface of the shock-absorbing plate is fixedly provided with a reciprocating pump shell, two groups of symmetrical pump liquid cabin bodies are arranged in the reciprocating pump shell, a piston cylinder is arranged between the two groups of pump liquid cabin bodies and matched with the piston, and the two groups of pump liquid cabin bodies are communicated through the piston cylinder.

7. The flow adjustable plunger reciprocating high pressure pump according to claim 6, characterized in that, The top part of the shock-absorbing plate is respectively provided with liquid outlets independently communicated with the two pump liquid cabin bodies, the side of the shock-absorbing plate connected with the combined liquid inlet pipe is respectively provided with liquid inlets independently communicated with the two pump liquid cabin bodies, the connecting part of the shock-absorbing plate and the piston is throughly embedded with a sealing shaft sleeve, and the sealing shaft sleeve is closely combined with the piston.

8. The flow adjustable plunger reciprocating high pressure pump of claim 1, wherein, The combined liquid outlet pipe comprises a sealing plate, the upper surface of the sealing plate is throughly installed with a liquid guide pipe and a three-way pipe, the connecting part of the liquid guide pipe and the three-way pipe is provided with a one-way ball valve, the liquid guide pipe and the branch pipe of the three-way pipe are in one-way communication in a flow-in mode through the one-way ball valve, the bottom ends of the liquid guide pipe and the three-way pipe are respectively communicated with two liquid outlets, and the lower surface of the sealing plate is movably connected with elastic plugs matched with the two liquid outlets through compression springs.

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