Plunger type reciprocating high-pressure oil pump sealing device

Abstract

The utility model provides a plunger type reciprocating high-pressure oil pump sealing device which comprises a pump body, an oil inlet and an oil outlet of the pump body are respectively provided with an oil inlet pipe and an oil outlet pipe in a butt joint mode, the oil outlet pipe, the oil inlet pipe and the pump body are installed and connected through butt joint components, and a second leading-out assembly is assembled in the oil inlet pipe. A first leading-out assembly is assembled in the oil outlet pipe, a communicated butt joint is in butt joint with the top of the oil outlet pipe and the top of the oil inlet pipe, a fastening assembly is fixedly installed on the pump body between the oil outlet pipe and the oil inlet pipe, and the fastening assembly is used for pressing and fastening the butt joint. According to the utility model, stable oil inlet and oil outlet of the pipeline are realized through the cooperative operation between the second leading-out assembly and the first leading-out assembly, and the two groups of sealing assemblies are arranged in the leading-out assembly, and are matched with the suction and extrusion force of the pump body to drive the sealing assemblies, so that the sealing assemblies are promoted to perform follow-up operation, and the sealing effect is improved. And self-resetting sealing can be performed during non-operation, so that the sealing effect of the oil port is ensured.

Description

Technical Field

[0001] This utility model relates to the field of oil pump technology, specifically to a piston-type reciprocating high-pressure oil pump sealing device. Background Technology

[0002] A piston pump is a commonly used hydraulic pump that uses the reciprocating motion of a piston within a pump cylinder to draw in and discharge liquid. Due to its simple structure, reliable operation, and convenient flow rate adjustment, this type of pump is widely used in various mechanical and industrial applications.

[0003] The inlet and outlet ports of plunger pumps are usually equipped with sealing fittings to ensure that the liquid can flow efficiently and without leakage in the system. The design of these fittings is crucial to the overall performance of the pump and the reliability of the system.

[0004] However, most current seals are made by setting O-rings on the mating parts or by using a corrugated mating structure to achieve sealing between the seals. However, this sealing method generally adopts a single-pass sealing operation, which is prone to rapid aging and wear of the sealing components due to time or environmental factors. It requires frequent disassembly and maintenance by personnel, and the sealing strength cannot be guaranteed. Furthermore, after the external mating parts are connected to the oil port of the pump body, the mating point is easily affected by external factors, which can lead to loosening and affect the stability during the connection. In addition, the aging of the seals can also cause leakage at the interface, reducing the sealing effect of the seals.

[0005] Therefore, this application proposes a plunger-type reciprocating high-pressure oil pump sealing device. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a plunger-type reciprocating high-pressure oil pump sealing device, which solves the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A plunger-type reciprocating high-pressure oil pump sealing device includes a pump body. An inlet pipe and an outlet pipe are respectively connected to the inlet and outlet ports of the pump body. The inlet and outlet pipes are connected to the pump body via a connecting component. A second outlet component is installed inside the inlet pipe, and a first outlet component is installed inside the outlet pipe. A connecting joint is connected to the top of the inlet and outlet pipes. A fastening component is fixedly installed on the pump body between the inlet and outlet pipes, and this fastening component is used to press and tighten the connecting joint. The fastening component includes a fixing plate, a pressure plate, and fastening bolts. A fixing plate is fixedly installed on the pump body between the inlet and outlet pipes. A pressure plate is connected between the connecting joints, and the pressure plate engages with the connecting joint via a bayonet. Fastening bolts are installed between the pressure plate and the fixing plate. The first outlet component includes a first annular block, an external sealing component, and a first internal sealing component. The first spring, sealing post, and guide post; a first annular block is fixedly installed inside the oil outlet pipe, and a first through hole is provided inside the first annular block; a guide post is fixedly installed on the end face inside the oil outlet pipe, and a first spring is fitted on the guide post; an external sealing component is connected to the end of the guide post; a first internal sealing component is connected to one side of the external sealing component, and the first internal sealing component extends into the first annular block; the second outlet assembly includes a second internal sealing component, a pushing component, a second annular block, and a second internal sealing component; a second annular block is fixedly installed inside the oil inlet pipe, and a second through hole is provided inside the second annular block; a second internal sealing component is connected to the second annular block through the second through hole; a pushing component is fixedly installed inside the oil inlet pipe, and the pushing component passes through the second internal sealing component, and its end is connected to the second internal sealing component; a second guide hole is provided on the second internal sealing component.

[0009] Furthermore, the docking component includes a rubber gasket and a mounting base. The inner ends of both the oil outlet pipe and the oil inlet pipe are docked with the mounting base. The oil outlet pipe and the oil inlet pipe are connected to the oil inlet and outlet ports of the pump body through the mounting base, and a rubber gasket is provided between the mounting base and the pump body.

[0010] Furthermore, the external sealing component includes a reciprocating plug, a first guide hole, a first rubber ring, and a connecting seat. The end of the first internal sealing component is fitted with a reciprocating plug, the reciprocating plug is embedded with a first rubber ring, and the reciprocating plug is provided with a first guide hole corresponding to the sealing column.

[0011] Furthermore, the top of the oil outlet pipe and the oil inlet pipe are provided with a second oil guide port and an oil inlet port, and the ports of the second oil guide port and the oil inlet port are fixedly installed with communicating oil nozzles, and the top of the oil nozzles is connected to the connector.

[0012] Furthermore, the first built-in sealing component and the second built-in sealing component have the same structure. The first built-in sealing component includes a first built-in plug and a second rubber ring. The first built-in plug is installed in both the first through hole and the second through hole, and the second rubber ring is embedded in the first built-in plug. The first built-in plug in the first through hole is installed and connected to the connecting seat, and the first built-in plug in the second through hole is installed and connected to the first built-in sealing component.

[0013] Furthermore, the pushing component includes a guide rod, a second spring, and a fixing frame. The fixing frame is fixedly installed inside the oil inlet pipe, and the guide rod is mated and installed on the fixing frame. The guide rod passes through the second built-in sealing component and is fixedly connected. The end of the guide rod is fixedly connected to the second built-in sealing component. The second spring is fitted on the guide rod between the second built-in sealing component and the fixing frame.

[0014] This utility model provides a piston-type reciprocating high-pressure oil pump sealing device. Compared with the prior art, it has the following advantages:

[0015] Through the coordinated operation between the second and first outlet components, stable oil inlet and outlet of the pipeline is achieved. The outlet component is equipped with two sets of sealing components, which are driven by the suction and extrusion force of the pump body, causing the sealing components to follow the operation. When not in operation, the sealing can be automatically reset to ensure the sealing effect of the oil port.

[0016] The fastening components achieve pressing and fixing at the joint between the pump body and the connector. This not only further ensures the tightness of the connector during operation and prevents loosening, but also prevents external factors from affecting the docking state and ensures the stability of the structure. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the internal assembly structure of the sealing device of this utility model is shown;

[0019] Figure 2 A schematic diagram of the external assembly structure of the sealing device of this utility model is shown;

[0020] Figure 3 A schematic diagram of the assembly structure of the oil outlet pipe and the first discharge component of this utility model is shown.

[0021] Figure 4 This diagram shows the assembly structure of the first annular block and the external sealing component of this utility model;

[0022] Figure 5 A schematic diagram of the assembly structure of the second derived component of this utility model is shown;

[0023] The diagram shows: 1. Pump body; 2. Oil outlet pipe; 21. Second oil guide port; 3. Oil inlet pipe; 31. Oil inlet port; 4. Connecting component; 41. Rubber gasket; 42. Mounting base; 5. Fastening assembly; 51. Fixing plate; 52. Pressure plate; 521. Bayonet; 53. Fastening bolt; 6. First outlet assembly; 61. First annular block; 611. First through hole; 62. External sealing component; 621. Reciprocating piston; 622. First guide hole; 623. First rubber ring; 62 4. Connecting seat; 63. First built-in sealing component; 631. First built-in plugging component; 632. Second rubber ring; 64. First spring; 65. Blocking post; 66. Guide post; 7. Second discharge assembly; 71. Second built-in plugging component; 711. Second guide hole; 72. Pushing component; 721. Guide rod; 722. Second spring; 723. Fixing bracket; 73. Second annular block; 731. Second through hole; 74. Second built-in sealing component; 8. Oil outlet; 9. Connecting joint. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Example 1

[0026] To address the technical problems in the background section, the following piston-type reciprocating high-pressure oil pump sealing device is provided:

[0027] Combination Figures 1-5 As shown, the plunger-type reciprocating high-pressure oil pump sealing device provided by this utility model includes a pump body 1. The inlet and outlet ports of the pump body 1 are respectively connected to an inlet pipe 3 and an outlet pipe 2. The outlet pipe 2, the inlet pipe 3 and the pump body 1 are connected by a docking component 4. The inlet pipe 3 is equipped with a second outlet component 7, and the outlet pipe 2 is equipped with a first outlet component 6. The tops of the outlet pipe 2 and the inlet pipe 3 are connected to a connecting joint 9. A fastening component 5 is fixedly installed on the pump body 1 between the outlet pipe 2 and the inlet pipe 3. The fastening component 5 is used to press and fasten the connecting joint 9.

[0028] During this process, the device is assembled with the pump body 1. The required oil inlet and outlet operations are achieved through the oil outlet pipe 2 and the oil inlet pipe 3. The oil outlet pipe 2, the oil inlet pipe 3 and the pump body 1 are installed and connected through the docking component 4, realizing the input and output of the pump body 1. Through the cooperation between the second outlet component 7 and the first outlet component 6, the stable oil inlet and outlet of the pipeline is achieved. The outlet component is equipped with two sets of sealing components. The suction and extrusion force of the pump body 1 drives the sealing components, causing the sealing components to follow the operation. When not in operation, it can automatically reset the seal to ensure the sealing effect of the oil port. The fastening component 5 realizes the pressing and fixing of the docking point between the pump body 1 and the connector 9. This not only further ensures the fastening effect of the connector 9 during operation and prevents loosening, but also prevents external factors from affecting the docking state and ensures the stability of the structure.

[0029] The fastening assembly 5 includes a fixing plate 51, a clamping plate 52, and fastening bolts 53. The fixing plate 51 is fixedly installed on the pump body 1 between the oil outlet pipe 2 and the oil inlet pipe 3. The clamping plate 52 is connected to the joints 9, and the clamping plate 52 is snapped into the joints 9 through a bayonet 521. The clamping plate 52 and the fixing plate 51 are connected and fastened with fastening bolts 53. The first discharge assembly 6 includes a first annular block 61, an external sealing component 62, a first internal sealing component 63, a first spring 64, a sealing post 65, and a guide post 66. The first annular block 61 is fixedly installed inside the oil outlet pipe 2, and the first annular block 61 has a first through hole 611 inside. The guide post 66 is fixedly installed on the end face inside the oil outlet pipe 2. The first spring 64 is fitted on the guide post 66, and the end of the guide post 66 is connected to the fixed plate 53. The system is equipped with an external sealing component 62, and a first internal sealing component 63 is installed on one side of the external sealing component 62. The first internal sealing component 63 extends into the first annular block 61. The second outlet component 7 includes a second internal plug 71, a pusher component 72, a second annular block 73, and a second internal sealing component 74. The second annular block 73 is fixedly installed inside the oil inlet pipe 3, and a second through hole 731 is provided inside the second annular block 73. The second internal sealing component 74 is installed on the second annular block 73 through the second through hole 731. The pusher component 72 is fixedly installed inside the oil inlet pipe 3, and the pusher component 72 passes through the second internal sealing component 74 and its end is installed and connected to the second internal plug 71. The second internal plug 71 is provided with a second guide hole 711.

[0030] During this process, after the pipeline connection is completed, the clamping plate 52 is used to lock the connector 9 in place by the clamping slot 521 on the clamping plate 52. Then, the clamping plate 52 and the fixing plate 51 are fixedly connected by the fastening bolts 53, which further strengthens the tightness of the connector 9 after the connection is installed. During this process, when the oil enters, the suction will act on the pushing component 72. Under the action of the pushing component 72, the second built-in sealing component 71 and the second built-in sealing component 74 will release the blockage of the oil flow and allow the oil to enter.

[0031] When the oil is being discharged, the pushing force will first push the first built-in sealing component 63, causing the first built-in sealing component 63 to simultaneously push the external sealing component 62, thus sealing the oil. When the external force is lost, the external sealing component 62 will be pushed back to its original position by the first spring 64, entering the sealing state and ensuring the sealing effect.

[0032] Example 2

[0033] like Figure 1 and Figure 5 As shown, based on the above embodiments, this embodiment further provides the following:

[0034] In this embodiment, the docking component 4 includes a rubber gasket 41 and a mounting base 42. The inner ends of the oil outlet pipe 2 and the oil inlet pipe 3 are both docked and installed with the mounting base 42. The oil outlet pipe 2 and the oil inlet pipe 3 are connected to the oil inlet and outlet ports of the pump body 1 through the mounting base 42, and a rubber gasket 41 is provided between the mounting base 42 and the pump body 1.

[0035] During this process, the mounting base 42 is equipped with multiple mounting bolts, which work together to achieve a fixed connection between the mounting base 42 and the pump body 1. After the fixed installation, the rubber gasket 41 can effectively ensure the tightness and sealing effect after installation.

[0036] In this embodiment, the external sealing component 62 includes a reciprocating plug 621, a first guide hole 622, a first rubber ring 623, and a connecting seat 624. The end of the first internal sealing component 63 is fitted with a reciprocating plug 621, and the first rubber ring 623 is embedded in the reciprocating plug 621. The reciprocating plug 621 is provided with a first guide hole 622 corresponding to the sealing post 65.

[0037] External sealing component 62 is used for oil discharge operations;

[0038] During this process, when the oil in the pump body 1 enters the oil outlet pipe 2, the pressure of the oil will push the first built-in sealing component 63. After the first built-in sealing component 63 is subjected to pressure, it will feed back to the reciprocating piston 621. The reciprocating piston 621 moves linearly along the internal guide post 66, which simultaneously drives the first built-in sealing component 63 to move out of the first annular block 61. At the same time, the sealing post 65 releases the blockage of the first guide hole 62. At that time, the oil will enter the other side of the reciprocating piston 621 through the first guide hole 62 and then be discharged.

[0039] The second oil guide port 21 and the oil inlet port 31 are fixedly installed with an oil outlet 8 that is connected to each other, and the top of the oil outlet 8 is connected to the connector 9.

[0040] During this process, the connector 9 is used to connect and install with the oil outlet 8, allowing personnel to perform assembly and connection.

[0041] Example 3

[0042] like Figures 1-5 As shown, based on the above embodiments, this embodiment further provides the following:

[0043] In this embodiment, the first built-in sealing component 63 and the second built-in sealing component 74 have the same structure. The first built-in sealing component 63 includes a first built-in plug 631 and a second rubber ring 632. The first built-in plug 631 is installed in both the first through hole 611 and the second through hole 731, and the second rubber ring 632 is embedded in the first built-in plug 631. The first built-in plug 631 in the first through hole 611 is installed and connected to the connecting seat 624, and the first built-in plug 631 in the second through hole 731 is installed and connected to the first built-in sealing component 63.

[0044] By combining the above, when the oil enters or exits, it will push pressure on the first built-in sealing component 63 and the second built-in sealing component 74 in the oil outlet pipe 2 and the oil inlet pipe 3.

[0045] This pressure will first apply pressure to the first built-in sealing member 631, causing the first built-in sealing member 631 to discharge within its respective first through hole 611 and second through hole 731. At this time, the first built-in sealing member 631 itself and its second rubber ring 632 will release the blockage of the first through hole 611 and the second through hole 731, ensuring the flow of oil.

[0046] In this embodiment, the pushing component 72 includes a guide rod 721, a second spring 722, and a fixing frame 723. The fixing frame 723 is fixedly installed inside the oil inlet pipe 3. The guide rod 721 is connected to the fixing frame 723 and passes through the second built-in sealing component 74 and is fixedly connected. The end of the guide rod 721 is fixedly connected to the second built-in sealing component 71. The second spring 722 is fitted on the guide rod 721 between the second built-in sealing component 74 and the fixing frame 723.

[0047] During this period, when the pump body 1 is in operation, it will create a negative pressure in the oil inlet pipe 3. Due to the negative pressure effect of the oil inlet pipe 3, the second built-in sealing component 74 will move inside under the force of the negative pressure and compress the second spring 722 during the inside movement. The guide rod 721 will simultaneously drive the second built-in sealing component 74 and the second built-in sealing component 71 to move inside, releasing the blockage of the oil port of the oil inlet pipe 3. At this time, the external oil will enter the oil inlet pipe 3 and enter the interior through the second guide hole 711, and then enter the inner end of the oil inlet pipe 3 through the second through hole 731, and then enter the pump body 1 to complete the suction.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A piston-type reciprocating high-pressure oil pump sealing device, characterized in that: The pump body includes an inlet pipe and an outlet pipe, which are respectively connected to the inlet and outlet ports of the pump body. The outlet pipe, the inlet pipe and the pump body are connected by a connecting component. The inlet pipe is equipped with a second outlet component, and the outlet pipe is equipped with a first outlet component. The tops of the outlet pipe and the inlet pipe are connected to a connecting joint. A fastening component is fixedly installed on the pump body between the outlet pipe and the inlet pipe, and the fastening component is used to press and fasten the connecting joint. The fastening assembly includes a fixing plate, a clamping plate, and fastening bolts. A fixing plate is fixedly installed on the pump body between the oil outlet pipe and the oil inlet pipe. The joints are connected by a clamping plate, and the clamping plate is snapped into the joints via a bayonet. Fastening bolts are installed between the clamping plate and the fixing plate. The first discharge assembly includes a first annular block, an external sealing component, a first internal sealing component, a first spring, a sealing post, and a guide post. A first annular block is fixedly installed inside the oil outlet pipe, and a first through hole is provided inside the first annular block. A guide post is fixedly installed on the end face inside the oil outlet pipe, and a first spring is fitted on the guide post. An external sealing component is installed at the end of the guide post. The sealing component has a first internal sealing component installed on one side of the external sealing component, and the first internal sealing component extends into the first annular block. The second outlet component includes a second internal plug, a pusher, a second annular block, and a second internal sealing component. The second annular block is fixedly installed inside the oil inlet pipe, and a second through hole is provided inside the second annular block. The second internal sealing component is installed on the second annular block through the second through hole. The pusher is fixedly installed inside the oil inlet pipe, and the pusher passes through the second internal sealing component and its end is installed and connected to the second internal plug. The second internal plug is provided with a second guide hole.

2. The plunger-type reciprocating high-pressure oil pump sealing device according to claim 1, characterized in that: The docking components include a rubber gasket and a mounting base. The inner ends of the oil outlet pipe and the oil inlet pipe are both docked with the mounting base. The oil outlet pipe and the oil inlet pipe are connected to the oil inlet and outlet ports of the pump body through the mounting base, and a rubber gasket is provided between the mounting base and the pump body.

3. The plunger-type reciprocating high-pressure oil pump sealing device according to claim 2, characterized in that: The external sealing component includes a reciprocating plug, a first guide hole, a first rubber ring, and a connecting seat. The end of the first internal sealing component is fitted with a reciprocating plug, the reciprocating plug is embedded with a first rubber ring, and the reciprocating plug is provided with a first guide hole corresponding to the sealing column.

4. The plunger-type reciprocating high-pressure oil pump sealing device according to claim 3, characterized in that: The top of the oil outlet pipe and the oil inlet pipe are provided with a second oil guide port and an oil inlet port. The ports of the second oil guide port and the oil inlet port are fixedly installed with communicating oil nozzles, and the top of the oil nozzles are connected to the connector.

5. The plunger-type reciprocating high-pressure oil pump sealing device according to claim 4, characterized in that: The first built-in sealing component and the second built-in sealing component have the same structure. The first built-in sealing component includes a first built-in plug and a second rubber ring. The first built-in plug is installed in both the first through hole and the second through hole, and the second rubber ring is embedded in the first built-in plug. The first built-in plug in the first through hole is installed and connected to the connecting seat, and the first built-in plug in the second through hole is installed and connected to the first built-in sealing component.

6. The plunger-type reciprocating high-pressure oil pump sealing device according to claim 5, characterized in that: The pushing component includes a guide rod, a second spring, and a fixing frame. The fixing frame is fixedly installed inside the oil inlet pipe. The guide rod is installed on the fixing frame and passes through the second built-in sealing component and is fixedly connected. The end of the guide rod is fixedly connected to the second built-in sealing component. The second spring is fitted on the guide rod between the second built-in sealing component and the fixing frame.

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