Hydraulic structure of double-row radial plunger pump

Abstract

The utility model relates to the technical field of plunger pumps, in particular to a hydraulic structure of a double-row radial plunger pump. The hydraulic structure comprises a first valve seat and a second valve seat, wherein the first valve seat is provided with a first liquid suction channel penetrating through a seat body and a first liquid drainage channel communicated with the first liquid suction channel in the seat body; the second valve seat is provided with a second liquid discharge channel penetrating through the seat body and a second liquid suction channel communicated with the second liquid discharge channel in the seat body; the valve element assembly is embedded in the base and used for controlling liquid to flow from the liquid suction channel to the liquid drainage channel in a one-way mode. Wherein a liquid suction sleeve and a liquid discharge sleeve are arranged between the first valve seat and the second valve seat, the liquid discharge sleeve is communicated with the first liquid discharge channel and the second liquid discharge channel, and the liquid suction sleeve is communicated with the first liquid suction channel and the second liquid suction channel, so that liquid flows in from the first valve seat and flows out from the second valve seat. In the utility model, the hydraulic structure consists of the two valve seats, so that the structure is compact, and the splicing is convenient.

Description

Technical Field

[0001] This utility model relates to the field of plunger pump technology, and in particular to a hydraulic structure for a double-row radial plunger pump. Background Technology

[0002] A piston pump is an important component of a hydraulic system. It achieves oil suction and pressure by the reciprocating motion of a piston within a piston seal sleeve, which changes the volume of the sealed working cavity. Piston pumps are widely used in applications requiring high pressure, high flow rates, and flow rate regulation.

[0003] In existing technology, the hydraulic structure of a plunger pump typically consists of several suction valves and discharge valves arranged circumferentially around a drive shaft. A protrusion is provided at the position where the drive shaft abuts against the suction and discharge valves. When the plunger pump is operating, the protrusion rotates around the drive shaft, sequentially opening and closing the suction and discharge valves, thus allowing the oil to flow in one direction. However, in the above hydraulic structure, the connection methods of the suction and discharge valves are inconsistent, and the clearance volume of the suction and discharge valves is relatively large, resulting in a complex structure, large size, and difficulty in disassembly and maintenance of the plunger pump. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in related technologies. To this end, this invention proposes a hydraulic structure for a double-row radial piston pump to optimize the structure, reduce the void volume between the valve seat and the valve core, and facilitate the combined assembly and use of the double rows.

[0005] This utility model provides a hydraulic structure for a double-row radial piston pump, the hydraulic structure comprising:

[0006] The first valve seat is provided with a first liquid suction channel that penetrates the seat body, and a first liquid discharge channel that communicates with the first liquid suction channel inside the seat body.

[0007] The second valve seat is provided with a second drain channel that penetrates the seat body, and a second suction channel that communicates with the second drain channel inside the seat body;

[0008] The valve core assembly, embedded in the seat, is used to control the unidirectional flow of liquid from the suction channel to the discharge channel;

[0009] The first valve seat and the second valve seat are provided with a liquid suction sleeve and a liquid discharge sleeve. The liquid discharge sleeve connects the first liquid discharge channel and the second liquid discharge channel, and the liquid suction sleeve connects the first liquid suction channel and the second liquid suction channel, so that liquid flows in from the first valve seat and flows out from the second valve seat.

[0010] According to the hydraulic structure of a double-row radial piston pump provided by this utility model, the valve core assembly includes a suction valve core, a guide block, and a discharge valve core;

[0011] The guide block is embedded in the liquid suction channel and its upper end face covers the connection between the liquid suction channel and the liquid discharge channel. The liquid discharge valve core is located above the guide block and abuts against the upper end face of the guide block. The liquid suction valve core is located below the guide block and abuts against the lower end face of the guide block.

[0012] According to the hydraulic structure of the double-row radial piston pump provided by this utility model, the guide block is provided with a through hole in the middle, and the guide block is provided with a drainage hole extending from its outer peripheral wall to its lower end face; the liquid flows from the suction channel through the drainage hole and then through the through hole to the discharge channel.

[0013] According to the hydraulic structure of the double-row radial plunger pump provided by this utility model, the guide block is set in a cylindrical shape, and a plurality of drainage holes are evenly distributed along the circumference of the guide block and an orifice is formed on the lower end face of the guide block with the through hole as the center and arranged in a circle.

[0014] According to the hydraulic structure of the double-row radial plunger pump provided by this utility model, a cylindrical sidewall is arranged around the guide block in the suction channel, and an annular cavity is formed between the cylindrical sidewall and the outer peripheral wall of the guide block.

[0015] According to the hydraulic structure of a double-row radial plunger pump provided by this utility model, the suction valve core includes a suction spring sleeve, a suction spring, and a valve plate. The suction spring sleeve is arranged to coincide with the central axis of the guide block. The suction spring is embedded in the suction spring sleeve. The valve plate is movably arranged between the suction spring and the guide block to cover the drainage hole.

[0016] According to the hydraulic structure of the dual-row radial piston pump provided by this utility model, the discharge valve core includes a discharge spring seat, a discharge spring, and a discharge valve plug. The discharge valve plug is arranged to coincide with the central axis of the through hole. The discharge spring seat is fixed in the discharge channel. The discharge spring is telescopically arranged between the discharge spring seat and the discharge valve plug to allow liquid to flow unidirectionally from the through hole to the discharge channel.

[0017] According to the hydraulic structure of the double-row radial piston pump provided by this utility model, the seat body of the first valve seat and the seat body of the second valve seat are configured to be composed of an upper seat body and a lower seat body spliced ​​together, the discharge valve core and the guide block are embedded in the upper seat body, and the suction valve core is embedded in the lower seat body.

[0018] According to the hydraulic structure of the double-row radial plunger pump provided by this utility model, the first suction channel is in the first valve seat, extends upward from the bottom surface of the lower seat to the upper seat, and then extends upward from the bottom surface of the upper seat for a period of time before extending horizontally to the side surface of the upper seat.

[0019] The second drainage channel is located inside the second valve seat, extending upward from the bottom surface of the lower seat to the upper seat, and then extending upward from the bottom surface of the upper seat for a distance before extending horizontally to the side surface of the upper seat.

[0020] According to the hydraulic structure of the double-row radial plunger pump provided by this utility model, it also includes a plunger sealing sleeve with a plunger hole in the center. The plunger sealing sleeve is embedded in the lower seat body and is arranged to coincide with the central axis of the suction valve core.

[0021] The above-mentioned one or more technical solutions of this utility model have at least one of the following technical effects: the two valve seats are connected by the suction sleeve and the discharge sleeve, making the structure of the hydraulic structure more compact; it is more suitable for double-row joint assembly and use, the splicing is convenient, and the gap volume between the valve seat and the valve core is reduced.

[0022] In addition to the technical problems solved by this utility model, the technical features of the technical solutions constituted by this utility model, and the advantages brought about by these technical features, as described above, other technical features of this utility model and the advantages brought about by these technical features will be further explained in conjunction with the accompanying drawings, or can be learned through the practice of this utility model. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies 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.

[0024] Figure 1 A cross-sectional schematic diagram of the hydraulic structure of the double-row radial piston pump provided in this embodiment of the utility model.

[0025] Figure 2 This is a cross-sectional structural diagram of the first valve seat provided in an embodiment of the present utility model.

[0026] Figure 3 A three-dimensional structural diagram of the guide block provided in an embodiment of this utility model.

[0027] Figure 4 A cross-sectional structural diagram of the guide block provided in an embodiment of this utility model.

[0028] Figure label:

[0029] 100, First valve seat; 110, First suction channel; 120, First discharge channel; 200, Second valve seat; 210, Second suction channel; 220, Second discharge channel; 300, Valve core assembly; 310, Suction valve core; 311, Suction spring sleeve; 312, Suction spring; 313, Valve plate; 320, Guide block; 321, Through hole; 322, Drainage hole; 330, Discharge valve core; 331, Discharge spring seat; 332, Discharge spring; 333, Discharge valve plug; 400, Suction sleeve; 500, Discharge sleeve; 600, Plunger sealing sleeve; 610, Plunger hole; 1, Upper seat body; 2, Lower seat body; 3, Annular cavity. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly described below with reference to the accompanying drawings. 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.

[0031] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0033] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0035] like Figures 1 to 4 As shown in the embodiment of this utility model, a hydraulic structure of a double-row radial piston pump is introduced. The hydraulic structure mainly includes: a first valve seat 100, a second valve seat 200, and valve core assemblies 300 respectively embedded in the seat bodies of the first and second valve seats.

[0036] Specifically, the first valve seat 100 is provided with a first liquid suction channel 110 that penetrates the seat body, and a first liquid discharge channel 120 that communicates with the first liquid suction channel 110 in the seat body.

[0037] The second valve seat 200 is provided with a second drain channel 220 that penetrates the seat body, and a second suction channel 210 that communicates with the second drain channel 220 within the seat body.

[0038] The valve core assembly 300 is embedded in the seat. That is, the two valve core assemblies 300 are respectively embedded in the first valve seat 100 and the second valve seat 200, and are used to control the unidirectional flow of liquid from the suction channel to the discharge channel.

[0039] Specifically, the valve core assembly 300 is embedded in the seat body at a position where the first liquid suction channel 110 and the first liquid discharge channel 120 communicate. Alternatively, the valve core assembly 300 is embedded in the seat body at a position where the second liquid suction channel 210 and the second liquid discharge channel 220 communicate. That is, the first liquid discharge channel 120 and the second liquid suction channel 210 are respectively configured to extend from the outer side of the seat body to the valve core assembly 300.

[0040] The first valve seat 100 and the second valve seat 200 are provided with a suction sleeve 400 and a discharge sleeve 500. The discharge sleeve 500 connects the first discharge channel 120 and the second discharge channel 220. The suction sleeve 400 connects the first suction channel 110 and the second suction channel 210.

[0041] Thus, a guideway for two valve core assemblies 300 connected in series is formed between the first valve seat 100 and the second valve seat 200. When the plunger pump is working, the hydraulic structure enables liquid to flow in from the first valve seat 100 and out from the second valve seat 200, achieving the effect of liquid suction and discharge on the same side.

[0042] Furthermore, the first valve seat 100 and the second valve seat 200 are also provided with plunger sealing sleeves 600. A plunger hole 610 is provided at the center of the plunger sealing sleeve 600. The plunger sealing sleeve 600 is arranged to coincide with the central axis of the valve core assembly 300. The valve core assembly 300 includes a suction valve core 310, a guide block 320, and a discharge valve core 330. The plunger reciprocates up and down within the plunger hole 610.

[0043] When the plunger moves upward, the suction valve 310 closes. Liquid moves upward through the guide block 320 and pushes open the discharge valve 330, entering the discharge channel. When the plunger moves downward, the discharge valve 330 closes, the suction valve 310 opens, and liquid enters the suction valve 310 from the suction channel through the guide block 320. One reciprocating motion of the plunger constitutes one cycle.

[0044] In this embodiment, the two valve seats are connected by the suction sleeve 400 and the discharge sleeve 500, making the hydraulic structure more compact; it is more suitable for dual-row joint assembly and is easy to splice, and the gap volume between the valve seat and the valve core is reduced.

[0045] Based on the above embodiments, another embodiment of the present invention introduces a hydraulic structure for a double-row radial piston pump.

[0046] like Figure 1 As shown, the valve core assembly 300 includes a suction valve core 310, a guide block 320, and a discharge valve core 330.

[0047] The guide block 320 is embedded in the liquid suction channel. The guide block 320 also covers the connection between the liquid suction channel and the liquid discharge channel with its upper end face.

[0048] The drain valve core 330 is located above the guide block 320 and abuts against the upper end face of the guide block 320.

[0049] The liquid suction valve core 310 is located below the guide block 320 and abuts against the lower end face of the guide block 320.

[0050] Furthermore, the guide block 320 has a through hole 321 extending vertically through its center. The guide block 320 also has a drainage hole 322 extending from its outer peripheral wall to its lower end face. Liquid flows from the suction channel through the drainage hole 322 and then through the through hole 321 to the discharge channel.

[0051] Furthermore, the guide block 320 is cylindrical. A plurality of drainage holes 322 are evenly distributed along the circumference of the guide block 320. The drainage holes 322 form openings arranged circumferentially around the through hole 321 on the lower end face of the guide block 320.

[0052] The liquid suction valve core 310 includes a liquid suction spring sleeve 311, a liquid suction spring 312, and a valve plate 313. The liquid suction spring sleeve 311 is arranged to coincide with the central axis of the guide block 320. The liquid suction spring 312 is embedded in the liquid suction spring sleeve 311. The valve plate 313 is movably disposed between the liquid suction spring 312 and the guide block 320 to cover the drainage hole 322.

[0053] Specifically, such as Figure 2 As shown, a suction spring 312 and a valve plate 313 are installed inside the suction spring sleeve 311. The suction spring 312 is used to close the valve plate 313. The outer diameter of the valve plate 313 is slightly smaller than the inner diameter of the suction spring sleeve 311.

[0054] The drain valve core 330 includes a drain spring seat 331, a drain spring 332, and a drain valve plug 333. The drain valve plug 333 is arranged to coincide with the central axis of the through hole 321. The drain spring seat 331 is fixed in the drain channel.

[0055] The drain spring 332 is telescopically disposed between the drain spring seat 331 and the drain valve plug 333, for allowing liquid to flow unidirectionally from the through hole 321 to the drain channel. Specifically, the drain spring seat 331 and the seat body are tightly fitted together. The drain spring 332 is installed inside the drain spring seat 331. The guide rod of the drain valve plug 333 moves within the guide hole of the drain spring seat 331.

[0056] During the operation of the plunger pump, when the plunger moves upward, the suction valve 310 closes. The internal volume of the suction spring sleeve 311 decreases. Liquid flows upward from the cavity of the suction spring sleeve 311 through the through hole 321 of the guide block 320, opening the discharge valve 330, and then flowing into the discharge channel. When the plunger moves downward, the discharge valve 330 closes. The internal volume of the suction spring sleeve 311 increases, and the suction valve 310 opens. Liquid flows from the suction channel through the drainage hole 322 into the cavity of the suction spring sleeve 311, and this cycle repeats.

[0057] Preferably, a cylindrical sidewall is provided circumferentially around the guide block 320 in the liquid absorption channel. An annular cavity 3 is formed between the cylindrical sidewall and the outer peripheral wall of the guide block 320. The annular cavity 3 is filled with water to facilitate the guide block 320 to fully absorb the liquid.

[0058] Based on the above embodiments, another embodiment of the present invention introduces a hydraulic structure for a double-row radial piston pump.

[0059] like Figure 1 and Figure 2 As shown, both the seat of the first valve seat 100 and the seat of the second valve seat 200 are composed of an upper seat body 1 and a lower seat body 2. The drain valve core 330 and the guide block 320 are embedded in the upper seat body 1. The suction valve core 310 is embedded in the lower seat body 2.

[0060] The plunger sealing sleeve 600 is installed in the lower seat body 2. The plunger reciprocates up and down within the plunger hole 610 of the plunger sealing sleeve 600.

[0061] Specifically, the suction valve core 310 includes a suction spring sleeve 311, a suction spring 312, and a valve plate 313. The suction spring sleeve 311 is mounted on the lower seat 2. The suction spring 312 is embedded within the suction spring sleeve 311. The outer diameter of the valve plate 313 is slightly smaller than the inner diameter of the suction spring sleeve 311. The valve plate 313 is movably positioned between the suction spring 312 and the guide block 320.

[0062] The drain valve core 330 includes a drain spring seat 331, a drain spring 332, and a drain valve plug 333. The drain spring seat 331 is installed inside the upper seat body 1. The drain spring 332 is telescopically disposed between the drain spring seat 331 and the drain valve plug 333. The drain spring seat 331 and the upper seat body 1 are tightly fitted together. Furthermore, the drain spring 332 is embedded within the drain spring seat 331. The guide rod of the drain valve plug 333 moves within the guide hole of the drain spring seat 331.

[0063] Based on the above embodiments, another embodiment of the present invention introduces a hydraulic structure for a double-row radial piston pump.

[0064] The first suction channel 110 is located within the first valve seat 100, extending upward from the bottom surface of the lower seat 2 to the upper seat 1, and then extending upward from the bottom surface of the upper seat 1 for a distance before extending horizontally to the side surface of the upper seat 1.

[0065] The second drainage channel 220 is located inside the second valve seat 200, extending upward from the bottom surface of the lower seat 2 to the upper seat 1, and then extending upward from the bottom surface of the upper seat 1 for a distance before extending horizontally to the side of the upper seat 1.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not 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.

[0067] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic structure for a double-row radial piston pump, characterized in that, include: The first valve seat (100) is provided with a first liquid suction channel (110) that penetrates the seat body, and a first liquid discharge channel (120) that communicates with the first liquid suction channel (110) in the seat body. The second valve seat (200) is provided with a second drain channel (220) that penetrates the seat body, and a second suction channel (210) that communicates with the second drain channel (220) in the seat body. A valve core assembly (300) is embedded in the seat and is used to control the unidirectional flow of liquid from the suction channel to the discharge channel; The first valve seat (100) and the second valve seat (200) are provided with a suction sleeve (400) and a discharge sleeve (500). The discharge sleeve (500) connects the first discharge channel (120) and the second discharge channel (220), and the suction sleeve (400) connects the first suction channel (110) and the second suction channel (210), so that liquid flows in from the first valve seat (100) and flows out from the second valve seat (200).

2. The hydraulic structure of the double-row radial piston pump according to claim 1, characterized in that, The valve core assembly (300) includes a suction valve core (310), a guide block (320), and a discharge valve core (330). The guide block (320) is embedded in the liquid suction channel and its upper end face covers the connection between the liquid suction channel and the liquid discharge channel. The liquid discharge valve core (330) is located above the guide block (320) and abuts against the upper end face of the guide block (320). The liquid suction valve core (310) is located below the guide block (320) and abuts against the lower end face of the guide block (320).

3. The hydraulic structure of the double-row radial piston pump according to claim 2, characterized in that, The guide block (320) has a through hole (321) running vertically through its center, and the guide block (320) has a drainage hole (322) extending from its outer peripheral wall to its lower end face; the liquid flows from the liquid suction channel through the drainage hole (322) and then through the through hole (321) to the liquid discharge channel.

4. The hydraulic structure of the double-row radial piston pump according to claim 3, characterized in that, The guide block (320) is cylindrical in shape, and a plurality of drainage holes (322) are evenly distributed along the circumference of the guide block (320) and form an opening on the lower end face of the guide block (320) with the through hole (321) as the center and arranged in a circle.

5. The hydraulic structure of the double-row radial piston pump according to claim 4, characterized in that, In the liquid suction channel, a cylindrical sidewall is provided around the guide block (320) in the circumference, and an annular cavity is formed between the cylindrical sidewall and the outer peripheral wall of the guide block (320).

6. The hydraulic structure of the double-row radial piston pump according to any one of claims 3-5, characterized in that, The liquid suction valve core (310) includes a liquid suction spring sleeve (311), a liquid suction spring (312), and a valve plate (313). The liquid suction spring sleeve (311) is arranged to coincide with the central axis of the guide block (320). The liquid suction spring (312) is embedded in the liquid suction spring sleeve (311). The valve plate (313) is movably arranged between the liquid suction spring (312) and the guide block (320) to cover the drainage hole (322).

7. The hydraulic structure of the double-row radial piston pump according to claim 6, characterized in that, The drain valve core (330) includes a drain spring seat (331), a drain spring (332), and a drain valve plug (333). The drain valve plug (333) is arranged to coincide with the central axis of the through hole (321). The drain spring seat (331) is fixed in the drain channel. The drain spring (332) is telescopically arranged between the drain spring seat (331) and the drain valve plug (333) to allow liquid to flow unidirectionally from the through hole (321) to the drain channel.

8. The hydraulic structure of the double-row radial piston pump according to claim 7, characterized in that, The seat of the first valve seat (100) and the seat of the second valve seat (200) are configured to be composed of an upper seat (1) and a lower seat (2). The drain valve core (330) and the guide block (320) are embedded in the upper seat (1), and the suction valve core (310) is embedded in the lower seat (2).

9. The hydraulic structure of the double-row radial piston pump according to claim 8, characterized in that, The first suction channel (110) is located in the first valve seat (100), extending upward from the bottom surface of the lower seat (2) to the upper seat (1), and then extending upward from the bottom surface of the upper seat (1) for a distance before extending horizontally to the side of the upper seat (1). The second drainage channel (220) is located in the second valve seat (200), extending upward from the bottom surface of the lower seat (2) to the upper seat (1), and then extending upward from the bottom surface of the upper seat (1) for a distance before extending horizontally to the side of the upper seat (1).

10. The hydraulic structure of the double-row radial piston pump according to claim 9, characterized in that, It also includes a plunger sealing sleeve (600) with a plunger hole (610) in the center. The plunger sealing sleeve (600) is embedded in the lower seat body (2) and is arranged to coincide with the central axis of the suction valve core (310).

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