Pump head sealing structure of reciprocating type high-pressure pump

Abstract

The utility model provides a pump head sealing structure of a reciprocating high-pressure pump. The pump head sealing structure comprises a mounting plate, a high-pressure pump is fixedly connected to the top surface of the mounting plate, a liquid inlet assembly is mounted at the liquid inlet end of the high-pressure pump, a first pipeline assembly is connected to one end of the liquid inlet assembly, and a liquid discharging assembly is mounted at the liquid discharging end of the high-pressure pump; the liquid inlet assembly comprises a liquid inlet pipe, the liquid inlet end of the high-pressure pump is fixedly connected with the liquid inlet pipe, one end of the liquid inlet pipe is fixedly connected with a flange plate, round holes are formed in the circumference of one side of the flange plate in an arrayed mode, an opposite inserting groove is formed in the middle of one side of the flange plate, and a sealing groove is formed in one side of the inner cavity wall of the opposite inserting groove. And the inner cavity wall of the flange plate is fixedly connected with an extension pipe. According to the high-pressure pump, the liquid inlet assembly, the liquid discharge assembly, the first pipeline assembly and the second pipeline assembly are matched with one another, so that sealing connection of the liquid inlet pipeline and the liquid outlet pipeline of the high-pressure pump can be achieved, and liquid leakage at the joint of the liquid inlet pipeline and the liquid outlet pipeline is avoided.

Description

Technical Field

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

[0002] A high-pressure reciprocating pump consists of an electric motor, coupling, reducer, transmission components, pump head, and common base. It is powered by an electric motor that drives a crankshaft via a reducer, belt drive, or continuously variable transmission (CVT). This crankshaft rotates, pushing a connecting rod through a slider (crosshead) to cause a plunger to reciprocate linearly. The pump head inlet valve opens and closes to achieve the purpose of suction and discharge of liquid.

[0003] Currently, some traditional high-pressure reciprocating pumps are designed and manufactured with flanges at both the inlet and outlet ends. When connecting the high-pressure reciprocating pump to an external pipeline, a flange needs to be welded onto the external pipeline before connection. During connection, first, a gasket is installed between the two flanges, and then the two flanges are mated together. When mating, it is necessary to ensure that the holes on the two sets of flanges are aligned. After mating, bolts and nuts are used to fix them together, thus completing the sealed connection between the high-pressure reciprocating pump and the external pipeline.

[0004] Because the aforementioned high-pressure reciprocating pump requires multiple sets of bolts and nuts to achieve a sealed connection when connected to external pipelines, this connection method is not only time-consuming and labor-intensive, but also reduces the efficiency of installation or disassembly. In addition, since the bolts and nuts are exposed to the outside after installation, they will rust due to liquid vapor in the air over time, making it inconvenient for later disassembly by staff to facilitate the quick replacement of the sealing gasket. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a reciprocating high-pressure pump head sealing structure, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A reciprocating high-pressure pump head sealing structure includes a mounting plate; a high-pressure pump is fixedly connected to the top surface of the mounting plate; an inlet assembly is installed at the inlet end of the high-pressure pump, one end of the inlet assembly is connected to a first pipe assembly; a drain assembly is installed at the outlet end of the high-pressure pump, one end of the drain assembly is connected to a second pipe assembly; the inlet assembly includes an inlet pipe, the inlet end of the high-pressure pump is fixedly connected to the inlet pipe, one end of the inlet pipe is fixedly connected to a flange, one side of the flange has a circumferential array of circular holes, a matching slot is provided in the middle of one side of the flange, a sealing groove is provided on one side of the inner wall of the matching slot, an extension pipe is fixedly connected to the inner wall of the flange, a connecting groove is provided on the outer surface of the extension pipe between the inner walls of the flange, a mating component is installed on the outer surface of the inlet pipe, and a sealing ring is installed in the sealing groove.

[0008] Furthermore, the docking component includes a ring plate, the outer surface of the liquid inlet pipe is fixedly connected to the ring plate, and connecting rods are fixedly connected at equal intervals on the circumferential surface of the ring plate. One end of the connecting rod is fixedly connected to a locking wedge block.

[0009] Furthermore, the sealing ring includes a ring cylinder, the ring cylinder is installed in the sealing groove, and a ring gasket is fixedly connected to the middle of the inner wall of the ring cylinder. The drainage assembly adopts the same structure as the inlet assembly and is installed symmetrically.

[0010] Furthermore, the first pipe assembly includes a connecting pipe, one end of which is fixedly connected to a insertion pipe, an annular disc is fixedly connected to the outer surface of the insertion pipe, insertion rods are arranged in a circular array on one side of the annular disc, one end of the insertion rods is inserted into a circular hole, a pair of insertion tubes are fixedly connected to the inner wall of the insertion pipe, one end of the pair of insertion tubes is inserted into a connecting groove, and an auxiliary locking component is installed on the outer surface of the connecting pipe.

[0011] Furthermore, the first pipe assembly also includes a stepped groove, one side of the insertion pipe is fixedly connected to the stepped groove, the inner wall of the stepped groove is circumferentially arrayed with reset damping rods, one end of the reset damping rod is fixedly connected to a pressing plate, and one side of the pressing plate is in contact with one side of the annular gasket.

[0012] Furthermore, the auxiliary locking component includes a ring, the outer surface of the connecting pipe is fixedly connected to the ring, one side of the ring is fixedly connected to a torsion spring, one end of the torsion spring is fixedly connected to a nut, and one side of the nut is circumferentially arrayed with auxiliary locking blocks; the second pipe assembly adopts the same structure as the first pipe assembly and is symmetrically installed.

[0013] This utility model provides a reciprocating high-pressure pump head sealing structure. Compared with the prior art, it has the following advantages:

[0014] 1. By using the extension tube and the insertion tube together, the flow of liquid inside the tube is prevented from scouring the ring gasket, which would accelerate the aging of the ring gasket and affect the sealing performance in the later stage.

[0015] 2. The interlocking of the round hole and the insert rod prevents the inlet pipe and the connecting pipe from rotating and misaligning during the operation of the high-pressure pump, thus avoiding affecting the sealing connection between them;

[0016] 3. By connecting the docking component and the auxiliary locking component, the connecting tube and the inlet tube are fixedly connected. This facilitates disassembly and makes the connection between the two more secure. At the same time, when the ring gasket contracts, the connecting tube moves closer to the inlet tube, preventing gaps from forming between the two.

[0017] 4. The sealing gasket can fill the gap that occurs when the liquid inlet assembly is connected to the first pipeline assembly, thus preventing leakage due to the gap;

[0018] 5. When the first pipe assembly is connected to the liquid inlet assembly, under the action of the reset damping rod and the extrusion plate, a constant extrusion force is applied to one end of the ring gasket, thereby preventing leakage caused by gaps at the connection between the first pipe assembly and the liquid inlet assembly due to aging or shrinkage of the ring gasket. Attached Figure Description

[0019] 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.

[0020] Figure 1 A schematic diagram of the overall structure of this utility model is shown;

[0021] Figure 2 A schematic diagram of the liquid inlet assembly and the first pipeline assembly of this utility model is shown;

[0022] Figure 3 This diagram shows a disassembled structural diagram of the liquid inlet assembly and the first pipeline assembly of this utility model;

[0023] Figure 4 This diagram shows a structural schematic of the liquid inlet assembly and the first pipe assembly of the present invention from another perspective.

[0024] Figure 5 This diagram shows a partial cross-sectional view of the liquid inlet assembly and the first pipeline assembly of this utility model.

[0025] Figure 6This diagram shows a partial cross-sectional view of the liquid inlet assembly and the first pipeline assembly of this utility model.

[0026] The diagram shows: 1. Mounting plate; 2. High-pressure pump; 3. Inlet assembly; 31. Inlet pipe; 32. Flange; 33. Round hole; 34. Interlocking slot; 35. Sealing groove; 36. Extension pipe; 37. Connecting groove; 38. Connecting component; 381. Ring plate; 382. Connecting rod; 383. Locking wedge; 39. Sealing ring; 391. Ring cylinder; 392. Ring gasket; 4. First pipeline assembly; 41. Connecting pipe; 42. Insertion pipe; 43. Ring disc; 44. Insertion rod; 45. Interlocking pipe; 46. Auxiliary locking component; 461. Circular ring; 462. Torsion spring; 463. Nut; 464. Auxiliary locking block; 47. Stepped groove; 48. Reset damping rod; 49. Squeezing disc; 5. Drainage assembly; 6. Second pipeline assembly. Detailed Implementation

[0027] 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.

[0028] Example 1

[0029] To address the technical problems in the background section, the following reciprocating high-pressure pump head sealing structure is provided:

[0030] Combination Figures 1-6 As shown, the reciprocating high-pressure pump head sealing structure provided by this utility model includes a mounting plate 1; a high-pressure pump 2 is fixedly connected to the top surface of the mounting plate 1, an inlet assembly 3 is installed at the inlet end of the high-pressure pump 2, a first pipe assembly 4 is connected to one end of the inlet assembly 3, an outlet assembly 5 is installed at the outlet end of the high-pressure pump 2, and a second pipe assembly 6 is connected to one end of the outlet assembly 5; the inlet assembly 3 includes an inlet pipe 31, the inlet end of the high-pressure pump 2 is fixedly connected to the inlet pipe 31, a flange 32 is fixedly connected to one end of the inlet pipe 31, a circular array of holes 33 is arranged on one side of the flange 32, a matching slot 34 is provided in the middle of one side of the flange 32, a sealing groove 35 is provided on one side of the inner wall of the matching slot 34, an extension pipe 36 is fixedly connected to the inner wall of the flange 32, a connecting groove 37 is provided on the outer surface of the extension pipe 36 and between the inner walls of the flange 32, a docking component 38 is installed on the outer surface of the inlet pipe 31, and a sealing ring 39 is installed in the sealing groove 35.

[0031] The cooperation between the extension tube 36 and the insertion tube prevents the liquid inside the tube from scouring the ring gasket 392, thus accelerating the aging of the ring gasket 392 and affecting the sealing performance in the later stage.

[0032] The cooperation between the round hole 33 and the insertion rod 44 prevents the inlet pipe 31 and the connecting pipe 41 from rotating and misaligning when the high-pressure pump 2 is working, thus avoiding affecting the sealing connection between the two.

[0033] In this embodiment, the docking component 38 includes a ring plate 381. The ring plate 381 is fixedly connected to the outer surface of the liquid inlet pipe 31. Connecting rods 382 are fixedly connected at equal intervals on the circumferential surface of the ring plate 381. A locking wedge block 383 is fixedly connected to one end of the connecting rod 382.

[0034] By connecting the docking component 38 with the auxiliary locking component 46, the connecting pipe 41 and the liquid inlet pipe 31 are fixedly connected. This facilitates disassembly and makes the connection between the two more secure. At the same time, when the ring gasket 392 contracts, the connecting pipe 41 moves closer to the liquid inlet pipe 31, preventing gaps between the two.

[0035] Example 2

[0036] like Figures 1-6 As shown, based on the above embodiments, this embodiment further provides the following:

[0037] The sealing ring 39 includes a ring cylinder 391. The ring cylinder 391 is installed in the sealing groove 35. A ring gasket 392 is fixedly connected to the middle of the inner wall of the ring cylinder 391. The drain assembly 5 adopts the same structure as the inlet assembly 3 and is installed symmetrically.

[0038] The sealing ring 39 can compensate for the gap generated when the liquid inlet assembly 3 is connected to the first pipeline assembly 4, thus preventing leakage due to the gap.

[0039] Example 3

[0040] like Figures 1-6 As shown, based on the above embodiments, this embodiment further provides the following:

[0041] The first pipe assembly 4 includes a connecting pipe 41, one end of which is fixedly connected to a insertion pipe 42. An annular disc 43 is fixedly connected to the outer surface of the insertion pipe 42. Insert rods 44 are arranged in a circumferential array on one side of the annular disc 43. One end of each insertion rod 44 is inserted into a circular hole 33. A pair of insertion tubes 45 are fixedly connected to the inner wall of the insertion pipe 42. One end of each insertion tube 45 is inserted into a connecting groove 37. An auxiliary locking component 46 is installed on the outer surface of the connecting pipe 41. The first pipe assembly 4 also includes a stepped groove 47. A stepped groove 47 is fixedly connected to one side of the insertion pipe 42. Reset damping rods 48 are arranged in a circumferential array on the inner wall of the stepped groove 47. One end of each reset damping rod 48 is fixedly connected to a pressing disc 49. One side of the pressing disc 49 is in contact with one side of the annular gasket 392. The auxiliary locking component 46 includes a ring 461. The ring 461 is fixedly connected to the outer surface of the connecting pipe 41. A torsion spring 462 is fixedly connected to one side of the ring 461. A nut 463 is fixedly connected to one end of the torsion spring 462. An auxiliary locking block 464 is arranged in a circumferential array on one side of the nut 463. The second pipe assembly 6 adopts the same structure as the first pipe assembly 4 and is installed symmetrically.

[0042] When the first pipe assembly 4 is connected to the liquid inlet assembly 3, under the action of the reset damping rod 48 and the extrusion plate 49, a constant extrusion force is applied to one end of the ring gasket 392, thereby preventing the ring gasket 392 from leaking due to aging or shrinkage, which could cause gaps at the connection between the first pipe assembly 4 and the liquid inlet assembly 3.

[0043] Working principle and usage process of this utility model:

[0044] In use:

[0045] The high-pressure pump uses a 3DP110 high-pressure plunger pump;

[0046] In use, firstly, rotate the nut 463 using an external tool. As the nut 463 rotates, it will cause the auxiliary locking block 464 and torsion spring 462 to rotate. When the auxiliary locking block 464 and the locking inclined block 383 are misaligned, the connection begins. During connection, first install the sealing ring 39. During installation, insert one end of the ring cylinder 391 between the extrusion plate 49 and the inner wall of the stepped groove 47. After insertion, one side of the ring pad 392 will contact one side of the extrusion plate 49. After contact, the operator begins the connection. During connection, first insert one end of the insertion tube 42 into the slot 34. After insertion, the other end of the ring cylinder 391 will be inserted into the sealing groove 35. During insertion, the insertion rod 44 also needs to be aligned with the round hole 33 and inserted into the round hole 33. After insertion, the insertion tube 45 is also... The tool is inserted into the connecting groove 37. After insertion, the tool on the nut 463 is loosened. When the nut 463 is loosened, it will begin to reset under the action of the torsion spring 462. During the reset, it will drive the auxiliary locking block 464 to rotate, which will contact the locking inclined block 383 and squeeze the locking inclined block 383. Then, it will pull the first pipe assembly 4 towards the liquid inlet assembly 3 to squeeze the ring gasket 392 to achieve a seal between the two. When the ring gasket 392 shrinks later, the remaining force of the torsion spring will drive the nut 463 to rotate. At this time, with the cooperation of the locking inclined block 383, the connecting pipe 41 moves closer to the liquid inlet pipe 31, reducing the gap between the two and preventing leakage. The connection method between the drain assembly 5 and the second pipe assembly 6 is the same as the connection method between the liquid inlet assembly 3 and the first pipe assembly 4.

[0047] 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.

[0048] 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 reciprocating high-pressure pump head sealing structure, characterized in that: Includes a mounting plate (1); a high-pressure pump (2) is fixedly connected to the top surface of the mounting plate (1), an inlet assembly (3) is installed at the inlet end of the high-pressure pump (2), a first pipeline assembly (4) is connected to one end of the inlet assembly (3), a drain assembly (5) is installed at the outlet end of the high-pressure pump (2), and a second pipeline assembly (6) is connected to one end of the drain assembly (5). The liquid inlet assembly (3) includes a liquid inlet pipe (31). The liquid inlet end of the high-pressure pump (2) is fixedly connected to the liquid inlet pipe (31). One end of the liquid inlet pipe (31) is fixedly connected to a flange (32). A circular hole (33) is arranged in a circumferential array on one side of the flange (32). A matching slot (34) is provided in the middle of one side of the flange (32). A sealing groove (35) is provided on one side of the inner wall of the matching slot (34). An extension pipe (36) is fixedly connected to the inner wall of the flange (32). A connecting groove (37) is provided on the outer surface of the extension pipe (36) and between the inner wall of the flange (32). A docking component (38) is installed on the outer surface of the liquid inlet pipe (31). A sealing ring (39) is installed in the sealing groove (35).

2. The reciprocating high-pressure pump head sealing structure according to claim 1, characterized in that: The docking component (38) includes a ring plate (381), the outer surface of the liquid inlet pipe (31) is fixedly connected to the ring plate (381), and the circumferential surface of the ring plate (381) is fixedly connected to a connecting rod (382) at equal intervals, and one end of the connecting rod (382) is fixedly connected to a locking wedge (383).

3. The reciprocating high-pressure pump head sealing structure according to claim 2, characterized in that: The sealing ring (39) includes a ring cylinder (391), the ring cylinder (391) is installed in the sealing groove (35), and a ring gasket (392) is fixedly connected to the middle of the inner wall of the ring cylinder (391). The drain assembly (5) adopts the same structure as the inlet assembly (3) and is installed symmetrically.

4. The reciprocating high-pressure pump head sealing structure according to claim 3, characterized in that: The first pipe assembly (4) includes a connecting pipe (41), one end of which is fixedly connected to a plug pipe (42), and an annular disc (43) is fixedly connected to the outer surface of the plug pipe (42). A plug rod (44) is arranged in a circular array on one side of the annular disc (43). One end of the plug rod (44) is inserted into a circular hole (33). A pair of plug tubes (45) is fixedly connected to the inner wall of the plug pipe (42). One end of the pair of plug tubes (45) is inserted into a connecting groove (37). An auxiliary locking component (46) is installed on the outer surface of the connecting pipe (41).

5. The reciprocating high-pressure pump head sealing structure according to claim 4, characterized in that: The first pipe assembly (4) also includes a stepped groove (47), one side of the insertion pipe (42) is fixedly connected to the stepped groove (47), the inner wall of the stepped groove (47) is circumferentially arrayed with reset damping rods (48), one end of the reset damping rods (48) is fixedly connected to a pressing plate (49), one side of the pressing plate (49) is in contact with one side of the ring gasket (392).

6. The reciprocating high-pressure pump head sealing structure according to claim 5, characterized in that: The auxiliary locking component (46) includes a ring (461), the outer surface of the connecting pipe (41) is fixedly connected to the ring (461), a torsion spring (462) is fixedly connected to one side of the ring (461), a nut (463) is fixedly connected to one end of the torsion spring (462), and auxiliary locking blocks (464) are arranged in a circumferential array on one side of the nut (463); the second pipe assembly (6) adopts the same structure as the first pipe assembly (4) and is installed symmetrically.

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