Plunger pump sealing device and plunger pump

Abstract

The utility model discloses a plunger pump sealing device and a plunger pump, and relates to the technical field of plunger pumps, the plunger pump sealing device comprises a plunger pump body, the rear side of the plunger pump body is provided with a driving part, both sides of the plunger pump body are provided with oil inlets, and the front end of the plunger pump body is provided with a rotating shaft; a cover plate is arranged on the outer side of the rotating shaft, a sealing ring is arranged on the inner side of the cover plate and arranged on the outer side of the rotating shaft, and a connecting plate is fixedly connected to one side of the sealing ring; a clamping ring is arranged on the rear side of the cover plate, and a limiting groove is formed in the inner side of the clamping ring. The cover plate is arranged on the outer side of the rotating shaft, the sealing ring is arranged on the outer side of the rotating shaft, the clamping ring is arranged on the rear side of the cover plate, the limiting groove is formed in the inner side of the clamping ring, the connecting plate is fixedly connected to the rear side of the sealing ring, and the connecting plate and the limiting groove are arranged correspondingly, so that the connecting plate can be clamped and fixed conveniently; and meanwhile, the cover plate is detached, so that the sealing ring is convenient to replace.

Description

Technical Field

[0001] This utility model relates to the field of plunger pump technology, and in particular to a plunger pump sealing device and a plunger pump. Background Technology

[0002] A piston pump is an important component of a hydraulic system. It relies on the reciprocating motion of a piston within a cylinder to change the volume of a sealed working chamber, thus achieving oil suction and pressure. Also known as a piston pump or reciprocating pump, the piston pump uses a piston rod that reciprocates within the cylinder to create a pressure difference, thereby inputting fluid. When the piston moves inward, the chamber volume decreases, and liquid is pushed out of the pump body; when the piston moves outward, the chamber volume increases, drawing liquid into the pump body. By continuously repeating this reciprocating motion, the piston pump can continuously deliver liquid.

[0003] When existing plunger pumps are in use, the plunger needs to reciprocate within the cylinder. After prolonged use, the gasket between the plunger and the external seal often wears down, leading to oil leakage and causing problems with the operation of the plunger pump. Furthermore, existing plunger pumps are not easy to disassemble, making it difficult to replace the gasket, which reduces the plunger pump's sealing performance and affects its use.

[0004] Therefore, it is necessary to invent a plunger pump sealing device and a plunger pump to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a plunger pump sealing device and a plunger pump. A cover plate is provided on the outer side of the rotating shaft, and a sealing ring is provided on the outer side of the rotating shaft. A snap-fit ​​ring is provided on the rear side of the cover plate, and a limiting groove is provided on the inner side of the snap-fit ​​ring. A connecting plate is fixedly connected to the rear side of the sealing ring, and the connecting plate and the limiting groove are correspondingly arranged, thereby facilitating the snap-fit ​​fixing of the connecting plate. Simultaneously, the cover plate can be removed for easy replacement of the sealing ring. This solves the problem mentioned in the background art where, during the use of existing plunger pumps, the plunger needs to reciprocate within the cylinder. After prolonged use, the gasket between the plunger and the external sealing gasket often wears down, leading to oil leakage and malfunction of the plunger pump. Furthermore, existing plunger pumps are inconvenient to disassemble, making gasket replacement difficult, resulting in reduced pump sealing and affecting the pump's performance.

[0006] According to one aspect of this disclosure, the following technical solution is provided: a plunger pump sealing device and a plunger pump, including a plunger pump body, a drive unit is provided on the rear side of the plunger pump body, oil inlets are provided on both sides of the plunger pump body, and a rotating shaft is provided at the front end of the plunger pump body.

[0007] A cover plate is provided on the outer side of the rotating shaft, and a sealing ring is provided on the inner side of the cover plate. The sealing ring is located on the outer side of the rotating shaft, and a connecting plate is fixedly connected to one side of the sealing ring.

[0008] A snap-fit ​​ring is provided on the rear side of the cover plate, and a limiting groove is provided on the inner side of the snap-fit ​​ring. The limiting groove is provided in correspondence with the connecting plate.

[0009] According to at least one embodiment of the present disclosure, a plunger pump sealing device and a plunger pump are provided at the front end of the plunger pump body, a fixing plate is provided at the front end of the plunger pump body, a plurality of first fastening bolts are evenly provided on the side of the fixing plate, the fixing plate is fixedly connected to the outside of the plunger pump body by the first fastening bolts, and a connecting ring is fixedly connected to the front end of the fixing plate.

[0010] According to at least one embodiment of the present disclosure, a plunger pump sealing device and a plunger pump are provided, wherein a fixing ring is provided at the front end of the connecting ring, an external thread is provided on the outer side of the fixing ring, and a collar is connected to the outer thread of the fixing ring.

[0011] According to at least one embodiment of the present disclosure, a plunger pump sealing device and a plunger pump are provided, wherein each of the four corners of the collar is provided with a first through hole, the front side of the collar is provided with a retaining groove, the retaining groove and the retaining ring are correspondingly provided, and the retaining ring is provided inside the retaining groove.

[0012] According to at least one embodiment of the present disclosure, a plunger pump sealing device and a plunger pump are provided, wherein each of the four corners of the cover plate is provided with a second through hole, the second through hole is provided with a first through hole corresponding to each other, a second fastening bolt is provided on the inner side of the second through hole, and the cover plate is fixedly connected to the outer side of the collar by the second fastening bolt.

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

[0014] (1) This utility model has a cover plate on the outside of the rotating shaft, a sealing ring on the outside of the rotating shaft, a snap ring on the back of the cover plate, a limit groove on the inside of the snap ring, and a connecting plate fixedly connected to the back of the sealing ring. The connecting plate and the limit groove are arranged correspondingly to each other, so as to facilitate the snap-fit ​​and fixation of the connecting plate. At the same time, the cover plate can be removed to facilitate the replacement of the sealing ring. Attached Figure Description

[0015] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0016] Figure 1This is a schematic diagram of the overall structure of a plunger pump sealing device and a plunger pump according to one embodiment of the present disclosure.

[0017] Figure 2 This is a schematic diagram of the disassembled structure of a plunger pump sealing device and a connecting ring and collar in a plunger pump according to one embodiment of the present disclosure.

[0018] Figure 3 This is a schematic diagram of the main structure of a plunger pump sealing device and a plunger pump cover plate according to one embodiment of the present disclosure.

[0019] Figure 4 This is a schematic diagram of the main structure of a plunger pump sealing device and a sealing ring in a plunger pump according to one embodiment of the present disclosure.

[0020] The specific labels in the attached figures are as follows:

[0021] 1. Plunger pump body; 11. Drive unit; 12. Oil inlet; 13. Rotary shaft;

[0022] 2. Fixing plate;

[0023] 3. First fastening bolt; 31. Connecting ring; 32. Retaining ring; 321. External thread;

[0024] 4. Collar; 41. First through hole; 42. Slot;

[0025] 5. Sealing ring; 51. Connecting plate;

[0026] 6. Cover plate; 61. Second through hole; 62. Snap-fit ​​ring; 621. Limiting groove;

[0027] 7. Second fastening bolt. Detailed Implementation

[0028] like Figures 1-4 As shown, a plunger pump sealing device and a plunger pump disclosed herein may include a plunger pump body 1, a drive unit 11 is provided on the rear side of the plunger pump body 1, oil inlets 12 are provided on both sides of the plunger pump body 1, and a rotating shaft 13 is provided at the front end of the plunger pump body 1.

[0029] A cover plate 6 is provided on the outer side of the rotating shaft 13, and a sealing ring 5 is provided on the inner side of the cover plate 6. The sealing ring 5 is located on the outer side of the rotating shaft 13, and a connecting plate 51 is fixedly connected to one side of the sealing ring 5.

[0030] A snap ring 62 is provided on the rear side of the cover plate 6, and a limiting groove 621 is provided on the inner side of the snap ring 62. The limiting groove 621 is provided in correspondence with the connecting plate 51.

[0031] Therefore, by providing a cover plate 6 on the outside of the rotating shaft 13, a sealing ring 5 on the outside of the rotating shaft 13, a snap-fit ​​ring 62 on the rear side of the cover plate 6, a limiting groove 621 on the inner side of the snap-fit ​​ring 62, and a connecting plate 51 fixedly connected to the rear side of the sealing ring 5, the connecting plate 51 and the limiting groove 621 are correspondingly arranged, which facilitates the snap-fit ​​fixing of the connecting plate 51, and at the same time, the cover plate 6 can be removed to facilitate the replacement of the sealing ring 5.

[0032] like Figure 1 As shown, in a preferred embodiment, a fixing plate 2 is provided at the front end of the plunger pump body 1, and a plurality of first fastening bolts 3 are evenly provided on the side of the fixing plate 2. The fixing plate 2 is fixedly connected to the outside of the plunger pump body 1 by the first fastening bolts 3, and a connecting ring 31 is fixedly connected to the front end of the fixing plate 2.

[0033] Therefore, by setting the first fastening bolt 3, the fixing plate 2 can be fixedly connected to the outside of the plunger pump body 1 by the first fastening bolt 3.

[0034] like Figure 2 As shown in this disclosure, the front end of the connecting ring 31 is provided with a fixing ring 32, the outer side of the fixing ring 32 is provided with an external thread 321, and the outer thread of the fixing ring 32 is connected to a collar 4.

[0035] Therefore, by providing a fixing ring 32 at the front end of the connecting ring 31, and providing an external thread 321 on the outer side of the fixing ring 32, and connecting the outer thread of the fixing ring 32 to the collar 4, the collar 4 is effectively threadedly fixed to the outer side of the fixing ring 32, thereby effectively fixing the collar 4.

[0036] like Figure 2 and Figure 3 As shown, in a preferred embodiment, each of the four corners of the collar 4 is provided with a first through hole 41, and the front side of the collar 4 is provided with a slot 42. The slot 42 and the snap ring 62 are provided corresponding to each other, and the snap ring 62 is provided inside the slot 42.

[0037] Therefore, by setting the slot 42, which is correspondingly set with the snap ring 62, the snap ring 62 can be set inside the slot 42, effectively hiding the snap ring 62, so that the collar 4 and the cover plate 6 can be closer together.

[0038] like Figure 2 and Figure 3 As shown in this disclosure, each of the four corners of the cover plate 6 is provided with a second through hole 61, which is provided in correspondence with the first through hole 41. A second fastening bolt 7 is provided on the inner side of the second through hole 61, and the cover plate 6 is fixedly connected to the outer side of the collar 4 by the second fastening bolt 7.

[0039] Therefore, by providing second through holes 61 at each of the four corners of the cover plate 6, with the second through holes 61 corresponding to the first through holes 41, the cover plate 6 can be fixedly connected to the outside of the collar 4 by the second fastening bolts 7. At the same time, it is convenient to disassemble the cover plate 6 from the outside of the collar 4 and remove the cover plate 6 from the outside of the rotating shaft 13, which facilitates the disassembly and replacement of the connecting plate 51 located on the rear side of the cover plate 6, thereby improving the efficiency of replacing the sealing ring 5.

[0040] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. A plunger pump sealing device and a plunger pump, comprising a plunger pump body (1), a drive unit (11) is provided on the rear side of the plunger pump body (1), oil inlets (12) are provided on both sides of the plunger pump body (1), and a rotating shaft (13) is provided at the front end of the plunger pump body (1). Its features are, A cover plate (6) is provided on the outer side of the rotating shaft (13), and a sealing ring (5) is provided on the inner side of the cover plate (6). The sealing ring (5) is located on the outer side of the rotating shaft (13), and a connecting plate (51) is fixedly connected to one side of the sealing ring (5). A snap ring (62) is provided on the rear side of the cover plate (6), and a limiting groove (621) is provided on the inner side of the snap ring (62). The limiting groove (621) is provided in correspondence with the connecting plate (51).

2. The plunger pump sealing device and plunger pump according to claim 1, characterized in that: The front end of the plunger pump body (1) is provided with a fixing plate (2), and a plurality of first fastening bolts (3) are evenly arranged on the side of the fixing plate (2). The fixing plate (2) is fixedly connected to the outside of the plunger pump body (1) by the first fastening bolts (3). A connecting ring (31) is fixedly connected to the front end of the fixing plate (2).

3. The plunger pump sealing device and plunger pump according to claim 2, characterized in that: The front end of the connecting ring (31) is provided with a fixing ring (32), the outer side of the fixing ring (32) is provided with an external thread (321), and the outer thread of the fixing ring (32) is connected to a collar (4).

4. A plunger pump sealing device and a plunger pump according to claim 3, characterized in that: The collar (4) has a first through hole (41) at each of its four corners. The collar (4) has a slot (42) on its front side. The slot (42) and the snap ring (62) are arranged corresponding to each other. The snap ring (62) is located inside the slot (42).

5. A plunger pump sealing device and a plunger pump according to claim 4, characterized in that: The cover plate (6) is provided with a second through hole (61) at each of its four corners. The second through hole (61) is provided with a first through hole (41) corresponding to each other. A second fastening bolt (7) is provided on the inner side of the second through hole (61). The cover plate (6) is fixedly connected to the outer side of the collar (4) by the second fastening bolt (7).

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