Automatic compensation sealing abrasion gap structure of high-pressure water plunger pump

Abstract

The utility model discloses an automatic compensation sealing abrasion clearance structure of a high-pressure water plunger pump, which comprises a plunger cylinder body, a plunger is arranged in the plunger cylinder body, a cylinder cover is arranged at one end of the plunger cylinder body, a sealing filler attached to the plunger and a filler pressing ring are arranged on the inner wall of the plunger cylinder body, and a sealing gasket is arranged on the inner wall of the plunger cylinder body. The plunger cylinder is characterized in that a metal sleeve is installed on the inner wall of the plunger cylinder body, the two ends of the sealing filler are attached to the filler pressing ring and the metal sleeve, and a carry spring is connected between the metal sleeve and the abutting ring. According to the utility model, double guarantee mechanisms of mechanical elastic compensation and hydraulic linkage conduction are integrated, when the sealing filler is abraded due to long-term work, the system can automatically trigger a compensation program, the carry spring immediately releases pretightening force to push the metal sleeve to displace and accurately compensate the abrasion clearance, meanwhile, the hydraulic conduction system synchronously responds, the strengthening rod is used for abutting against the abutting block, and the sealing filler can be quickly and accurately compensated. Therefore, the spring cannot be reset, and an unbreakable sealing guarantee is formed.

Description

TECHNICAL FIELD

[0001] The utility model relates to plunger pump design technical field especially relates to a high pressure water plunger pump automatic compensation sealing wear gap structure. BACKGROUND

[0002] As the core equipment of fluid power system, the sealing performance of high pressure water plunger pump directly influences the working efficiency and service life of equipment, in the field such as oil exploitation, industrial cleaning, hydraulic cutting, plunger pump usually needs to work continuously under the superhigh pressure working condition of 200-400MPa, which puts forward very high requirement to the sealing system, but in general design, the traditional sealing structure has the technical bottleneck such as irreversible wear and tear, compensation lag, leading to the problems such as the increase of leakage, frequent maintenance of equipment in long-term operation.

[0003] Therefore, the applicant proposes a high pressure water plunger pump automatic compensation sealing wear gap structure to solve the problem. UTILITY MODEL CONTENTS

[0004] The utility model provides a high pressure water plunger pump automatic compensation sealing wear gap structure, solve the problem raised in above -mentioned background.

[0005] In order to solve the above technical problem, the utility model provides a high pressure water plunger pump automatic compensation sealing wear gap structure, including plunger cylinder, the inside installation of plunger cylinder has the sealing packing of plunger adhesion, and the packing pressure ring is installed to the inner wall of plunger cylinder, the inner wall of plunger cylinder is installed metal cover, and the both ends of sealing packing are adhesion with packing pressure ring and metal cover, and the metal cover is connected with the carry -in spring between the ring, and the ring is adhesion with cylinder cover, the outer wall of metal cover is equipped with protruding ring a, one row telescopic rod is fixed to the outer wall of protruding ring a, the telescopic rod is inserted from one side sealing sleeve, and there is hydraulic liquid in the inside sealing sleeve;

[0006] The sealing sleeve is connected with the reinforcing assembly of plunger cylinder, for reinforcing the metal cover after compensation sealing.

[0007] Preferably, the reinforcing assembly includes an extension pipe mounted on the outer wall of the sealing sleeve, and a U-shaped plate fixed on the outer wall of the plunger cylinder, the extension pipe is in communication with the sealing sleeve and the pipe opening is in contact with the inner wall of the plunger cylinder, and the pipe opening of the extension pipe is slidingly installed with a stopper.

[0008] Preferably, the U-shaped plate is rotatably installed with a lead screw on the outer wall of the plunger cylinder, the lead screw is threadedly connected with a guide block, one side of the guide block is fixed with a moving block, the moving block slides in the inner side of the U-shaped plate, the bottom of the moving block is fixed with a reinforcing rod, the reinforcing rod passes through the hole on one side of the plunger cylinder to form a sealing sliding contact, and the reinforcing rod is in contact with the stopper.

[0009] Preferably, the abutting block is fixed with a limiting ring on both sides, and the limiting ring moves up and down in the annular notch inside the extension pipe.

[0010] Preferably, the abutting ring is annularly provided with a row of positioning rods on one side, and the positioning rods are inserted into corresponding rod holes of the cylinder cover.

[0011] Preferably, a threaded ring is threadedly connected to the lead screw, and the limiting ring can be attached to one end of the guide block.

[0012] Compared with the related art, the high-pressure water plunger pump automatic compensation sealing wear gap structure has the following beneficial effects:

[0013] The utility model fuses mechanical elastic compensation, hydraulic linkage conduction double guarantee mechanism, when sealing filler produces wear because of long-term work, system can automatically trigger compensation procedure, and carry in spring releases pre-tightening force and promotes metal cover displacement in time, and accurate compensation wear gap is formed, and simultaneously hydraulic conduction system synchronous response, and with reinforcement rod resist against abutting block, so that spring cannot reset, form unbreakable sealing guarantee. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is whole three-dimensional structure schematic diagram of the utility model;

[0015] Figure 2 It is whole three-dimensional structure schematic diagram of the utility model; Figure 1 It is enlarged structure schematic diagram of A place in the middle;

[0016] Figure 3 It is reinforcement assembly structure schematic diagram of the utility model;

[0017] Figure 4 It is abutting block three-dimensional structure schematic diagram of the utility model.

[0018] Marked number in drawing: 1, plunger cylinder body;11, plunger;12, cylinder cover;13, metal cover;14, filler pressing ring;15, sealing filler;16, carry-in spring;17, abutting ring;18, sealing sleeve;19, telescopic rod;110, positioning rod;2, reinforcement assembly;21, extension pipe;22, U-shaped plate;23, abutting block;231, limiting ring;24, lead screw;25, guide block;26, moving block;27, reinforcement rod;28, threaded ring. DETAILED DESCRIPTION

[0019] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments; based on the embodiments in the present application, all the other embodiments obtained by the person of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0020] By Figures 1-4 The utility model provides a high pressure water plunger pump automatic compensation sealing wear gap structure, including plunger cylinder body 1, the inside installation of plunger cylinder body 1 has plunger 11, plunger cylinder body 1 one end is installed with cylinder cover 12, plunger cylinder body 1 inner wall is installed with the sealing packing 15 that plunger 11 is pasted, and packing ring 14, plunger cylinder body 1 inner wall is installed with metal sleeve 13, and sealing packing 15 both ends are pasted with packing ring 14 and metal sleeve 13, and the metal sleeve 13 is connected with carry spring 16 between the ring 17, and the ring 17 is pasted with cylinder cover 12, and the metal sleeve 13 outer wall is equipped with protruding ring a, and protruding ring a outer wall is fixed with a row of telescopic rod 19, and telescopic rod 19 is inserted from one side sealing sleeve 18, and the inside of sealing sleeve 18 has hydraulic liquid, and sealing sleeve 18 is connected with the metal sleeve 13 of plunger cylinder body 1 with the reinforcement assembly 2 for the metal sleeve 13 after compensation sealing is reinforced and is positioned.

[0021] The reinforcement assembly 2 includes an extension pipe 21 mounted on the outer wall of the sealing sleeve 18 and a U-shaped plate 22 fixed on the outer wall of the plunger cylinder body 1. The extension pipe 21 is in communication with the sealing sleeve 18 and the pipe opening is pasted with the inner wall of the plunger cylinder body 1. The extension pipe 21 pipe opening is slidingly installed with a stop block 23. The U-shaped plate 22 is rotationally installed with a lead screw 24 on the outer wall of the plunger cylinder body 1. The lead screw 24 is threadedly connected with a guide block 25. The guide block 25 is fixed with a moving block 26 on one side. The moving block 26 slides on the inner side of the U-shaped plate 22. The moving block 26 is fixed with a reinforcement rod 27 at the bottom. The reinforcement rod 27 passes through the hole of the plunger cylinder body 1 to form a sealed sliding. The reinforcement rod 27 is in contact with the stop block 23.

[0022] Through the above structural design, during assembly, the operator first inserts the positioning rod 110 into the corresponding positioning hole of the cylinder cover 12 to ensure the accuracy of the assembly, and then inserts the metal sleeve 13 into the inner wall of the plunger cylinder 1 under the guidance of the metal sleeve 13 to form a precise fit with the plunger 11. At this time, the sealing filler 15 is in the best pre-tightening state under the bidirectional clamping of the packing ring 14 and the metal sleeve 13, and the carry-in spring 16 is compressed to store elastic potential energy for subsequent automatic compensation. With the completion of assembly, the telescopic rod 19 moves towards the inside of the sealing sleeve 18 under the drive of the metal sleeve 13, pushes the hydraulic liquid to generate pressure conduction, and the hydraulic medium uniformly transmits the pressure to each abutting block 23, so that it accurately slides to the preset position in the extension pipe 21 and forms initial contact with the end of the reinforcing rod 27. The limiting ring 231 effectively prevents the abutting block 23 from coming out, ensuring the reliability of the system. When the sealing filler 15 is worn out due to long-term work, the carry-in spring 16 releases the pre-tightening force in time, pushes the metal sleeve 13 to move axially, compensates for the wear gap in real time, and the telescopic rod 19 moves out synchronously. The abutting block 23 is driven back by the hydraulic system, the operator rotates the screw rod 24, and the reinforcing rod 27 moves forward through the precise thread transmission, re-establishes rigid contact, and tightens the limiting ring 28 to form double locking, ensuring that the compensation position is fixed.

[0023] The limiting ring 231 is fixed on both sides of the abutting block 23 and moves up and down in the annular notch inside the extension pipe 21. The abutting ring 17 is annularly arranged with a row of positioning rods 110 on one side, and the positioning rods 110 are inserted into the corresponding rod holes of the cylinder cover 12. The screw ring 28 is threadedly connected to the screw rod 24, and the screw ring 28 can be in contact with one end of the guide block 25. The guide block 25 is made of metal material and has a small gap with the plunger 11.

[0024] Through the above structural design, the positioning rod 110 is convenient to position, and after the abutting ring 17 and the metal sleeve 13 are inserted, each extension pipe 21 corresponds to the position of the reinforcing rod 27, and the screw ring 28 moves the reinforcing rod 27 inside the extension pipe 21 under the drive of the guide block 25. After the reinforcing limiting is completed, rotating the screw ring 28 makes it contact with the guide block 25 so that it cannot move back, further enhancing stability.

[0025] Working principle: when the device is used, the positioning rod 110 is inserted into the corresponding rod hole of the cylinder cover 12, and the cylinder cover 12 is installed at one end of the plunger cylinder body 1, at this time, the metal sleeve 13 is embedded in the inner wall of the plunger cylinder body 1, located at the outer edge of the plunger 11, and at this time, the both ends of the sealing filler 15 are tightly attached to the metal sleeve 13 and the filler pressing ring 14, and at the same time, the increment spring 16 is compressed, the telescopic rod 19 moves from one side of the sealing sleeve 18 to the inside of it, so that the hydraulic liquid pushes the abutment block 23, the abutment block 23 slides in the extension pipe 21, at this time, the outer wall of the abutment block 23 is aligned with the pipe opening of the extension pipe 21, but it cannot be separated through the limiting ring 231, at this time, the abutment block 23 is attached to the inner end of the reinforcing rod 27, when the gap is caused after the filler is worn, the increment spring 16 pushes the metal sleeve 13 to move and extrude the sealing filler 15, so that the gap is compressed, the sealing effect is strengthened, and at this time, the telescopic rod 19 moves from one side of the sealing sleeve 18 to the outside of it, the abutment block 23 moves back, at this time, the lead screw 24 can be rotated to displace the guide block 25, so that the reinforcing rod 27 moves to the inside of the extension pipe 21 and recontacts the abutment block 23, so that the abutment block 23 cannot move back, the metal sleeve 13 is compressed by using the hydraulic principle, and the threaded ring 28 is then tightened and fixed, so that the stability is better, and the compensation effect is reduced due to the damage of the increment spring 16 over time, it should be noted that the staff can rotate the lead screw 24 every certain period of time, the outer side of the U-shaped plate 22 is provided with a knob for driving the rotation of the lead screw 24, and the outside of the plunger pump can be equipped with a shell in the prior art, and the driving parts such as the lead screw 24 and the guide block 25 are covered in the inside.

[0026] It should be noted that, in the present document, the terms such as first and second, etc. are merely used 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. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0027] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-pressure water plunger pump automatic compensation structure for sealing wear gap, comprising a plunger cylinder body (1), wherein a plunger (11) is installed inside the plunger cylinder body (1), a cylinder head (12) is installed at one end of the plunger cylinder body (1), and a sealing packing (15) that fits against the plunger (11) and a packing pressure ring (14) are installed on the inner wall of the plunger cylinder body (1), characterized in that: The metal sleeve (13) is installed on the inner wall of the plunger cylinder (1), the sealing filler (15) is in contact with the filler pressing ring (14) and the metal sleeve (13) at both ends, the metal sleeve (13) is connected with the carryover spring (16) between the abutting ring (17), the abutting ring (17) is in contact with the cylinder cover (12), the outer wall of the metal sleeve (13) is provided with a protruding ring a, a row of telescopic rods (19) are fixed on the outer wall of the protruding ring a, the telescopic rods (19) are sealedly inserted from one side of the sealing sleeve (18), and the sealing sleeve (18) is filled with hydraulic liquid; The sealing sleeve (18) is connected with the plunger cylinder (1) with a reinforcing assembly (2) for reinforcing and limiting the metal sleeve (13) after compensation sealing.

2. The automatic compensation for sealing wear gap structure of a high-pressure water plunger pump according to claim 1, characterized in that, The reinforcing assembly (2) comprises an extension pipe (21) installed on the outer wall of the sealing sleeve (18) and a U-shaped plate (22) fixed on the outer wall of the plunger cylinder (1), the extension pipe (21) is in communication with the sealing sleeve (18) and the pipe opening is in contact with the inner wall of the plunger cylinder (1), and the extension pipe (21) is slidably installed with an abutting block (23) at the pipe opening.

3. The automatic compensation for sealing wear gap structure of a high-pressure water plunger pump according to claim 2, characterized in that, The U-shaped plate (22) is rotatably installed with a lead screw (24) on the outer wall of the plunger cylinder (1), the lead screw (24) is threadedly connected with a guide block (25), one side of the guide block (25) is fixedly connected with a moving block (26), the moving block (26) slides on the inner side of the U-shaped plate (22), and the moving block (26) is fixedly connected with a reinforcing rod (27) at the bottom, the reinforcing rod (27) penetrates into the plunger cylinder (1) from the hole on one side to form a sealing sliding, and the reinforcing rod (27) is in contact with the abutting block (23).

4. The automatic compensation for sealing wear gap structure of a high-pressure water plunger pump according to claim 3, characterized in that, The abutting block (23) is fixedly connected with a limiting ring (231) on both sides, and the limiting ring (231) moves up and down in the annular notch on the inner side of the extension pipe (21).

5. The automatic compensation for sealing wear gap structure of a high-pressure water plunger pump according to claim 4, characterized in that, The abutting ring (17) is annularly provided with a row of positioning rods (110) on one side, and the positioning rods (110) are inserted into the corresponding rod holes of the cylinder cover (12).

6. The automatic compensation for sealing wear gap structure of a high-pressure water plunger pump according to claim 5, characterized in that, The lead screw (24) is threadedly connected with a threaded ring (28), and the threaded ring (28) can be in contact with one end of the guide block (25).

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