Filler pressing device capable of adjusting and stabilizing pressure

By using a plunger pusher and cavity structure to push the packing gland with a fluid medium, the problem of weakened spring force caused by packing wear is solved, achieving stable packing pre-tightening and improving the sealing performance and service life of the equipment.

CN224033080UActive Publication Date: 2026-03-24KUNSHAN DINGJI PRECISION MASCH TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-14
Publication Date
2026-03-24

AI Technical Summary

Technical Problem

In existing packing seals, packing wear weakens the spring force, resulting in the gland not being pressed tightly, causing media to easily leak out, and failing to provide a continuous and stable pre-tightening effect.

Method used

It adopts a plunger push rod and cavity structure, and uses the fluid medium to push the plunger push rod to push the packing gland. The pressure of the fluid medium is adjusted and maintained at a constant pressure to avoid the influence of the spring and achieve stable packing pre-tightening.

Benefits of technology

This achieves continuous and stable pre-tightening of the packing gland, improving the service life and sealing performance of the equipment, and avoiding media leakage caused by weakened spring force.

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Abstract

The utility model discloses a filler pressing device capable of adjusting and stabilizing pressure, which belongs to the technical field of filler pressing devices and comprises a base plate, a first fastener arranged on the base plate, a cavity arranged on the first fastener, a through hole arranged on the cavity, a plunger push rod arranged in the through hole and arranged on the inner side of the base plate. The packing gland is driven by the thrust of a fluid medium to move and press, so that the influence of elasticity is avoided, the service life is longer, and the packing gland is more stable.
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Description

Technical Field

[0001] This utility model relates to the technical field of packing clamping devices, specifically an adjustable and stabilizing packing clamping device. Background Technology

[0002] In packing seals, the packing gland needs to be pressed to achieve a pre-tightening effect. Existing technology usually uses bolts and springs to connect to the packing gland. The packing gland is tightened by the bolts and springs to pre-tighten the packing. During operation, it prevents the medium from leaking out, and the spring plays a compensating role. However, as the packing is used for a long time, the packing gradually wears down, and the spring force will gradually weaken, resulting in the gland not pressing the packing tightly, which easily leads to the medium leaking out. Utility Model Content

[0003] To address the technical problems mentioned in the background section, this utility model provides an adjustable and stabilizing packing compaction device, employing the following technical solution:

[0004] It includes a chassis, on which a first fastener is provided, on which a cavity is provided, on which a through hole is provided, and a plunger push rod is provided inside the through hole, with the plunger push rod located inside the chassis.

[0005] Furthermore, the cavity includes an upper cavity and a lower cavity, which are connected by a second fastener.

[0006] Furthermore, a shaft seal is provided on the left side of the chassis.

[0007] Furthermore, a chassis seal is provided on the right side of the chassis.

[0008] Furthermore, a seal is provided on the left side of the plunger rod.

[0009] This invention has the following advantages: the fluid medium pushes the plunger rod to push the packing gland, so that the packing gland is pressed tightly against the packing. The pressure of the fluid medium can be adjusted as needed, and the adjusted pressure is a constant pressure, which can ensure that the packing gland provides continuous and stable pre-tightening for the packing. This invention relies on the thrust of the fluid medium to drive the packing gland to move and tighten, avoiding the influence of elasticity, resulting in a longer service life and greater stability. Attached Figure Description

[0010] Figure 1 This is an exploded perspective view of the present invention;

[0011] Figure 2 This is a structural diagram of the present invention;

[0012] Figure 3 This is a schematic diagram illustrating the application of this utility model in various scenarios.

[0013] Attached figures: 1. Chassis, 2. First fastener, 3. Cavity, 4. Through hole, 5. Piston push rod, 6. Upper cavity, 7. Lower cavity, 8. Shaft seal, 9. Chassis seal, 10. Seal, 11. Second fastener. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please refer to Figure 1-3 This utility model discloses an adjustable and pressure-stabilizing packing compression device, including a chassis 1, a first fastener 2 on the chassis 1, and a cavity 3 on the first fastener 2. The chassis 1 and the cavity 3 are connected by the first fastener 2. The first fastener 2 is a fixing rod, connecting rod, etc. The cavity 3 is provided with a through hole 4, and a plunger push rod 5 is provided in the through hole 4. The plunger push rod 5 is movably disposed in the through hole 4 and is located inside the chassis 1. The fluid medium pushes the plunger push rod 5. The chassis 1 and the cavity 3 are fixed on a movable shaft. The plunger push rod 5 is connected to the packing gland.

[0016] The cavity 3 includes an upper cavity 6 and a lower cavity 7. The upper cavity 6 and the lower cavity 7 are connected by a second fastener 11, which is a bolt. The bolt connects the upper cavity 6 and the lower cavity 7, making it easy to disassemble the upper cavity 6 and the lower cavity 7.

[0017] A shaft seal 8 is provided on the left side of the chassis 1. The shaft seal is a sealing ring used for sealing the left side of the chassis 1.

[0018] A chassis seal 9 is provided on the right side of the chassis 1. The chassis seal 9 is a sealing ring used for sealing the right side of the chassis 1.

[0019] A seal 10 is provided on the left side of the plunger push rod 5. The seal 10 is a limiting plate. The fluid medium pushes the seal 10, and the seal 10 pushes the plunger push rod 5.

[0020] The working principle of this utility model is as follows: the sealing element 10 is pushed by the fluid medium, the sealing element 10 pushes the plunger push rod 5, and the plunger push rod 5 pushes the packing gland, so that the packing gland is pressed tightly against the packing. The pressure of the fluid medium can be adjusted as needed. The adjusted pressure is a constant pressure, which can ensure that the packing gland provides continuous and stable pre-tightening for the packing.

[0021] This invention is simple to operate, convenient to use, and suitable for widespread promotion and application. Although embodiments of this invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of this invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A packing compaction device with adjustable and stabilizing pressure, characterized in that, Includes a chassis (1), on which a first fastener (2) is provided, on which a cavity (3) is provided, on which a through hole (4) is provided, and a plunger push rod (5) is provided inside the through hole (4), and the plunger push rod (5) is located inside the chassis (1).

2. The adjustable and stabilizing packing compaction device according to claim 1, characterized in that, The cavity (3) includes an upper cavity (6) and a lower cavity (7), which are connected by a second fastener (11).

3. The adjustable and stabilizing packing compaction device according to claim 1, characterized in that, A shaft seal (8) is provided on the left side of the chassis (1).

4. The adjustable and stabilizing packing compaction device according to claim 1, characterized in that, A chassis seal (9) is provided on the right side of the chassis (1).

5. The adjustable and stabilizing packing compaction device according to claim 1, characterized in that, A seal (10) is provided on the left side of the plunger push rod (5).