Sealing ring structure of plunger pump

Abstract

The utility model discloses a plunger pump sealing ring structure which is installed on a plunger pump and comprises a V-shaped combined sealing ring, a plurality of rubber sealing rings and a plurality of sealing rings, the V-shaped combined sealing ring is placed on the lowermost portion, the rubber sealing rings and the sealing rings are placed on the upper portion of the V-shaped combined sealing ring after being alternately stacked, and the sealing rings are placed on the uppermost portion. The V-shaped combined sealing ring sequentially comprises a lower sealing ring, a middle sealing ring and an upper sealing ring from bottom to top. The V-shaped combined sealing ring and the sealing ring are arranged, the V-shaped combined sealing ring powerfully fixes the plunger pump head not to deviate from the central axis, poor sealing performance and aggravated sealing ring abrasion caused by eccentricity of the plunger pump head are avoided, meanwhile, the sealing performance is further enhanced through the V-shaped lip structure, the sealing performance and the pressure maintaining effect are guaranteed, and the service life of the plunger pump is prolonged. And the service life of the rubber sealing ring is greatly prolonged, the production efficiency is greatly improved, and the production cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of plunger pump seals, in particular to a plunger pump seal ring structure. Background Art

[0002] Many plunger pumps are needed in the field of ceramic product manufacturing, mainly for slurry transportation, precise control and automated production, providing important technical support for the production of ceramic products. The sealing structure of the existing plunger pump is composed of several identical rubber sealing rings, such as the attached Figure 6 As shown, this sealing structure has the following defects:

[0003] 1. The rubber sealing ring is easily squeezed, deformed, worn and failed, resulting in the plunger pump leaking slurry, failing to maintain pressure, and having low efficiency. It not only wastes slurry, but also affects environmental hygiene and increases sewage treatment costs.

[0004] 2. The service life of rubber sealing rings is short. The entire set of rubber sealing rings needs to be replaced within less than a week of use, which is labor-consuming, time-consuming and material-consuming. Utility Model Content

[0005] The utility model aims to provide a plunger pump sealing ring structure to solve the technical problems raised in the background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A plunger pump sealing ring structure is installed on a plunger pump, comprising a V-shaped combined sealing ring, a plurality of rubber sealing rings and a plurality of sealing rings, wherein the V-shaped combined sealing ring is placed at the bottom, the rubber sealing ring and the sealing ring are alternately stacked and placed on the upper part of the V-shaped combined sealing ring so that the sealing ring is placed on the top, the V-shaped combined sealing ring comprises a lower sealing ring, a middle sealing ring and an upper sealing ring from bottom to top, a first V-shaped block is fixedly provided on the upper part of the lower sealing ring, a first V-shaped groove and a second V-shaped block are fixedly provided on the middle sealing ring, a second V-shaped groove is opened on the lower part of the upper sealing ring, the first V-shaped groove matches the first V-shaped block, and the second V-shaped groove matches the second V-shaped block.

[0008] Furthermore, the outer diameters and inner diameters of the lower sealing ring, the middle sealing ring and the upper sealing ring match each other.

[0009] Furthermore, the outer diameters and inner diameters of the V-shaped combined sealing ring, the rubber sealing ring, and the sealing ring match each other.

[0010] Furthermore, the V-shaped combined sealing ring is made of cloth-reinforced rubber material.

[0011] Furthermore, the sealing ring is made of engineering plastics.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model discloses to be used for sealing the rubber sealing ring, and the ... BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional cross-sectional view of the structure of the utility model;

[0015] Figure 2 This is a cross-sectional view of the structure of the utility model;

[0016] Figure 3 is a cross-sectional view of the lower sealing ring;

[0017] Figure 4 It is a cross-sectional view of the middle sealing ring;

[0018] Figure 5 is a cross-sectional view of the upper sealing ring;

[0019] Figure 6 It is a schematic diagram of the sealing structure of a plunger pump in the prior art;

[0020] In the figure:

[0021] 1-lower sealing ring, 101-first V-shaped block, 2-middle sealing ring, 201-first V-shaped groove, 202-second V-shaped block, 3-upper sealing ring, 301-second V-shaped groove, 4-rubber sealing ring, 5-sealing ring. DETAILED DESCRIPTION

[0022] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] See also Figure 1-Figure 5 , an embodiment provided by the utility model:

[0024] A plunger pump sealing ring structure is installed on the plunger pump, including a V-shaped combined sealing ring, a plurality of rubber sealing rings 4 and a plurality of sealing rings 5. In this embodiment, there are two rubber sealing rings 4 and two sealing rings 5. The V-shaped combined sealing ring is placed at the bottom. The rubber sealing ring 4 and the sealing ring 5 are alternately stacked and placed on the upper part of the V-shaped combined sealing ring, and the sealing ring 5 is placed on the top. The V-shaped combined sealing ring includes a lower sealing ring 1, a middle sealing ring 2 and an upper sealing ring 3 from bottom to top. The upper part of the lower sealing ring 1 is fixedly provided with a first V-shaped block 101, the middle sealing ring 2 is fixedly provided with a first V-shaped groove 201 and a second V-shaped block 202, and the lower part of the upper sealing ring 3 is provided with a second V-shaped groove 301, and the first V-groove 201 matches the first V-shaped block 101. The second V-shaped groove 301 matches the second V-shaped block 202. When the first V-shaped block 101 is placed in the first V-shaped groove 201 and the second V-shaped block 202 is placed in the second V-shaped groove 301, the lower sealing ring 1, the middle sealing ring 2 and the upper sealing ring 3 form a complete V-shaped combined sealing ring. The V-shaped combined sealing ring can strongly fix the plunger pump head so that it does not deviate from the central axis, avoiding poor sealing performance and aggravated wear of the sealing ring due to eccentricity of the plunger pump head. At the same time, the middle sealing ring 2 has a better sealing performance due to its V-shaped lip structure. The sealing ring 5 is used to seal the rubber sealing ring 4, protect the rubber sealing ring 4, and ensure that the axial force of the rubber sealing ring 4 is uniform, so as to prevent the wear of the rubber sealing ring 4 from being aggravated due to uneven axial force.

[0025] Among them, the outer diameters and inner diameters of the lower sealing ring 1, the middle sealing ring 2, and the upper sealing ring 3 match each other.

[0026] Among them, the outer diameters and inner diameters of the V-shaped combined sealing ring, the rubber sealing ring 4 and the sealing ring 5 match each other.

[0027] Among them, the V-shaped combined sealing ring is made of cloth-reinforced rubber material, which is water-resistant and wear-resistant.

[0028] Wherein, the sealing ring 5 is made of engineering plastic material.

[0029] Comparative Example:

[0030] The sealing structure of the existing plunger pump is composed of a plurality of identical rubber sealing rings 4, as shown in the attached Figure 6 As shown, this sealing structure has the following defects:

[0031] 1. The rubber sealing ring is easily squeezed, deformed, worn and failed, resulting in the plunger pump leaking slurry, failing to maintain pressure, and having low efficiency. It not only wastes slurry, but also affects environmental hygiene and increases sewage treatment costs.

[0032] 2. The service life of rubber seals is short. The entire set of rubber seals needs to be replaced within less than a week of use, which is time-consuming, labor-intensive and material-intensive. Rubber seals need to be replaced about 50 times a year, 10 pieces need to be replaced at a time, each piece costs 14 yuan, and the cost of a single part costs 7,000 yuan a year. Each replacement and maintenance takes 2 hours and costs 100 yuan, and the annual maintenance cost is 10,000 yuan.

[0033] The utility model provides a V-shaped combined sealing ring and a sealing ring 5. The V-shaped combined sealing ring strongly fixes the plunger pump head so that it does not deviate from the central axis, thereby avoiding poor sealing performance and aggravated wear of the sealing ring due to the eccentricity of the plunger pump head. At the same time, the V-shaped lip structure is used to further enhance the sealing performance. The sealing ring 5 is used to seal the rubber sealing ring 4, and while protecting the rubber sealing ring 4, it ensures that the axial force of the rubber sealing ring 4 is uniform, thereby preventing the aggravated wear of the rubber sealing ring 4 due to uneven axial force, thereby ensuring the sealing performance and pressure-maintaining effect. The service life of the rubber sealing ring 4 is extended to about six months to one year, which greatly extends the service life and greatly improves the production efficiency. According to statistics, taking into account the saved maintenance costs and sewage treatment fees for leakage treatment, each plunger pump can save at least about 20,000 yuan per year.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plunger pump sealing ring structure, installed on a plunger pump, characterized in that: The invention comprises a V-shaped combined sealing ring, a plurality of rubber sealing rings (4) and a plurality of sealing rings (5), wherein the V-shaped combined sealing ring is placed at the bottom, and the rubber sealing rings (4) and the sealing rings (5) are alternately stacked and placed on the top of the V-shaped combined sealing ring, with the sealing ring (5) being placed on the top. The V-shaped combined sealing ring comprises, from bottom to top, a lower sealing ring (1), a middle sealing ring (2) and an upper sealing ring (3), wherein a first V-shaped block (101) is fixedly arranged on the top of the lower sealing ring (1), a first V-shaped groove (201) and a second V-shaped block (202) are fixedly arranged on the middle sealing ring (2), and a second V-shaped groove (301) is opened on the bottom of the upper sealing ring (3), wherein the first V-shaped groove (201) matches the first V-shaped block (101), and the second V-shaped groove (301) matches the second V-shaped block (202).

2. A plunger pump sealing ring structure according to claim 1, characterized in that: The outer diameters and inner diameters of the lower sealing ring (1), the middle sealing ring (2) and the upper sealing ring (3) match each other.

3. A plunger pump sealing ring structure according to claim 1, characterized in that: The outer diameters and inner diameters of the V-shaped combined sealing ring, the rubber sealing ring (4) and the sealing ring (5) match each other.

4. A plunger pump sealing ring structure according to claim 1, characterized in that: The V-shaped combined sealing ring is made of cloth-reinforced rubber.

5. The plunger pump sealing ring structure according to claim 1, characterized in that: The sealing ring (5) is made of engineering plastic material.

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