A rotary comb filter for mechanical seals

Abstract

The present invention relates to a rotary comb filter for mechanical seals. The comb-shaped filtering component is installed on a rotating component or a stationary component. The comb-shaped filtering component is composed of a radial or circumferential comb-shaped fiber structure. The comb-shaped filtering component filters out sediment and solid particles in the medium conveyed by a marine centrifugal pump. A scraping component is also installed on the rotating component or the stationary component. The scraping component is composed of a scraping blade with pores or a scraping blade with comb-shaped fibers. The scraping component scrapes the comb-shaped fibers in the comb-shaped filtering component, removes the attached impurities and throws them out from the gaps to realize self-cleaning of the filter. The present invention filters through the comb-shaped fibers on the comb-shaped filtering component and scrapes through the scraping blades on the scraping component to filter the mechanical seal cooling water, which can effectively prevent impurity particles from entering the mechanical seal friction pair and causing rapid wear of the mechanical seal. Through the interaction between the scraping blade and the comb shape, self-cleaning of the filter is realized, and the problem of high operation and maintenance costs of traditional filters is solved.

Description

Technical Field

[0001] The invention relates to a rotary comb filter for mechanical sealing, in particular to a rotary comb filter for mechanical sealing with a self-cleaning function. Background Art

[0002] In order to extend the service life of mechanical seals, the most commonly used method is to install filters or vortex separators on the conveying pipeline. At present, the main problems with filters used in mechanical seals are as follows:

[0003] 1. The filter installed on the delivery pipeline is equipped with a static filter screen, which needs to be replaced and cleaned frequently. For marine pump equipment installed in a small space, replacement and maintenance are difficult and the maintenance cost is high.

[0004] 2. The cyclone separator relies on centrifugal action to remove large particles of impurities, but some larger impurity particles cannot be filtered out.

[0005] The reliability of mechanical seals largely determines the reliability of pump units. Numerous pump companies worldwide have studied the reliability of mechanical seals when pumps transport media containing impurities, employing methods such as anti-abrasion mechanical seal friction materials, external filters, and the addition of screens to pump unit inlet pipes. However, user feedback and years of application experience have shown that due to the complex installation and operating environments of marine pumps, these methods increase the frequency, difficulty, and cost of maintenance, ultimately reducing pump unit reliability and failing to fundamentally address the problem. Summary of the Invention

[0006] The present invention is to provide a rotary comb filter for mechanical seals with a self-cleaning function, the purpose of which is to achieve the filtering effect of a traditional filter while realizing the self-cleaning function of the filter, greatly saving the manpower and material costs required for maintenance, improving the blockage of the filter and the operating environment of the mechanical seal, thereby comprehensively improving the service life of the mechanical seal of pump equipment and reducing the operation and maintenance costs of pump equipment.

[0007] To achieve the above-mentioned object, the technical solution of the present invention is: a rotary comb filter for mechanical seal, having a comb-type filter component, wherein the comb-type filter component is installed on a rotating component or a stationary component, and the comb-type filter component is composed of a radial or circumferential comb-type fiber structure, and the comb-type filter component is used to filter the mud, sand, and solid particle impurities in the conveying medium of a marine centrifugal pump.

[0008] Furthermore, a scraper component is also installed on the rotating component or the stationary component. The scraper component is composed of a scraper with pores or a scraper with comb-type fibers. The scraper component scrapes the comb-type fibers in the comb-type filter component to remove attached impurities and throw them out from the gaps to achieve self-cleaning of the filter.

[0009] Further, the radial comb-shaped fiber structure is mounted on the rotor component and rotates with the shaft. The comb-shaped fibers in the radial comb-shaped fiber structure are a set of comb-shaped distributed fibers with a full-circle radial distribution and inclined ends, and the inclination angle on the comb-shaped fibers coincides with that of the housing.

[0010] Further, the comb-shaped fibers in the circumferential comb-shaped fiber structure are full-circle comb-shaped fibers with inclined ends distributed along the circumferential direction and rotate with the shaft.

[0011] Further, the comb-shaped fibers in the radial comb-shaped fiber structure are provided with rotary paddles or the rotary paddles are replaced with comb-shaped fibers, and the housing is provided with a set of comb-shaped fibers with a full-circle radial distribution and inclined ends.

[0012] Further, the comb-shaped fibers in the circumferential comb-shaped fiber structure are provided with rotary paddles or the rotary paddles are replaced with comb-shaped fibers, and the housing is provided with a full-circle set of comb-shaped fibers with inclined ends distributed along the circumferential direction.

[0013] The rotary comb-type filter for mechanical seal with self-cleaning function of the present invention filters through the comb-shaped fibers on the comb-type filtering component and grinds through the blades on the blade component, filters the mechanical seal cooling water, and can produce the following beneficial effects:

[0014] 1. Filter the mechanical seal cooling water, effectively prevent impurity particles from entering the mechanical seal friction pair, and cause rapid wear of the mechanical seal;

[0015] 2. The structure of the present rotary comb-type filter realizes the self-cleaning of the filter through the interaction between the blade and the comb-type, and solves the problem of high operation and maintenance cost of the traditional filter;

[0016] 3. The structural design is simple and reasonable, and no external pipeline and redundant power source are required.

[0017] Generally speaking, the rotary comb-type filter for mechanical seal with self-cleaning function of the present invention can effectively solve the problem of rapid wear of the mechanical seal of the marine pump caused by impurities in the medium entering the friction pair, and realizes the self-cleaning function and maintenance-free of the filter, greatly improving the reliability and service life of the pump unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of Embodiment 1 of the present invention;

[0019] Figure 2 is a schematic diagram of Embodiment 2 of the present invention;

[0020] Figure 3 is a schematic diagram of Embodiment 3 of the present invention;

[0021] Figure 4 is a schematic diagram of Embodiment 4 of the present invention;

[0022] Figure 5 It is a schematic diagram of the fifth embodiment of the present invention;

[0023] Figure 6 It is a schematic diagram of the sixth embodiment of the present invention;

[0024] Figure 7 It is a schematic diagram of the seventh embodiment of the present invention;

[0025] Figure 8 It is a schematic diagram of the eighth embodiment of the present invention. Detailed implementation manners

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Embodiment 1: As Figure 1 shown, a rotary comb filter for mechanical seals with self-cleaning function includes comb-shaped fibers 1, a housing 2, and a slotted paddle 3. The comb-shaped fibers 1 are mounted on the rotor component and rotate with the shaft. The comb-shaped fibers 1 have a set of comb-shaped distributed fibers with radially distributed ends that are inclined in a full circle. After the water flow containing impurities passes through the comb-shaped fibers 1 at the water inlet end, the clean water flows out from the water outlet end. The inclination angle of the comb-shaped fibers 1 just matches the housing 2, and the comb-shaped fibers 1 slightly contact the inclined surface of the housing 2, so that the impurities can be thrown out along the pores of the slotted paddle 3. The slotted paddle (3) is provided with paddles, and during the rotation of the comb-shaped fibers 1, the impurities deposited on the comb-shaped fibers 1 can be removed, realizing the self-cleaning function.

[0028] For media with less impurities, the slotted paddle 3 can be cancelled, and the impurities are thrown out by the centrifugal force of the rotating comb-shaped fibers 1.

[0029] Embodiment 2: As Figure 2 shown, on the basis of Embodiment 1, the paddles of the slotted paddle 3 are replaced with comb-shaped fibers 1. During the rotation of the comb-shaped fibers 1, the impurities deposited are brushed off by the stationary comb-shaped fibers on the slotted paddle 3, realizing self-cleaning.

[0030] Embodiment 3: As Figure 3 shown, the comb-shaped fibers 1 are provided with a full circle of comb-shaped fibers with radially distributed ends that are inclined along the circumferential direction and rotate with the shaft. After the water flow containing impurities passes through the comb-shaped fibers 1 at the water inlet end, the clean water flows out from the water outlet end. The inclination angle of the comb-shaped fibers 1 just matches the housing 2, and the comb-shaped fibers 1 slightly contact the inclined surface of the housing 2, so that the impurities can be thrown out along the pores of the slotted paddle 3. The slotted paddle 3 is provided with paddles, and during the rotation of the comb-shaped fibers 1, the impurities deposited on the comb-shaped fibers 1 can be removed, realizing the self-cleaning function.

[0031] For media with fewer impurities, the slotted flap 3 can be removed, and the impurities can be thrown out by the centrifugal force of the rotating comb-shaped fiber 1.

[0032] Example 4: As Figure 4 shown, on the basis of Example 3, the flap of the slotted flap 3 is replaced with a comb-shaped fiber. During the rotation of the comb-shaped fiber 1, the deposited impurities are brushed off by the stationary comb-shaped fiber on the slotted flap 3 to achieve self-cleaning.

[0033] Example 5: As Figure 5 shown, the comb-shaped fiber 1 is provided with a rotating flap, and the housing 2 is provided with a set of comb-shaped fibers with radially distributed and end-tilted around the whole circle. In this solution, the comb-shaped filter component is arranged on the pump body. After the water flow containing impurities passes through the comb-shaped fiber filtration at the water inlet end, the clean water flows out from the water outlet end. By changing the density of the comb-shaped fiber, the filtration effect can be controlled. The inclination angle of the comb-shaped fiber on the housing 2 just matches the inclination angle of the comb-shaped fiber 1. The comb-shaped fiber on the housing 2 slightly contacts the inclined surface of the comb-shaped fiber 1 with the rotating flap, and the impurities can be thrown out along the pores of the comb-shaped fiber 1. During the rotation of the flap on the comb-shaped fiber 1, the deposited impurities on the comb-shaped fiber can be removed to achieve the self-cleaning function.

[0034] Example 6: As Figure 6 shown, on the basis of Example 5, the flap of the comb-shaped fiber 1 is replaced with a comb-shaped fiber. During the rotation of the comb-shaped fiber 1, the deposited impurities on the comb-shaped fiber of the housing 2 are removed to achieve self-cleaning.

[0035] Example 7: As Figure 7 shown, the comb-shaped fiber 1 is provided with a rotating flap, and the housing 2 is provided with a set of comb-shaped fibers with end-tilted and distributed along the circumferential direction around the whole circle. After the water flow containing impurities passes through the comb-shaped fiber filtration at the water inlet end, the clean water flows out from the water outlet end. The inclination angle of the comb-shaped fiber on the housing 2 just matches the comb-shaped fiber 1 with the rotating flap. The comb-shaped fiber on the housing 2 slightly contacts the inclined surface of the comb-shaped fiber 1 with the rotating flap, and the impurities can be thrown out along the pores of the comb-shaped fiber 1. During the rotation of the flap on the comb-shaped fiber 1, the deposited impurities on the comb-shaped fiber of the housing 2 can be removed to achieve the self-cleaning function.

[0036] Example 8: As Figure 8 shown, on the basis of Example 7, the flap of the comb-shaped fiber 1 is replaced with a comb-shaped fiber. During the rotation of the comb-shaped fiber 1, the deposited impurities on the comb-shaped fiber of the housing 2 are removed to achieve self-cleaning.

[0037] The above are only the preferred embodiments of the present invention and do not impose any form of limitation on the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above, or modify it into equivalent embodiments with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A rotary comb filter for mechanical seals, characterized in that: It has a comb-shaped filtering component, which is installed on a rotating component and consists of a radial or circumferential comb-shaped fiber structure. The comb-shaped filtering component filters out sediment and solid particle impurities in the conveying medium of the marine centrifugal pump; the radial comb-shaped fiber structure is installed on the rotor component and rotates with the shaft. The comb-shaped fibers in the radial comb-shaped fiber structure are a set of comb-shaped distributed fibers with a whole-circle radial distribution and inclined ends, and the inclination angle on the comb-shaped fibers coincides with that of the housing; the comb-shaped fibers in the circumferential comb-shaped fiber structure are a set of comb-shaped fibers with inclined ends distributed along the circumferential direction and rotate with the shaft, and the inclination angle on the comb-shaped fibers coincides with that of the housing.

2. The rotary comb filter for mechanical seal according to claim 1, characterized in that: A flap component is also installed on the rotating component or the stationary component. The flap component consists of a flap with pores or a flap with comb-shaped fibers. The flap component scrapes the comb-shaped fibers in the comb-shaped filtering component to remove the attached impurities and flings them out from the gaps to achieve self-cleaning of the filter.

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