Submersible axial-flow pump mechanical seal belt filter screen structure
By adding a filter screen structure to the mechanical seal of the submersible axial flow pump, the problem of easy jamming of the mechanical seal was solved, the durability of the mechanical seal and the reduction of maintenance costs were achieved, and the continuous operation of the equipment was ensured.
Patent Information
- Application Number
- CN202520150706.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-01-22
AI Technical Summary
Existing submersible axial flow pump mechanical seals are easily jammed by impurities in the medium, leading to seal damage, high maintenance costs and inconvenience, especially when on-site repair is not possible and the pump must be returned to the factory for repair.
A filter screen is installed at the mechanical seal of the submersible axial flow pump to filter impurities in the medium, prevent them from entering the mechanical seal, and extend the service life of the mechanical seal.
It effectively prevents impurities from jamming the mechanical seal, extends the service life of the mechanical seal, reduces the number of repairs and costs, and ensures that drainage operations are not affected during the flood season.
Smart Images
Figure CN223690052U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to submersible axial flow pump machine seal technical field especially relates to a submersible axial flow pump machine seal belt filter screen structure. BACKGROUND
[0002] In prior art, the machine seal of submersible axial flow pump is water lubrication, after medium passes through water inlet horn, enters impeller seat, flows to machine seal at the gap between impeller seat and guide vane body, when the medium transported is dirty and has impurities, such as small plastic bag, slender plastic rope, will directly enter machine seal, causing machine seal to be stuck and damaged, after machine seal is damaged, water flows to large oil chamber, causing oil and water probe in large oil chamber to alarm and stop, and general project site does not have submersible axial flow pump maintenance condition, needs to return to factory for maintenance and replacement of machine seal and replacement of lubricating oil in oil chamber, high cost, long time. SUMMARY
[0003] The utility model provides a submersible axial flow pump machine seal belt filter screen structure.
[0004] In order to realize above-mentioned purpose, the technical scheme of the utility model is:
[0005] A submersible axial flow pump machine seal belt filter screen structure, characterized by comprising water inlet horn, impeller seat, guide vane body, first machine seal, machine seal gland and filter screen, the water inlet horn is located at the front end of pump machine, the impeller seat, guide vane body, first machine seal and machine seal gland are sleeved in the front portion of pump shaft, the impeller seat and guide vane body are sequentially arranged front and back, the front side of guide vane body and the rear side of impeller seat are equipped with gap, the first machine seal and machine seal gland are sequentially arranged in the gap front and back, the front and back sides of machine seal gland are respectively closely matched with first machine seal and guide vane body, the filter screen is arranged around the outer periphery of first machine seal and machine seal gland, and the filter screen is fixed with machine seal gland through set screw.
[0006] Further, the front portion of the pump shaft is sleeved with a second machine seal, and the second machine seal is located at the inlet of the oil chamber of the pump machine.
[0007] Further, the oil chamber is provided with an oil and water probe.
[0008] The utility model adds filter screen at the first machine seal of submersible axial flow pump, does not let impurities to be stuck and damage machine seal, prolongs the service life of machine seal, reduces the time and cost of back and forth repair, does not affect drainage during flood season;The installation and processing of filter screen are simple, and the cost is low. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 It is whole structure schematic diagram of the utility model.
[0010] Reference Signs:
[0011] 1. Inlet horn, 2. Impeller seat, 3. Guide vane body, 4. First mechanical seal, 5. Mechanical seal cover.
[0012] 6 Second mechanical seal, 7 Oil-water probe, 8 Set screw, 9 Filter screen. Detailed Implementation
[0013] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0014] This utility model discloses a submersible axial flow pump sealing belt filter structure, such as... Figure 1 As shown, the pump includes an inlet horn 1, an impeller seat 2, a guide vane body 3, a first mechanical seal 4, a mechanical seal cover 5, and a filter screen 9. The inlet horn 1 is located at the front end of the pump. The impeller seat 2, the guide vane body 3, and the first mechanical seal 4 are fitted onto the front part of the pump shaft. The impeller seat 2 and the guide vane body 3 are arranged sequentially front and back. There is a gap between the front side of the guide vane body 3 and the rear side of the impeller seat 2. The first mechanical seal 4 is located within the gap.
[0015] The mechanical seal cover 5 is sleeved on the front of the pump shaft. The mechanical seal cover 5 is located on the rear side of the first mechanical seal 4. The front and rear sides of the mechanical seal cover 5 are tightly fitted with the first mechanical seal 4 and the guide vane body 3, respectively. The filter screen 9 is arranged around the outer periphery of the first mechanical seal 4 and the mechanical seal cover 5. The filter screen 9 is fixed to the mechanical seal cover 5 by the set screw 8.
[0016] During use, the medium enters the impeller seat 2 after passing through the water inlet horn 1. It flows into the first mechanical seal 4 through the gap between the impeller seat 2 and the guide vane body 3. In the case of a large amount of impurities, the impurities in the gap are filtered out by the filter screen 9, so that the impurities will not jam and damage the first mechanical seal 4.
[0017] The front part of the pump shaft is fitted with the second mechanical seal 6, which is located at the inlet of the pump oil chamber. The oil chamber is equipped with an oil-water probe 7. The design of retaining the oil-water probe 7 means that if water still flows into the large oil chamber, the oil-water probe in the large oil chamber will alarm and stop the pump.
[0018] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A submersible axial flow pump machine seal band screen structure, characterized by, The water inlet horn (1), the impeller seat (2), the guide vane body (3), the first mechanical seal (4), the mechanical seal cover (5) and the filter screen (9) are included, the water inlet horn (1) is located at the front end of the pump, the impeller seat (2), the guide vane body (3), the first mechanical seal (4) and the mechanical seal cover (5) are sleeved on the front part of the pump shaft, the impeller seat (2) and the guide vane body (3) are sequentially arranged front and back, the front side of the guide vane body (3) and the rear side of the impeller seat (2) are provided with a gap, the first mechanical seal (4) and the mechanical seal cover (5) are sequentially arranged in the gap, the front and rear sides of the mechanical seal cover (5) are respectively tightly matched with the first mechanical seal (4) and the guide vane body (3), the filter screen (9) is arranged around the outer periphery of the first mechanical seal (4) and the mechanical seal cover (5), and the filter screen (9) and the mechanical seal cover (5) are fixed through the set screw (8).
2. The submersible mixed flow pump machine seal band screen structure according to claim 1, characterized in that, The front part of the pump shaft is sleeved with the second mechanical seal (6), and the second mechanical seal (6) is located at the inlet of the pump oil chamber.
3. The submersible mixed flow pump machine seal band screen structure according to claim 2, characterized in that, The oil chamber is provided with an oil-water probe (7).