CN203114717U - Multistage pump packing seal formal structure - Google Patents
Multistage pump packing seal formal structure Download PDFInfo
- Publication number
- CN203114717U CN203114717U CN 201220736408 CN201220736408U CN203114717U CN 203114717 U CN203114717 U CN 203114717U CN 201220736408 CN201220736408 CN 201220736408 CN 201220736408 U CN201220736408 U CN 201220736408U CN 203114717 U CN203114717 U CN 203114717U
- Authority
- CN
- China
- Prior art keywords
- gland
- chamber
- multistage pump
- seal
- packing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a multistage pump packing seal formal structure, comprising a shaft, a shaft sleeve, a suction section, a packing gland and a water seal ring, wherein the shaft sleeve, the suction section and the packing gland form a sealed chamber in an enclosure form; the water seal ring is positioned in the chamber and partitions the chamber into two half chambers which are close to and far away from the packing gland respectively; the multistage pump packing seal formal structure is characterized in that an expanded graphite is arranged in the half chamber which is close to the packing gland; and an oil immersed asbestos packing block is arranged in the half chamber which is far away from the packing gland. The multistage pump packing seal formal structure has the following advantages of simple structure and excellent effect, completely solving the problem of serious leakage of sealed part, prolonging the service life of the seal and the repair cycle of the water pump, and reducing the using cost of user.
Description
Technical field
The utility model relates to multistage pump, particularly a kind of multistage pump packing seal form structure.
Background technique
Existing multistage pump packing seal form structure, as shown in Figure 1, comprise: axle 1, axle sleeve 2, suction casing 3, Gland 4 and seal cage 5, wherein, described axle sleeve, suction casing and Gland surround an airtight chamber, described seal cage is positioned at this chamber and this chamber is divided near Gland with away from two and half chambers of Gland, and oil immersion asbestos packing piece all is set in two and half chambers.In the course of the work, Gland compresses and impregnating agent in the oil immersion asbestos packing piece can be extruded, and filling block is become flat, makes axle sleeve wearing and tearing aggravation, causes centrifugal pump seal to leak.This packing seal form structure average life is about 5 months, as
CloseEnvelope property is bad, also can cause equipment to run, emit, leak, drip, and causes decompression when serious, brings a lot of inconvenience to equipment control, causes the wasting of resources.
The model utility content
The utility model purpose is to solve the not good problem of sealing effect, proposes a kind of novel multistage pump packing seal form structure.
To achieve these goals, the utility model is achieved in that multistage pump packing seal form structure, comprise: axle, axle sleeve, suction casing, Gland and seal cage, wherein, described axle sleeve, suction casing and Gland surround an airtight chamber, described seal cage is positioned at this chamber and this chamber is divided near Gland with away from two and half chambers of Gland, it is characterized in that: fill out in described close half chamber of Gland and be provided with mass of expanded graphite, fill out in half chamber away from Gland and be provided with oil immersion asbestos packing piece.
Preferably, be provided with the support spacer between the adjacent mass of expanded graphite, also be provided with the support spacer between Gland and the mass of expanded graphite.
Preferably, be provided with the support spacer between the adjacent oil immersion asbestos packing piece.
Preferably, the material of described support spacer is fine copper.
Preferably, the seal face of described Gland is perpendicular to the axle sleeve side.
Advantage of the present utility model: simple in structure, good sealing effect thoroughly solves the sealing position and leaks serious problem, prolongs the repair cycle of sealing working life and water pump, reduces user's user cost.
Description of drawings
Accompanying drawing 1 is the prior art constructions schematic representation.
Accompanying drawing 2 is structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is elaborated.
See also Fig. 2, shown in Figure 2 is a kind of multistage pump packing seal form structure, comprise: axle 1, axle sleeve 2, suction casing 3, Gland 4 and seal cage 5, wherein, described axle sleeve, suction casing and Gland surround an airtight chamber, described seal cage is positioned at this chamber and makes this chamber be divided into left and right two and half chambers, and indoor the filling out of left half cavity is provided with mass of expanded graphite 7, fills out in right half chamber and is provided with oil immersion asbestos packing piece 6.Be provided with fine copper between the adjacent mass of expanded graphite and support spacer 8, also be provided with the support spacer between Gland and the mass of expanded graphite.Also be provided with fine copper between the adjacent oil immersion asbestos packing piece and support spacer.The seal face of described Gland must smoothly be with angle, and namely it is perpendicular to the axle sleeve side.
Be not difficult to find out, the oil immersion asbestos packing piece that former left half cavity is indoor replaces with expanded graphite, because comparing, itself and asbestos packing have better elastic and pliability, heat resistance is good, at the bottom of the friction factor, the advantage of long service life need not consider fully that namely oil immersion asbestos packing piece pressurized impregnating agent is extruded the problem of coming, so not only guaranteed good sealing effect, but also can save water power and prolong repair cycle of water pump.
Below only expressed mode of execution of the present utility model, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model patent scope.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (5)
1. multistage pump packing seal form structure, comprise: axle, axle sleeve, suction casing, Gland and seal cage, wherein, described axle sleeve, suction casing and Gland surround an airtight chamber, described seal cage is positioned at this chamber and this chamber is divided near Gland with away from two and half chambers of Gland, it is characterized in that: fill out in described close half chamber of Gland and be provided with mass of expanded graphite, fill out in half chamber away from Gland and be provided with oil immersion asbestos packing piece.
2. multistage pump packing seal form structure according to claim 1 is characterized in that: be provided with the support spacer between the adjacent mass of expanded graphite, also be provided with the support spacer between Gland and the mass of expanded graphite.
3. multistage pump packing seal form structure according to claim 1 is characterized in that: be provided with the support spacer between the adjacent oil immersion asbestos packing piece.
4. according to claim 2 or 3 described multistage pump packing seal form structures, it is characterized in that: the material of described support spacer is fine copper.
5. multistage pump packing seal form structure according to claim 2, it is characterized in that: the seal face of described Gland is perpendicular to the axle sleeve side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220736408 CN203114717U (en) | 2012-12-28 | 2012-12-28 | Multistage pump packing seal formal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220736408 CN203114717U (en) | 2012-12-28 | 2012-12-28 | Multistage pump packing seal formal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203114717U true CN203114717U (en) | 2013-08-07 |
Family
ID=48895067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220736408 Expired - Fee Related CN203114717U (en) | 2012-12-28 | 2012-12-28 | Multistage pump packing seal formal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203114717U (en) |
-
2012
- 2012-12-28 CN CN 201220736408 patent/CN203114717U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20151228 |
|
| EXPY | Termination of patent right or utility model |