CN213331660U - Sanitary flushable double-end-face wave spring mechanical sealing device - Google Patents
Sanitary flushable double-end-face wave spring mechanical sealing device Download PDFInfo
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- CN213331660U CN213331660U CN202021415421.8U CN202021415421U CN213331660U CN 213331660 U CN213331660 U CN 213331660U CN 202021415421 U CN202021415421 U CN 202021415421U CN 213331660 U CN213331660 U CN 213331660U
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Abstract
The utility model provides a sanitary type can wash bi-polar face wave spring mechanical seal device, including the pump shaft and with pump shaft fixed connection's impeller, the cover has the pump cover in the outer fringe of pump shaft and impeller junction, and the cover has the water seal seat in the pump cover outer fringe, seals through the fifth sealing washer between water seal seat and the pump cover, forms the pump chamber between pump cover and impeller, the pump shaft, forms main seal structure in the pump chamber, forms auxiliary seal structure between water seal seat and the pump shaft, and main seal, auxiliary seal and pump shaft are equipped with the axle sleeve respectively within a definite time. The utility model discloses can be applied to the complicated condition of health trade operating mode, its simple structure, operation are stable, easily make, are one kind and worth the wide application novel bearing seal device.
Description
Technical Field
The utility model relates to an axle head sealing device field specifically is a double-ended face wave spring mechanical seal device can be washed to sanitary type for in the clean centrifugal pump that requires higher of health such as food, beverage, dairy products.
Background
Nowadays, people pay more attention to the problem of food safety, and it is very important for manufacturers to ensure the sanitation of the food processing process. When various media are conveyed by using a sanitary pump in the processing process, the safety and the sanitation of the pump during conveying are determined by the performance of the mechanical seal. The various complex characteristics of the media make efficient operation of the machine seal challenging.
When viscous and easily crystallized media are conveyed, the media are easy to cause sealing failure when the media deposit and crystallize on the sealing end face; when high-temperature media are conveyed, the sealing end face is often burnt out due to overhigh temperature. Therefore, a double-ended mechanical seal is often used for flushing, lubricating and cooling the sealing end face, so as to ensure stable conveying of materials.
Mechanical seals are also inevitably damaged during long-term material transport, so that easy handling and replacement of the seals are also necessary.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve prior art's problem, provide a sanitary type can wash bi-polar face wave spring mechanical seal device, can be applied to the complicated condition of health trade operating mode, its simple structure, operation are stable, easily make, are one kind and worth the wide application novel bearing seal device.
The utility model comprises a pump shaft and an impeller fixedly connected with the pump shaft, wherein a pump cover is sleeved on the outer edge of the joint of the pump shaft and the impeller, a water seal seat is sleeved on the outer edge of the pump cover, the water seal seat and the pump cover are sealed by a fifth sealing ring, a pump cavity is formed between the pump cover and the impeller and between the pump cover and the pump shaft, a main sealing structure is formed in the pump cavity, and an auxiliary sealing structure is formed between the water seal seat and the pump shaft;
the main sealing structure comprises a moving ring fixing ring, a moving ring, a first sealing ring, a main sealing wave spring, a second sealing ring, a static ring fixing ring and a static ring which are arranged in a pump cavity, wherein the moving ring fixing ring is screwed into the impeller, the moving ring fixing ring presses the moving ring to abut against the back surface of the impeller, and the sealing between the moving ring fixing ring and the impeller is realized through the first sealing ring at the groove on the moving ring; the static ring is embedded on the static ring fixing ring to form a whole, one end of the main sealing wave spring is abutted with the pump cover, the other end of the main sealing wave spring is abutted with the main sealing shaft sleeve, the main sealing shaft sleeve is abutted with the static ring, the static ring and the dynamic ring are abutted with each other to form a sealing end face, and the pressure of the sealing end face is formed by the pressure of the pump cavity and the compression spring; the static ring fixing ring and the pump cover are sealed through a second sealing ring;
the auxiliary sealing structure is externally arranged and comprises an auxiliary static ring, an auxiliary static ring fixing ring, an auxiliary dynamic ring, a third sealing ring, an auxiliary sealing wave spring, a fixing pin and a fourth sealing ring, wherein the auxiliary dynamic ring rotates together with the pump shaft through the fixing pin fixed on the pump shaft, and the auxiliary dynamic ring and the pump shaft are sealed through the third sealing ring; the auxiliary static ring and the auxiliary static ring fixing ring are made into a whole, one end of an auxiliary sealing wave spring is abutted with the pump cover, the other end of the auxiliary sealing wave spring is abutted with an auxiliary sealing shaft sleeve, the auxiliary sealing shaft sleeve is abutted with the auxiliary static ring, the auxiliary static ring and the auxiliary dynamic ring form a sealing end face to prevent cooling liquid from leaking, a sealing ring groove is formed in the auxiliary static ring fixing ring, and sealing is realized through a fourth sealing ring and a water seal seat; the auxiliary stationary ring fixing ring is fixedly connected with the stationary ring fixing ring through an anti-rotation pin.
The main sealing structure is arranged on the pump shaft, the auxiliary sealing shaft sleeve is arranged between the auxiliary sealing structure and the pump shaft, the wave spring can be prevented from contacting the pump shaft, and the wave spring is effectively prevented from wearing the pump shaft.
Further improve, supplementary quiet ring retainer plate and quiet ring retainer plate on a plurality of apertures of equipartition, the anti-rotating pin is fixed through aperture and two retainer plates, the aperture is convenient for anti-rotating pin on the one hand fixed, on the other hand makes things convenient for the coolant liquid to get into sealed chamber and washes, lubricates and cools off to seal end face, makes things convenient for the coolant liquid to get into supplementary seal end face lubrication and cooling.
The improved pump cover is characterized in that two water inlet holes are formed in the pump cover, so that the cooling water pipe can be used immediately.
The utility model has the advantages that:
the double-end-face mechanical sealing device is simple in structure and very easy to replace and install. When special materials are conveyed, the cooling liquid pipe can be connected to effectively lubricate and cool the sealing device, a small amount of residual materials on the sealing end face are washed, and the sanitation of the materials is also ensured. In the conveying process, the pressure fluctuation facing the pump cavity can be timely compensated by the wave spring, so that the leakage is prevented. Therefore, the flushable double-end face sealing device can be applied to the condition of complex working conditions in the sanitary industry, has simple structure, stable operation and easy manufacture, and is a novel shaft sealing device which is widely applied.
Drawings
Fig. 1 is a sectional view of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
The utility model discloses the structure is as shown in fig. 1, including pump shaft 17 and with pump shaft 17 fixed connection's impeller 1, the cover has pump cover 5 in the outer fringe of pump shaft 17 and impeller 1 junction, and the cover has water seal seat 9 in the outer fringe of pump cover 5, seals through fifth sealing washer 8 between water seal seat 9 and the pump cover 5, forms pump chamber 23 between pump cover 5 and impeller 1, the pump shaft 17, forms main seal structure in the pump chamber 23, forms auxiliary seal structure between water seal seat 9 and the pump shaft 17.
The main sealing structure comprises a moving ring fixing ring 2, a moving ring 3, a first sealing ring 4, a main sealing wave spring 20, a second sealing ring 10, a static ring fixing ring 7 and a static ring 6 which are arranged in a pump cavity, wherein the moving ring 3 fixing ring is screwed into the impeller 1, the moving ring fixing ring 2 presses the moving ring 3 to abut against the back surface of the impeller 1, and the sealing between the moving ring 3 and the impeller 1 is realized through the first sealing ring 4 at the groove on the moving ring 3; the static ring 6 is embedded on the static ring fixing ring 7 to form a whole, one end of a main sealing wave spring 20 is abutted with the pump cover 5, the other end of the main sealing wave spring is abutted with a main sealing shaft sleeve 18, the main sealing shaft sleeve is abutted with the static ring 6, the static ring 6 and the dynamic ring 3 are abutted with each other to form a sealing end face, and the pressure of the sealing end face is formed by the pressure of the pump cavity and a compression spring; the static ring fixing ring 7 and the pump cover 5 are sealed through a second sealing ring 10;
the auxiliary sealing structure is external and comprises an auxiliary static ring fixing ring 11, an auxiliary static ring 13, an auxiliary dynamic ring 14, a third sealing ring 15, an auxiliary sealing wave spring 19, a fixing pin 16 and a fourth sealing ring 12, wherein the auxiliary dynamic ring 14 rotates together with a pump shaft 17 through the fixing pin 16 fixed on the pump shaft 17, and the auxiliary dynamic ring 14 and the pump shaft 17 are sealed by the third sealing ring 15; the auxiliary static ring 13 and the auxiliary static ring fixing ring 11 are made into a whole, one end of an auxiliary sealing wave spring 19 is abutted against the pump cover 5, the other end of the auxiliary sealing wave spring is abutted against an auxiliary sealing shaft sleeve 21, the auxiliary sealing shaft sleeve 21 is abutted against the auxiliary static ring 13, the auxiliary static ring 13 and the auxiliary moving ring 14 form a sealing end face to prevent cooling liquid from leaking, a sealing ring groove is formed in the auxiliary static ring fixing ring 11, and sealing is realized through a fourth sealing ring 12 and a water seal seat 9; the auxiliary stationary ring fixing ring 11 and the stationary ring fixing ring 7 are fixedly connected through an anti-rotation pin 22.
A main sealing shaft sleeve 18 is arranged between the main sealing structure and the pump shaft 17, and an auxiliary sealing shaft sleeve 21 is arranged between the auxiliary sealing structure and the pump shaft 17, so that the wave spring can be prevented from contacting the pump shaft, and the wave spring is effectively prevented from wearing the pump shaft.
Supplementary quiet ring retainer plate 11 and quiet ring retainer plate 7 on a plurality of apertures of equipartition, the stop pin is fixed through aperture and two retainer plates, the aperture is convenient for on the one hand the stop pin 22 is fixed, on the other hand makes things convenient for the coolant liquid to get into sealed chamber and washes, lubricates and cools off sealing end face, makes things convenient for the coolant liquid to get into supplementary sealing end face lubrication and cooling.
The pump cover 5 is provided with two water inlet holes, so that the cooling water pipe can be used immediately.
The utility model discloses the concrete application way is many, and the above-mentioned only is the preferred embodiment of the utility model, should point out, to ordinary skilled person in this technical field, under the prerequisite that does not deviate from the utility model discloses the principle, can also make a plurality of improvements, and these improvements also should be regarded as the utility model discloses a protection scope.
Claims (3)
1. The utility model provides a double-ended corrugated spring mechanical seal device can wash of health type which characterized in that: the pump comprises a pump shaft and an impeller fixedly connected with the pump shaft, wherein a pump cover is sleeved on the outer edge of the joint of the pump shaft and the impeller, a water seal seat is sleeved on the outer edge of the pump cover, the water seal seat and the pump cover are sealed through a fifth sealing ring, a pump cavity is formed between the pump cover and the impeller and between the pump cover and the pump shaft, a main sealing structure is formed in the pump cavity, an auxiliary sealing structure is formed between the water seal seat and the pump shaft, a main sealing shaft sleeve is arranged between the main sealing structure and the pump shaft, and an;
the main sealing structure comprises a moving ring fixing ring, a moving ring, a first sealing ring, a main sealing wave spring, a second sealing ring, a static ring fixing ring and a static ring which are arranged in a pump cavity, wherein the moving ring fixing ring is screwed into the impeller, the moving ring fixing ring presses the moving ring to abut against the back surface of the impeller, and the sealing between the moving ring fixing ring and the impeller is realized through the first sealing ring at the groove on the moving ring; the static ring is embedded on the static ring fixing ring to form a whole, one end of the main sealing wave spring is abutted with the pump cover, the other end of the main sealing wave spring is abutted with the main sealing shaft sleeve, the main sealing shaft sleeve is abutted with the static ring, the static ring and the movable ring are abutted with each other to form a sealing end face, and the pressure of the sealing end face is formed by the pressure of the pump cavity and the pressure of the main sealing wave spring; the static ring fixing ring and the pump cover are sealed through a second sealing ring;
the auxiliary sealing structure is externally arranged and comprises an auxiliary static ring, an auxiliary static ring fixing ring, an auxiliary dynamic ring, a third sealing ring, an auxiliary sealing wave spring, a fixing pin and a fourth sealing ring, wherein the auxiliary dynamic ring rotates together with the pump shaft through the fixing pin fixed on the pump shaft, and the auxiliary dynamic ring and the pump shaft are sealed through the third sealing ring; the auxiliary static ring and the auxiliary static ring fixing ring are made into a whole, one end of an auxiliary sealing wave spring is abutted with the pump cover, the other end of the auxiliary sealing wave spring is abutted with an auxiliary sealing shaft sleeve, the auxiliary sealing shaft sleeve is abutted with the auxiliary static ring, the auxiliary static ring and the auxiliary dynamic ring form a sealing end face to prevent cooling liquid from leaking, a sealing ring groove is formed in the auxiliary static ring fixing ring, and sealing is realized through a fourth sealing ring and a water seal seat; the auxiliary stationary ring fixing ring is fixedly connected with the stationary ring fixing ring through an anti-rotation pin.
2. The sanitary flushable double-ended wave spring mechanical seal of claim 1, wherein: supplementary quiet ring retainer plate and quiet ring retainer plate on a plurality of apertures of equipartition, the stop pin is fixed through aperture and two retainer plates, the aperture is convenient for the stop pin on the one hand fixed, on the other hand makes things convenient for the coolant liquid to get into sealed chamber and washes, lubricates and cools off to seal end face, makes things convenient for the coolant liquid to get into supplementary seal end face lubrication and cooling.
3. The sanitary flushable double-ended wave spring mechanical seal of claim 1, wherein: the pump cover is provided with two water inlet holes, so that the cooling water pipe can be used immediately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021415421.8U CN213331660U (en) | 2020-07-17 | 2020-07-17 | Sanitary flushable double-end-face wave spring mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021415421.8U CN213331660U (en) | 2020-07-17 | 2020-07-17 | Sanitary flushable double-end-face wave spring mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213331660U true CN213331660U (en) | 2021-06-01 |
Family
ID=76089688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021415421.8U Active CN213331660U (en) | 2020-07-17 | 2020-07-17 | Sanitary flushable double-end-face wave spring mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213331660U (en) |
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2020
- 2020-07-17 CN CN202021415421.8U patent/CN213331660U/en active Active
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