GB2124308A - Slide ring seal - Google Patents

Slide ring seal Download PDF

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Publication number
GB2124308A
GB2124308A GB08219319A GB8219319A GB2124308A GB 2124308 A GB2124308 A GB 2124308A GB 08219319 A GB08219319 A GB 08219319A GB 8219319 A GB8219319 A GB 8219319A GB 2124308 A GB2124308 A GB 2124308A
Authority
GB
United Kingdom
Prior art keywords
slide ring
sealing
shaft
seal
ring seal
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.)
Withdrawn
Application number
GB08219319A
Inventor
Matti Vahteri
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
E Sarlin Oy AB
Original Assignee
E Sarlin Oy AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by E Sarlin Oy AB filed Critical E Sarlin Oy AB
Priority to GB08219319A priority Critical patent/GB2124308A/en
Publication of GB2124308A publication Critical patent/GB2124308A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3436—Pressing means
    • F16J15/3452—Pressing means the pressing force resulting from the action of a spring

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Sealing (AREA)

Abstract

A slide ring seal comprises a slide ring (2) rotating with and axially movable on a shaft (1) and provided on both ends with sealing faces (3, 4), against which abut stationary sealing rings (5, 6) one of which being acted upon by axial sealing spring forces (7). <IMAGE>

Description

SPECIFICATION Slide ring seal The present invention concerns a slide ring seal with a slide ring rotating with the shaft, this slide ring being provided with sealing faces on both sides, against which faces abut stationary sealing rings, on which an axial sealing force acts, this sealing force acting only on one of the two sealing rings and through this on the slide ring and on the opposite sealing ring.
Seals of this kind are needed for instance on submerged pumps having three different volumes: that of the liquid which is being pumped, the oil volume and the air volume of the motor. These volumes must be sealed against each other at the shaft passing through. The slide ring rotating with the shaft and the sealing rings on both sides thereof have been loaded with springs, each of its own, to press against the slide ring.
The object of this invention is to provide a new and simple type of slide ring seal. The slide ring seal of the invention is characterized in that the ring in the middle is axially movable on the shaft.
Since the slide ring is axially movable, the spring force acts on both sealing faces of the slide ring. It is essential in the invention that the spring or springs have been disposed on only one side of the seal, that is, there is only one spring or group of springs (if small springs are used) for the three rings. By the aid of the invention a simpler design solution is achieved, implying saving in costs and easier servicing.
The invention is described in the following with the aid of an example and with reference to the drawing attached, presenting a slide ring seal according to the invention, axially sectioned.
The slide ring seal comprises a slide ring 2 rotating with the shaft 1 and provided on both sides with sealing faces 3, 4, against which abut stationary sealing rings 5, 6. The slide ring 2 is axially movable on the shaft 1, and the sealing spring force of the slide ring seal acts only on one of the two sealing rings, 6. The spring force has been produced by means of a helical spring 7 wound around the shaft 1, the retainer pins 8, 9 provided on the ends of this spring preventing the sealing ring 6 from rotating with the slide ring 2.
The other sealing ring 5 is secured against rotation by a tongue 10 in an opposing recess 12 in the housing 1 The slide ring 2 is secured with the pin 13 to rotate positively together with the shaft 1.
The slide ring seal seals the liquid volume 14 against the oil volume 1 5 and the oil volume 1 5 against the air volume 1 6. By reason of its simplicity, the seal is advantageous and easy to service.
It is obvious to a person skiiled in the art that different embodiments of the invention may vary within the scope of the claims stated below.
1. A slide ring seal with a slide ring (2) rotating with the shaft (1), provided on both sides with sealing faces (3, 4), against which abut stationary sealing rings (5, 6) acted upon by an axial sealing spring force (7), which acts only on one of the two sealing rings (6) and through this on the slide ring and on the opposite sealing ring (5), characterized in that the ring in the middle (2) is axially movable on the shaft (1).
2. A slide ring seal substantially as herein described with reference to the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (2)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Slide ring seal The present invention concerns a slide ring seal with a slide ring rotating with the shaft, this slide ring being provided with sealing faces on both sides, against which faces abut stationary sealing rings, on which an axial sealing force acts, this sealing force acting only on one of the two sealing rings and through this on the slide ring and on the opposite sealing ring. Seals of this kind are needed for instance on submerged pumps having three different volumes: that of the liquid which is being pumped, the oil volume and the air volume of the motor. These volumes must be sealed against each other at the shaft passing through. The slide ring rotating with the shaft and the sealing rings on both sides thereof have been loaded with springs, each of its own, to press against the slide ring. The object of this invention is to provide a new and simple type of slide ring seal. The slide ring seal of the invention is characterized in that the ring in the middle is axially movable on the shaft. Since the slide ring is axially movable, the spring force acts on both sealing faces of the slide ring. It is essential in the invention that the spring or springs have been disposed on only one side of the seal, that is, there is only one spring or group of springs (if small springs are used) for the three rings. By the aid of the invention a simpler design solution is achieved, implying saving in costs and easier servicing. The invention is described in the following with the aid of an example and with reference to the drawing attached, presenting a slide ring seal according to the invention, axially sectioned. The slide ring seal comprises a slide ring 2 rotating with the shaft 1 and provided on both sides with sealing faces 3, 4, against which abut stationary sealing rings 5, 6. The slide ring 2 is axially movable on the shaft 1, and the sealing spring force of the slide ring seal acts only on one of the two sealing rings, 6. The spring force has been produced by means of a helical spring 7 wound around the shaft 1, the retainer pins 8, 9 provided on the ends of this spring preventing the sealing ring 6 from rotating with the slide ring 2. The other sealing ring 5 is secured against rotation by a tongue 10 in an opposing recess 12 in the housing 1 The slide ring 2 is secured with the pin 13 to rotate positively together with the shaft 1. The slide ring seal seals the liquid volume 14 against the oil volume 1 5 and the oil volume 1 5 against the air volume 1 6. By reason of its simplicity, the seal is advantageous and easy to service. It is obvious to a person skiiled in the art that different embodiments of the invention may vary within the scope of the claims stated below. CLAIMS
1. A slide ring seal with a slide ring (2) rotating with the shaft (1), provided on both sides with sealing faces (3, 4), against which abut stationary sealing rings (5, 6) acted upon by an axial sealing spring force (7), which acts only on one of the two sealing rings (6) and through this on the slide ring and on the opposite sealing ring (5), characterized in that the ring in the middle (2) is axially movable on the shaft (1).
2. A slide ring seal substantially as herein described with reference to the accompanying drawing.
GB08219319A 1982-07-03 1982-07-03 Slide ring seal Withdrawn GB2124308A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08219319A GB2124308A (en) 1982-07-03 1982-07-03 Slide ring seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08219319A GB2124308A (en) 1982-07-03 1982-07-03 Slide ring seal

Publications (1)

Publication Number Publication Date
GB2124308A true GB2124308A (en) 1984-02-15

Family

ID=10531470

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08219319A Withdrawn GB2124308A (en) 1982-07-03 1982-07-03 Slide ring seal

Country Status (1)

Country Link
GB (1) GB2124308A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5062397A (en) * 1990-09-07 1991-11-05 Eaton Corporation Valve stem seal
GB2316721A (en) * 1996-09-02 1998-03-04 Aes Eng Ltd Mechanical seal
EP1474624B1 (en) * 2002-02-14 2012-02-22 Huhnseal AB Single seal with resilient member
CN105121921A (en) * 2013-04-22 2015-12-02 卡尔弗罗伊登柏格两合公司 Slide ring seal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1234391A (en) * 1967-05-09 1971-06-03

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1234391A (en) * 1967-05-09 1971-06-03

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5062397A (en) * 1990-09-07 1991-11-05 Eaton Corporation Valve stem seal
GB2316721A (en) * 1996-09-02 1998-03-04 Aes Eng Ltd Mechanical seal
GB2316721B (en) * 1996-09-02 2000-11-22 Aes Eng Ltd Mechanical seal
EP1474624B1 (en) * 2002-02-14 2012-02-22 Huhnseal AB Single seal with resilient member
CN105121921A (en) * 2013-04-22 2015-12-02 卡尔弗罗伊登柏格两合公司 Slide ring seal

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)