CN203189317U - Mechanical balanced type soft stuffing shaft seal for pump - Google Patents
Mechanical balanced type soft stuffing shaft seal for pump Download PDFInfo
- Publication number
- CN203189317U CN203189317U CN 201320116570 CN201320116570U CN203189317U CN 203189317 U CN203189317 U CN 203189317U CN 201320116570 CN201320116570 CN 201320116570 CN 201320116570 U CN201320116570 U CN 201320116570U CN 203189317 U CN203189317 U CN 203189317U
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- Prior art keywords
- stuffing
- piston
- spring
- type soft
- pump
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- Expired - Fee Related
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Abstract
The utility model belongs to the field of mechanical engineering, and particularly relates to a mechanical balanced type soft stuffing shaft seal for a pump. The mechanical balanced type soft stuffing shaft seal for the pump comprises a stuffing gland, a sealing cavity defined by packing stuffing and liquid stuffing in the sealing cavity. The sealing cavity is connected with a stuffing box through a pipeline. A piston and a spring are arranged in the stuffing box. A sealing ring is arranged between the piston and the inner wall of the stuffing box. One end of the spring is connected with the upper end face of the piston and the other end of the spring is fixed on the inner top portion of the stuffing box. The mechanical balanced type soft stuffing shaft seal for the pump is simple in structure and capable of enabling the pressure of media outside the sealing cavity to be equal or similar to that of the liquid stuffing inside the sealing cavity through the self-adjusting function of the spring, reducing the difficulty for sealing, reducing liquid stuffing consumption, simplifying maintenance, being free of maintenance for a long time and improving the sealing effect and economical efficiency. When the liquid stuffing inside the sealing cavity needs to be compensated, the liquid stuffing can be filled into the sealing cavity through the adjustment of screws and operation is simple and convenient.
Description
Technical field
The utility model relates to a kind of pump with mechanical balance type soft packing axle envelope, belongs to mechanical engineering field.
Background technique
The axle envelope of existing pump class or vacuum equipment adopts the soft packing shaft seal structure usually, the defective of this shaft seal structure is of long duration easily loosening between soft packing after compressing and the axle, because the wearing and tearing of soft packing, can engender the gap between soft packing and the axle, vacuum equipment can be under the barometric pressure effect, and outside air enters wherein, reduces the degree of vacuum in the vacuum equipment, outside dirt can enter vacuum equipment with air simultaneously, influences quality of product; For other pump classes, can occur leaking because soft packing is loosening.For guaranteeing that sealing effect also must make soft packing be close on the axle, the soft packing serious wear needs often to change, and has increased the workload of safeguarding in addition.
The model utility content
According to above deficiency of the prior art, the technical problems to be solved in the utility model is: provide a kind of pump with mechanical balance type soft packing axle envelope, make to remain suitable tightness in the packing cavity, reduced leakage rate and frequency of maintenance, slow down the filler loss, improve the quality of products.
Pump described in the utility model seals with mechanical balance type soft packing axle, the Seal cage that comprises Gland, surrounded into by packing filling, the liquid filler in the Seal cage, Seal cage is by pipeline bonding pad case, be provided with piston and spring in the Stuffing box, between piston and the Stuffing box inwall seal ring is installed, spring one end connects the upper-end surface of piston, and the other end is fixed on the inner top of Stuffing box.
Because spring has autoregulation, when the pressure of Seal cage external agency during greater than the pressure of Seal cage internal liquid filler, the active force that liquid filler makes progress to piston, the spring compression moves on the piston; When the pressure of Seal cage external agency during less than the pressure of Seal cage internal liquid filler, spring resets under self elastic force effect, piston moves down, therefore, and under spring action, the inside and outside pressure of Seal cage almost is in state of equilibrium, reduced sealing difficulty on the one hand, on the other hand, because pressure reduction is very little, slowed down the liquid filler loss greatly, can be non-maintaining for a long time.
Adjusting screw is installed at described Stuffing box top, and the afterbody of adjusting screw penetrates in the Stuffing box.When the liquid filler in the Seal cage need replenish, only need liquid filler to be injected in the Seal cage by adjusting screw, easy and simple to handle.
Described piston is dish formula piston.
The beneficial effect that the utility model compared with prior art has is:
The utility model is simple and reasonable, autoregulation by spring, make the pressure medium of Seal cage outside identical or close with the liquid filler pressure of Seal cage inside, both reduced sealing difficulty, slowed down the liquid filler loss again, make and safeguard simplification, can be non-maintaining for a long time, all greatly take on a new look on sealing effect or the Economy no matter be; When the liquid filler in the Seal cage need replenish, only need liquid filler to be injected in the Seal cage by adjusting screw, easy and simple to handle.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: 1, Gland; 2, packing filling; 3, liquid filler; 4, pipeline; 5, Stuffing box; 6, piston; 7, seal ring; 8, spring; 9, adjusting screw.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
As shown in Figure 1, pump seals with mechanical balance type soft packing axle, the Seal cage that comprises Gland 1, surrounded into by packing filling 2, the liquid filler 3 in the Seal cage, Seal cage is by pipeline 4 bonding pad casees 5, be provided with piston 6 and spring 8 in the Stuffing box 5, seal ring 7 is installed between piston 6 and Stuffing box 5 inwalls, and spring 8 one ends connect the upper-end surface of piston 6, and the other end is fixed on the inner top of Stuffing box 5.
Wherein, adjusting screw 9 is installed at Stuffing box 5 tops, and the afterbody of adjusting screw 9 penetrates in the Stuffing box 5; Piston 6 is dish formula piston.
When the pressure of Seal cage external agency during greater than the pressure of Seal cage internal liquid filler, the active force that liquid filler 3 makes progress for piston 6, spring 8 compressions move on the piston 6; When the pressure of Seal cage external agency during less than the pressure of Seal cage internal liquid filler, spring 8 resets under self elastic force effect, piston moves down, therefore, and under spring action, the inside and outside pressure of Seal cage almost is in state of equilibrium, reduced sealing difficulty on the one hand, on the other hand, because pressure reduction is very little, slowed down the liquid filler loss greatly, can be non-maintaining for a long time; When the liquid filler 3 in the Seal cage needs to replenish, only need liquid filler to be injected in the Seal cage by adjusting screw 9, easy and simple to handle.
Claims (3)
1. a pump seals with mechanical balance type soft packing axle, the Seal cage that comprises Gland (1), surrounded into by packing filling (2), the liquid filler (3) in the Seal cage, it is characterized in that: Seal cage is by pipeline (4) bonding pad case (5), be provided with piston (6) and spring (8) in the Stuffing box (5), between piston (6) and Stuffing box (5) inwall seal ring (7) is installed, spring (8) one ends connect the upper-end surface of piston (6), and the other end is fixed on the inner top of Stuffing box (5).
2. pump according to claim 1 seals with mechanical balance type soft packing axle, it is characterized in that: adjusting screw (9) is installed at described Stuffing box (5) top, and the afterbody of adjusting screw (9) penetrates in the Stuffing box (5).
3. pump according to claim 1 seals with mechanical balance type soft packing axle, and it is characterized in that: described piston (7) is dish formula piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320116570 CN203189317U (en) | 2013-03-14 | 2013-03-14 | Mechanical balanced type soft stuffing shaft seal for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320116570 CN203189317U (en) | 2013-03-14 | 2013-03-14 | Mechanical balanced type soft stuffing shaft seal for pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189317U true CN203189317U (en) | 2013-09-11 |
Family
ID=49106179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320116570 Expired - Fee Related CN203189317U (en) | 2013-03-14 | 2013-03-14 | Mechanical balanced type soft stuffing shaft seal for pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189317U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165154A (en) * | 2014-08-15 | 2014-11-26 | 苏州通力电气有限公司 | Submerged pump stuffing box capable of displaying amount of residual stuffing |
| CN104165155A (en) * | 2014-08-15 | 2014-11-26 | 苏州通力电气有限公司 | Stuffing box capable of displaying allowance stepwise |
| CN104179717A (en) * | 2014-08-15 | 2014-12-03 | 苏州通力电气有限公司 | Packing box for submersible pump |
| CN104179715A (en) * | 2014-08-15 | 2014-12-03 | 苏州通力电气有限公司 | Stuffing allowance display stuffing box for immersible pump |
| CN104179714A (en) * | 2014-08-15 | 2014-12-03 | 苏州通力电气有限公司 | Substep allowance display stuffing box |
| CN104179716A (en) * | 2014-08-15 | 2014-12-03 | 苏州通力电气有限公司 | Stuffing box for immersible pump |
| CN104179715B (en) * | 2014-08-15 | 2016-11-30 | 苏州通力电气有限公司 | A kind of immersible pump filler surplus shows stuffing-box |
-
2013
- 2013-03-14 CN CN 201320116570 patent/CN203189317U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165154A (en) * | 2014-08-15 | 2014-11-26 | 苏州通力电气有限公司 | Submerged pump stuffing box capable of displaying amount of residual stuffing |
| CN104165155A (en) * | 2014-08-15 | 2014-11-26 | 苏州通力电气有限公司 | Stuffing box capable of displaying allowance stepwise |
| CN104179717A (en) * | 2014-08-15 | 2014-12-03 | 苏州通力电气有限公司 | Packing box for submersible pump |
| CN104179715A (en) * | 2014-08-15 | 2014-12-03 | 苏州通力电气有限公司 | Stuffing allowance display stuffing box for immersible pump |
| CN104179714A (en) * | 2014-08-15 | 2014-12-03 | 苏州通力电气有限公司 | Substep allowance display stuffing box |
| CN104179716A (en) * | 2014-08-15 | 2014-12-03 | 苏州通力电气有限公司 | Stuffing box for immersible pump |
| CN104165154B (en) * | 2014-08-15 | 2016-05-04 | 苏州赛斯德工程设备有限公司 | Immersible pump shows stuffing-box by filler surplus |
| CN104179715B (en) * | 2014-08-15 | 2016-11-30 | 苏州通力电气有限公司 | A kind of immersible pump filler surplus shows stuffing-box |
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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: 20130911 Termination date: 20180314 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |