CN205225836U - Roots blower axle head mechanical seal system - Google Patents
Roots blower axle head mechanical seal system Download PDFInfo
- Publication number
- CN205225836U CN205225836U CN201520999840.3U CN201520999840U CN205225836U CN 205225836 U CN205225836 U CN 205225836U CN 201520999840 U CN201520999840 U CN 201520999840U CN 205225836 U CN205225836 U CN 205225836U
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- transmission shaft
- cam
- fuel tank
- plunger pump
- mechanical sealing
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Abstract
The utility model relates to a roots blower axle head mechanical seal system, including oil tank, transmission shaft, axle head mechanical seal subassembly, drive gear, a lock nut, axle head mechanical seal subassembly encloses synthetic sealing load chamber including gyration cover, seal chamber, sound ring mechanical seal subassembly and end cover between and the seal chamber, placed the plunger pump at the oil tank internal fixation, and the oil -out of plunger pump passes through the above -mentioned sealing load chamber of duct connections, still be equipped with the control assembly of control plunger pump intermittent type formula fuel feeding in the oil tank, control assembly installs on the transmission shaft to rotate along with the transmission shaft, the draining hole that still is equipped with on the inboard seal chamber of oil tank, draining jogged joint relief valve, oil pipe is connected back to the relief valve. Compare consumption, the low cost who does not increase other energy with current mechanical seal structure, sealed effect is showing to do not need the customer provide plus the water source, do not need on -the -spot installation, and use safe and reliable under the airtight state in whole fuel feeding process.
Description
Technical field
The utility model belongs to roots blower shaft end seal technical field, particularly relates to a kind of Roots blower machine shaft end mechanical sealing system.
Background technique
When Roots blower is for carrying toxic and harmful, often consider the problem of Leakage Gas befouling environment, so hermetic seal generally adopts the structure of mechanical seal.Because mechanical seal is applied between dynamic and static ring by the pressure of sealing medium, thus reach the effect of sealing, thus use the on-the-spot water source that must provide convenience or special petrol station is installed, guarantee sealing effect, which adds the cost of investment of client, and the also corresponding raising of later stage user cost.
Summary of the invention
The utility model provides a kind of structure simply, not need in-site installation for solving in known technology the technical problem that exists, does not need to join high-pressure water or petrol station outward, the Roots blower machine shaft end mechanical sealing system of safe and reliable, long service life.
The technological scheme that the utility model is taked for the technical problem existed in solution known technology is:
A kind of Roots blower machine shaft end mechanical sealing system, comprise fuel tank, the transmission shaft in fuel tank is arranged on by spring bearing, axle head mechanical sealing assembly is installed between transmission shaft and fuel tank, fuel tank intermediate solid drive shaft is provided with driving gear, being provided with thread section on the transmission shaft of axle head mechanical sealing assembly side, thread section has the first locking nut be screwed with for locking driving gear; Described axle head mechanical sealing assembly comprises the revolving sleeve be sleeved on transmission shaft, be sleeved on the seal chamber on transmission shaft, be arranged on the dynamic and static ring mechanical sealing assembly in seal chamber and be arranged on the end cover that seal chamber outer end is fixedly connected with fuel tank, sealing load chamber is enclosed between described end cover and seal chamber, it is characterized in that: be placed with plunger pump at fuel tank internal fixtion, the oil outlet of described plunger pump connects above-mentioned sealing load chamber by delivery pipe; The control unit controlling plunger pump intermittent type fuel feeding is also provided with in fuel tank; Described control unit is arranged on transmission shaft, and rotates with transmission shaft; The inner seal cavity of fuel tank is also provided with the oil leak hole be communicated with sealing load chamber, and described oil leak hole connects Decompression valves; Described Decompression valves connects return tube, and described return tube extends in fuel tank.
The utility model can also adopt following technical measures:
Described control unit comprises cam, and described cam is fixedly mounted on transmission shaft, rotates with transmission shaft, and namely the rotating central hole of cam is sleeved on transmission shaft, and is fixed by fastening piece; The central alignment of the central position of the external frame of described cam and the plunger rod of above-mentioned plunger pump, drives plunger pump to do reciprocating rotating motion.
The rotating central hole of described cam is screw, and direct spiral shell is contained on the thread section of transmission shaft, is also fitted with the second locking nut in the outside of cam.
The surface of contact of the bi-side of described cam, the first locking nut and the second locking nut and cam is provided with rubbing surface.
The rotating central hole of described cam is unthreaded hole, cam is provided with fastening screw trip bolt along unthreaded hole radial direction, in unthreaded hole, is fitted with swivel nut, and the outer surface of described swivel nut is provided with slew constrained; Described swivel nut spiral shell is contained on the thread section of transmission shaft, is fitted with the second locking nut in the outside of cam.
The advantage that the utility model has and good effect are: because the utility model adopts technique scheme, namely when former roots blower structure is constant, only on transmission shaft, increase a cam, in fuel tank, plunger pump is installed, by cam transmission with the rotation of transmission shaft, and then plunger pump is moved reciprocatingly according to its characteristics of motion, thus obtain sealing load in sealing load chamber, finally realize sealing effect; This kind of sealing means does not increase the consumption of other energy, and with low cost compared with the additional oil circuit of existing machinery sealing configuration and petrol station, Be very effective, and the water source not needing client to provide additional, do not need in-site installation; And use under whole Fuel injection system is air-tight state, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment 1 structural representation;
Fig. 2 is A-A sectional view in Fig. 1;
Fig. 3 is the utility model embodiment 2 structural representation;
Fig. 4 is B-B sectional view in Fig. 3.
In figure: 1, fuel tank; 2, spring bearing; 3, transmission shaft; 3-1, thread section; 4, fuel tank power intake; 5, axle head mechanical sealing assembly; 5-1, revolving sleeve; 5-2, seal chamber; 5-3, mechanical sealing assembly; 5-4, end cover; 6, driving gear; 7, the first locking nut; 8, plunger pump; 8-1, plunger rod; 9, delivery pipe; 10, control unit; 10-1, cam; 11, Decompression valves; 12, return tube; 13, the second locking nut; 14, fastening screw trip bolt; 15, swivel nut; 15-1, slew constrained; 16, rubbing surface.
Embodiment
For summary of the invention of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Embodiment 1, refer to Fig. 1 and Fig. 2, a kind of Roots blower machine shaft end mechanical sealing system, comprise fuel tank 1, be arranged on the transmission shaft 3 in fuel tank by spring bearing 2, axle head mechanical sealing assembly 5 is installed between transmission shaft 3 and fuel tank power intake 4, fuel tank 1 intermediate solid drive shaft 3 is provided with driving gear 6, being provided with thread section 3-1 on axle head mechanical sealing assembly side transmission shaft 3, thread section has the first locking nut 7 be screwed with for locking driving gear; Described axle head mechanical sealing assembly 5 comprises the revolving sleeve 5-1 be sleeved on transmission shaft, be sleeved on the seal chamber 5-2 on transmission shaft, be arranged on the dynamic and static ring mechanical sealing assembly 5-3 in seal chamber and be arranged on the end cover 5-4 that seal chamber outer end is fixedly connected with fuel tank, sealing load chamber 5-5 is enclosed between described end cover and seal chamber, be placed with plunger pump 8 at fuel tank 1 internal fixtion, the oil outlet of described plunger pump 8 connects above-mentioned sealing load chamber 5-5 by delivery pipe 9; The control unit 10 controlling plunger pump intermittent type fuel feeding is also provided with in fuel tank 1; Described control unit 10 is arranged on transmission shaft, and rotates with transmission shaft; The inner seal cavity 5-1 of fuel tank is also provided with the oil leak hole 5-10 be communicated with sealing load chamber 5-5, and described oil leak hole connects Decompression valves 11; Described Decompression valves connects return tube 12, and described return tube extends in fuel tank; A sealing medium circulation loop is just defined like this in fuel tank.
The above-mentioned control unit 10 of the present embodiment comprises cam 10-1, and described cam is fixedly mounted on transmission shaft 3, the central alignment of the central position of the external frame of described cam 10-1 and the plunger rod 8-1 of above-mentioned plunger pump 8, drives plunger pump to do reciprocating rotating motion; The rotating central hole of described cam 10-1 is sleeved on transmission shaft 3, and rotates with transmission shaft 3; In the present embodiment, the rotating central hole of described cam is screw, direct spiral shell is contained on the thread section 3-1 of transmission shaft 3, the second locking nut 13 is also fitted with in the outside of cam 3, the object of the second locking nut 13 is that placing cam loosens with the rotation of transmission shaft, and then cause and depart from the plunger rod of plunger pump, cause the damage of plunger rod and the axle head mechanical seal of sealing to lose efficacy.
Technique scheme, when former roots blower structure is constant, an equipped cam on transmission shaft, in fuel tank, plunger pump is installed, by cam transmission with the rotation of transmission shaft, and then plunger pump is moved reciprocatingly according to its characteristics of motion, thus obtain sealing load in sealing load chamber, finally realize sealing effect.
Do not loosen to improve after cam is clamped, the surface of contact of the bi-side of described cam, the first locking nut and the second locking nut and cam is provided with rubbing surface 16.
Embodiment 2, refer to Fig. 3 and Fig. 4, and the rotating central hole of cam directly can not be sleeved on the thread section of transmission shaft as unthreaded hole herein, otherwise will destroy thread section along with the rotation of transmission shaft, and then cause later stage driving gear to dismantle the problem of not getting off; The all right following feature of the present embodiment for this reason, the rotating central hole of described cam 3 is unthreaded hole, and cam is provided with fastening screw trip bolt 14 along unthreaded hole radial direction, is fitted with swivel nut 15 in unthreaded hole, and the outer surface of described swivel nut is provided with slew constrained 15-1; Described swivel nut spiral shell is contained on the thread section of transmission shaft 3, is fitted with the second locking nut 13 in the outside of cam.
The utility model does not increase the consumption of other energy in sum, and with low cost compared with the additional oil circuit of existing machinery sealing configuration and petrol station, Be very effective, and the water source not needing client to provide additional, do not need in-site installation; And use under whole Fuel injection system is air-tight state, safe and reliable.
The above is only to preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, every according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (5)
1. a Roots blower machine shaft end mechanical sealing system, comprise fuel tank, the transmission shaft in fuel tank is arranged on by spring bearing, axle head mechanical sealing assembly is installed between transmission shaft and fuel tank, fuel tank intermediate solid drive shaft is provided with driving gear, being provided with thread section on the transmission shaft of axle head mechanical sealing assembly side, thread section has the first locking nut be screwed with for locking driving gear; Described axle head mechanical sealing assembly comprises the revolving sleeve be sleeved on transmission shaft, be sleeved on the seal chamber on transmission shaft, be arranged on the dynamic and static ring mechanical sealing assembly in seal chamber and be arranged on the end cover that seal chamber outer end is fixedly connected with fuel tank, sealing load chamber is enclosed between described end cover and seal chamber, it is characterized in that: be placed with plunger pump at fuel tank internal fixtion, the oil outlet of described plunger pump connects above-mentioned sealing load chamber by delivery pipe; The control unit controlling plunger pump intermittent type fuel feeding is also provided with in fuel tank; Described control unit is arranged on transmission shaft, and rotates with transmission shaft; The inner seal cavity of fuel tank is also provided with the oil leak hole be communicated with sealing load chamber, and described oil leak hole connects Decompression valves; Described Decompression valves connects return tube, and described return tube extends in fuel tank.
2. Roots blower machine shaft end mechanical sealing system according to claim 1, it is characterized in that: described control unit comprises cam, described cam is fixedly mounted on transmission shaft, rotates with transmission shaft, namely the rotating central hole of cam is sleeved on transmission shaft, and is fixed by fastening piece; The central alignment of the central position of the external frame of described cam and the plunger rod of above-mentioned plunger pump, drives plunger pump to do reciprocating rotating motion.
3. Roots blower machine shaft end mechanical sealing system according to claim 2, is characterized in that: the rotating central hole of described cam is screw, and direct spiral shell is contained on the thread section of transmission shaft, is also fitted with the second locking nut in the outside of cam.
4. Roots blower machine shaft end mechanical sealing system according to claim 3, is characterized in that: the surface of contact of the bi-side of described cam, the first locking nut and the second locking nut and cam is provided with rubbing surface.
5. Roots blower machine shaft end mechanical sealing system according to claim 2, it is characterized in that: the rotating central hole of described cam is unthreaded hole, cam is provided with fastening screw trip bolt along unthreaded hole radial direction, in unthreaded hole, is fitted with swivel nut, the outer surface of described swivel nut is provided with slew constrained; Described swivel nut spiral shell is contained on the thread section of transmission shaft, is fitted with the second locking nut in the outside of cam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520999840.3U CN205225836U (en) | 2015-12-04 | 2015-12-04 | Roots blower axle head mechanical seal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520999840.3U CN205225836U (en) | 2015-12-04 | 2015-12-04 | Roots blower axle head mechanical seal system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205225836U true CN205225836U (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520999840.3U Active CN205225836U (en) | 2015-12-04 | 2015-12-04 | Roots blower axle head mechanical seal system |
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| Country | Link |
|---|---|
| CN (1) | CN205225836U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298906A (en) * | 2015-12-04 | 2016-02-03 | 天津市天鼓机械制造有限公司 | Shaft end mechanical sealing system for Roots blower |
-
2015
- 2015-12-04 CN CN201520999840.3U patent/CN205225836U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298906A (en) * | 2015-12-04 | 2016-02-03 | 天津市天鼓机械制造有限公司 | Shaft end mechanical sealing system for Roots blower |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |