CN202991466U - Twin-screw glue pump - Google Patents
Twin-screw glue pump Download PDFInfo
- Publication number
- CN202991466U CN202991466U CN 201220227595 CN201220227595U CN202991466U CN 202991466 U CN202991466 U CN 202991466U CN 201220227595 CN201220227595 CN 201220227595 CN 201220227595 U CN201220227595 U CN 201220227595U CN 202991466 U CN202991466 U CN 202991466U
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- China
- Prior art keywords
- screw
- pump
- screw rod
- main shaft
- pump housing
- 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 - Lifetime
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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model discloses a twin-screw glue pump, comprising a pump body and a main shaft, wherein a drive screw is arranged on one end in the pump body, and a driven screw is arranged on the other end, the drive screw and the driven screw are engaged with each other, a transmission gear for providing rotation power is arranged between the drive screw and the driven screw, a seal box and a bearing base fixedly connected on the seal box are arranged on one end of the main shaft, a set of mechanical seal device is arranged between the main shaft and the seal box, and the bearing base is installed on one end of the main shaft by a bearing. Only one set of double mechanical seal on an extension end of the shaft, and the twin-screw glue pump of the utility model has advantages of few leakage point, convenient maintenance, maintenance cost saving, long service life and wide adaptability. The twin-screw pump has a better assembling performance, is not easy to be worn in the using time, and raises the tightness of the glue pump. A non-support and built-in type twin-screw pump is used. Based on the characteristic of the glue with high viscosity, a structure that non-support is arranged in radial direction and the drive and the driven screws are completely suspended in a stator by a medium, is boldly employed.
Description
Technical field
The utility model relates to the glue transfer pump of mechanical field, relates in particular to a kind of two screw pump without the bearing supporting.
Background technique
Two screw pump can be divided into built-in bearing and two kinds of forms of outboard bearing.Structural type middle (center) bearing at built-in bearing is lubricated by transported substance.The two screw pump active chamber of outboard bearing structure separates with bearing.Due to the side clearance that exists between this pump structure and screw rod, it can carry non-lubricated property medium.In addition, adjust synchromesh gear and make screw rod not contact, simultaneously half of output torque passed to driven screw rod.As all screw pumps, outboard bearing formula two screw pump also has suction capacity, and most pump delivery element itself is all that double suction is arranged symmetrically with, and can eliminate axial force, also have very large suction high, the two screw pump series product are divided into single-suction double-screw pump and the large class of double-suction double screw pump two.These series product have special screw molded lines and supporting special construction with it, be widely used in the various industries such as oil, chemical industry, metallurgy, iron and steel, electric power, boats and ships, pharmacy, food, building materials, more than its Applicable media, the conveying scope wide, to use the complexity of operating mode be that other pump series products is incomparable.These characteristics also make this series pump have potential use development prospect.
Yet, the most of external mounted two screw pump that uses of existing present glue transfer pump, there are respectively gear-box and bearing housing in the two ends of pump, complex structure, this is designed with four leak points, needs quadruplet mechanical seal, in view of glue medium characteristics, the quadruplet double mechanical seal is adopted in sealing, and the seal leakage point of pump is many, easily breaks down.And complex structure, the repair cycle is long, and expense is high.And stability is not good, does not often in use reach desirable effect, and impact is worked normally.
The model utility content
The utility model provides a kind of two screw pump without bearing supporting just in order to address the above problem, it is not high that it can effectively solve in prior art sealing, and the leak point is many, assembling is complicated, easily occurs revealing, and maintenance cost is high, overhaul the problems such as frequent, and easy to process, use flexibly.
The technical problem that the utility model requires to solve can be achieved through the following technical solutions:
A kind of two screw pump without the bearing supporting, comprise the pump housing and the interior main shaft of the pump housing is set, one end of the inside of the described pump housing is provided with initiatively screw rod, its the other end is provided with driven screw rod, described active screw rod and driven screw rod are meshed, initiatively be provided with the driving gear that rotating power is provided between screw rod and driven screw rod, an end at main shaft is equipped with the sealing case that connects firmly with the pump housing and the bearing support that connects firmly with sealing case, be provided with a cover mechanical seal device between described main shaft and sealing case, described bearing support is arranged on an end of main shaft by bearing.
In an embodiment of the present utility model, a side of the described pump housing is provided with bonnet, and its opposite side is provided with fore poppet; Described sealing case one side and fore poppet connect firmly, and its opposite side and bearing support connect firmly.
The utility model is provided with inner sleeve on the inwall of the described pump housing, described inner sleeve is with initiatively screw rod and driven screw rod are connected.
In an embodiment of the present utility model, an end of the described pump housing connects pumping hole, and the external diameter of described pumping hole is greater than internal diameter.
owing to having adopted technological scheme as above, the utility model is simple in structure, and is easy to maintenance, and only has a cover mechanical seal, saved maintenance cost, the performance of two screw pump assembling is better, and it is not easy to wear in the time of using, improved the sealing of glue transfer pump, and support the built-in type two screw pump with nothing, the characteristics high according to gelatin viscosity, courageously adopt radially not supporting, principal and subordinate's screw rod depends on medium to be suspended in structure in stator fully, and the axle external part only has a cover double mechanical seal, the leak point is few, maintenance is convenient, the characteristics such as expense is low, with also extremely convenient to maintenance, guaranteed the Security of using, reduce the cost that uses, barrier propterty is good, also saved simultaneously workman's labor intensity, can round-the-clockly use, be easy to promote the use of.
Description of drawings
Fig. 1 is the structural representation of a kind of two screw pump without bearing supporting of the utility model;
Fig. 2 is fundamental diagram of the present utility model.
In figure: the 100-bonnet, 110-is screw rod initiatively, 120-mechanical seal device, 130-bearing, 140-bearing support, 150-sealing case, 160-fore poppet, the driven screw rod of 170-, 180-driving gear, the 190-pump housing, 200-inner sleeve, 210-pumping hole, 220-main shaft.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, a kind of two screw pump without the bearing supporting of the present embodiment, it comprises the pump housing 190 and main shaft 220.the described pump housing 190 inside are hollow structure, one end of the inside of the pump housing 190 is provided with initiatively screw rod 110, its the other end is provided with driven screw rod 170, initiatively screw rod 110 and driven screw rod 170 are meshed, initiatively be provided with the driving gear 180 that rotating power is provided between screw rod 110 and driven screw rod 170, an end at main shaft 220 is equipped with the sealing case 150 that connects firmly with the pump housing 190 and the bearing support 140 that connects firmly with sealing case 150, one cover mechanical seal device 120 is installed between main shaft 220 and sealing case 150, described bearing support 140 is arranged on an end of main shaft 220 by bearing 130.
The two screw pump without the bearing supporting of this enforcement adopts the double-sucking type structure, and initiatively the two ends of screw rod 110 and driven screw rod 170 are in same pressure chamber, and screw axial power is balance voluntarily.
On the general pump housing 190, (except the pump of small flow) all with the in-flow safety valve, has certain protective role when the discharge pressure overrate.
Referring to Fig. 2, it is active screw rod 110 and driven screw rod 170 that two screw rods with left and right hand thread are housed in the pump housing 190, forms between pump housing hole wall and spiral chute and meshes one by one cavity, during bolt rotary, these engagement cavitys produce parallel, reach the purpose of conveying liquid body medium.When bolt rotary, suction chamber one end constantly sucks liquid, and under the squeezing action of two screw rods, liquid constantly is pushed to and advances, until discharge the pump housing, enters output pipeline.
When in use, initiatively screw rod 110 matches with driven screw rod 170 under the drive of driving gear 180, work is carried out in inner sleeve 200 inside at the pump housing, bearing 130 is used for rising fixing at mechanical transmission course and reducing the load friction factor, whole work is also added smooth and easy, guarantee the stability of using.
And mechanical seal device 120 and sealing case 150 guaranteed the sealing of two screw pump, uses performance more stable.In addition, a side of the described pump housing 190 is provided with bonnet 100, and its opposite side is provided with fore poppet 160.Bonnet 100 and fore poppet 160 are convenient to regular maintenance, and convenient maintenance has promoted the flexibility of using.
The utility model is provided with inner sleeve 200 on the inwall of the described pump housing 190, described inner sleeve 200 is with initiatively screw rod 110 and driven screw rod 170 are connected.The outer external part of the utility model main shaft adopts mechanical seal, have the life-span long, leak less, the characteristics of wide adaptability.
Based on above-mentioned, the utility model adopts radially without the structure of bearing supporting, only has a cover mechanical seal; And supporting the built-in type two screw pump with nothing, the characteristics high according to gelatin viscosity courageously adopt radially and do not support, principal and subordinate's screw rod depends on medium to be suspended in structure in stator fully, and the axle external part only has a cover double mechanical seal, and the leak point is few, the characteristics such as maintenance is convenient, and expense is low.
Above demonstration and described basic principle of the present utility model, major character and advantage of the present invention.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and specification just illustrates principle of the present utility model; the utility model also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1. double-screw glue solution pump, comprise the pump housing and the interior main shaft of the pump housing is set, it is characterized in that, one end of the inside of the described pump housing is provided with initiatively screw rod, its the other end is provided with driven screw rod, described active screw rod and driven screw rod are meshed, initiatively be provided with the driving gear that rotating power is provided between screw rod and driven screw rod, an end at main shaft is equipped with the sealing case that connects firmly with the pump housing and the bearing support that connects firmly with sealing case, be provided with a cover mechanical seal device between described main shaft and sealing case, described bearing support is arranged on an end of main shaft by bearing.
2. double-screw glue solution pump as claimed in claim 1 is characterized in that: a side of the described pump housing is provided with bonnet, and its opposite side is provided with fore poppet; Described sealing case one side and fore poppet connect firmly, and its opposite side and bearing support connect firmly.
3. double-screw glue solution pump as claimed in claim 1 or 2 is characterized in that: be provided with inner sleeve above the inwall of the described pump housing, described inner sleeve is with initiatively screw rod and driven screw rod are connected.
4. double-screw glue solution pump as claimed in claim 1 or 2 is characterized in that: an end of the described pump housing connects pumping hole, and the external diameter of described pumping hole is greater than internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220227595 CN202991466U (en) | 2012-05-21 | 2012-05-21 | Twin-screw glue pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220227595 CN202991466U (en) | 2012-05-21 | 2012-05-21 | Twin-screw glue pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202991466U true CN202991466U (en) | 2013-06-12 |
Family
ID=48562652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220227595 Expired - Lifetime CN202991466U (en) | 2012-05-21 | 2012-05-21 | Twin-screw glue pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202991466U (en) |
-
2012
- 2012-05-21 CN CN 201220227595 patent/CN202991466U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |