CN202108777U - Leak-proof chemical centrifugal pump - Google Patents
Leak-proof chemical centrifugal pump Download PDFInfo
- Publication number
- CN202108777U CN202108777U CN2011201850791U CN201120185079U CN202108777U CN 202108777 U CN202108777 U CN 202108777U CN 2011201850791 U CN2011201850791 U CN 2011201850791U CN 201120185079 U CN201120185079 U CN 201120185079U CN 202108777 U CN202108777 U CN 202108777U
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- CN
- China
- Prior art keywords
- pump
- impeller
- stuffing box
- chemical centrifugal
- centrifugal pump
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- 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.)
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Abstract
The utility model disclose a leak-proof chemical centrifugal pump, which comprises pump blades, an impeller and a stuffing box, wherein a pump chamber is formed in the pump shell; the pump chamber is provided with a liquid inlet and a liquid outlet; the impeller is arranged in the pump chamber by a pump shaft; and the leak-proof chemical centrifugal pump further comprises an auxiliary impeller which is between the stuffing box and the impeller and arranged on the pump shaft by transmission fit. According to the technique of the utility model, the auxiliary impeller is arranged between the stuffing box and the impeller to counteract the contact between certain high-pressure liquid in outlet of the impeller and the stuffing box, thereby reducing the seal load of the stuffing box, prolonging the service life of the stuffing box, reducing the repair frequency, saving raw materials for production and reducing the production cost; simultaneously, the chemical centrifugal pump has good sealing property, reduces occurrence of drop, overflow, dripping and leakage, and contributes to environment protection and low-carbon production requirement.
Description
Technical field
The utility model technology is applied to a kind of chemical machine, is specially chemical centrifugal pump.
Background technique
Centrifugal pump is through centrifugal force the mechanical energy of prime mover to be passed to the liquid of carrying; A kind of dynamic power machine that liquid energy is increased because have that performance range is big, flow is even, simple in structure, running is reliable and easy to maintenance etc., and advantage is used widely in commercial production.
Centrifugal pump comprises main parts size such as impeller, the pump housing, pump shaft, bearing, seal ring and stuffing box.Impeller is the core of centrifugal pump, is used to increase the kinetic energy of liquid and improves the pressure discharge; The pump housing is also claimed pump case, and it plays and supports and seal action; The effect of pump shaft is to borrow coupling to be connected with power engine, is the critical piece that transmits mechanical energy; Stuffing box is mainly by filler, seal cage, and filling tube, Gland, water sealing (sealing water) pipe is formed, and it mainly acts on is in order to seal the space between pump case and the pump shaft, avoids in the pump liquid to reveal, and avoids outside air to enter in the pump simultaneously.
For centrifugal pump, owing to carry different media, the requirement of its sealing also is not quite similar.For example carry clear water, then allow small amount of leakage, and reveal the working life that a small amount of clear water also is beneficial to increases filler in the stuffing box.But,, then be that expectation does not have leakage for the more serious chemical liquid of environmental pollution.And in the actual production process, reach through packing box seal and not reveal, then be a more scabrous technical problem.Not only cause the waste of raw material in the production process, also can cause environmental pollution, and the replacing frequency of filler is also higher, increase and produce and maintenance cost.
Therefore, need improve, make it have the better seal performance, prolong the working life of filler, reduce repair rate, practice thrift raw materials, thereby save production cost, and be beneficial to the protection environment and realize low-carbon (LC) production existing chemical centrifugal pump.
The model utility content
In view of this, the utility model technology provides a kind of anti-leak chemical centrifugal pump, has the better seal performance; Prolong the working life of filler, reduce repair rate, practice thrift raw materials; Thereby save production cost, and be beneficial to the pollution that the protection environment does not receive chemical liquid.
The anti-leak chemical centrifugal pump of the utility model; Comprise pump case, impeller and stuffing box; Form pump chamber in the said pump case, pump chamber is provided with liquid entering hole and liquid outlet, and impeller is arranged in the pump chamber through pump shaft; Also comprise auxiliary impeller, the transmission between stuffing box and impeller of said auxiliary lobe wheel is equipped with on pump shaft.
Further, corresponding auxiliary impeller cavity, said auxiliary impeller cavity and the pump chamber open communication of being provided with auxiliary impeller in the said pump case;
Further, said auxiliary impeller cavity is provided with the backflow runner that is connected in liquid entering hole;
Further, said backflow runner forms in pump case;
Further, the formed centrifugal force of the blade of said auxiliary impeller tilts to pump chamber;
Further, the axial two ends of said auxiliary impeller all have suction structure.
The beneficial effect of the utility model technology is: the anti-leak chemical centrifugal pump of the utility model; Auxiliary impeller is set between stuffing box and impeller; The highly pressurised liquid that can offset the part impeller outlet contacts with stuffing box; Thereby reduce the sealing load of stuffing box, prolong filler working life, reduce repair rate; Make chemical centrifugal pump have the better seal performance, practice thrift raw materials, thereby save production cost, and be beneficial to the pollution that the protection environment does not receive chemical liquid.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Fig. 1 is the structural representation of the utility model.
Embodiment
Fig. 1 is the structural representation of the utility model; As shown in the figure: the anti-leak chemical centrifugal pump of present embodiment, comprise pump case 1, impeller 2 and stuffing box 9, form pump chamber in the said pump case 1; Pump chamber is provided with liquid entering hole 5 and liquid outlet 6; Impeller 2 is arranged in the pump chamber through pump shaft 4, also comprises auxiliary impeller 3, and the transmission between stuffing box 9 and impeller 2 of said auxiliary impeller 3 is equipped with on pump shaft 4; As shown in the figure, pump shaft 4 supports through bearing housing 7.
In the present embodiment, in the said pump case 1 with auxiliary impeller 3 corresponding auxiliary impeller cavity, said auxiliary impeller cavity and the pump chamber open communication of being provided with; Adopt the structure of auxiliary impeller cavity, make auxiliary impeller 3 have installing space since with the pump chamber open communication, be beneficial to liquid got rid of into pump chamber, avoid highly pressurised liquid directly to contact with stuffing box 9.
In the present embodiment, said auxiliary impeller cavity is provided with the backflow runner 8 that is connected in liquid entering hole 5; The liquid that auxiliary impeller 3 is thrown away is got back to liquid entering hole through backflow runner 8, rationally increases the pressure of ingress, avoids sucking and appears the angry bubble of fecund, is beneficial to the cavitation that prevents pump.
In the present embodiment, said backflow runner 8 forms in pump case 1, and is simple and compact for structure, has higher efficient to guarantee centrifugal pump.
In the present embodiment, the formed centrifugal force of the blade of said auxiliary impeller 3 tilts (not expression among the figure) to pump chamber, guarantees that liquid gets rid of into pump chamber to greatest extent, further reduces the load of stuffing box 9.
In the present embodiment, the axial two ends of said auxiliary impeller all have suction structure, form low pressure area being positioned at the stuffing box place, guarantee that further stuffing box avoids the highly pressurised liquid effect.
Need to prove; The foregoing description is only unrestricted in order to the technological scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the utility model technological scheme; And not breaking away from the aim and the scope of the utility model technological scheme, it all should be encompassed in the middle of the claim scope of the utility model technology.
Claims (6)
1. anti-leak chemical centrifugal pump; Comprise pump case, impeller and stuffing box; Form pump chamber in the said pump case, pump chamber is provided with liquid entering hole and liquid outlet, and impeller is arranged in the pump chamber through pump shaft; It is characterized in that: also comprise auxiliary impeller, the transmission between stuffing box and impeller of said auxiliary lobe wheel is equipped with on pump shaft.
2. anti-leak chemical centrifugal pump according to claim 1 is characterized in that: corresponding auxiliary impeller cavity, said auxiliary impeller cavity and the pump chamber open communication of being provided with auxiliary impeller in the said pump case.
3. anti-leak chemical centrifugal pump according to claim 2 is characterized in that: said auxiliary impeller cavity is provided with the backflow runner that is connected in liquid entering hole.
4. anti-leak chemical centrifugal pump according to claim 3 is characterized in that: said backflow runner forms in pump case.
5. anti-leak chemical centrifugal pump according to claim 4 is characterized in that: the formed centrifugal force of the blade of said auxiliary impeller tilts to pump chamber.
6. anti-leak chemical centrifugal pump according to claim 5 is characterized in that: the axial two ends of said auxiliary impeller all have suction structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201850791U CN202108777U (en) | 2011-06-02 | 2011-06-02 | Leak-proof chemical centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201850791U CN202108777U (en) | 2011-06-02 | 2011-06-02 | Leak-proof chemical centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202108777U true CN202108777U (en) | 2012-01-11 |
Family
ID=45434213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201850791U Expired - Fee Related CN202108777U (en) | 2011-06-02 | 2011-06-02 | Leak-proof chemical centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202108777U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223450A (en) * | 2017-12-21 | 2018-06-29 | 江苏双轮泵业机械制造有限公司 | A kind of chemical centrifugal pump of anti-leak |
-
2011
- 2011-06-02 CN CN2011201850791U patent/CN202108777U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223450A (en) * | 2017-12-21 | 2018-06-29 | 江苏双轮泵业机械制造有限公司 | A kind of chemical centrifugal pump of anti-leak |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20140602 |