CN101871469A - Medicinal pump - Google Patents
Medicinal pump Download PDFInfo
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- CN101871469A CN101871469A CN 201010228130 CN201010228130A CN101871469A CN 101871469 A CN101871469 A CN 101871469A CN 201010228130 CN201010228130 CN 201010228130 CN 201010228130 A CN201010228130 A CN 201010228130A CN 101871469 A CN101871469 A CN 101871469A
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Abstract
The invention discloses a medicinal pump and aims to solve the problems of leakage and inconvenience for thorough cleaning and disinfection of the conventional ordinary pumps. For solving the technical problems, the invention adopts the technical solutions, wherein one technical solution comprises that: a combined seal is arranged at each part easy to leak between a front bearing frame and a shaft sleeve in a pump chamber and comprises static sealing devices arranged at each static sealing point, such as a mechanical sealing piece and the like, a floating ring sealing device arranged at a dynamic sealing point, a floating labyrinth sealing device arranged at the tail end of a sealing cover and air sealing devices arranged on a floating ring additional spiral sealing device and the sealing cover; and another technical solution is adopted to increase the volume of the pump chamber and the curving of castings to R10, improve surface roughness, eliminate casting internal defects: an air hole, a sand hole, a crack and an interposition slag, and select a half-open impeller. The medicinal pump has the advantages of high sealing performance, convenient cleaning and disinfection, high effect, suitability for the production of medicinal products and low cost.
Description
Technical field
The invention belongs to the pump class, be specifically related to a kind of medicinal pump.
Background technique
Pump is the machinery of carrying liquid or making the liquid supercharging, and pump is mainly used to carry liquid to comprise water, oil, acid ﹠ alkali liquid, emulsified liquid, suspended emulsion and liquid metal etc., the also liquid that can carry liquid, gaseous mixture and contain suspended solids; Need pump to carry liquid drug in the medicine production procedure.Medicine is the specialities that are related to human body safety, for production, testing apparatus very strict sanitary standard regulation is arranged in the pharmaceutical production working process, can obscure other medicine anything but in the production procedure; Therefore to manufacturing mechanism especially to the anti-leak of the pump housing, to be convenient to cleaning requirement very high.Because the special station of pharmaceuticals industry does not use the pump that mechanical seal is installed, what pharmaceuticals industry was used all the time all is complete dead-tight pump, for example canned motorpump; magnetic drive pump, diaphragm pump etc., but manufacture cost height; maintenance is complicated, is unsuitable for large-scale production, use.The conventional pump that generally uses adopts traditional mechanical seals such as single sealing gasket or seal ring at present, more or less all has certain leakage problem, and be not easy to find slight leakage when pump work; Pump housing inner-cavity structure more complicated, have the dead angle, inconvenience is thoroughly cleaned and sterilization, produces very easily and obscures accident in medicine takes place if be used for medicine.
Summary of the invention
Purpose of the present invention is exactly to disclose a kind of medicinal pump, and existing conventional pump is improved sealing and inside cavity shape, addresses the above problem.
Agent structure of the present invention comprises the pump housing 1, and the cavity 9 of 2 formation of its fastening pump cover, the pump shaft of installing along axis in the cavity 97, the impeller 8 that pump shaft 7 front ends are installed reaches before pump shaft, three groups of spring bearings that install the neutralization back, for solving the problems of the technologies described above, first technical measures of taking are that combination seal is installed at each easy to leak position between front axle bolster 3 and the axle sleeve 4 in cavity 9, comprising the static seal devices of installing at each static seal point such as mechanical sealing element, float-ring sealing device in the dynamic sealing point installation, at the terminal floating type labyrinth gland of installing of sealing gland and at floating ring processing spiral sealing device, and be aided with air seal set; Another technical measures of taking are change pump chamber volume and geometrical shape, select half-opened impeller for use.
That described static seal device is mounted in is that medium may be revealed, the mechanical seal on each section of relative rest, auxiliary seal ring 24 is being set between impeller 8 and the axle sleeve 4, O type circle 23 is being set between floating ring 11 and the axle sleeve 4, O type circle 12 is being set between stationary ring 20 and the sealing gland 16, O type circle 13 is set between sealing gland 16 and pump cover 2; By transmission pin 19, spring 15, throw-out collar 14 stationary ring 20 is stabilized in sealing gland 16.
Described float-ring sealing device is made of floating ring cover 9, floating ring 11 and stop pin, leaves micro-gap between floating ring 11 and the axle sleeve 4, and the face of floating ring 11 end faces and O type circle baffle ring 22 is fitted, and on the floating ring cover 9 stop pin is housed.
Described floating type labyrinth gland mainly is to be made of parts such as nockbushes, offers some belt seal grooves that are arranged in order at nockbush inner chamber and pump shaft facing surfaces, forms gap and cavity between groove and the groove.
Described spiral sealing device is the thread groove that processes rectangular cross section on axle sleeve, and the spiral maze trough that processes on the floating ring is formed the double helix sealing; Draw small opening in the setting of sealing gland rearward end.
Described air seal set is that gas supply line is set on sealing gland, and gas is set to go out under enterprising.
Described cavity increase volume is equivalent to 2 times of conventional pump cavity volume; The increase curving of castings is R10; Improve surface roughness; Eliminate the casting subsurface defect: pore, trachoma, crackle, slag inclusion.
Described half-opened impeller is not have cover plate in suction port one side, and at opposite side cover plate is arranged.
Usefulness of the present invention is to have high sealing performance, is convenient to clean and sterilization; Be applicable to the production medical product; Cost is low.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is the medicinal pump generalized section;
Fig. 2 is the medicinal pump partial cutaway schematic.
Illustration: the pump housing 1, pump cover 2, front axle bolster 3, axle sleeve 4, middle (center) bearing 5, rear bearing 6, pump shaft 7, impeller 8, cavity 9, floating ring cover 10, floating ring 11, O type circle 12, O type circle 13, throw-out collar 14, spring 15, sealing gland 16, spring 17, nockbush 18, transmission pin 19, stationary ring 20, baffle ring 21, O type circle baffle ring 22, O type circle 23, seal ring 24.
Embodiment
The agent structure of medicinal pump as shown in Figure 1 comprises the pump housing 1, is installed in pump cover 2 on the pump housing 1 with double-screw bolt, the impeller 8 that the pump shafts of installing along axis in the cavity 9 of the pump housing 1 and 2 formation of pump cover, the cavity 97, pump shaft 7 front ends are installed and before pump shaft, three groups of spring bearings installing of neutralization back.During work, filling the liquid medicine that is transferred in the cavity 9 of pump case, is a serious drug safety problem if the generation seepage causes medicine to obscure; Be easy to take place the junction plane of the position of seepage at the junction plane of the static relatively parts between front axle bolster 3 and axle sleeve 4, the parts that relatively move; Characteristics at each easy to leak position adopt combination sealing arrangement, promptly adopt multiple sealing means to solve the leakage problems that the common pump housing exists simultaneously.The static seal device that combination sealing arrangement adopts is that mechanical sealing elements such as O type circle, seal ring are installed at each static seal point; The float-ring sealing device that adopts is at dynamic sealing point floating grade for annular seal to be installed; The floating type labyrinth gland that adopts is at the terminal nockbush etc. of installing of sealing gland; The spiral sealing device that adopts is to process spiral chute at floating ring and axle sleeve apparent surface; The air seal set that adopts is that gas supply line is set on sealing gland, and nitrogen is set to go out under enterprising.Another major issue is to wash and sterilize to prevent that medicine from obscuring inside cavity, guarantee drug safety, the technical measures of taking are change cavity volume and geometrical shape, select half-opened impeller for use, thereby improve flow rate of liquid, increase scouring force and wash the dead angle with eliminating.
Concrete technical measures are seen Fig. 2, and the easy to leak position comprises between impeller 8 and the axle sleeve 4, between floating ring 11 and the axle sleeve 4, between stationary ring 20 and the sealing gland 16, between sealing gland 16 and the pump cover 2 and between sealing gland 16 and the axle sleeve 4; Solve the seepage at above-mentioned each position, also leak problem with regard to the thorough soup that solved.
That static seal device is mounted in is that medium may be revealed, the mechanical sealing element on each section of relative rest, auxiliary seal ring 24 is being set between impeller 8 and the axle sleeve 4, O type circle 12 is being set between stationary ring 20 and the sealing gland 16, O type circle 13 is set between sealing gland 16 and pump cover 2; By transmission pin 18, spring 14, throw-out collar 13 stationary ring 19 is tightly combined with floating ring 11.
Floating-ring seal is to belong at dynamic seal apparatus, solve the seepage between floating ring 11 and the rotary axle box 4, a measure is that twice O type circle 23 is set between floating ring 11 and axle sleeve 4, the O type circle 23 of floating ring 11 one side end faces and being close to of O type circle baffle ring 22, the O type circle 23 and axle sleeve 4 side bumpers of opposite side end face are close to; Another measure is to keep certain clearance between floating ring 11 and axle sleeve 4, on floating ring cover 10 stop pin is housed, and floating ring 11 can not be rotated, and under spring 14 and pressure medium effect, slippage is diametrically floated; When axle sleeve 4 rotates with pump shaft 7, form air film from the gas of external world's input at the gap location of axle sleeve 4 and floating ring 11, when being rotated, cause produces the effect of gas wedge power, make and possess certain gas film pressure in the gas film, floating ring 11 can be kept and pump shaft 7 centers " centering " automatically, thereby gap value is reduced greatly, realized sealing effectively the soup seepage.The floating-ring seal advantage is: 1. greatly reduce and leak; 2. stable performance, reliable operation.
Simultaneously on the float-ring sealing device basis, increase spiral seal.So-called spiral seal is the thread groove of processing rectangular cross section on axle sleeve 4 surfaces relative with floating ring 11, the spiral maze trough of processing on relative floating ring 11 internal surfaces, thread groove is to process on the outer surface of spindle type part, the spiral maze trough is meant and processes on the internal surface of pass part, both have opposite direction to constitute the double helix sealing, draw small opening in the setting of sealing gland rearward end; When axle sleeve 4 high speed rotating, static relatively floating ring 11 just is equivalent to spiral seal, even occur leakage, also can its foldback be gone back by spiral chute.This shows that floating ring 11 not only has the floating-ring seal effect to also have the spiral seal effect.
Adopting floating type labyrinth gland between gland 16 and axle sleeve 4 mainly is to be become by parts such as nockbushes.Nockbush 17 around axle sleeve 4 is offered some belt seal grooves that are arranged in order, and the gap and the cavity that form many complications between groove and the groove reduce leakage.Because there are the gap in nockbush 17 and 4 on axle sleeve, no solid contact needn't be lubricated, and be allowed thermal expansion, is adapted at work in the pump housing; Labyrinth seal is reliable, and power consumption is little, easy maintenance, and the life-span is long.
Before pump startup, fill the soup that is transferred in the cavity 9; After the startup, impeller 8 drives high speed rotating by pump shaft 7, and under action of centrifugal force, soup is thrown to outer rim from impeller 8 centers, flows into the excavationg pump outlet with higher pressure, and delivering to needs the place; In the pump work process, wherein some soup is in entering rear chamber between impeller 8 backs and the pump cover 2 from the back of impeller 8 or impeller 8 equalizing orifices, and soup is spread backward.Though rear chamber has adopted the combination seal leakage of blockading, for further improving sealing effect, gas supply line is set on sealing gland, nitrogen is set to enterprisingly go out down, and the nitrogen pressure that keeps feeding is greater than the rear chamber internal pressure; Nitrogen belongs to inert gas and can not react with medicine.
In order can fully to wash and to sterilize inside cavity, way be to increase cavity 1 volume to be equivalent to 2 times of conventional pump cavity volume, and the flow rate of liquid in the pump is improved, and scouring force is increased; The increase curving of castings is R10, improves surface roughness, reduces casting defect, to eliminate the flushing dead angle.Another way is
Select the pump half-opened impeller, promptly do not have cover plate, cover plate is arranged, clean very convenient, thorough at dorsal part in suction port one side.
The above; only be the preferable embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technological scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (8)
1. medicinal pump, agent structure comprises the pump housing (1), the pump cover fastening (2) with it, the pump shaft of installing along axis in the pump chamber (9) (7), the impeller (8) that pump shaft (7) front end is installed reaches the front portion in pump shaft (7), three groups of spring bearings that install at middle part and rear portion, it is characterized in that, combination seal is installed at each easy to leak position between front axle bolster (3) and axle sleeve (4), comprising the static seal devices of installing at each static seal point such as mechanical sealing element, floating ring seal arrangements such as (11) in the dynamic sealing point installation, at the terminal floating type labyrinth gland of installing of sealing gland (16), at the additional spiral sealing device of floating ring (11) and at combination seal rear portion configuration air seal set; Another technical measures of taking are change pump chamber (9) volume and geometrical shape, select half-opened impeller (8) for use.
2. according to the described medicinal pump of claim 1, it is characterized in that, that described static seal device is mounted in is that medium may be revealed, the mechanical seal on each section of relative rest, auxiliary seal ring (24) is being set between impeller (8) and the axle sleeve (4), O type circle (23) is being set between floating ring (11) and the axle sleeve (4), O type circle (12) is being set between stationary ring (20) and the sealing gland (16), between sealing gland (16) and pump cover (2) O type circle (13) is being set; By transmission pin (9) spring (15), throw-out collar (14) stationary ring (20) and floating ring (11) being kept closely moving combines.
3. according to the described medicinal pump of claim 1, it is characterized in that, described float-ring sealing device is made of floating ring cover (10), floating ring (11) and stop pin, leave micro-gap between floating ring (11) and the axle sleeve (4), the face closing mutually of floating ring (11) end face and O type circle baffle ring (22), the floating ring cover is equipped with stop pin on (10).
4. according to the described medicinal pump of claim 1, it is characterized in that, described floating type labyrinth gland mainly is to be made of nockbush parts such as (18), offers some belt seal grooves that are arranged in order at nockbush (18) surface of internal cavity, forms gap and cavity between groove and the groove.
5. according to the described medicinal pump of claim 1, it is characterized in that, described spiral sealing device is the spiral maze trough that processes on floating ring (11) and axle sleeve (4) facing surfaces, processes the thread groove of rectangular cross section on axle sleeve (4) respective surfaces, forms the double helix sealing; Draw small opening in sealing gland (16) rearward end setting.
6. according to the described medicinal pump of claim 1, it is characterized in that described air seal set is on sealing gland (16) gas supply line to be set, gas is set to go out under enterprising.
7. according to the described medicinal pump of claim 1, it is characterized in that described pump chamber (9) volume is equivalent to 2 times of conventional pump cavity volume; The curving of castings is R10; High surface roughness; Reduce the casting subsurface defect: pore, trachoma, crackle and slag inclusion.
8. according to the described medicinal pump of claim 1, it is characterized in that described half-opened impeller (8) is not have cover plate in suction port one side, and at dorsal part cover plate is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010228130 CN101871469A (en) | 2010-07-12 | 2010-07-12 | Medicinal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010228130 CN101871469A (en) | 2010-07-12 | 2010-07-12 | Medicinal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101871469A true CN101871469A (en) | 2010-10-27 |
Family
ID=42996517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010228130 Pending CN101871469A (en) | 2010-07-12 | 2010-07-12 | Medicinal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101871469A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191386A (en) * | 2017-07-19 | 2017-09-22 | 宁波天安汽车零部件有限公司 | A kind of water pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2097919U (en) * | 1991-08-08 | 1992-03-04 | 河北省石家庄水泵厂 | Machinery sealed device of impurity pump |
| DE20316570U1 (en) * | 2002-11-02 | 2004-01-15 | Tuchenhagen Gmbh | Rotary pump sealing ring flush and cool system includes flushing chamber in housing chamber sealed off from pump product by sealing rings and static slide rings. |
| CN200978827Y (en) * | 2006-08-04 | 2007-11-21 | 中国石油天然气股份有限公司 | Mechanical seal for pump |
| CN201027688Y (en) * | 2007-04-02 | 2008-02-27 | 陕西波世特石化机封制造有限公司 | Packaging type welded metal-bellows mechanical seal used for slurry pump in aluminum industry |
| CN201100269Y (en) * | 2007-09-01 | 2008-08-13 | 肇东市华宇泵业有限公司 | A compound mechanical sealing device for pump |
| CN201802678U (en) * | 2010-07-12 | 2011-04-20 | 大连四方佳特流体设备有限公司 | Medicine pump |
-
2010
- 2010-07-12 CN CN 201010228130 patent/CN101871469A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2097919U (en) * | 1991-08-08 | 1992-03-04 | 河北省石家庄水泵厂 | Machinery sealed device of impurity pump |
| DE20316570U1 (en) * | 2002-11-02 | 2004-01-15 | Tuchenhagen Gmbh | Rotary pump sealing ring flush and cool system includes flushing chamber in housing chamber sealed off from pump product by sealing rings and static slide rings. |
| CN200978827Y (en) * | 2006-08-04 | 2007-11-21 | 中国石油天然气股份有限公司 | Mechanical seal for pump |
| CN201027688Y (en) * | 2007-04-02 | 2008-02-27 | 陕西波世特石化机封制造有限公司 | Packaging type welded metal-bellows mechanical seal used for slurry pump in aluminum industry |
| CN201100269Y (en) * | 2007-09-01 | 2008-08-13 | 肇东市华宇泵业有限公司 | A compound mechanical sealing device for pump |
| CN201802678U (en) * | 2010-07-12 | 2011-04-20 | 大连四方佳特流体设备有限公司 | Medicine pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191386A (en) * | 2017-07-19 | 2017-09-22 | 宁波天安汽车零部件有限公司 | A kind of water pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101027 |