CN209041177U - A kind of pump case - Google Patents
A kind of pump case Download PDFInfo
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- CN209041177U CN209041177U CN201821688389.3U CN201821688389U CN209041177U CN 209041177 U CN209041177 U CN 209041177U CN 201821688389 U CN201821688389 U CN 201821688389U CN 209041177 U CN209041177 U CN 209041177U
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- pump case
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Abstract
The utility model relates to pump technical fields, disclose a kind of pump case, and pump case includes pump case metallic framework and non-metallic inner liner, and non-metallic inner liner is coated and fixed on the inside of pump case metallic framework；Pump case metallic framework includes the first skeleton and the second skeleton；The junction of first skeleton and the second skeleton is equipped with groove；Aperture is offered on the outer surface of first skeleton；The center of first skeleton and the second skeleton is respectively provided with the identical circular through hole of diameter；The side wall of circular through hole is equipped with First Transition structure and the second transition structure on first skeleton and on the second skeleton；Pass through groove, the setting of transition structure, greatly improve the tensile strength between nonmetallic materials liner layer and pump case metallic framework, and the defects of ensuring blanking smooth and abundant exhaust when liner layer material is poured, avoiding the peeling, delamination, cracking, stomata of liner layer material.
Description
Technical field
The utility model relates to pump technical fields, and in particular to a kind of pump case.
Background technique
Pump is common mechanical equipment in industrial production, can be used to trandfer fluid or for fluid pressurized, fluid mainly includes
Water, oil, soda acid liquid, lotion, solids suspension etc., these fluids usually have certain corrosivity, and when flowing
Flow velocity it is very fast, the pump housing can be corroded and biggish scouring force is generated to the pump housing, damage the pump housing, pump case can be used to that the pump housing is protected to reduce
Damage.
Pump case divides two major classes from material currently on the market, and one kind is metal casting part, it is another kind of be nonmetallic materials and
Metal casting pump case composite members.The wherein metal pump shell structure design in nonmetallic materials liner composite members, only by metal pump case
The thickness for needing to do non-metallic inner liner, which reserves, to be come, and is then filled by nonmetallic materials liner to reach the size of design；It is logical
Normal metal pump case skeleton structure design tensile strength when doing nonmetallic materials liner is inadequate, and client is in use, non-metallic inner liner
Layer is easy to happen local shedding, cracking and edge delamination, so as to shorten the service life of the product.In addition, non-metallic inner liner material
Not enough and when liner vent design is unreasonable in metal pump case skeleton structure with metal pump case tensile strength for material, and non-gold is doing in producer
When belonging to material liner, nonmetallic materials inner lining surface can often occur and generate a large amount of bubbles, cracking and part delamination, to need
Secondary operation handles these abnormal qualities, leads to that manufacturing cost rises and the production cycle extends, to reduce the market of product
Competitiveness.
Chinese utility model patent (CN207761932, a kind of anticorrosive anti-wear plastic lining pump pump case) discloses a kind of tool
Internally plastic coated pump shell, including plastic lining pump case, inside groove and the pump housing are done, the appearance wall of the pump housing is cased with symmetrical left modeling
Material lining pump case and right plastic lining pump case, the surface of pump case are fixed with corrosion resistant protective shell, and pump case is internally provided with rubber
Rubber mat can avoid plastic lining and contact with the direct of the pump housing, improves the wearability of pump case.The pump case plastic lining of the utility model
It is contacted with rubber pad, the pump housing will not be contacted with plastic lining, and wearability relies primarily on rubber pad realization, and the corrosion resistant outside pump case is protected
Protective case then improves the corrosion resistance of pump case, and be between each layer by the metals connection type such as bolt, nut, metal material
Bolt and nut is not corrosion-resistant, on the one hand can reduce the bonding strength between each layer of pump case, can also shorten the service life of pump case.
Utility model content
The utility model problem to be addressed is how existing pump case is wear-resisting and corrosion resistance is not strong, non-metallic inner liner material with
The metal framework structure combination defective tightness of pump case, easily falls off from pump case metallic framework, the skills such as cause pump case service life short
Art problem.
In order to solve the above-mentioned technical problem, the utility model discloses a kind of pump case and preparation method thereof, wherein pump case packet
Pump case metallic framework and non-metallic inner liner are included, non-metallic inner liner is coated and fixed on the inside of pump case metallic framework；In the work of pump
In the process, the transmission fluid of pump is only contacted with non-metallic inner liner, and non-metallic inner liner material has stronger wear-resisting and corrosion resistance,
The abrasion and corrosion resistance of pump cover can be improved.
The pump case metallic framework includes the first skeleton and the second skeleton；First skeleton and the second skeleton are almost symmetry knot
Structure is equipped with groove on the inside of the junction of the first skeleton and the second skeleton；
The outer surface of first skeleton is equipped with aperture；
The center of first skeleton and the second skeleton is respectively provided with a circular through hole, the diameter phase of two circular through holes
Together；Space in the through-hole forms cylindrical hole, inside setting impeller；Pump is separately connected on the outside of two circular through holes
Front pump cover and rear pump cover, and pump configuration is together formed with the pedestal of pump and other connectors.
The side wall of circular through hole is equipped with First Transition structure on first skeleton；
The side wall of circular through hole is equipped with the second transition structure on second skeleton；
The non-metallic inner liner is fully populated in groove, First Transition structure and the second transition structure, it is possible to increase non-gold
The contact area for belonging to liner and pump case metallic framework improves the binding force of the two.
Further, Liang≤1 Shuo of the groove.Groove can be regularly arranged in the first skeleton and the connection of the second skeleton
The multiple circular grooves parallel or perpendicular to circular through hole for locating inside, are also possible to be distributed in the first skeleton with form of annular rings
One on the inside of structure and the second skeleton structure junction is parallel to the circle of circular through hole using circular through hole central point as the center of circle
Annular groove.
Further, the groove is interior big outer small structure, i.e. the bottom width of groove is greater than opening face width.In this way may be used
It is embedded in non-metallic inner liner material more in pump case metallic framework, increases the difficulty that external force involves removing non-metallic inner liner material
Degree, further increases the bond strength of non-metallic inner liner Yu pump case metallic framework.
Further, the First Transition structure includes step structure and bulge-structure A；Its relief structure A is located at the
At the inner surface outer edge of one skeleton, step structure is distributed in the side of circular through hole on the first skeleton with bulge-structure A side by side
On wall, step structure is connected with bulge-structure A by round and smooth fillet surface.Turning in its relief structure A and step structure
Angular position is both designed as fillet, and round and smooth fillet surface and fillet design can avoid stress and concentrate, it is ensured that pump case metallic framework
Intensity.
Further, second transition structure includes bulge-structure B and C, and bulge-structure B is located at the inside of the second skeleton
At the outer edge of surface, bulge-structure C and bulge-structure B are distributed in side by side on the second skeleton on the side wall of circular through hole, protrusion knot
It is connected between structure B and C by rounding off curved surface.Turning position in bulge-structure B and C is both designed as fillet, round and smooth mistake
Crossing curved surface and fillet design can avoid stress and concentrates, it is ensured that the intensity of pump case metallic framework.
The First Transition structure and the second transition structure are located on the lateral wall of pump case metallic framework central through hole, and
Edge of the pump case metallic framework in conjunction with non-metallic inner liner material is easy to produce peeling, delamination, cracking and stomata etc. herein and lacks
It falls into, design transition structure is capable of increasing the contact area of pump case metallic framework Yu non-metallic inner liner material, improves the combination of the two
Intensity plays booster action, reduces drawbacks described above.
Further, the material of the pump case metallic framework is one or more of stainless steel, carbon steel or spheroidal graphite cast-iron
Mixture.
Further, the material component of the non-metallic inner liner includes silicon carbide ceramics and phenolic resin.Non-metallic inner liner
Material component includes silicon carbide ceramics and phenolic resin, and silicon carbide ceramics not only has an excellent mechanical property: high-flexural strength,
High rigidity, and there is excellent anti-oxidant, corrosion-resistant and wear-resisting property, still there is good mechanical property under high-temperature condition.
Phenolic resin is a kind of important chemical binder, can be well compatible with a variety of organic or inorganic fillers, thermoplastic phenolic aldehyde
Energy secure bond is not easy to be washed away by medium in metallic framework layer inner surface after resin heating melting.
The preparation method of shell, includes the following steps: in the utility model
(1) it using the method for machining, is opened up in the first skeleton of pump case metallic framework and the second skeleton junction recessed
Slot opens up First Transition structure on the first skeleton circular through hole side wall, opens up on the side wall of the second skeleton circular through hole
Two transition structures；
(2) surface sand-blasting process is carried out to pump case metallic framework, is then cleaned；
(3) pump case metal framework structure layer is put into Vacuum Heat running gate system；
(4) non-metallic inner liner layer material is uniformly mixed, Vacuum Heat running gate system is then added；
(5) carrying out heat treatment to non-metallic inner liner layer material makes its melting, and the non-metallic inner liner layer material of melting is led to
The inside that open-vacuum is cast in pump case metal framework structure is crossed, pump case is obtained after cooling and shaping.
Pump case metallic framework is designed according to the specific structure of pump case and application places, to having opened up groove, First Transition
The pump case metallic framework of structure and the second transition structure structure carries out surface sand-blasting process, makes its surface roughness Ra=1.6-
3.5, preferably 2.5, under the roughness, pump case metallic framework surface has a subtle out-of-flatness, micro- to see cutter trade, more it is enough more
Well in conjunction with the melting non-metallic material bed of material, the bond strength of pump case metallic framework layer and non-metallic inner liner layer is optimal.
The fusing point of thermoplastic phenolic resin is at 350 DEG C or so, and the fusing point of silicon carbide is at 1000 DEG C or more, heating nonmetal
Liner layer raw material, when temperature reaches 350 DEG C or more, phenolic resin fusing, silicon carbide is evenly distributed in phenolic resin melt,
In vacuum pouring system, melt is filled and is coated on the inside of metallic framework layer, and under vacuum, melt fills first
Groove and transition structure, then coated, when reaching suitable thickness, stop casting, cooled down, phenolic resin is cooled and shaped
Just it is coated on the internal layer surface of pump case metallic framework layer securely jointly with silicon carbide afterwards.The excellent adhesive property of phenolic resin makes
The non-metallic material bed of material and pump case metallic framework are firmly combined, the high-intensitive intensity for increasing pump case again of silicon carbide.
In vacuum pouring non-metallic inner liner material, be opened in the first skeleton outer surface aperture may insure it is nonmetallic
Material blanking is smooth, and exhaust sufficiently, it is gentle to reduce the peeling, delamination of non-metallic inner liner material, cracking on the inside of pump case metallic framework
The defects of hole；In addition, groove of the design in the first skeleton and the second skeleton junction also has certain scavenging action, make non-gold
It is more smooth to belong to inner lining material blanking in casting process, is vented more abundant, reduction drawbacks described above.
Numerical control processing detection, ultrasonic inspection and the full-scale detection of three coordinates are carried out to the pump case obtained after cooling and shaping
Afterwards, size and performance pump case product up to standard are qualified products.
Pump case at work, the generation external force such as can wash away, rub because of transmission fluid media (medium), external force can involve non-gold outward
Belong to lining material, to destroy the tensile strength between liner layer and pump case metallic framework.On the metal framework structure of pump case
Groove structure is designed, when doing nonmetallic materials liner on pump case, nonmetallic materials can fill up groove first, non-in groove
Metal material can firmly grasp groove inner wall, and when being involved by external force, nonmetallic materials can be adhere strongly to pump metallic framework
Inner surface increases tensile strength；After filling full nonmetallic materials liner in the groove simultaneously, scavenging action can also be played,
Reduce the quality defects such as stomata and the cracking of non-metallic inner liner layer, thus improve nonmetallic materials liner layer and shell metallic framework it
Between adhesive strength.
When in view of doing nonmetallic materials liner on pump case, end face and edge are easy to produce peeling, delamination, cracking, stomata
The defects of, transition structure is additionally provided on the edge of pump case metallic framework and non-metallic inner liner material, it can be ensured that blanking
It is smooth, it is sufficiently vented, strengthens the binding force between end face and edge nonmetallic materials liner and metallic framework, avoid
State defect.
In addition, being additionally provided with aperture on pump case metallic framework, it can be ensured that nonmetallic materials blanking is smooth, and exhaust is abundant.
Thus the defects of reducing the peeling, delamination, cracking, stomata of pump case main body non-metallic inner liner layer.
Compared with prior art, the pump case and preparation method thereof of the utility model has the advantage that
1, groove is set on pump case metallic framework, increases the tensile strength between liner layer and metallic framework.
2, pump case metallic framework is equipped with transition structure with the contact edge of non-metallic inner liner material, both increases edge
Binding force between liner layer and metallic framework, and can realize that blanking is smooth, abundant exhaust, avoid peeling, delamination, cracking,
The defects of stomata.
3, the open-celled structure design on pump case metallic framework ensure that blanking is smooth and exhaust is abundant, reduce peeling, take off
The defects of layer, cracking, stomata.
4, the pump case intensity that the utility model obtains is high, and corrosion resistance and good, service life greatly prolongs.
Detailed description of the invention:
Fig. 1: the three-dimensional structure diagram of pump case metal framework structure.
Fig. 2: the main view of pump case metal framework structure.
Fig. 3: the cross-sectional view along the direction A-A.
Fig. 4: the partial enlarged view of groove structure.
Fig. 5: the partial enlarged view of First Transition structure.
The partial enlarged view of Fig. 6: the second transition structure.
Description of symbols: 1: the first skeleton；2: the second skeletons；3: groove；11: aperture；12: First Transition structure；21:
Second transition structure；121: step structure, 122: bulge-structure A；211: bulge-structure B；212: bulge-structure C.
Specific embodiment:
With reference to the accompanying drawing, it is described in detail by specific embodiment, illustrates the technical solution of the utility model.
In the present embodiment, in order to describe conveniently, non-metallic inner liner, but a part as pump case is omitted here, it is non-
Metal lining material is fully populated in the groove on the inside of pump case metallic framework and first and second transition structure, and is coated and pumped
The inside of shell metallic framework.
Pump case metallic framework layer is made by corrosion resistant stainless steel material through die cast and by finishing；In nonmetallic
Lining material is the mixture of phenolic resin and silicon carbide ceramics, and wherein the mass ratio of phenolic resin and silicon carbide ceramics is 1:0.5-
2。
As shown in Figure 1, pump case metallic framework includes the first skeleton 1 and the second skeleton 2 and the first skeleton 1 and the second bone
The groove 3 of 2 junction of frame；The section that first skeleton 1 and the second skeleton 2 are in contact is completely coincident each other, and pump case metallic framework is in
Hollow structure；Pump case metal framework structure is integrally rounded, in order to be placed in plane, in pump case metallic framework
Bottom is equipped with pedestal.
As shown in Fig. 2, front is the view of the first skeleton 1, in conjunction with Fig. 1, it is uniformly distributed in the outer surface of the first skeleton 1
7 apertures 11, be equipped at the center of the first skeleton 1 be arranged at a big circular through hole, with 2 center of the second skeleton it is logical
Hole aperture is identical, and the internal diameter of aperture 11 is 1/5 of big circular through hole internal diameter at pump case metallic framework center.
As shown in figure 3, the junction of the first skeleton 1 and the second skeleton 2 is equipped with groove 3, Fig. 4 is the partial enlargement of groove 3
Figure, groove 3 are in circular ring shape, are parallel to circular through hole, and surround the first skeleton 1 and second by the center of circle of the central point of circular through hole
The bottom width of the junction medial surface of skeleton 2 one week, groove 3 is greater than opening face width, is in interior big outer small structure, groove 3
Depth is 0.8 times of non-metal lining material filling thickness, and the corner of groove 3 is fillet design, and the radius of fillet is
0.16 times of non-metallic inner liner material layer filling thickness.It is equipped on the big round through-hole side wall being arranged at 1 center of the first skeleton
First Transition structure 12, the big round through-hole side wall being arranged at 2 center of the second skeleton are equipped with the second transition structure 21.
Fig. 5 is the partial enlarged view of First Transition structure 12, including step structure 121 and bulge-structure A122, protrusion knot
Structure A122 is located at the inner surface outer edge of the first skeleton 1, and step structure 121 is located at the lower section of bulge-structure A122, step
Structure 121 is in two-stage step structure, and the bottom of step structure 121 is non-metallic inner liner material away from the distance of big round through-hole side wall
Layer 0.5 times of filling thickness, the turning position in step structure 121 and bulge-structure A122 are both designed as fillet, and the half of fillet
Diameter is 0.16 times of non-metallic inner liner layer filling thickness.
Fig. 6 is the partial enlarged view of the second transition structure 21, including bulge-structure B211 and bulge-structure C212, protrusion knot
Structure C212 is located at the top of bulge-structure B211, and the depth of groove formed among two bulge-structures B and C is non-metallic inner liner material
0.5 times of bed of material filling thickness, the turning position in bulge-structure B211 and C212 are both designed as fillet, the radius right and wrong of fillet
0.16 times of metal inner lining layer filling thickness.
The preparation method of the pump case includes the following steps:
(1) it using the method for machining, is opened up in the first skeleton 1 of pump case metallic framework and 2 junction of the second skeleton
Groove 3 opens up First Transition structure 11 on the big round through-hole side wall of the first skeleton 1, in the side wall of 2 circular through hole of the second skeleton
On open up the second transition structure 21；
(2) surface sand-blasting process is carried out to pump case metallic framework, makes its surface roughness Ra=2.5, is then cleaned；
(3) pump case metal framework structure layer and casting mold are assembled, is put into Vacuum Heat running gate system；
(4) mixture of phenolic resin and silicon carbide ceramics is uniformly mixed, Vacuum Heat running gate system is then added；
(5) carrying out heating to the mixture of phenolic resin and silicon carbide ceramics melts phenolic resin, by the mixing of melting
Object material vacuum is cast in the inside of pump case metal framework structure layer, and pump case is obtained after cooling and shaping.
(6) to after casting pump case carry out numerical control processing detection, ultrasonic inspection and the full-scale detection of three coordinates, size and
Performance pump case up to standard is qualified products.
Before using the design, designed according to common pump shell structure currently on the market, i.e., directly by non-metallic inner liner
Layer is cast on the smooth medial surface of pump case metal framework structure layer, produces and test ten products, in nonmetallic materials
The tensile strength of lining and pump case metallic framework is 10-12Mpa.The defects of cracking at pump case end face and edge, delamination, stomata, rate was big
In 90%.
After the design, ten products are produced and tested, the tension of nonmetallic materials liner and metallic framework is strong
Degree is greater than 20Mpa.The defects of cracking at pump case end face and edge, delamination, stomata, rate was less than 5%.
The above is only the preferred embodiment of the present invention, is not limited to utility model, all practical new at this
For the design concept product of type without within obvious, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (7)
1. a kind of pump case, including pump case metallic framework and non-metallic inner liner, it is characterised in that:
The non-metallic inner liner is coated and fixed on the inside of pump case metallic framework；
The pump case metallic framework includes the first skeleton and the second skeleton；
Groove is equipped on the inside of the junction of first skeleton and the second skeleton；
The outer surface of first skeleton is equipped with aperture；
The center of first skeleton and the second skeleton is respectively provided with a circular through hole, and two circular through hole diameters are identical；
The side wall of circular through hole is equipped with First Transition structure on first skeleton；
The side wall of circular through hole is equipped with the second transition structure on second skeleton；
The non-metallic inner liner is fully populated in groove, First Transition structure and the second transition structure.
2. pump case as described in claim 1, it is characterised in that: Liang≤1 Shuo of the groove.
3. pump case as described in claim 1, it is characterised in that: the groove floor width is greater than opening face width.
4. pump case as described in claim 1, it is characterised in that: the First Transition structure includes step structure and bulge-structure
A。
5. pump case as claimed in claim 4, it is characterised in that: pass through round and smooth mistake between the step structure and bulge-structure A
Cross curved surface connection.
6. pump case as described in claim 1, it is characterised in that: second transition structure includes bulge-structure B and C.
7. pump case as claimed in claim 6, it is characterised in that: connected between the bulge-structure B and C by rounding off curved surface
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821688389.3U CN209041177U (en) | 2018-10-18 | 2018-10-18 | A kind of pump case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821688389.3U CN209041177U (en) | 2018-10-18 | 2018-10-18 | A kind of pump case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209041177U true CN209041177U (en) | 2019-06-28 |
Family
ID=67036347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821688389.3U Active CN209041177U (en) | 2018-10-18 | 2018-10-18 | A kind of pump case |
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| Country | Link |
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| CN (1) | CN209041177U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210010A (en) * | 2018-10-18 | 2019-01-15 | 苏州奥耐特碳化硅陶瓷科技有限公司 | A kind of pump case and its manufacturing method |
-
2018
- 2018-10-18 CN CN201821688389.3U patent/CN209041177U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210010A (en) * | 2018-10-18 | 2019-01-15 | 苏州奥耐特碳化硅陶瓷科技有限公司 | A kind of pump case and its manufacturing method |
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