CN208534848U - A kind of wear-resisting pump housing - Google Patents

Abstract

The utility model discloses a kind of wear-resisting pump housing, including pump case and pump cover, pump case includes shell and liner, shell includes front casing and rear casing, shell is equipped with discharge opening, and front casing is equipped with feed inlet, the split type structure that liner is an integral structure or is bonded to each other by bonding agent；Pump cover includes pump cover skeleton and lid, and the edge junction of lid and liner is equipped with the enclosed annular space surrounded by the two side wall, is equipped with Gask-O-Seal in the enclosed annular space.The wear-resisting pump housing provided by the utility model, is conducive to the enlargement and mass production of the pump housing, and can mention reliability and the service life of the pump housing.

Description

A kind of wear-resisting pump housing

Technical field

The utility model relates to rotary motive power pumping unit field more particularly to a kind of wear-resisting pump housings.

Background technique

In the industries such as ore dressing and smelting, some abrasive solid-liquid two-phase flows often are conveyed with centrifugal pump, this is often Select Pulp pump.Common abrasion resisting pump often uses Cr26, the manufacture of the antifriction alloys such as Cr15Mo3, the pump of these material antifriction alloys manufacture It is difficult to meet requirement under many operating conditions.

Better wearability can be obtained using composite abrasion resistance material, these composite abrasion resistance materials mainly by abrasion resistant particles and Bonding agent composition, the material of the most common abrasion resistant particles are the composition such as corundum, silicon carbide, zirconium oxide, garnet, silicon nitride, knot Mixture is usually resin, such as phenolic resin.The abrasion resisting pump flow passage part service life of this kind of composite material manufacture is in many use conditions Under can achieve 3 times of Cr26 or more, now start to be applied to manufacture wear-resisting pump.

Chinese patent literature CN103233907A discloses a kind of abrasion resisting pump of the present inventor's proposition, as shown in figure 17, The pump housing is made of pump case and two part of pump cover, and pump case 00' is manufactured by the compound resistance to material of the metal shell 001 ' of entirety and one Integral lining 002' composition, pump cover is made of lid 1092 ' and lid skeleton 1091 ', and the structure of this pump housing is simple, reliability Height, but its manufacturing process is difficult, reason first is that mold is difficult to be put into metal shell 001', reason second is that mold in liner It is difficult to take out after 002' forming, so this structure is only used for manufacture pony pump, when manufacturing biggish pump, liner 002 ' is only Offhand can be used, it is difficult to control cost and quality, this makes its application be very limited.To solve this problem, CN107762977A, CN105201914A, CN105402139A, CN205423325U provide the present inventor proposition four kinds it is resistance to The pump housing is ground, specific structure is as shown in Figure 15, Figure 16, and the pump housing is by perpendicular to main-shaft axis and by the A'-A' plane of discharge opening It is split into the preceding pump housing and rear pump housing two parts；The preceding pump housing is made of front casing 101 ' and preceding liner 1031 ', and the rear pump housing is by rear casing 102 ' form with rear liner 1032 ', and the same of A'-A' plane is arranged in suction inlet 111 ' and preceding liner 1031 ', front casing 101 ' The other side of A'-A' plane is arranged in side, rear liner 1032 ' and rear casing 102 '；Preceding liner 1031 ' and rear liner 1032 ' Main material is composite abrasion resistance material, and the main ingredient of complex abrasion-proof material is abrasion resistant particles and resinoid bond, front casing 101 ' Material with rear casing 102 ' is metal, and A'-A' plane is provided with gasket 108', is compressed by the first bolt 107 ' of fastening, To realize the sealing of A'-A' plane.The assembly of mold and the dismounting of mold are asked when this structure preferably solves pump housing manufacture Topic.

But in practice, it has been found that the wear-resisting pump housing of above structure has the following deficiencies: one is sealing reliability is poor, especially It is that leakage is easily rushed down from gasket when the operating pressure of pump is higher, the second is since gasket can only be soft using rubber etc. Property material manufacture, and the wearability of this type flexible material is significantly lower than composite abrasion resistance material, thus its service life be also significantly less than it is multiple Wear-resistant material is closed, is handled not in time after gasket abrasion, it is also possible to lead to the metals such as front casing 101' or rear casing 102' Parts damages, this causes gasket to become a high fault point.

In conclusion in terms of there is technique, service life or reliability in the prior art.

Utility model content

The purpose of the utility model is to provide a kind of wear-resisting pump housings, are conducive to the enlargement and mass production of the pump housing, and Reliability and the service life of the pump housing can be mentioned.

To achieve the above object, the utility model provides a kind of wear-resisting pump housing, including the pump case and pump cover being interlocked, pump case Including being bonded integral shell and liner, shell is metal material, including front casing and rear casing, and discharge opening setting is preceding outer Between shell and rear casing, front casing is equipped with feed inlet, and the liner is an integral structure or for two sealings positioned opposite The split type structure that end face is bonded to each other by bonding agent；Front casing and rear casing are also by the first bolt fastening or by being welded into One, pump cover include the pump cover skeleton and lid of metal material, are equipped at pump cover skeleton edges perpendicular to pump housing main-shaft axis Plane, rear casing are equipped with the end face perpendicular to pump housing main-shaft axis, and pump cover is pressed on rear casing, the plane on pump cover skeleton It is bonded with the end face on rear casing, lid and liner surround a closed annular space, are equipped with ring in the enclosed annular space Shape gasket.

The inner cavity of the wear-resisting pump housing is wearing composite material A by material as a further improvement of the utility model, Lid and liner surround.

As the further improvement of the utility model, both the liner of the split type structure includes seal face passes through The preceding liner and rear liner that the bonding agent is bonded to each other, surround the enclosed annular space between the lid and rear liner.

As the further improvement of the utility model, including pump cover seat, pump cover is arranged between pump cover seat and rear casing, Pump cover is pressed on rear casing by pump cover seat.

As the further improvement of the utility model, between pump cover seat and pump cover, it is provided with for placing decompression lid Or the space of mechanical seal case, the planar annular towards pump cover seat is provided on lid, the outer profile of planar annular is rounded, The diameter of the planar annular is greater than the internal diameter that the axis projection of decompression lid or the sealing ring on mechanical seal case is arranged in.

As the further improvement of the utility model, the pump cover skeleton include the cyclic skeleton that is exposed to outside lid and It is embedded in the intracorporal disappearance skeleton of lid, disappearance skeleton is equipped with multiple hollow holes, and the planar annular on lid is located at pump cover On the inside of cyclic skeleton on skeleton.

As the further improvement of the utility model, wear plate is provided in the wetted surfaces of liner or lid, it is resistance to The material of grinding is potsherd, hard metal tip or diamond composition.

As the further improvement of the utility model, lid includes the abrasion proof ceramic wafer of at least one annular, lid quilt Bonding agent is bonded on pump cover skeleton.

Beneficial effect

Compared with prior art, the advantages of the wear-resisting pump housing of the utility model are as follows:

1, pump case includes the liner of metal shell and composite abrasion resistance material manufacture, and this structure not only guarantees that pump case has preferably Mechanical strength, it is also ensured that flow-passing surface has good wearability；

2, metal shell is made of the front casing and rear casing manufactured respectively, and the seal face of front casing and rear casing passes through This structure of discharge opening is convenient for the assembly and positioning of mold, easy to implement in technique；

3, liner be the entirety that can not be split or preceding liner and rear liner it is glued can not be split at one it is whole Body, both structures can solve CN107762977A, CN105201914A, CN105402139A, CN205423325U and deposit The resistance to pressure difference of flexible gasket and wear-resisting property difference problem；

4, the purpose of pump cover is arranged is to provide condition for the dismounting of impeller, and pump cover is made of pump cover skeleton and lid, lid Material be composite abrasion resistance material, this structure not only can guarantee the intensity of pump cover, also can guarantee its wearability；

5, the sealing between pump cover and pump case is realized generally by gasket, but the wearability of gasket is poor, sealing Pad cannot directly be washed away by fluid, therefore, the closing that both lid and liner edge side wall surround is arranged in gasket In annular space, sealing can be made to be protected and obtain longer service life in this way；Obviously, gasket quilt in the annular space Compared to the radially compressed dismounting for being conducive to pump cover and sealing reliability is improved along major axes orientation compression, but gasket must be made For decrement in suitable range, gasket decrement is too big, not only will lead to gasket damage, it is also possible to lead to liner or lid Damage, gasket decrement is too small, and can leak；The end of one vertical pump housing main-shaft axis is set on rear casing Face is arranged a plane in the corresponding position of pump cover skeleton, by pump cover bolt presses on the end face, only needs when processing in this way Control the size of the annular space, be just good at controlling the decrement of gasket, to realize reliable sealing, prevent liner or Lid is subject to crushing；

6, two functions may be implemented in pump cover seat, one is pump cover is pressed on rear casing, to realize sealing, the second is The pump housing and parts of bearings are connected；

7, when using sub-impeller seal or mechanical seal, decompression lid or mechanical seal case need the engagement in itself and pump cover Sealing ring is set on face, to prevent sealing ring from rushing down leakage, needs to be arranged one on pump cover and sealing ring is contacted and compressed close The sealing plane of seal, it is simplest that sealing plane, which is arranged on skeleton from technique, and cost is also minimum, but metal material Skeleton wear-resisting and rotproofness it is poor, easily lead in this way metallic framework occur abrasion and damage；If sealing plane is simply set It sets on the lid of complex abrasion-proof material A, can be damaged because the intensity of lid is insufficient；Sealing plane is arranged wear-resisting In composite A, and justify the outer profile of sealing plane, and keeps the outer diameter of the circle interior greater than the axis projection of sealing ring Diameter, while disappearance skeleton is set in the axis projection position of sealing ring, the disappearance skeleton and pump cover carcasing at an entirety, And coated by the composite abrasion resistance material of pump cover body, such pump cover skeleton and disappearance skeleton just do not reach fluid, while pump cover body The relatively strong pressure on sealing ring can also be born to be applied to, to guarantee reliability and the service life of pump cover；

8, disappearance skeleton is equipped with multiple hollow holes, can be further improved the intensity of pump cover, prevents lid from damaging；

9, it since resistance of the composite abrasion resistance material A to pellet big in medium is poor, is impacted to improve the pump housing to bulky grain Wear plate can be arranged in the wetted surfaces of preceding liner or lid in the resistivity of abrasion, and potsherd, hard can be used in wear plate The impact resistances such as alloy sheet or diamond composition and the preferable material of wearability.

Through the following description and in conjunction with the attached drawings, the utility model will become more fully apparent, these attached drawings are for explaining this The embodiment of utility model.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the cross-sectional view of the utility model embodiment 1；

Fig. 2 is partial enlarged view of the Fig. 1 at B；

Fig. 3 is partial enlarged view of the Fig. 1 at C；

Fig. 4 is the cross-sectional view of pump cover in the utility model embodiment 1；

Fig. 5 is the perspective view of pump cover skeleton in the utility model embodiment 1；

Fig. 6 is the perspective view after front casing and preceding liner process in the utility model embodiment 1；

Fig. 7 is the schematic diagram of liner before processing in the utility model embodiment 1；

Fig. 8 is the schematic diagram of liner after processing in the utility model embodiment 1；

Fig. 9 is to illustrate interior preceding lining and rear liner with the technique that bonding agent is bonded together in the utility model embodiment 1 Figure；

Figure 10 is the cross-sectional view of the utility model embodiment 2；

Figure 11 is the perspective view of 2 front casing of the utility model embodiment；

Figure 12 is the process schematic representation that the utility model embodiment 2 processes liner；

Figure 13 is the cross-sectional view of the utility model embodiment 3；

Figure 14 is the cross-sectional view of 4 pump cover of the utility model embodiment；

Figure 15 is a kind of wear-resisting pump housing cross-sectional view disclosed in CN107762977A；

Figure 16 is partial enlarged view of the Figure 15 at B '；

Figure 17 is a kind of schematic diagram of the wear-resisting pump housing disclosed in CN103233907A.

Specific embodiment

The embodiments of the present invention are described referring now to the drawings.

Embodiment 1

Specific embodiment of the present utility model is as shown in Figures 1 to 9, a kind of wear-resisting pump housing, including pump case and pump cover, pump Shell includes the liner 103 of metal shell and composite abrasion resistance material A manufacture, and metal shell includes 101 He of front casing manufactured respectively Rear casing 102.The opposite seal face of both front casing 101 and rear casing 102 is located on the faying face A-A in Fig. 1.Front casing 101 and rear casing 102 faying face A-A pass through discharge opening 110.Liner 103 is made of preceding liner 1031 and rear liner 1032, preceding The opposite seal face of both liner 1031 and rear liner 1032 is located on the faying face A-A in Fig. 1.Preceding liner 1031 and it is rear in Lining 1032 is bonded the entirety that can not be split at one at glued dose 104 of A-A faying face, front casing 101 by with rear casing 102 by The fastening of first bolt 107 passes through integrally welded；Pump cover 109 is by the pump cover skeleton 1091 of metal material and 1092 groups of lid At the material of lid 1092 is composite abrasion resistance material, and 111 be feed inlet.The preceding pump housing includes front casing 101 and preceding liner 1031, The pump housing includes rear casing 102 and rear liner 1032 afterwards.

The main ingredient of wearing composite material A is 85% silicon-carbide particle (weight) and 15% phenolic resin in the present embodiment (weight).

1091 edge of pump cover skeleton is equipped with the plane perpendicular to pump housing main-shaft axis towards the side of rear casing 102 1098, the end face 1021 perpendicular to pump housing main-shaft axis, pump cover are equipped with towards the side of pump cover skeleton 1091 on rear casing 102 109 by third bolt 116 by being pressed on rear casing 102, in the plane 1098 on pump cover skeleton 1091 and rear casing 102 End face 1021 be bonded.Plane 1098 and end face 1021 are annular in shape.

The edge junction of lid 1092 and liner 103 is equipped with the enclosed annular space surrounded by the two side wall, the closing Gask-O-Seal 117 is equipped in annular space.The outside dimension of Gask-O-Seal 117 is no more than the ring-shaped flat on pump cover skeleton 1091 The Internal periphery in face 1098.As shown in Figure 1, Figure 3, in the present embodiment, between pump cover 109 and rear casing 102, it is provided with placement The enclosed annular space of sealing ring or Gask-O-Seal 117, it is wear-resisting compound for surrounding the material on the surface of the enclosed annular space Materials A, as shown in figure 3, the internal diameter of the annular space is a, outer diameter b, wherein a is the straight of the axis being arranged on lid 1092 Diameter, b are the internal diameter in the hole being arranged on rear liner 1032, and the inner surface of the enclosed annular space is axis surface shown in a, institute State the outer surface of enclosed annular space, hole surface shown in as b, such as Fig. 3, it is clear that the inner surface of closed ring sky and one End face is arranged on lid 1092, and the outer surface of enclosed annular space and another end face are arranged on rear liner 1032, this Structure is easy to the assembly and dismounting of pump cover 109, it is also ensured that sealing effect, while protecting sealing ring or Gask-O-Seal 117 It is allowed to be not easy to be worn.

In embodiment 1 as shown in Figure 1, Figure 4, Figure 5,119 material of pump cover seat is cast iron, and pump cover 109 is arranged in pump cover seat Between 119 and rear casing 102, pump cover seat 119 is connected by third bolt 116 and rear casing 102, and pump cover 109 is pressed on On rear casing 102, pump cover seat 119 can be fixed on bearing body by bolt.

When pump is provided with decompression lid or mechanical seal case 112, need to be arranged on pump cover 109 compression sealing ring 115 The outer profile of plane 1094, plane 1094 is circle, is arranged on the composite abrasion resistance material A of lid 1092, has a diameter larger than close The internal diameter of the axis projection of seal 115 is provided with disappearance skeleton 1093, the disappearance bone in the axis projection position of sealing ring 115 Frame 1093 and pump cover skeleton 1091 pass through welding production into an entirety, disappear the complex abrasion-proof material of 1093 coverd part 1092 of skeleton Material cladding, such pump cover 109 can bear the pressure being applied on sealing ring 115, while skeleton 1091 will not be by fluid Abrasion or corrosion.

In embodiment 1 as shown in Figure 1, Figure 4, Figure 5, pump cover skeleton 1092 uses welding structure, and forms several hollow outs Hole 1096 is provided with several threaded holes 1095 on pump cover skeleton 1092, is pressed on pump cover 109 by the second bolt 113 and subtracts On gland or mechanical seal case 112, to realize sealing between the two below.

In embodiment 1 as shown in Figure 1, Figure 4, Figure 5, the plane 1098 of main-shaft axis is provided perpendicular on pump cover 109, Pump cover 109 is pressed on rear casing 102 by the second bolt 116, be arranged in plane 1098 and rear casing 102 perpendicular to spindle shaft The plane 1021 of line fastens, and setting pump cover 109 so not only can suitably force sealing ring 117 tightly, while can incite somebody to action With suitable decrement compression, this structure can be realized simultaneously above-mentioned sealing ring 115 on decompression lid or mechanical seal case 112 The reliability sealed at two.In Fig. 7, front pump shell shown in Fig. 8, rear pump shell schematic diagram of fabrication technology, 122 He of front pump shell mold Metal die can be used in rear pump shell mold 124, and front pump shell die index 125 and rear pump shell die index 126 are also using gold Belong to material, such mold there can be the very long service life.After mold assembles, first casting space 114 or the just will form The mixture for forming composite abrasion resistance material A is uniformly mixed by two casting spaces 120, injects the first casting space from arrow direction 114 or second in casting space 120, forms liner by the curing condition hardening composite abrasion resistance material of composite abrasion resistance material A 1031 or rear liner 1032, during hardening, front casing 101 and preceding liner 1031 are by the bonding in composite abrasion resistance material A Agent bonding become the entirety that can not be split, rear casing 102 and liner 1032 by the resin bonding in composite abrasion resistance material A at Another entirety that can not be split.

It is in Fig. 9, the A-A planar horizontal of front pump shell is upward, bonding agent 104 is smeared on A-A faying face, bonding agent is Polyamide, to reinforce wearability, can be added 80% in bonding agent 104 when the gap between the joint surface A-A is larger The particles such as corundum, garnet, silicon nitride substitution can also be added in the silicon-carbide particle of (weight) 100 mesh.

The simple shape of pump cover 109 can be manufactured according to a conventional method, because compiling width reason, be no longer described in detail.

Embodiment 2

Specific embodiment of the present utility model is as shown in Figure 10 to Figure 12, and pump case includes metal shell and an entirety knot The liner 103 of the composite abrasion resistance material A manufacture of structure, metal shell includes the front casing 101 and rear casing 102 manufactured respectively, preceding The faying face A-A of shell 101 and rear casing 102 passes through discharge opening 110；Liner 103, front casing 101 and rear casing 102 are glued The entirety that can not be split at one, front casing 101 and rear casing 102 are fastened by the first bolt 107 or by integrally welded；Pump Lid 109 is made of the pump cover skeleton 1091 and lid 1092 of metal material, and the material of lid 1092 is composite abrasion resistance material, and 111 For feed inlet.

In technique diagram shown in Figure 12, gypsum or resin sand manufacture is can be used in disposable tool 121, it is consolidated with glue It is scheduled in third die index 118, then successively assembles rear casing 102 and front casing 101, by front casing 101 and rear casing 102 With bolt fastening together (if rear casing 102, front casing 101 use cast steel, the two can also be welded into one it is whole Body), it is multiple to the injection of third casting space 130 between disposable tool 121 and front casing 101, rear casing 102 in the direction of the arrow The mixture of wear-resistant material A is closed, air is discharged, after waiting composite abrasion resistance materials A to harden, that is, forms the liner 103 of an entirety, it is multiple The resin in wear-resistant material A is closed in hardening process, liner 103, front casing 101, rear casing 102 are bonded can not as one The entirety of fractionation.

The main ingredient of composite abrasion resistance material A is 83% corundum in granules (weight) and 17% vinylite in the present embodiment (weight).

Embodiment 3

In the embodiment 3 shown in Figure 13, the wetted surfaces of liner 103 are provided with wear plate 1033, wear plate can be adopted With the potsherd of the materials such as silicon carbide, the product of the materials such as hard alloy or diamond such as tungsten-cobalt, titanium cobalt can also be used certainly, this For sample when containing bulky grain in medium, the pump housing can obtain longer service life.

Wear plate 1033 can be arranged by following technique:

1) disposable tool surface is applied into one layer of bonding agent, wear plate 1033 is cemented on disposable tool.

2) rear casing 102, die index, the disposable tool for being bonded wear plate 1033 are successively assembled into fixation；

3) front casing 101 and rear casing 102 are bolted together or are welded as a whole；

4) into the gap between disposable tool and front casing 101, rear casing 102, injection forms the mixed of wear-resistant material A Material is closed, air is discharged.

5) mixture is hardened, after the completion of to be hardened, wear plate 1033 is and rear liner 1032, front pump shell 101, rear pump shell 102 bondings become the entirety that can not be split.

6) die index is removed；

7) disposable tool is destroyed；Clean out the fragment of disposable tool.

In the present embodiment 3, the material of disposable tool is resin-sand.

Embodiment 4

As shown in figure 14, difference from example 1 is that, lid 1092 is by an annular abrasion proof ceramic wafer 1034 It constitutes, 1092 glued doses of lid are bonded on pump cover skeleton 1091.The material of annular abrasion proof ceramic wafer 1034 in the present embodiment Matter is silicon carbide, and aluminium oxide, silicon nitride, zirconium oxide etc. can also be used；Decompression lid or mechanical seal case can be set in the present embodiment 112, the axis projection for the sealing ring 115 being arranged on decompression lid or mechanical seal case 112 falls in lid 1092 and pump cover skeleton 1091 junction, the i.e. outer of the axis projection of sealing ring 115 are fallen on pump cover skeleton 1091, the axial direction of sealing ring 115 The interior edge of projection is fallen on lid 1092, and the pressure that sealing ring 115 can in this way applied largely is held by pump cover skeleton 1091 By the sealing ring 115 for preventing annular abrasion proof ceramic wafer 1034 to be arranged on decompression lid or mechanical seal case 112 damages by pressure.

In addition, lid 1092 can also be made of the abrasion proof ceramic wafer 1034 of at least two annulars along the superposition of its center line, The abrasion proof ceramic wafer 1034 of two neighboring annular mutually bonds, and 1034 thickness of abrasion proof ceramic wafer of each annular can be identical, can also With difference.

For the actual effect for verifying the utility model, the WT100-390 abrasion resisting pump pump housing that we produce my company is assembled After compare sealing effect test, participate in 3 of comparative test and pumped with model, wherein the CN107762977A that pump 1 uses is public The wear-resisting pump housing for opening technology production, is provided with gasket 108；Pump 2 is wear-resisting to be produced using 1 technology of the utility model embodiment The pump housing, liner are to be bonded together after manufacturing respectively, and pump 3 is the wear-resisting pump housing raw using 2 technology of the utility model embodiment, Using liner made in one piece, front casing and rear casing are bolted firm, to 3 pump priming pressure testings, record it respectively Pressure and reason when starting to leak at A-A faying face, concrete condition are as follows:

Serial number	Start leak pressure (Mpa)	Leakage cause
			Pump 1	1.32	Gasket destroys
Pump 2	3.15	Pump housing cracking
			Pump 3	3.43	Pump housing cracking

As can be seen from the above table, the voltage endurance capability using the pump 2 of the wear-resisting pump housing of the utility model technology, pump 3 is obviously high In the pump 1 using the prior art.

In the service life that product is manufactured for two kinds of technologies of comparison, above-mentioned 3 pumps are compared in the same pump position in certain dressing plant Test, the service life and the pump housing source of damage, statistic record for recording the pump housing are as follows:

Serial number	The pump housing service life (h)	The pump housing source of damage
			Pump 1	682	Gasket damage
Pump 2	2656	The pump housing is worn out
			Pump 3	3122	The pump housing is worn out

As can be seen from the above table, the utility model preferably resolves prior art service life short problem.

In conclusion the utility model is compared with the prior art, it is not only easy to implement in technique, and well solved existing skill Art poor reliability, service life short problem.

Combine most preferred embodiment that the utility model is described above, but the utility model is not limited to above take off The embodiment shown, and modification, equivalent combinations that various essence according to the present utility model carry out should be covered.

Claims (8)

1. a kind of wear-resisting pump housing, including the pump case being interlocked and pump cover (109), which is characterized in that pump case includes that bonding is integral Shell and liner (103), the shell is metal material, including front casing (101) and rear casing (102), discharge opening (110) It is arranged between front casing (101) and rear casing (102), front casing (101) is equipped with feed inlet (111), the liner (103) It is an integral structure or passes through the split type structure that bonding agent (104) are bonded to each other for two seal faces positioned opposite；Before Shell (101) and rear casing (102) are also fastened by the first bolt (107) or by integrally welded；Pump cover (109) includes metal The pump cover skeleton (1091) and lid (1092) of material, pump cover skeleton (1091) edge are equipped with perpendicular to pump housing main-shaft axis Plane (1098), rear casing (102) are equipped with the end face (1021) perpendicular to pump housing main-shaft axis, and pump cover (109) is pressed in On rear casing (102), the plane (1098) on pump cover skeleton (1091) is bonded with the end face (1021) on rear casing (102), lid Body (1092) and liner (103) surround a closed annular space, are equipped with Gask-O-Seal in the enclosed annular space (117)。

2. a kind of wear-resisting pump housing according to claim 1, which is characterized in that the inner cavity of the wear-resisting pump housing is by material The lid (1092) and liner (103) of wearing composite material A surrounds.

3. a kind of wear-resisting pump housing according to claim 1, which is characterized in that the liner (103) of the split type structure wraps It includes the two seal face and passes through preceding liner (1031) and rear liner (1032) that the bonding agent (104) are bonded to each other, the lid The enclosed annular space is surrounded between body (1092) and rear liner (1032).

4. a kind of wear-resisting pump housing according to claim 1, which is characterized in that including pump cover seat (119), pump cover (109) is set It sets between pump cover seat (119) and rear casing (102), pump cover (109) is pressed on rear casing (102) by pump cover seat (119).

5. a kind of wear-resisting pump housing according to claim 4, which is characterized in that pump cover seat (119) and pump cover (109) it Between, it is provided with the space for placing decompression lid or mechanical seal case (112), is provided on lid (1092) towards pump cover seat (119) planar annular (1094), the outer profile of planar annular (1094) is rounded, and the diameter of the planar annular (1094) is big In the internal diameter of the axis projection of sealing ring (115) of the setting on decompression lid or mechanical seal case (112).

6. a kind of wear-resisting pump housing according to claim 5, which is characterized in that the pump cover skeleton (1091) includes being exposed to The cyclic skeleton of lid (1092) outside and the disappearance skeleton (1093) being embedded in lid (1092) are disappeared and are set on skeleton (1093) Have multiple hollow holes (1096), the planar annular (1094) on lid (1092) is located at the ring-type on pump cover skeleton (1091) On the inside of skeleton.

7. a kind of wear-resisting pump housing according to claim 4, which is characterized in that pump cover seat (119) and pump cover (109) it Between, it is provided with the space for placing decompression lid or mechanical seal case (112), the lid (1092) includes at least one annular Abrasion proof ceramic wafer (1034), glued dose of lid (1092) is bonded on pump cover skeleton (1091), decompression lid or mechanical seal The outer of the axis projection of sealing ring (115) on case (112) is fallen on pump cover skeleton (1091), the axial direction of sealing ring (115) The interior edge of projection is fallen on lid (1092).

8. a kind of wear-resisting pump housing according to claim 1, which is characterized in that in the mistake of liner (103) or lid (1092) It is provided on flow table face wear plate (1033), the material of wear plate (1033) is potsherd, hard metal tip or diamond composition.