CN217401162U - Novel backplate of sediment stuff pump - Google Patents

Abstract

The utility model relates to a sediment stuff pump technical field discloses a novel backplate of sediment stuff pump, include the body and set up in the sunction inlet at body middle part, the body is including the sunction inlet ring that is located the middle part and being located the periphery of sunction inlet ring just overflows the side to an impeller, it includes the first wear-resisting body of base member portion and a plurality of to overflow the side, first wear-resisting body is close to one side of impeller with the base member portion is in the coplanar. The utility model discloses can increase of service life.

Description

Novel backplate of sediment stuff pump

Technical Field

The utility model relates to a sediment stuff pump technical field, in particular to novel backplate of sediment stuff pump.

Background

The slurry pump is a device for converting electric energy into kinetic energy and potential energy of a medium by a machine for increasing energy of a solid-liquid mixed medium by the action of centrifugal force (rotation of an impeller of the pump). The method is mainly suitable for the following steps: the fields of mine, power plant, dredging, metallurgy, chemical industry, building materials, petroleum and other industries. Under the action of centrifugal force, liquid is thrown from the center of the impeller to the outer edge and obtains energy, and the liquid leaves the outer edge of the impeller at high speed and enters the volute pump shell; in the volute pump casing, the liquid is decelerated due to the gradual expansion of the flow passage, part of kinetic energy is converted into static pressure energy, and finally the static pressure energy flows into a discharge pipeline at higher pressure and is sent to a required place. When the liquid flows from the center of the impeller to the outer edge, a certain vacuum is formed in the center of the impeller, and the liquid is continuously pressed into the impeller because the pressure above the liquid level of the storage tank is higher than the pressure at the inlet of the pump.

The impeller is one of the core elements of the slurry pump, and the impeller is mainly connected to the outside of the pump shell, so that the pump shell forms a complete shell; wherein, the middle part of the front guard plate is provided with a suction inlet for water to enter the pump shell after passing through; wherein have certain clearance between backplate and impeller, rivers also can flow in this clearance or the clearance, and along with the rotation of impeller, rivers between this clearance or clearance also can receive drive power, make most rivers in the suction inlet that flows back, a small part is gone out by the centrifugation, but no matter which kind of form, one side that the arc board is close to the impeller in this in-process all can receive the effect of rivers, because the operating environment of sediment stuff pump is comparatively abominable, consequently, arouse very easily that this side of arc board takes place wearing and tearing, thereby make the arc board and even the life of pump shorter.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel backplate of sediment stuff pump aims at solving the short problem of life.

The above technical purpose of the present invention can be achieved by the following technical solutions: the impeller flow passage comprises a body and a suction inlet arranged in the middle of the body, wherein the body comprises a suction inlet ring positioned in the middle and an overflow side positioned on the periphery of the suction inlet ring and facing an impeller, the overflow side comprises a base body and a plurality of first wear-resistant bodies, and one side of each first wear-resistant body, which is close to the impeller, is positioned on the same plane with the base body.

The utility model discloses a further set up to: the first wear-resistant bodies are in one or more of a triangular shape, a cuboid shape, a pentagonal prism shape, a hexagonal prism shape, an I shape, a soil character shape, a Chinese character 'Wang' shape and a waist drum shape, and are uniformly or non-uniformly distributed on the overflowing side.

The utility model discloses a further set up to: the first wear-resistant bodies are distributed on the periphery of the suction ring.

The utility model discloses a further set up to: the first wear-resistant bodies are in a strip shape and are uniformly distributed on the periphery of the suction ring in a divergent mode.

The utility model discloses a further set up to: the end of the first wear-resistant body far away from the suction ring has a set distance with the outer edge of the overflowing side.

The utility model discloses a further set up to: the overflowing side further comprises a plurality of second wear-resistant bodies distributed at intervals, the second wear-resistant bodies are located on the edge of the overflowing side, a set interval is arranged between the first wear-resistant bodies and the second wear-resistant bodies, and one side, close to the impeller, of the second wear-resistant bodies and one side, close to the impeller, of the first wear-resistant bodies are located on the same plane.

The utility model discloses a further set up to: one side of the second wear-resistant body, which deviates from the suction ring, is inclined.

The utility model discloses a further set up to: the side part of the second wear-resistant body connected with the base body part is in a convex shape, a groove shape or a wavy shape, and the cross section of the second wear-resistant body is polygonal, prismatic or elliptical.

The utility model discloses a further set up to: the depth of the second wear-resistant body on the overflowing side is larger than that of the first wear-resistant body on the overflowing side, and the second wear-resistant bodies are uniformly distributed on the edge of the base body part.

The utility model also discloses a supply for producing the novel guard plate of the slurry pump, which comprises the following steps,

s1, firing the first wear-resistant body, and then arranging the fired first wear-resistant body on a mold;

s2, pouring the fluid casting molding material into a mold to form a guard plate prototype;

and S3, nitriding and sintering at high temperature to form a whole, and compounding the first wear-resistant body into a part of the guard plate.

The beneficial effects of the utility model are that: in the working process, water flow mainly passes through the body (namely the suction port ring) through the suction port and then enters the impeller, wherein when part of water is between the impeller and the body and the part of water is subjected to the action force of the impeller to generate relative movement with the body, the movement acts on the overflowing side, and meanwhile, the overflowing side is provided with the first wear-resistant body which has stronger wear resistance compared with the material of the body, so that the first wear-resistant body can well resist the wear action of particles or other impurities in the water flow, thereby protecting the body and prolonging the service life of the body; wherein preferred first wear-resisting body is reaction sintering material in this scheme, also can select for use other wear-resisting materials according to actual conditions. Moreover, because one side that first wear-resisting body is close to the impeller is on same plane with the side that overflows, so the body is at work, at first can not produce other extra resistances to rivers, and secondly also can be fine prevent that rivers from using on first wear-resisting body, also played the guard action to first wear-resisting body.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of one embodiment of the novel guard plate of the slurry pump of the present invention.

In the figure, 1, a suction inlet; 2. a suction ring; 3. an overflow side; 3a, a base portion; 3b, a first wear-resistant body; 4. a second wear body.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings and specific embodiments. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example 1

A novel guard board of a slurry pump is shown in figure 1 (wherein the form in the figure is only schematic, and the number, the position, the shape and the like of a first wear-resistant body 3 and a second wear-resistant body 4 are consistent with the text part in actual production and use, but not only in one form in the schematic figure), and comprises a body and a suction inlet 1 arranged in the middle of the body, the body comprises a suction ring 2 (the material of which can be reaction sintered silicon carbide, recrystallized silicon carbide, boron carbide complex phase ceramics, normal pressure silicon carbide, non-pressure silicon carbide, zirconia and the like or other materials with good wear resistance) positioned in the middle and an overflowing side 3 which is positioned at the periphery of the suction ring 2 and is right opposite to an impeller, the flow side 3 comprises a base body part 3a and a plurality of first wear-resistant bodies 3b, and one side of each first wear-resistant body 3b close to the impeller is in the same plane with the base body part 3 a. The base body 3a and the first wear-resistant body 3b may be integrally formed by firing, or they may be formed separately and then combined.

The first wear-resistant body 3b is in one or more of a triangular shape, a rectangular parallelepiped shape, a pentagonal prism shape, a hexagonal prism shape, an i-shaped shape, a square shape, a king-shaped shape and a waist drum shape, the first wear-resistant body is uniformly or non-uniformly distributed on the overflowing side, and in the actual use process, the first wear-resistant body 3b can be made into other required shapes and structures according to the actual situation, the main function of the first wear-resistant body is to improve the wear resistance, and the first wear-resistant body is considered to be a scheme with a wear-resistant part, and the scheme is within the protection scope of the application, such as an irregular shape, a cylindrical shape or an elliptical shape. The first wear bodies 3b are distributed over the circumference of the suction ring 2. The first wear-resistant bodies 3b are in a strip shape, and the first wear-resistant bodies 3b are uniformly distributed on the periphery of the suction inlet ring 2 in a divergent shape; it should be understood that other distribution shapes are also within the scope of the present application, such as random distribution, array distribution, dense random distribution, etc., and all such distributions are also claimed herein.

The end of the first wear body 3b remote from the suction ring 2 has a set distance to the outer edge of the flow side 3. The overflow side 3 further comprises a plurality of second wear-resistant bodies 4 distributed at intervals, the second wear-resistant bodies 4 are located at the edge of the overflow side 3, a set interval is arranged between the first wear-resistant bodies 3b and the second wear-resistant bodies 4, and one side, close to the impeller, of the second wear-resistant bodies 4 and one side, close to the impeller, of the first wear-resistant bodies 3b are located on the same plane. One side of the second wear-resistant body 4, which is far away from the suction ring 2, is inclined, wherein the inclined angle is preferably 5-10 degrees (or other usable angles can be selected according to actual conditions), and the main function of the second wear-resistant body is that the guard plate can be better combined with a pump shell when a slurry pump is assembled subsequently.

Meanwhile, the shape of the second wear resistant body 4 is not fixed to a certain shape, but may be various, such as a right trapezoid, or an irregular shape in the base body portion 3a, and an inclined shape outside the base body portion 3 a.

The side portion of the second wear-resistant body 4 connected with the base body portion 3a is convex, concave or wavy, the cross section of the second wear-resistant body 4 is polygonal, prismatic or elliptical, and the edge of the second wear-resistant body can be made into other shapes according to actual conditions, so that the contact area between the second wear-resistant body 4 and the base body portion 3a can be increased, the composite strength is increased, the second wear-resistant body 4 and the base body portion 3a are connected in a buckling mode, the composite strength between the second wear-resistant body 4 and the base body portion 3a is further improved, and the service life of the guard plate is prolonged. The depth of the second wear body 4 in the flow side 3 is greater than the depth of the first wear body 3b in the flow side 3. The second wear-resistant bodies 4 are evenly distributed at the edge of the base portion 3 a.

Furthermore, one side (the side located outside) of the second wear resistant body 4 is preferably kept at the same angle as the edge of the base body 3a, preferably 93 °, 95 °, 100 °, etc., but if the angle of the edge of the base body 3a changes, the angle outside the second wear resistant body 4 also changes accordingly.

Wherein, the first wear-resistant body 3 and the second wear-resistant body 4 can be used independently or can be used in combination according to actual conditions. The materials of the first wear-resistant body 3 and the second wear-resistant body 4 can be the same material, or different materials, or the combination of a plurality of materials; the material in the present application is preferably silicon carbide composite ceramic, and is not limited to silicon carbide composite ceramic, silicon nitride-bonded silicon carbide ceramic, alumina ceramic, reaction-sintered ceramic, etc., and the material meeting the use requirement of the present application according to actual conditions is within the protection scope of the present application.

Moreover, the arrangement of the first wear resistant body 3 and the second wear resistant body 4 can be adapted or modified according to actual situations, and the wear resistant bodies can be uniformly arranged as shown in the drawings, or can be non-uniformly arranged, or randomly arranged at intervals, or even completely arranged, and all the arrangements are within the protection scope claimed by the present application.

The utility model also provides a supply for producing the novel guard plate of the slurry pump, which comprises the following steps,

s1, firing the first wear-resistant body 3b, and then arranging the fired first wear-resistant body 3b on a mold;

s2, pouring the fluid-shaped pouring molding material into a mould to form a guard plate embryonic form;

s3, the first wear-resistant body 3b is compounded into a part of the guard plate by high-temperature nitriding and sintering.

Wherein also a second wear body 4 is arranged on the mould.

The utility model provides a novel backplate of sediment stuff pump, in the course of the work, rivers mainly pass the body (also be the suction inlet ring 2) through sunction inlet 1, then enter into the impeller, wherein when some water is between impeller and body, and this part of water receives the impeller effort and with the body between produce the relative activity after, because this activity effect is acted on the side 3 that overflows, and have first wear-resisting body 3b on the side 3 that overflows simultaneously, first wear-resisting body 3b has stronger wearability than the material of body, so first wear-resisting body 3b makes the body can be fine resist the wearing and tearing effect of granule or other impurity in the rivers, thereby played the guard action to the body, prolonged its life; wherein in this scheme preferred first resistant body 3b is the reaction sintering material, also can select for use other wear-resisting materials according to actual conditions. Moreover, because one side that first wear-resisting body 3b is close to the impeller is on same plane with overflowing side 3, so the body is when work, at first can not produce other extra resistances to rivers, and secondly also can be fine prevent that rivers from using first wear-resisting body 3b on, also played the guard action to first wear-resisting body 3 b.

The first wear-resistant body 3b is cuboid and is distributed on the periphery of the suction ring 2 in a divergent manner, so that the first wear-resistant body can uniformly and comprehensively protect the overflowing side 3; meanwhile, a plurality of second wear-resistant bodies 4 (preferably made of reaction sintering materials, and other structures can be selected according to actual conditions) are arranged at the edge of the overcurrent side 3, and the first wear-resistant body 3b, the second wear-resistant bodies 4 and other structures of the body are preferably sintered into a whole, so that the second wear-resistant bodies 4 can also play a role in protecting the edge of the overcurrent side 3; the second wear-resistant body 4 is smaller, so that the second wear-resistant body can be more dispersedly used for protecting the overcurrent side 3, the protection effect is better, and the edge of the overcurrent side 3 is a relatively fragile place, so that the best protection is given to the fragile place, and the protection effect is optimal. Have the clearance between first wear-resisting body 3b and second wear-resisting body 4 to the clearance between first wear-resisting body 3b and the second wear-resisting body 4 is filled through other materials of body, and wherein first wear-resisting body 3b and second wear-resisting body 4 are difficult to fire each other in actual production and are as an organic whole, but the material through the body can realize sintering between first wear-resisting body 3b and the second wear-resisting body 4 simultaneously and become an organic whole, has guaranteed the holistic structural integrity and the structural strength of backplate.

Wherein the side that the side 3 that overflows is in just to the impeller has wearing and tearing, and the lateral part adjacent with this side, the outer fringe lateral part of arc board also takes place wearing and tearing easily promptly, and the edge of second wear-resisting body 4 also is the partly of backplate edge simultaneously, so second wear-resisting body 4 has also played the guard action to the body periphery for the protection scope is wider and more comprehensive. The depth of the second wear-resistant body 4 on the overflowing side 3 is greater than that of the first wear-resistant body 3b, and firstly, only one side of the outer surface of the first wear-resistant body 3b plays a wear-resisting role, so that the fact that the first wear-resistant body 3b is made to be too thick (and the depth is also greater) is not improved for actual wear resistance, and the first wear-resistant body 3b is made to be thinner better, so that the cost can be saved; and the second wear-resistant body 4 can play a role in protecting the edge of the body after being made thicker (with larger depth), so that the protection comprehensiveness is better.

Example two

The difference from the first embodiment is that the first wear resistant bodies 3b are hexagonal and the first wear resistant bodies 3b are relatively evenly and densely distributed.

In a further embodiment the first wear bodies 3b are hexagonal but not evenly densely distributed, but rather randomly distributed.

In a further embodiment, the first resistant body 3b is hexagonal, but is distributed partly annularly (coaxial with the suction grommet 2) and partly separately and between the annuli formed by the first resistant body 3 b.

In a further embodiment the first wear bodies 3b are cylindrical and the first wear bodies 3b are relatively evenly and densely distributed.

In a further embodiment the first wear bodies 3b are cylindrical but not evenly densely distributed, but rather randomly distributed.

In a further embodiment, the first resistant bodies 3b are cylindrical, but are distributed in a part annular (coaxial with the suction grommet 2) and in a separate part, between the annuli formed by the first resistant bodies 3 b.

In a further embodiment the first wear bodies 3b are cuboid but not evenly densely distributed, but rather randomly distributed.

In a further embodiment, both the first resistant body 3b and the second resistant body 4 are irregularly shaped, with the two parts either being regular or random.

It should also be understood that the structures claimed in this application are not limited to the details of the drawings and the description above.

It should be noted that, in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.

Claims (9)

1. A novel backplate of sediment stuff pump which characterized in that: the impeller wear-resistant structure comprises a body and a suction inlet (1) arranged in the middle of the body, wherein the body comprises a suction inlet ring (2) arranged in the middle and an overflow side (3) which is arranged on the periphery of the suction inlet ring (2) and is right opposite to an impeller, the overflow side (3) comprises a base body part (3a) and a plurality of first wear-resistant bodies (3b), and one side, close to the impeller, of each first wear-resistant body (3b) is located on the same plane as the base body part (3 a).

2. The novel backplate of slurry pump of claim 1, wherein: the first wear-resistant bodies (3b) are in one or more of a triangular shape, a rectangular shape, a pentagonal prism shape, a hexagonal prism shape, an I shape, a Chinese character 'tu', a shape and a waist drum shape, and the first wear-resistant bodies (3b) are uniformly or non-uniformly distributed on the overflowing side (3).

3. The novel backplate of slurry pump of claim 2, wherein: the first wear bodies (3b) are distributed over the circumference of the suction ring (2).

4. The novel backplate of slurry pump of claim 3, wherein: the first wear-resistant bodies (3b) are long-strip-shaped, and the first wear-resistant bodies (3b) are uniformly distributed on the periphery of the suction port ring (2) in a divergent mode.

5. The novel backplate of slurry pump of claim 2, wherein: the end of the first wear-resistant body (3b) remote from the suction ring (2) has a set distance to the outer edge of the flow side (3).

6. The novel backplate of slurry pump of claim 3, wherein: the overflowing side (3) further comprises a plurality of second wear-resistant bodies (4) distributed at intervals, the second wear-resistant bodies (4) are located at the edge of the overflowing side (3), a set interval is arranged between the first wear-resistant bodies (3b) and the second wear-resistant bodies (4), and one side, close to the impeller, of the second wear-resistant bodies (4) and one side, close to the impeller, of the first wear-resistant bodies (3b) are located on the same plane.

7. The novel backplate of slurry pump of claim 6, wherein: one side of the second wear-resistant body (4) departing from the suction ring (2) is inclined.

8. The novel backplate of slurry pump of claim 7, wherein: the side part of the second wear-resistant body (4) connected with the base body part (3a) is in a convex shape, a groove shape or a wavy shape, and the cross section of the second wear-resistant body (4) is in a polygonal shape, a prismatic shape or an elliptical shape.

9. The novel backplate of slurry pump of claim 6, wherein: the depth of the second wear bodies (4) on the flow side (3) is greater than the depth of the first wear bodies (3b) on the flow side (3), the second wear bodies (4) being evenly distributed at the edge of the base portion (3 a).

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