CN207673607U - A kind of impeller shaft core and the wear-resisting anti-sand fit structure of baffle - Google Patents

Abstract

The utility model belongs to deep well pump component structural constructing technology field, refer in particular to a kind of impeller shaft core and the wear-resisting anti-sand fit structure of baffle, including impeller shaft core, impeller and baffle, the impeller is fixed in impeller shaft core, and it is rotated together under the drive of impeller shaft core, the baffle is set to the top of impeller and is set in the outer end of impeller shaft core, it is connected with ceramic insert in the centre bore of the baffle, ceramic insert is in bell mouth shape, including abrasion section and sediment outflow section, and wear between section and the outer wall of sediment outflow Duan Junyu impeller shaft cores that there are gaps.The circular hole taper inserts of the high-strength ceramic structure by design has been inlayed at the center of baffle, has effectively solved, because of friction, to float, Concentricity tolerance, the impeller shaft core of a series of problems, such as card machine caused by water quality containing sand, abrasion, bonding and the wear-resisting anti-sand fit structure of baffle.

Description

A kind of impeller shaft core and the wear-resisting anti-sand fit structure of baffle

Technical field

The utility model belongs to deep well pump component structural constructing technology field, refers in particular to a kind of impeller shaft core and baffle is resistance to Grind anti-sand fit structure.

Background technology

Critical piece impeller sets used in well pump are mostly based on injection molding at present, due to operational shock and axis The deviation and water quality of concentricity contain silt and the friction of the contact surface of impeller shaft core and baffle is larger, so that impeller axle Core causes softening to bond with baffle frictional heating, and impeller floating generates frictional heating with baffle and softening is caused to bond.Leaf Taking turns shaft core, the sand grains caused by water quality containing sand enters stuck or abrasion with baffle, and direct shadow is caused to the service life of electric pump It rings.

Invention content

The utility model is in view of the above-mentioned problems, provide a kind of high intensity inlayed at the center of baffle by design The circular hole taper inserts of ceramic structure effectively solves, because of friction, to float, Concentricity tolerance, card machine caused by water quality containing sand, mill The impeller shaft core of a series of problems, such as damage, bonding and the wear-resisting anti-sand fit structure of baffle.

What the purpose of this utility model was realized in：

A kind of impeller shaft core and the wear-resisting anti-sand fit structure of baffle, including impeller shaft core, impeller and baffle, the leaf Wheel is fixed in impeller shaft core, and is rotated together under the drive of impeller shaft core, and the baffle is set to the top of impeller simultaneously It is set in the outer end of impeller shaft core, ceramic insert is connected in the centre bore of the baffle, ceramic insert is in bell mouth shape, packet Abrasion section and sediment outflow section is included, and wears between section and the outer wall of sediment outflow Duan Junyu impeller shaft cores that there are gaps.

In above-mentioned impeller shaft core and the wear-resisting anti-sand fit structure of baffle, the vertical range of the sediment outflow section is more than mill Damage the vertical range of section.

In above-mentioned impeller shaft core and the wear-resisting anti-sand fit structure of baffle, the inner wall and impeller shaft core of the abrasion section Outer wall be mutually parallel, the inner wall of the sediment outflow section towards close to one end of impeller in expanding outwardly shape.

In above-mentioned impeller shaft core and the wear-resisting anti-sand fit structure of baffle, the inner wall of the sediment outflow section is arc-shaped or bores Shape.

In above-mentioned impeller shaft core and the wear-resisting anti-sand fit structure of baffle, the impeller shaft core and impeller are integrated into The intersection of type structure, the impeller shaft core and impeller is equipped with wear-resisting step.

In above-mentioned impeller shaft core and the wear-resisting anti-sand fit structure of baffle, the wear-resisting step and impeller shaft core and leaf Wheel is an integral molding structure or wear-resisting step is removably attachable to the outer end of impeller shaft core.

In above-mentioned impeller shaft core and the wear-resisting anti-sand fit structure of baffle, the ceramic insert is integrated with baffle It is molded, and ceramic insert is entrenched in the inside of baffle.

In above-mentioned impeller shaft core and the wear-resisting anti-sand fit structure of baffle, the material of the impeller and impeller shaft core is Polyformaldehyde.

The utility model is prominent and beneficial compared with prior art to be had the technical effect that：

1. the ceramic insert in the be embedded in baffle centre bore of the utility model is by well-designed, to reduce baffle Friction with impeller shaft core is changed, and the frictional distance between baffle and impeller shaft core is shortened, by original water conservancy diversion The vertical plane of body centre bore shortens, and by partial distance by being vertically changed to taper (bell shape), and inserts bottom into Row polishes processing and expands circle diameter.

2. the utility model is replaced on the basis of original material, wear-resistant material polyformaldehyde impeller is used, and Changed in structure, the wear-resisting step of anti-floating together increased in impeller shaft core and impeller junction, by impeller with lead Friction between fluid effectively separates.

Description of the drawings

Fig. 1 is the cross section view of the wear-resisting anti-sand fit structure.

Fig. 2 is the cross section view of ceramic insert.

1- impeller shaft cores, 2- impellers, 3- baffles, 4- ceramic inserts, 41- wear section, 42- sediment outflow sections, the wear-resisting steps of 5-.

Specific implementation mode

The utility model is further described with specific embodiment below in conjunction with the accompanying drawings,

As shown in Figure 1, a kind of impeller shaft core and the wear-resisting anti-sand fit structure of baffle, including impeller shaft core 1,2 and of impeller Baffle 3, the impeller 2 are fixed in impeller shaft core 1, and are rotated together under the drive of impeller shaft core 1, the baffle 3 It is set to the top of impeller 2 and is set in the outer end of impeller shaft core 1, ceramic insert is connected in the centre bore of the baffle 3 4, ceramic insert 4 is in bell mouth shape, including abrasion section 41 and sediment outflow section 42, and wears section 41 and sediment outflow section 42 and impeller axle There are gaps between the outer wall of core 1.The ceramic material that 3 centre bore inserts of baffle uses has higher intensity, has with using There is the impeller shaft core 1 of high wear resistance polyformaldehyde material to coordinate, in use baffle 3 and leaf caused by Concentricity tolerance The friction of shaft core 1 and electric pump is taken turns to send out in 3 centre bore of baffle caused by the friction of the dry operating of water shortage and the friction of impeller shaft core 1 Newborn adhesion problem gives releasing, by 3 centre bore vertical plane Distance Shortened of original baffle, and by partial distance by hanging down It directly is changed to taper (bell shape), effective to reduce CONTACT WITH FRICTION area, the effect beneficial of taper flaring is to prevent chiltern water Sand grains in source enters the friction of baffle 3 centre bore and impeller shaft core 1 in flowing water stream, and having prevents sand grains from stopping, Play the role of with the quick sediment outflow of flow.

As shown in Fig. 2, in above-mentioned impeller shaft core and the wear-resisting anti-sand fit structure of baffle, the sediment outflow section 42 is hung down Straight distance is more than the vertical range of abrasion section 41, which is keeping the impeller shaft core 1 can the smooth rotation in baffle 3 as possible Meanwhile the area that may be rubbed between impeller shaft core 1 and baffle 3 is as small as possible.

As illustrated in fig. 1 and 2, in above-mentioned impeller shaft core and the wear-resisting anti-sand fit structure of baffle, the abrasion section 41 Inner wall and the outer wall of impeller shaft core 1 be mutually parallel, the inner wall of the sediment outflow section 42 towards close to one end of impeller 2 in expanding outwardly Shape, extension mouth can effectively reduce CONTACT WITH FRICTION area, prevent the sand grains in chiltern water source from entering water conservancy diversion in flowing water stream 3 centre bore of body rubs with impeller shaft core 1.

In above-mentioned impeller shaft core and the wear-resisting anti-sand fit structure of baffle, the inner wall of the sediment outflow section 42 it is arc-shaped or Taper.

As shown in Figure 1, in above-mentioned impeller shaft core and the wear-resisting anti-sand fit structure of baffle, 1 He of impeller shaft core Impeller 2 is an integral molding structure, and the intersection of the impeller shaft core 1 and impeller 2 is equipped with wear-resisting step 5, in traditional well pump, leaf It is more prone to impeller rising phenomenon when having On The Floating, especially big flow when 2 operating of wheel, causes impeller 2 and water conservancy diversion 3 frictional heating of body bonds, and the wear-resisting step 5 between impeller shaft core 1 and impeller 2 has been effectively spaced apart baffle 3 and plane on impeller 2 The distance between, it is therefore prevented that because of the frictional heating pinning phenomenon between plane on baffle 3 and impeller 2, while step height Leaving enough spaces allows the sand grains in water quality to pass through with smooth in water flow, the wear-resisting step 5 of ceramic insert 4 and polyformaldehyde material Again directly play the role of it is wear-resistant, effectively prevent caused by friction generate heat pinning phenomenon generation.

In above-mentioned impeller shaft core and the wear-resisting anti-sand fit structure of baffle, the wear-resisting step 5 and impeller shaft core 1 and Impeller 2 is an integral molding structure or wear-resisting step 5 is removably attachable to the outer end of impeller shaft core 1.

In above-mentioned impeller shaft core and the wear-resisting anti-sand fit structure of baffle, the ceramic insert 4 is one with baffle 3 Body is molded, and ceramic insert 4 is entrenched in the inside of baffle 3.

In above-mentioned impeller shaft core and the wear-resisting anti-sand fit structure of baffle, the material of the impeller 2 and impeller shaft core 1 For polyformaldehyde.

Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this It encloses, therefore：The equivalence changes that all structures, shape, principle according to the utility model are done, should all be covered by the protection of the utility model Within the scope of.

Claims (8)

1. a kind of impeller shaft core and the wear-resisting anti-sand fit structure of baffle, including impeller shaft core (1), impeller (2) and baffle (3), the impeller (2) is fixed in impeller shaft core (1), and is rotated together under the drive of impeller shaft core (1), the baffle (3) it is set to the top of impeller (2) and is set in the outer end of impeller shaft core (1), which is characterized in that in the baffle (3) Ceramic insert (4) is connected in heart hole, ceramic insert (4) is in bell mouth shape, including wears section (41) and sediment outflow section (42), and There are gaps between the outer wall of impeller shaft core (1) for abrasion section (41) and sediment outflow section (42).

2. impeller shaft core according to claim 1 and the wear-resisting anti-sand fit structure of baffle, which is characterized in that the sediment outflow The vertical range of section (42) is more than the vertical range of abrasion section (41).

3. impeller shaft core according to claim 1 or 2 and the wear-resisting anti-sand fit structure of baffle, which is characterized in that described The inner wall and the outer wall of impeller shaft core (1) of abrasion section (41) are mutually parallel, and the inner wall of the sediment outflow section (42) is towards close to impeller (2) One end in expanding outwardly shape.

4. impeller shaft core according to claim 3 and the wear-resisting anti-sand fit structure of baffle, which is characterized in that the sediment outflow Section (42) inner wall is arc-shaped or taper.

5. impeller shaft core according to claim 1 and the wear-resisting anti-sand fit structure of baffle, which is characterized in that the impeller Shaft core (1) and impeller (2) are an integral molding structure, and the intersection of the impeller shaft core (1) and impeller (2) is equipped with wear-resisting step (5)。

6. impeller shaft core according to claim 5 and the wear-resisting anti-sand fit structure of baffle, which is characterized in that described wear-resisting Step (5) is an integral molding structure with impeller shaft core (1) and impeller (2) or wear-resisting step (5) is removably attachable to impeller axle The outer end of core (1).

7. impeller shaft core according to claim 1 and the wear-resisting anti-sand fit structure of baffle, which is characterized in that the ceramics Inserts (4) is integrated with baffle (3) and is molded, and ceramic insert (4) is entrenched in the inside of baffle (3).

8. according to the impeller shaft core of claim 1 or 7 and the wear-resisting anti-sand fit structure of baffle, which is characterized in that the leaf The material for taking turns (2) and impeller shaft core (1) is polyformaldehyde.