Adjustable structure for gap between impeller and front guard plate of horizontal slurry pump
By designing an adjustable impeller and front guard clearance structure in a horizontal slurry pump, the problem of excessive gap in the prior art is solved, reducing the slurry return flow and improving the pump efficiency.
Patent Information
- Application Number
- CN202421178165.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-28
AI Technical Summary
In the existing horizontal slurry pump, the reserved gap between the impeller cover plate and the front guard plate is large, resulting in an increase in the return flow of the slurry and reducing the efficiency of the pump.
A horizontal slurry pump impeller and front guard plate gap adjustable structure is designed. By setting a machining boss, assembly ring plate and adjustment components on the impeller and front guard plate, the position of the ring adjustment plate is adjusted, and the impeller and the The gap between the front guard plates.
It effectively reduces the gap between the impeller and the front guard plate, reduces the return flow of the slurry, and improves the efficiency of the pump.
Smart Images
Figure CN222315384U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of horizontal slurry pumps, and more specifically relates to a structure with adjustable clearance between an impeller and a front guard plate of a horizontal slurry pump. Background Art
[0002] Horizontal slurry pump is a pump used to transport slurry containing solid particles. It is characterized by a double pump casing structure, which can effectively prevent particles from depositing and wearing in the pump. Horizontal slurry pumps are widely used in mining, metallurgy, chemical industry, construction, environmental protection and other industries, and are particularly suitable for transporting high-concentration, highly abrasive slurries.
[0003] In the prior art, the impeller of the slurry pump is installed in the jacket. In order to avoid interference between the impeller cover and the front guard, a certain gap is reserved between the impeller cover and the front guard. Usually, the impeller, the jacket and the front guard are formed by casting, and the tolerance of casting is large, so the size of the reserved gap is usually large. A large reserved gap will increase the reflux of the slurry and reduce the efficiency of the pump. Utility Model Content
[0004] The utility model aims to provide a structure with adjustable gap between the impeller and the front guard plate of a horizontal slurry pump, aiming to solve the problem that the reserved gap between the impeller cover plate and the front guard plate is large, which increases the reflux volume of the slurry and reduces the efficiency of the pump.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a horizontal slurry pump impeller and front guard plate adjustable gap structure, including an impeller body and a front guard plate body, a front cover plate is arranged on one side of the water inlet of the impeller body, a processing boss is arranged on the inner ring of the front side surface of the front cover plate, a first processing plane is arranged on the front side surface of the processing boss, an assembly ring plate is arranged on the front side surface of the front cover plate, the assembly ring plate is sleeved on the outer periphery of the processing boss and is welded and fixed to the front cover plate, a second processing plane is arranged on the front side surface of the assembly ring plate, the first processing plane and the second processing plane are coplanar to form a first matching plane, an annular groove is arranged on the rear side surface of the front guard plate body, an annular adjustment plate is arranged in the annular groove, an adjustment component is arranged on the front guard plate body, the adjustment component is arranged corresponding to the annular groove, and the adjustment component is used to push the annular adjustment plate to move toward the first matching plane to adjust the gap between the impeller body and the front guard plate body.
[0006] In a possible implementation manner, a second matching plane is provided on the rear side surface of the annular adjustment plate, and the first matching plane and the second matching plane are parallel to each other.
[0007] In a possible implementation, the inner diameter of the annular adjustment plate is not less than the inner diameter of the machining boss, and the outer diameter of the annular adjustment plate is greater than the outer diameter of the assembly ring plate.
[0008] In a possible implementation, a water retaining ring is provided on the outer periphery of the rear side surface of the annular adjustment plate, and the inner diameter of the water retaining ring is larger than the outer diameter of the processing boss.
[0009] In a possible implementation, the water retaining ring and the annular adjustment plate are integrally formed.
[0010] In one possible implementation, the adjustment assembly includes a plurality of adjustment screws circumferentially arranged on the front guard plate body, the adjustment screw threads penetrate the front guard plate body and extend into the annular groove, and one end of the adjustment screw inserted into the annular groove is used to push the annular adjustment plate to move toward the side of the front cover plate.
[0011] In a possible implementation, a plurality of internally threaded sleeves are embedded in the circumference of the front guard plate body, and the threads of the plurality of adjusting screws corresponding to each other pass through the inner holes of the plurality of internally threaded sleeves.
[0012] In a possible implementation, a retaining ring is provided at the outer end of the internally threaded sleeve, and a sealing ring is provided between the retaining ring and the front end surface of the front guard plate body.
[0013] In a possible implementation manner, an adjusting nut is provided at a front end of the adjusting screw.
[0014] In a possible implementation, the inner side of the water inlet of the impeller body is provided with an inlet straight edge, and the inlet straight edge is consistent with the axial direction of the impeller body.
[0015] The utility model provides a horizontal slurry pump impeller and front guard plate with an adjustable gap structure, which has the beneficial effect that: compared with the prior art, the front side surface of the processing boss is provided with a first processing plane, and the front side surface of the assembly ring plate is provided with a second processing plane, and the first processing plane and the second processing plane together constitute a first matching plane. The adjusting component pushes the annular adjustment plate in the annular groove to move toward the first matching plane to adjust the gap between the impeller body and the front guard plate body. The utility model provides a horizontal slurry pump impeller and front guard plate with an adjustable gap structure, which can adjust the gap between the annular adjustment plate and the first matching plane through the adjusting component, and can reduce the gap between the impeller and the front guard plate as much as possible after the impeller is assembled, thereby reducing the reflux amount of slurry and improving the efficiency of the pump. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 A schematic diagram of a structure of a horizontal slurry pump with an adjustable gap between an impeller and a front guard plate provided in an embodiment of the utility model;
[0018] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.
[0019] Description of reference numerals:
[0020] 100, impeller body; 110, front cover plate; 111, processed boss; 112, assembly ring plate; 113, first matching plane; 120, inlet straight edge; 200, front guard plate body; 210, annular adjustment plate; 211, second matching plane; 212, water retaining ring; 220, internal threaded sleeve; 221, retaining ring; 222, sealing ring; 230, adjusting screw; 240, adjusting nut. DETAILED DESCRIPTION
[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0022] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.
[0023] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the utility model.
[0024] See also Figure 1 Now, a horizontal slurry pump impeller and front guard plate gap adjustable structure provided by the utility model is described. A horizontal slurry pump impeller and front guard plate gap adjustable structure, including an impeller body 100 and a front guard plate body 200, a front cover plate 110 is arranged on the water inlet side of the impeller body 100, a processing boss 111 is arranged on the inner circle of the front side of the front cover plate 110, a first processing plane is arranged on the front side of the processing boss 111, an assembly ring plate 112 is arranged on the front side of the front cover plate 110, and the assembly ring plate 112 is sleeved on the outer periphery of the processing boss 111 and is welded and fixed to the front cover plate 110, and the assembly ring plate 112 is welded and fixed to the front cover plate 110. A second processing plane is provided on the front side surface of 12, and the first processing plane and the second processing plane are coplanar to form a first matching plane 113. An annular groove is provided on the rear side surface of the front guard plate body 200, and an annular adjustment plate 210 is provided in the annular groove. An adjustment component is provided on the front guard plate body 200, and the adjustment component is provided corresponding to the annular groove. The adjustment component is used to push the annular adjustment plate 210 to move to one side of the first matching plane 113 to adjust the gap between the impeller body 100 and the front guard plate body 200.
[0025] The utility model provides a horizontal slurry pump impeller and front guard plate gap adjustable structure. Compared with the prior art, the front side of the processing boss 111 is provided with a first processing plane, and the front side of the assembly ring plate 112 is provided with a second processing plane. The first processing plane and the second processing plane together constitute a first matching plane 113. The adjusting component pushes the annular adjustment plate 210 in the annular groove to move toward the first matching plane 113 to adjust the gap between the impeller body 100 and the front guard plate body 200. The utility model provides a horizontal slurry pump impeller and front guard plate gap adjustable structure. By adjusting the gap between the annular adjustment plate 210 and the first matching plane 113 through the adjusting component, the gap between the impeller and the front guard plate can be reduced as much as possible after the impeller is assembled, the reflux amount of slurry is reduced, and the efficiency of the pump is improved.
[0026] Specifically, a second matching plane 211 is provided on the rear side of the annular adjustment plate 210, and the first matching plane 113 and the second matching plane 211 are parallel to each other, and the gap distance formed therebetween is the same, so as to avoid local contact and affect the rotation of the impeller itself.
[0027] The inner ring of the processing boss 111 has a port processing surface, and the inner diameter of the annular adjustment plate 210 is not less than the inner diameter of the processing boss 111, so as to avoid interference between the annular adjustment plate 210 and the port processing surface. The outer diameter of the annular adjustment plate 210 is larger than the outer diameter of the assembly ring plate 112, and the annular adjustment plate 210 can completely cover the first processing plane of the processing boss 111, and maximize the matching area between the first matching plane 113 and the second matching plane 211, so as to reduce the reflux of the slurry.
[0028] Preferably, a water retaining ring 212 is provided on the outer periphery of the rear side of the annular adjustment plate 210, and the inner diameter of the water retaining ring 212 is larger than the outer diameter of the machining boss 111. The water retaining ring can block the gap between the first matching plane 113 and the second matching plane 211, reducing the reflux of the slurry.
[0029] Specifically, the water retaining ring 212 and the annular adjustment plate 210 are integrally formed.
[0030] See also Figure 1 and Figure 2 The adjustment assembly includes a plurality of adjustment screws 230 circumferentially arranged on the front guard plate body 200. The adjustment screws 230 thread through the front guard plate body 200 and extend into the annular groove. One end of the adjustment screws 230 inserted into the annular groove is used to push the annular adjustment plate 210 to move toward the side of the front cover plate 110. By rotating the adjustment screws 230, the adjustment screws 230 continuously push the annular adjustment plate 210 to move toward the side of the front cover plate 110, thereby reducing the gap between the first mating plane 113 and the second mating plane 211.
[0031] In addition, a plurality of internally threaded sleeves 220 are embedded in the circumference of the front guard body 200. The internally threaded sleeves 220 can be prefabricated in the mold cavity during casting, and the metal liquid is wrapped after forming to ensure its stability in the front guard body 200. The threads of the plurality of adjusting screws 230 corresponding to each other penetrate the inner holes of the plurality of internally threaded sleeves 220, and the plurality of adjusting screws 230 can simultaneously push the annular adjusting plate 210 to keep the distance between the first mating plane 113 and the second mating plane 211 consistent.
[0032] Specifically, a retaining ring 221 is provided at the outer end of the internal threaded sleeve 220, and a sealing ring 222 is provided between the retaining ring 221 and the front end surface of the front guard body 200. The retaining ring 221 presses the sealing ring 222 against the front side surface of the front guard body 200, which can improve its sealing effect.
[0033] Preferably, an adjusting nut 240 is provided at one end of the front side of the adjusting screw 230, and the adjusting nut 240 is welded or screwed to the front end of the adjusting screw 230. The adjusting screw 230 is driven to rotate by rotating the adjusting nut 240, so that the adjusting screw 230 can be screwed into the annular groove backward, pushing the annular adjustment plate 210 to move toward the side of the front cover plate 110.
[0034] In addition, the inner side of the water inlet of the impeller body 100 is provided with an inlet straight edge 120, which is consistent with the axial direction of the impeller body 100. The inner diameter of the circle formed by the inlet straight edge 120 in the circumferential direction is the same as the inner diameter of the inner hole of the front guard plate, which can realize smooth liquid inflow and avoid turbulence of the slurry at the junction of the inner hole of the front guard plate and the inlet of the impeller.
[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A horizontal slurry pump impeller and front guard plate clearance adjustable structure, characterized in that: The invention comprises an impeller body (100) and a front guard plate body (200), wherein a front cover plate (110) is arranged on one side of a water inlet of the impeller body (100), a processing boss (111) is arranged on the inner circle of the front side surface of the front cover plate (110), a first processing plane is arranged on the front side surface of the processing boss (111), an assembly ring plate (112) is arranged on the front side surface of the front cover plate (110), the assembly ring plate (112) is sleeved on the outer periphery of the processing boss (111) and is welded and fixed to the front cover plate (110), and the front side surface of the assembly ring plate (112) is arranged A second processing plane, the first processing plane and the second processing plane are coplanar to form a first matching plane (113), the rear side surface of the front guard plate body (200) is provided with an annular groove, an annular adjustment plate (210) is provided in the annular groove, and an adjustment component is provided on the front guard plate body (200), the adjustment component is arranged corresponding to the annular groove, and the adjustment component is used to push the annular adjustment plate (210) to move to one side of the first matching plane (113) to adjust the gap between the impeller body (100) and the front guard plate body (200).
2. A structure for adjusting the gap between the impeller and the front guard plate of a horizontal slurry pump as claimed in claim 1, characterized in that: A second matching plane (211) is provided on the rear side surface of the annular adjustment plate (210), and the first matching plane (113) and the second matching plane (211) are parallel to each other.
3. The structure of adjustable gap between the impeller and the front guard plate of a horizontal slurry pump according to claim 1, characterized in that: The inner diameter of the annular adjustment plate (210) is not less than the inner diameter of the processing boss (111), and the outer diameter of the annular adjustment plate (210) is greater than the outer diameter of the assembly ring plate (112).
4. A structure for adjusting the gap between the impeller and the front guard plate of a horizontal slurry pump as claimed in claim 3, characterized in that: A water retaining ring (212) is provided on the outer periphery of the rear side surface of the annular adjustment plate (210), and the inner diameter of the water retaining ring (212) is greater than the outer diameter of the processing boss (111).
5. The structure of adjustable gap between impeller and front guard plate of a horizontal slurry pump as claimed in claim 4, characterized in that: The water retaining ring (212) and the annular adjustment plate (210) are integrally formed.
6. The structure of adjustable gap between impeller and front guard plate of a horizontal slurry pump according to claim 1, characterized in that: The adjustment assembly comprises a plurality of adjustment screws (230) circumferentially arranged on the front guard plate body (200); the adjustment screws (230) are threadedly passed through the front guard plate body (200) and extend into the annular groove; one end of the adjustment screws (230) inserted into the annular groove is used to push the annular adjustment plate (210) to move toward one side of the front cover plate (110).
7. A structure for adjusting the gap between the impeller and the front guard plate of a horizontal slurry pump as claimed in claim 6, characterized in that: A plurality of internally threaded sleeves (220) are embedded in the circumference of the front guard plate body (200), and the threads of the plurality of adjusting screws (230) corresponding to each other are passed through the inner holes of the plurality of internally threaded sleeves (220).
8. The structure of adjustable gap between the impeller and the front guard plate of a horizontal slurry pump according to claim 7, characterized in that: A retaining ring (221) is provided at the outer end of the internally threaded sleeve (220), and a sealing ring (222) is provided between the retaining ring (221) and the front end surface of the front guard plate body (200).
9. The structure of adjustable gap between impeller and front guard plate of a horizontal slurry pump according to claim 6, characterized in that: An adjusting nut (240) is disposed at one front end of the adjusting screw rod (230).
10. A structure for adjusting the gap between the impeller and the front guard plate of a horizontal slurry pump according to any one of claims 1 to 9, characterized in that: The inner side of the water inlet of the impeller body (100) is provided with an inlet straight edge (120), and the inlet straight edge (120) is consistent with the axial direction of the impeller body (100).