Medium-pressure injection runner plate

Abstract

The utility model discloses a medium-pressure jet runner plate which comprises a plate body, a runner hole is formed in the center of the plate body, a conical protrusion is arranged at one end of the plate body, a positioning boss is arranged at the other end of the plate body, a conical groove is formed in the positioning boss, and a plurality of arc-shaped guide blocks are evenly arranged on the positioning boss and located in the conical groove. The flow channel holes comprise the outer flow channel hole, the middle flow channel hole and the inner flow channel hole, the two ends of the middle flow channel hole are communicated with the outer flow channel hole and the inner flow channel hole respectively, the side edge of the outer flow channel hole and the side edge of the middle flow channel hole are in an arc shape, and the side edge of the inner flow channel hole is a straight edge. A plurality of arc-shaped guide blocks are evenly arranged in the conical groove, fluid is more stable through flow guiding of the conical groove, then flow guiding is conducted through the arc-shaped guide blocks, the fluid forms rotating vortexes, and compared with a traditional direct injection type structure, the generation rate of bubbles can be reduced, and the problem that the fluid is jetted discontinuously is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of jet flow channel plates, in particular to a medium-pressure jet flow channel plate. Background Art

[0002] A centrifugal pump that uses a volute as a pump casing is called a volute pump. The volute consists of a spiral volute chamber and a diffuser. The separation between these two parts is called the pump tongue. The circle passing through the starting point of the spiral line of the volute chamber is called the base circle, and its diameter is called the volute inner diameter, which is usually 1.05 to 1.08 times the outer diameter of the impeller. Its size determines the radial clearance between the pump tongue and the impeller, which affects the efficiency and performance of the pump.

[0003] The outlet end of the volute pump is generally equipped with a jet flow plate to achieve fluid ejection. Most of the existing jet flow plates directly open a cylindrical flow hole, and the fluid is ejected from the cylindrical flow hole. However, the jet flow plate with this structure is prone to bubbles and intermittent ejection. Therefore, an improved technology is urgently needed to solve this problem existing in the prior art. Utility Model Content

[0004] The purpose of the utility model is to provide a medium-pressure jet flow channel plate, the plate body is provided with a conical groove, a plurality of arc guide blocks are evenly arranged in the conical groove, the fluid is guided by the conical groove, the fluid is more stable, and then the fluid is guided by the arc guide block to form a rotating vortex, which can reduce the bubble generation rate compared with the traditional direct injection structure, thereby solving the problem of intermittent fluid ejection, thereby solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a medium-pressure jet flow channel plate, comprising a plate body, a flow channel hole is opened at the center position of the plate body, a conical protrusion is arranged at one end of the plate body, a positioning boss is arranged at the other end of the plate body, the positioning boss is opened with a conical groove, the positioning boss and a plurality of arc guide blocks are evenly arranged in the conical groove, the flow channel hole comprises an outer flow channel hole, an intermediate flow channel hole and an inner flow channel hole, the two ends of the intermediate flow channel hole are respectively connected with the outer flow channel hole and the inner flow channel hole, the side edges of the outer flow channel hole and the intermediate flow channel hole are arc-shaped, and the side edge of the inner flow channel hole is a straight edge.

[0006] Preferably, the utility model provides a medium-pressure jet flow channel plate, wherein a plurality of mounting holes are evenly opened on the periphery of the plate body.

[0007] Preferably, the utility model provides a medium-pressure jet flow channel plate, wherein all the arc-shaped guide blocks are in the same direction, and arc-shaped guide grooves are formed between any two of the arc-shaped guide blocks.

[0008] Preferably, the utility model provides a medium-pressure jet flow channel plate, wherein the inner diameter of the outer flow channel hole gradually decreases from an end away from the positioning boss to an end close to the positioning boss.

[0009] Preferably, the utility model provides a medium-pressure jet flow channel plate, wherein the inner diameter of the intermediate flow channel hole gradually decreases from an end away from the positioning boss to an end close to the positioning boss.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The plate body is provided with a conical groove, and a number of arc guide blocks are evenly arranged in the conical groove. The fluid is guided by the conical groove to make it more stable, and then guided by the arc guide block to form a rotating vortex. Compared with the traditional direct injection structure, the bubble generation rate can be reduced, thereby solving the problem of intermittent fluid spraying. At the same time, by setting conical protrusions and positioning bosses, the overall thickness is increased to ensure the anti-punching ability when used for medium and high pressures, avoid deformation, and increase the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0013] Figure 2 For attachment Figure 1 A right view structural diagram of ;

[0014] Figure 3 For attachment Figure 1 Schematic diagram of the left view structure;

[0015] Figure 4 This is a schematic diagram of the appearance structure of the utility model.

[0016] In the figure: plate body 1, conical protrusion 2, positioning boss 3, conical groove 4, arc guide block 5, outer flow channel hole 6, middle flow channel hole 7, inner flow channel hole 8, mounting hole 9. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model;

[0018] It should be noted that, in the description of the present invention, the terms "inside", "outside", "upper", "lower", "both sides", "one end", "the other end", "left" and "right" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0019] See also Figure 1-4 The utility model provides a technical solution: a medium-pressure jet flow channel plate, including a plate body 1, a flow channel hole is opened at the center of the plate body 1, a conical protrusion 2 is arranged at one end of the plate body 1, and a positioning boss 3 is arranged at the other end of the plate body 1. The positioning boss 3 has a conical groove 4, and the positioning boss 3 is evenly arranged with a plurality of arc guide blocks 5 in the conical groove 4. All arc guide blocks 5 have the same direction, and arc guide grooves are formed between two arc guide blocks 5, so that the fluid forms a rotating vortex through the arc guide groove, and the flow channel hole includes an outer flow channel hole 6, an intermediate flow channel hole 7 and an inner flow channel hole 8. The two ends of the intermediate flow channel hole 7 are divided into The outer flow channel hole 6 and the middle flow channel hole 7 are respectively connected with each other, the sides of the outer flow channel hole 6 and the middle flow channel hole 7 are arc-shaped, the inner diameter of the outer flow channel hole 6 gradually decreases from the end away from the positioning boss 3 to the end close to the positioning boss 3, so as to match the inner diameter of the external pipeline to achieve injection, the inner diameter of the middle flow channel hole 7 gradually decreases from the end away from the positioning boss 3 to the end close to the positioning boss 3, so as to match the inner diameter of the outer flow channel hole 6 to achieve a smooth transition, the side of the inner flow channel hole 8 is a straight edge, and a plurality of mounting holes 9 are evenly opened on the periphery of the plate body 1 to achieve the installation connection between the plate body and the outlet end of the volute pump by bolts.

[0020] Usage and principle: The plate body 1 is made by an integrated molding process. The plate body 1 is provided with a conical groove 4 at one end of the positioning boss 3, and evenly arranged arc guide blocks 5 are left in the conical groove 4, and an arc guide groove is formed between the two arc guide blocks 5. During installation, the plate body 1 is pressed against the outlet end of the volute pump, and the positioning boss 3 is inserted into the outlet end of the volute pump. The plate body 1 is fastened by bolts to complete the installation. When the volute pump is working, the internal impeller draws in the fluid, and then discharges it from the outlet end, passes through the conical groove 4 of the plate body 1, and is guided by the arc guide block 5 to form a rotating vortex and spray out. The utility model has a reasonable structure. A plate body 1 is provided with a conical groove 4. A plurality of arc guide blocks 5 are evenly arranged in the conical groove 4. The fluid is guided by the conical groove 4 to be more stable. Then the fluid is guided by the arc guide block 5 to form a rotating vortex. Compared with the traditional direct injection structure, the generation rate of bubbles can be reduced, thereby solving the problem of intermittent fluid ejection. At the same time, by arranging the conical protrusion 2 and the positioning boss 3, the overall thickness is increased to ensure the anti-punching ability when used for medium and high pressure, avoid deformation, and increase the service life.

[0021] The details not described in the present invention are all known technologies to those skilled in the art.

[0022] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A medium-pressure jet flow channel plate, characterized in that: The invention comprises a plate body (1), a flow channel hole is provided at the center of the plate body (1), a conical protrusion (2) is provided at one end of the plate body (1), a positioning boss (3) is provided at the other end of the plate body (1), the positioning boss (3) is provided with a conical groove (4), a plurality of arc guide blocks (5) are evenly provided on the positioning boss (3) and in the conical groove (4), the flow channel hole comprises an outer flow channel hole (6), an intermediate flow channel hole (7) and an inner flow channel hole (8), the two ends of the intermediate flow channel hole (7) are respectively connected to the outer flow channel hole (6) and the inner flow channel hole (8), the side edges of the outer flow channel hole (6) and the intermediate flow channel hole (7) are arc-shaped, and the side edge of the inner flow channel hole (8) is a straight edge.

2. A medium-pressure jet flow channel plate according to claim 1, characterized in that: A plurality of mounting holes (9) are evenly arranged on the periphery of the plate body (1).

3. The medium-pressure jet channel plate according to claim 1, characterized in that: All of the arc-shaped guide blocks (5) are in the same direction, and arc-shaped guide grooves are formed between any two of the arc-shaped guide blocks (5).

4. The medium-pressure jet channel plate according to claim 1, characterized in that: The inner diameter of the outer flow channel hole (6) gradually decreases from an end away from the positioning boss (3) to an end close to the positioning boss (3).

5. The medium-pressure jet channel plate according to claim 1, characterized in that: The inner diameter of the intermediate flow channel hole (7) gradually decreases from an end away from the positioning boss (3) to an end close to the positioning boss (3).

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