Rear shell structure of pump body

Abstract

The utility model belongs to the technical field of magnetic drive pump equipment, and particularly relates to a pump body rear shell structure which comprises a shell, a first boss, a second boss and a third boss are sequentially arranged at the center position of the bottom of the shell from inside to outside, a top plate is arranged at the top of the shell, and the shell, the first boss, the second boss, the third boss and the top plate are of an integrated structure without any through hole. A second boss is arranged on the top plate, a shaft hole is formed in the center of the second boss, a mounting groove is formed above the shaft hole, a preformed hole with a downward opening is formed in the side wall of the second boss, a reinforcing rib is arranged in the preformed hole, a groove with a downward opening is formed in the side wall of the top plate, a reinforcing plate is arranged in the groove, a protruding block is arranged above the top plate, and a runner is formed in the protruding block. Through the arrangement of the components, the rear shell is stable in structure after injection molding and mold stripping, heat dissipation of the shaft end part is facilitated, and meanwhile, through the arrangement of the three bosses, the production process is more accurate, and the error rate in the installation process is lower.

Description

TECHNICAL FIELD

[0001] The utility model belongs to magnetic force pump equipment technical field, concretely relates to a pump body rear shell structure. BACKGROUND

[0002] Magnetic force pump is a kind of pump using magnetic force transmission technology to realize non-contact torque transmission, its application range is very wide, mainly applicable to conveying flammable, explosive, volatile, toxic, corrosive and valuable liquid.Pump body rear shell is an important component of magnetic force pump, after traditional rear shell injection molding, there will be certain shrinkage, resulting in the inclination of shaft with certain angle, and subtle inclination angle leads to artificial not easy to detect, after assembly is completed, when running, due to the inclination of installation angle, the shaft is eccentric, thereby leading to the larger runout tolerance, makes the wear, abnormal sound and other different degrees of problems in the running process. SUMMARY

[0003] The utility model discloses a kind of pump body rear shell structures, to solve the technical problems that the shrinkage of rear shell injection molding in prior art, resulting in the inclination of shaft with certain angle, thereby leading to wear, abnormal sound and other defects in the running process.

[0004] To achieve the above object, a kind of pump body rear shell structure provided by the utility model embodiment, characterized by: including shell, the center position of the shell bottom is sequentially provided with boss one, boss two, boss three from inside to outside, the top of the shell is provided with the top plate, the shell, boss one, boss two, boss three, top plate are integrated structure and do not have any through-hole, the center position of the boss two is provided with shaft hole, the shaft hole is provided with magnetic shaft, the shaft hole upper side is provided with installation groove, the installation groove is provided with thrust ring, the sidewall of the boss two is provided with reserved hole, the reserved hole is provided with reinforcing rib, the sidewall of the top plate is provided with recess, the recess is provided with reinforcing plate, the top plate upper side is provided with lug, the lug is formed with flow channel.

[0005] Preferably, the shaft hole is provided with a matching block, which is a long strip-shaped arc structure, with one side being rectangular and adhering to the magnetic shaft.

[0006] Preferably, the installation groove is provided with a limiting block on both sides, which is an arc structure and has one side being rectangular and facing the shaft center position of the boss two, and the limiting block limits the position of the thrust ring.

[0007] Preferably, the reserved hole is provided on the sidewall of the boss two and has an opening downward.

[0008] Preferably, the reinforcing ribs are evenly provided in the reserved hole, and the reinforcing ribs make the stress on the boss two more uniform.

[0009] Preferably, the groove opening is downwardly arranged on the sidewall of the top plate.

[0010] Preferably, the reinforcing plates are uniformly arranged in the groove, and the arrangement of the reinforcing plates forms a plurality of fan-shaped areas in the groove.

[0011] Preferably, the convex block is arranged at the top end of the top plate, a flow channel is formed on the convex block, and one end of the convex block forms a step with the top plate.

[0012] Preferably, the outer ring is arranged at the bottom of the periphery of the top plate, two annular convex strips are arranged on the outer ring, and an annular channel is formed between the two convex strips.

[0013] Preferably, the two sides of the thrust ring are provided with matching openings matched with the limiting blocks, and the lower end of the magnetic shaft is provided with an opening matched with the matching block.

[0014] The above one or more technical solutions in the pump body rear shell structure provided by the embodiment of the utility model have at least one of the following technical effects:

[0015] The pump body rear shell structure in the utility model is provided with a plurality of reinforcing ribs fixed in the reserved hole of the boss two and a plurality of reinforcing plates arranged in the groove of the top plate, so that the shrinkage of the traditional rear shell after injection molding is perfectly solved, the shaft is inclined at a certain angle, the shaft is eccentric after assembly, the runout tolerance is large, and problems such as wear and abnormal sound are caused in the running process, meanwhile, the arrangement of the boss two is more conducive to heat dissipation of the shaft end.

[0016] The pump body rear shell structure in the utility model is matched with the boss one, the boss two and the boss three, so that the rear shell has a triple positioning function, the production process is more accurate, and the error rate in the installation process is lower.

[0017] The pump body rear shell structure in the utility model is matched with the boss one, the boss two and the boss three, so that the rear shell has a triple positioning function, the production process is more accurate, and the error rate in the installation process is lower. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor under the premise of the drawings.

[0019] Figure 1 A perspective view of a pump body rear shell structure is provided in the embodiment of the utility model.

[0020] Figure 2 A perspective view of a pump body rear shell structure is provided in the embodiment of the utility model. Figure 1 An enlarged view of A in the middle.

[0021] Figure 3 A perspective view of a pump body rear shell structure is provided in the embodiment of the utility model.

[0022] Figure 4 A perspective view of a pump body rear shell structure is provided in the embodiment of the utility model. Figure 3 A sectional view of B-B in the middle.

[0023] Figure 5 A perspective view of a pump body rear shell structure is provided in the embodiment of the utility model.

[0024] In the drawing, various reference signs are as follows:

[0025] 10 - shell 11 - boss one 12 - boss two 121 - shaft hole 122 - fitting block

[0026] 123 - installation groove 124 - limiting block 125 - reserved hole 126 - reinforcing rib

[0027] 13 - boss three 14 - top plate 141 - recess 142 - reinforcing plate 143 - outer ring

[0028] 1431 - convex strip 144 - convex block 1441 - flow channel 20 - thrust ring 21 - fitting mouth

[0029] 30 - magnetic shaft 31 - gap. DETAILED DESCRIPTION

[0030] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the embodiments of the utility model, and cannot be understood as a limitation of the utility model.

[0031] In the description of the embodiments of the utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation of the utility model.

[0032] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood to indicate or imply relative importance or imply the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified and limited.

[0033] In the embodiments of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and other terms should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0034] In one embodiment of the utility model, as shown in Figures 1-5 A pump body rear shell structure is provided, which comprises a shell 10, a boss one 11, a boss two 12, a boss three 13, a top plate 14, a thrust ring 20 and a magnetic shaft 30.

[0035] The boss one 11, the boss two 12 and the boss three 13 are sequentially arranged from inside to outside at the center position of the bottom of the shell 10, the top of the shell 10 is provided with the top plate 14, the shell 10, the boss one 11, the boss two 12, the boss three 13 and the top plate 14 are integrated and do not have any through hole, the boss two 12 in the shell 10 is provided with the thrust ring 20, and the thrust ring 20 is provided with the magnetic shaft 30.

[0036] The shell 10 is a cylindrical structure, the bottom of the shell 10 is provided with the boss one 11, the boss one 11 is a circular ring and is coaxially arranged with the shell 10, the boss one 11 is arranged below the bottom surface of the shell 10, and the boss one 11 plays a role of positioning the rear shell in cooperation with the boss two 12 and the boss three 13.

[0037] The boss one 11 is provided with the boss two 12, the boss two 12 is coaxially arranged with the shell 10, the upper end of the boss two 12 is located in the cavity of the shell 10, and the lower end of the boss two 12 protrudes from the bottom surface of the shell 10, the boss two 12 plays a role of fixing the thrust ring 20 and the magnetic shaft 30, the structure of the boss two 12 plays a role of stabilizing the structure of the rear shell after the rear shell is injection molded, and simultaneously plays a role of positioning the rear shell in cooperation with the boss one 11 and the boss three 13.

[0038] The boss two 12 is provided with an axle hole 121, a matching block 122, an installation slot 123, a limiting block 124, a reserved hole 125 and a reinforcing rib 126.

[0039] The axle hole 121 is arranged at the center of the boss two 12 and coaxial with the boss two 12, and the axle hole 121 serves to install the magnetic shaft 30.

[0040] The matching block 122 is in the shape of an arc and in the shape of a cuboid, one side of which is in contact with the magnetic shaft 30, and the matching block 122 serves to assist in positioning the magnetic shaft 30.

[0041] The installation slot 123 is arranged above the axle hole 121, the diameter of the installation slot 123 is greater than that of the axle hole 121, and the installation slot 123 is coaxial with the boss two 12, and the installation slot 123 serves to install the thrust ring 20.

[0042] The limiting block 124 is arranged on both sides of the installation slot 123, and the limiting block 124 is in the shape of an arc and in the shape of a rectangle, one side of which faces the center of the boss two 12, and the limiting block 124 serves to limit the position of the thrust ring 20.

[0043] The reserved hole 125 is arranged on the side wall of the boss two 12 and opens downward, and the reserved hole 125 serves to install the reinforcing rib 126, and the arrangement of the reserved hole 125 is more conducive to heat dissipation of the shaft end.

[0044] The reserved hole 125 is uniformly provided with a plurality of reinforcing ribs 126, the arrangement of the reinforcing ribs 126 makes the stress on the boss two 12 more uniform, increases the structural stability of the boss two 12, and makes the structure of the rear shell more stable after injection molding.

[0045] The boss three 13 is arranged at the bottom of the boss two 12 and coaxial with the boss two 12, and the boss three 13 serves to cooperate with the boss one 11 and the boss two 12 to position the rear shell.

[0046] The top plate 14 is arranged at the top end of the shell 10, and the outer diameter of the top plate 14 is greater than that of the shell 10, and the top plate 14 is provided with a groove 141, a reinforcing plate 142, an outer ring 143 and a boss 144.

[0047] The groove 141 is arranged on the side wall of the top plate 14 and opens downward, and the groove 141 serves to install the reinforcing plate 142.

[0048] The reinforcing plate 142 is evenly arranged in the groove 141, the reinforcing plate 142 is arranged to form a plurality of fan-shaped areas in the groove 141, the arrangement of the reinforcing plate 142 plays a role in increasing the strength of the top plate 14, and at the same time makes the structure of the back shell after injection molding more stable, at the same time, after the top plate 14 cooperates with the noise reduction groove of the pump front cover, the fan-shaped area formed by the reinforcing plate 142 and the top plate 14 can further reduce the noise generated by the pump.

[0049] The outer ring 143 is arranged at the bottom of the periphery of the top plate 14, two annular protrusions 1431 are arranged on the outer ring 143, and an annular channel is formed between the two protrusions 1431, the outer ring 143 and the protrusions 1431 play a role in connecting the back shell and other components more closely.

[0050] The protrusion 144 is arranged at the top end of the top plate 14, a flow channel 1441 is formed on the protrusion 144, one end of the protrusion 144 forms a step with the top plate 14, which plays a role in preventing wrong positioning, and can effectively prevent the flow channel 1441 from being deviated during installation.

[0051] The thrust ring 20 is arranged in the mounting groove 123, and the two sides of the thrust ring 20 are provided with a matching port 21, which cooperates with the limiting block 124.

[0052] The magnetic shaft 30 is arranged in the shaft hole 121, and the lower end of the magnetic shaft 30 is provided with an opening 31, which cooperates with the matching block 122.

[0053] The utility model discloses a working principle: a pump body rear shell structure, through the setting of boss no. 2 12 makes the rear shell injection mold post structure stable, through being equipped with the reserved hole 125 on boss no. 2 12, and being equipped with multiple reinforcing ribs 126 fixed in the reserved hole 125, and the setting of multiple reinforcing plates 142 in the recess 141 of top plate 14, further makes the rear shell injection mold post structure stable, thereby perfect solution traditional rear shell injection mold post, there will be certain shrinkage, lead to the shaft produces certain angle's inclination, after assembling, when running, due to the inclination of installation angle makes the shaft eccentric, thereby lead to the runout tolerance is bigger, make the running process produce abrasion, abnormal sound and different degree's problem, simultaneously, the setting of the reserved hole 125 in boss no. 2 12, more conducive to the heat dissipation of shaft end position, under the cooperation of boss no. 1 11, boss no. 2 12, boss no. 3 13, make the rear shell have the effect of threefold positioning, let the production process be more accurate, and the error rate is lower in the installation process, the design of top plate 14 and bump 144 makes the step between top plate 14 and bump 144, plays the role of foolproof positioning, can effectively prevent the flow channel deviation in the installation process, and simultaneously top plate 14 is used for the sound attenuation groove of pump front cover, plays the role of sound attenuation groove baffle, simultaneously, the fan-shaped area formed by reinforcing plate 142 and top plate 14 can further reduce the noise generated by pump.

[0054] The remaining part of the embodiment is same with example one, in this embodiment, the features not explained are all explained with example one, and here will not be repeated.

[0055] The above only is the preferred embodiment of the utility model, and does not use to limit the utility model, and any modification, equivalent replacement and improvement etc. that are made in the spirit and principle of the utility model should be contained in the protection scope of the utility model.

Claims

1. A pump body back case structure, characterized by: The application relates to a shell, which is provided with a boss one, a boss two and a boss three from inside to outside at the bottom center position, is provided with a top plate at the top, is an integral structure and has no any through hole, is provided with an axle hole at the center position of the boss two, is provided with a magnetic shaft in the axle hole, is provided with a mounting groove above the axle hole, is provided with a thrust ring in the mounting groove, is provided with a reserved hole in the side wall of the boss two, is provided with a reinforcing rib in the reserved hole, is provided with a recess in the side wall of the top plate, is provided with a reinforcing plate in the recess, is provided with a convex block above the top plate, and is formed with a flow channel in the convex block.

2. A pump body rear housing structure according to claim 1, characterized in that: The axle hole is provided with a matching block, the matching block is an arc-shaped structure in a strip shape, and one side in a rectangular shape is attached to the magnetic shaft.

3. The pump housing rear structure of claim 1, wherein: The two sides of the mounting groove are provided with limiting blocks, the limiting blocks are arc-shaped structures and one side in a rectangular shape faces the axial position of the boss two, and the limiting blocks limit the position of the thrust ring.

4. The pump housing rear structure of claim 1, wherein: The reserved hole is arranged on the side wall of the boss two and has a downward opening.

5. The pump housing rear structure of claim 1, wherein: The reinforcing ribs are evenly arranged in the reserved hole, and the arrangement of the reinforcing ribs makes the stress borne by the boss two more uniform.

6. A pump housing rear shell structure according to claim 1, wherein: The recess is arranged on the side wall of the top plate and has a downward opening.

7. The pump housing rear structure of claim 1, wherein: The reinforcing plates are evenly arranged in the recess, and the arrangement of the reinforcing plates forms multiple fan-shaped areas in the recess.

8. The pump housing rear structure of claim 1, wherein: The convex block is arranged at the top end of the top plate, the convex block is formed with a flow channel, and one end of the convex block forms a step with the top plate.

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