Magnetic drive pump
By setting limit holes on the housing of the magnetic pump and forming limit projections, the stable connection between the impeller and the housing is achieved, and the problems of damage to the fixed pin and the integral molding are solved, which improves the connection stability and service life. At the same time, it reduces maintenance costs.
Patent Information
- Application Number
- CN202420951304.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-06
AI Technical Summary
The circumferential connection between the impeller and the housing in the magnetic pump is likely to cause damage or loosening of the fixed pin, increasing maintenance cost and complexity. At the same time, the integrated molding connection method needs to be replaced as a whole, increasing maintenance cost and complexity.
The limit holes penetrate the upper and lower surfaces of the housing are provided, and a limit projection is formed on the lower surface of the impeller and the upper surface of the rotating bearing. The stable connection is achieved through the matching of the limit holes and the side walls, avoiding damage to the fixed pin and integrally The overall replacement problem of molding.
It improves the connection stability between the impeller and the housing, extends the service life of the magnetic pump, and reduces maintenance costs.
Smart Images
Figure CN222208391U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a magnetic pump and belongs to the field of magnetic pumps. Background Art
[0002] A magnetic pump is a pump driven by magnetic force, which includes at least a housing, an impeller, and a rotating bearing. Based on the principle of magnetic coupling, power is transmitted through magnetic force, thus avoiding the problem of liquid leakage in traditional pumps and ensuring the complete sealing of the liquid inside the pump, which not only improves the efficiency of the pump, but also greatly improves the safety of operation.
[0003] The impeller and the housing need to be connected and fixed in the circumferential direction so that they can rotate together. A common connection method is to use a fixing pin to fix the impeller and the housing. The fixing pin is easy to install, making the connection process between the impeller and the housing quick and convenient. Another method is to form the impeller and the housing in one piece, which can reduce the number of parts inside the pump, thereby improving the overall stability and sealing of the pump.
[0004] However, both connection methods have their shortcomings. Although the connection method using a fixed pin is easy to install and maintain, the fixed pin is easily damaged or loosened due to long-term use, thus affecting the normal operation and safety of the pump. As for the one-piece connection method, although it can improve the stability of the pump, once the impeller or the casing is damaged, both must be replaced at the same time, which undoubtedly increases the maintenance cost and complexity. Utility Model Content
[0005] The utility model aims to provide a magnetic pump to improve the stability of the connection between the impeller and the casing in the circumferential direction and the service life of the magnetic pump, while reducing the maintenance cost.
[0006] In order to achieve the above object, the utility model provides the following technical solution: a magnetic pump, comprising:
[0007] A shell body, formed with limiting holes penetrating the upper and lower surfaces of the shell body;
[0008] An impeller, wherein a first limiting protrusion is formed on the lower surface of the impeller, and the first limiting protrusion is inserted into the limiting hole;
[0009] A rotary bearing, wherein a second limiting protrusion is formed on the upper surface of the rotary bearing, and the second limiting protrusion is inserted into the limiting hole;
[0010] Among them, in the circumferential and radial directions of the shell, the first limiting protrusion and the second limiting protrusion are adapted to the limiting hole after being spliced; the first limiting protrusion has a first end face and a second end face arranged oppositely, and the second limiting protrusion has a third end face and a fourth end face arranged oppositely, the first end face and the third end face abut against each other, and the second end face and the fourth end face respectively abut against the side walls of the limiting hole.
[0011] Furthermore, the limiting hole includes at least two limiting areas formed and distributed along the circumference of the shell, and one of the first limiting protrusions and one of the second limiting protrusions are inserted into each of the limiting areas.
[0012] Furthermore, at least two of the limiting areas are arranged at equal intervals.
[0013] Furthermore, a mounting hole is formed on the shell and passes through the upper and lower surfaces of the shell, the limiting hole is formed on the outside of the mounting hole in the radial direction of the shell, the rotating bearing also includes a mounting base, the second limiting protrusion is formed on the outside of the mounting base in the radial direction, and the mounting base is inserted into the mounting hole.
[0014] Furthermore, a groove is formed on the side wall of the shell, and a third limiting protrusion is formed on the bottom of the impeller, and the third limiting protrusion is inserted into the groove.
[0015] Furthermore, the groove is a spiral groove formed along the side wall of the shell.
[0016] Furthermore, the spiral direction of the groove is opposite to the rotation direction of the impeller.
[0017] Furthermore, one end of the groove close to the impeller is wider than the other end away from the impeller.
[0018] Furthermore, a positioning groove is formed on the outer side of the rotary bearing, and a fourth limiting protrusion is formed on the inner wall of the shell, and when the second limiting protrusion is inserted into the limiting hole, the fourth limiting protrusion is inserted into the positioning groove.
[0019] Furthermore, the first end surface is inclined, and the cross-section of the first limiting protrusion gradually decreases from top to bottom; the third end surface is inclined, and the cross-section of the second limiting protrusion gradually increases from top to bottom.
[0020] The beneficial effect of the utility model is that the present application sets a limiting hole on the housing that penetrates the upper and lower surfaces thereof, and forms a first limiting protrusion and a second limiting protrusion on the lower surface of the impeller and the upper surface of the rotary bearing respectively, and the first limiting protrusion and the second limiting protrusion are inserted into the limiting hole and cooperate with the side wall thereof, so as to realize rotation together, which not only avoids the damage or loosening problem that may be caused by the use of a fixing pin, but also solves the problem that the entire part needs to be replaced once part is damaged in the one-piece molding. The magnetic pump improves the stability and service life of the connection, and also reduces the maintenance cost.
[0021] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the structure of a magnetic pump shown in an embodiment of the utility model;
[0023] Figure 2 for Figure 1 A structural diagram of the magnetic pump from another perspective;
[0024] Figure 3 for Figure 2 Sectional view in the AA direction;
[0025] Figure 4 is a schematic diagram of the structure of the shell;
[0026] Figure 5 is a structural schematic diagram of the shell from another perspective;
[0027] Figure 6 is a schematic diagram of the structure of the impeller;
[0028] Figure 7 It is a structural schematic diagram of the impeller from another perspective;
[0029] Figure 8 is a schematic diagram of the structure of a rotary bearing;
[0030] Fig. 9 It is a schematic diagram of the structure when the second limiting protrusion is inserted into the limiting hole. DETAILED DESCRIPTION
[0031] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. 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.
[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0034] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0035] See also Figures 1 to 3 The magnetic pump 100 shown in a preferred embodiment of the present application includes a housing 1, an impeller 2 and a rotary bearing 3. The housing 1 is formed with a limiting hole 11 penetrating the upper and lower surfaces of the housing 1, and the lower surface of the impeller 2 is formed with a first limiting protrusion 21, and the first limiting protrusion 21 is inserted into the limiting hole 11. The upper surface of the rotary bearing 3 is formed with a second limiting protrusion 31, and the second limiting protrusion 31 is inserted into the limiting hole 11. Among them, in the circumferential and radial directions of the housing 1, the first limiting protrusion 21 and the second limiting protrusion 31 are spliced and adapted to the limiting hole 11. Specifically, the first limiting protrusion 21 has a first end face 211 and a second end face 212 that are relatively set, and the second limiting protrusion 31 has a third end face 311 and a fourth end face 312 that are relatively set. The first end face 211 and the third end face 311 abut against each other, and the second end face 212 and the fourth end face 312 respectively abut against the side walls of the limiting hole 11, so that the housing 1, the impeller 2 and the rotating bearing 3 are connected together in the circumferential direction and rotate together.
[0036] See also Figure 4 and Figure 5The limiting hole 11 includes at least two limiting areas 111 formed along the circumferential distribution of the housing 1, and at least two limiting areas 111 are arranged at equal intervals. In this embodiment, two limiting areas 111 are formed, and the limiting areas 111 are symmetrically arranged on both sides of the housing 1. Optionally, in other embodiments, the limiting areas 111 can also be three or four, but the limiting areas 111 need to be arranged at equal intervals so that the connection parts of the housing 1, the impeller 2 and the rotary bearing 3 are evenly stressed and the load capacity is improved.
[0037] In this embodiment, a first limiting protrusion 21 and a second limiting protrusion 31 are inserted into each limiting area 111. Optionally, in other embodiments, a plurality of first limiting protrusions 21 and second limiting protrusions 31 may also be inserted into one limiting area 111, so that the stability of the connection part can be enhanced, local wear can be reduced, and the force of the magnetic pump 100 can be more uniform.
[0038] See also Figure 4 and Figure 6 The side wall of the housing 1 is formed with a groove 13, and the bottom of the impeller 2 is formed with a third limiting protrusion 22, which is inserted into the groove 13 to assist the connection between the housing 1 and the impeller 2. The groove 13 is a spiral groove formed along the side wall of the housing 1, and the impeller 2 can insert the third limiting protrusion 22 into the spiral groove along the spiral direction of the spiral groove.
[0039] Furthermore, the spiral direction of the groove 13 is opposite to the rotation direction of the impeller 2. In this way, the impeller 2 can be automatically tightened by its rotational force during rotation to prevent the impeller 2 from loosening during operation, thereby improving the reliability and safety of the magnetic pump 100.
[0040] Furthermore, the end of the groove 13 close to the impeller 2 is wider than the other end away from the impeller 2, and the wider entrance provides a larger tolerance for the insertion operation, making it easier to align the entrance of the groove 13 during assembly. In addition, as the third limiting protrusion 22 is further inserted along the spiral direction of the groove 13, the width of the groove 13 gradually narrows, which can provide a tighter fit when the assembly is completed, thereby enhancing the fixing effect of the impeller 2 in the housing 1.
[0041] See also Figure 4 and Figure 8 The shell 1 is also provided with a mounting hole 12 which passes through the upper and lower surfaces of the shell 1. The limiting hole 11 is formed on the outer side of the mounting hole 12 in the radial direction of the shell 1. The rotary bearing 3 also includes a mounting base 32. The second limiting protrusion 31 is formed on the outer side of the mounting base 32 in the radial direction. The mounting base 32 is inserted into the mounting hole 12, thereby limiting the radial direction of the rotary bearing 3, so that the rotary bearing 3 cannot move radially in the shell 1.
[0042] In this embodiment, a positioning groove 33 is further formed on the outer side of the rotary bearing 3, and a fourth limiting protrusion (not shown) is formed on the inner wall of the housing 1. When the second limiting protrusion 31 is inserted into the limiting hole 11, the fourth limiting protrusion is inserted into the positioning groove 33, thereby assisting the installation of the rotary bearing 3 and the housing 1. Furthermore, the positioning grooves 33 are symmetrically arranged on the side wall of the housing 1 to achieve uniform force and improve load capacity.
[0043] During installation, the impeller 2 can be inserted into the limiting hole 11 first, and then the rotary bearing 3 can be inserted into the limiting hole 11, so that the housing 1, the impeller 2 and the rotary bearing 3 are connected together through the latch structure.
[0044] See also Fig. 9 In one embodiment, the first end surface 211 is tilted, and the cross section of the first limiting protrusion 21 gradually decreases from top to bottom, and the third end surface 311 is tilted, and the cross section of the second limiting protrusion 31 gradually increases from top to bottom. In this way, when the impeller 2 is inserted into the limiting hole 11, the upper end surface of the second limiting protrusion 31 is smaller due to the tilted third end surface 311, so that it is easy to insert into the limiting hole 11 along the a direction.
[0045] The present application provides a limiting hole 11 penetrating the upper and lower surfaces of the housing 1, and forms a first limiting protrusion 21 and a second limiting protrusion 31 on the lower surface of the impeller 2 and the upper surface of the rotary bearing 3, respectively. The first limiting protrusion 21 and the second limiting protrusion 31 are inserted into the limiting hole 11 and cooperate with the side wall thereof, so as to realize the joint rotation, which not only avoids the damage or loosening problem that may be caused by the use of a fixing pin, but also solves the problem that the entire part needs to be replaced once part is damaged in the one-piece molding. The magnetic pump 100 improves the stability and service life of the connection, and also reduces the maintenance cost.
[0046] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0047] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A magnetic pump, characterized in that: include: A shell body, formed with limiting holes penetrating the upper and lower surfaces of the shell body; An impeller, wherein a first limiting protrusion is formed on the lower surface of the impeller, and the first limiting protrusion is inserted into the limiting hole; A rotary bearing, wherein a second limiting protrusion is formed on the upper surface of the rotary bearing, and the second limiting protrusion is inserted into the limiting hole; Among them, in the circumferential and radial directions of the shell, the first limiting protrusion and the second limiting protrusion are adapted to the limiting hole after being spliced; the first limiting protrusion has a first end face and a second end face arranged oppositely, and the second limiting protrusion has a third end face and a fourth end face arranged oppositely, the first end face and the third end face abut against each other, and the second end face and the fourth end face respectively abut against the side walls of the limiting hole.
2. The magnetic pump according to claim 1, characterized in that: The limiting hole includes at least two limiting areas formed and distributed along the circumference of the shell, and one of the first limiting protrusions and one of the second limiting protrusions are inserted into each of the limiting areas.
3. The magnetic pump according to claim 2, characterized in that: At least two of the limiting areas are arranged at equal intervals.
4. The magnetic pump according to claim 2, characterized in that: The shell is also formed with a mounting hole that passes through the upper and lower surfaces of the shell, the limiting hole is formed on the outer side of the mounting hole in the radial direction of the shell, the rotating bearing also includes a mounting base, the second limiting protrusion is formed on the outer side of the mounting base in the radial direction, and the mounting base is inserted into the mounting hole.
5. The magnetic pump according to claim 1, characterized in that: A groove is formed on the side wall of the housing, and a third limiting protrusion is formed on the bottom of the impeller, and the third limiting protrusion is inserted into the groove.
6. The magnetic pump according to claim 5, characterized in that: The groove is a spiral groove formed along the side wall of the shell.
7. The magnetic pump according to claim 6, characterized in that: The spiral direction of the groove is opposite to the rotation direction of the impeller.
8. The magnetic pump according to claim 6, characterized in that: One end of the groove close to the impeller is wider than the other end far from the impeller.
9. The magnetic pump according to claim 1, characterized in that: A positioning groove is formed on the outer side of the rotary bearing, and a fourth limiting protrusion is formed on the inner wall of the shell. When the second limiting protrusion is inserted into the limiting hole, the fourth limiting protrusion is inserted into the positioning groove.
10. The magnetic pump according to claim 1, characterized in that: The first end surface is tilted, and the cross section of the first limiting protrusion gradually decreases from top to bottom; the third end surface is tilted, and the cross section of the second limiting protrusion gradually increases from top to bottom.