Pump cover disassembly and assembly device and disassembly and assembly method

Abstract

The present invention relates to the technical field related to pumps, and discloses a pump cover disassembly and assembly device and a disassembly and assembly method. A first lifting member is provided on the pump cover; the pump cover disassembly and assembly device includes a disassembly and assembly assembly and a lifting assembly, the disassembly and assembly assembly includes a second lifting member and a guide unit detachably connected to the pump cover, and the lifting assembly is detachably connected to the first lifting member and the second lifting member; a mounting hole is provided on the pump cover, and the second lifting member can be fixed relative to the guide unit or reciprocate along the axial direction of the mounting hole. When the pump cover is disassembled and assembled, the mounting hole can always be kept in a horizontal state, and when the parts inside the pump body are replaced, there is no need to move the entire pump to a special disassembly and assembly station for disassembly and assembly, which improves the disassembly and assembly efficiency of the pump cover, and can make the mounting hole on the pump cover coaxial with the pump shaft during the disassembly and assembly of the pump cover, ensuring that the pump cover and the pump shaft are accurately aligned, and preventing the pump body, the pump cover, the parts inside the pump body, and the sealing ring between the pump body and the pump cover from being scratched and damaged.

Description

Technical Field

[0001] The present invention relates to the technical field related to pumps, and in particular to a pump cover disassembly and assembly device and a pump cover disassembly and assembly method. Background Art

[0002] For the removal of the pump cover of a large radially split horizontal single-stage centrifugal pump, it can only be lifted and disassembled smoothly when its center of gravity is near the lifting point.

[0003] In the prior art, a special disassembly and assembly station (such as a pit) is usually built to accommodate the pump shaft extending out of the pump body, so as to realize the vertical disassembly and assembly of the pump cover of a large radially split horizontal single-stage centrifugal pump. However, if it is necessary to replace the parts inside the pump body, the entire pump must be moved to another special disassembly and assembly station to disassemble the pump, which greatly increases the maintenance cost of the user.

[0004] In addition, due to the large size of the pump body, its height is far beyond the observation range of ordinary operators. During the assembly process, it is impossible to accurately align the mounting holes on the pump shaft and pump cover, which can easily cause scratches and damage to the pump body, pump cover and pump shaft. Summary of the invention

[0005] The object of the present invention is to provide a pump cover disassembly and assembly device and method, which can realize the disassembly and assembly of the pump cover and other components in the pump body without setting a disassembly and assembly platform, and effectively align the installation holes on the pump shaft and the pump cover.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A pump cover disassembly and assembly device, wherein a first lifting member is provided on the pump cover; the device comprises a disassembly and assembly assembly and a lifting member, wherein the disassembly and assembly assembly comprises a second lifting member and a guide unit detachably connected to the pump cover, and the lifting member is detachably connected to the first lifting member and the second lifting member;

[0008] The pump cover is provided with a mounting hole, and the second lifting member can be fixed relative to the guide unit or reciprocate along the axial direction of the mounting hole, so that the central axis of the mounting hole is horizontal after the lifting assembly lifts the pump cover and the lifting assembly;

[0009] The lifting assembly is used to lift the pump cover to a position where the pump cover is allowed to be installed or detached from the pump body, so that the installation hole and the pump shaft are coaxial.

[0010] As a preferred technical solution of the above-mentioned pump cover disassembly and assembly device, the disassembly and assembly assembly also includes a counterweight unit slidably connected to the guide unit, and the second lifting member is arranged on the counterweight unit.

[0011] As a preferred technical solution of the above-mentioned pump cover disassembly and assembly device, the guide unit passes through the counterweight unit, and one end of the first fastener extends into the counterweight unit and abuts against the guide unit, so that the counterweight unit is fixed relative to the guide unit.

[0012] As a preferred technical solution of the above-mentioned pump cover disassembly and assembly device, a first limit member and a second limit member are provided on the guide unit, and the counterweight unit is located between the first limit member and the second limit member.

[0013] As a preferred technical solution of the above-mentioned pump cover disassembly and assembly device, the counterweight unit includes a counterweight block, and the counterweight block is provided with a balancing weight detachably connected thereto.

[0014] As a preferred technical solution of the above-mentioned pump cover disassembly and assembly device, the weight of the balancing weight is less than the weight of the counterweight block.

[0015] As a preferred technical solution of the above-mentioned pump cover disassembly and assembly device, the guide unit includes a connecting plate detachably connected to the pump cover, and a guide portion connected to the connecting plate, and the counterweight unit is slidably connected to the guide portion.

[0016] As a preferred technical solution of the above-mentioned pump cover disassembly and assembly device, it also includes a disassembly and assembly handle, which is detachably connected to the guide unit, and the disassembly and assembly handle is used to apply external force to make the pump cover move horizontally along the axial direction of the mounting hole to get closer to or away from the pump body.

[0017] The present invention also provides a pump cover disassembly and assembly method, which uses the pump cover disassembly and assembly device described in any of the above schemes to disassemble and assemble the pump cover, and the pump cover installation method includes the following steps:

[0018] S11, connecting the disassembly assembly to the pump cover through the guide unit;

[0019] S12, using the lifting assembly to lift the connected pump cover and the disassembly assembly, and sliding the second lifting member along the axial direction of the mounting hole to make the central axis of the mounting hole horizontal;

[0020] S13, lifting the pump cover and the disassembly assembly to a position where the pump cover and the pump body can be installed by the lifting assembly;

[0021] S14. Apply external force to the disassembly assembly to move the pump cover along the axial direction of the mounting hole so as to install the pump cover on the pump body.

[0022] As a preferred technical solution of the above-mentioned pump cover disassembly and assembly method, before executing step S13, the position of the second lifting member on the guide unit is marked as a preset disassembly and assembly position;

[0023] When disassembling the pump cover, the second lifting member is fixed to the preset disassembly and assembly position on the guide unit.

[0024] The beneficial effects of the present invention are as follows: when the pump cover disassembly and assembly device provided by the present invention is used to disassemble and assemble the pump cover, the mounting hole on the pump cover can always be kept in a horizontal state. When it is necessary to replace parts inside the pump body, there is no need to move the entire pump to a special disassembly and assembly station for disassembly and assembly, and the pump cover can be disassembled and assembled. The structure is simple and easy to use, which not only improves the disassembly and assembly efficiency of the pump cover and reduces the manpower installation cost, but also can make the mounting hole on the pump cover coaxial with the pump shaft during the disassembly and assembly of the pump cover, thereby ensuring that the pump cover and the pump shaft are accurately aligned, and preventing scratches and damage to the pump body, pump cover, parts inside the pump body, and the sealing ring between the pump body and the pump cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. 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 the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0026] Figure 1 1 is a schematic diagram of the structure of a pump cover disassembly and assembly device provided in an embodiment of the present invention;

[0027] Figure 2 is a cross-sectional view of a guide unit provided by an embodiment of the present invention;

[0028] Figure 3 It is a disassembly and assembly state diagram of the pump cover disassembly and assembly device provided in an embodiment of the present invention.

[0029] In the figure:

[0030] 1. First lifting part; 2. Lifting assembly;

[0031] 3. Disassembly and assembly components; 31. Second lifting member; 32. Connecting plate; 321. First connecting hole; 33. Guide portion; 331. First stop member; 332. Second stop member; 333. Second threaded mounting hole; 34. First bolt; 35. Counterweight block; 36. Balance weight; 37. First fastener;

[0032] 10. Pump cover; 101. Mounting hole; 20. Pump body; 30. Pump shaft. DETAILED DESCRIPTION

[0033] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, not all.

[0034] like Figures 1 to 3 As shown, this embodiment provides a pump cover disassembly and assembly device, which is mainly used for disassembling and assembling the pump cover 10 on a large radially split horizontal single-stage centrifugal pump. The pump cover 10 is provided with a first lifting member 1 and a mounting hole 101. In this embodiment, the first lifting member 1 is a first lifting ring, and the first lifting ring is threadedly connected to the pump cover 10 through a first lifting ring bolt. The above-mentioned pump cover disassembly and assembly device includes a disassembly and assembly component 3 and a lifting component 2. The disassembly and assembly component 3 includes a second lifting member 31 and a guide unit detachably connected to the pump cover 10. In this embodiment, the guide unit includes a connecting plate 32 and a guide portion 33, wherein the connecting plate 32 is provided with a plurality of circumferentially arranged first connecting holes 321, and the pump cover 10 is provided with preset connecting holes corresponding to the first connecting holes 321 one by one, and the first connecting hole 321 and the corresponding preset connecting hole are connected by a first bolt 34, so that the pump cover 10 can be detachably connected to the guide unit. In this embodiment, the connecting plate 32 is a steel plate with a through hole, and the guide portion 33 is a steel pipe. The connecting plate 32 and the guide portion 33 are welded and fixed, and the through hole on the steel plate and the steel pipe are coaxially arranged.

[0035] The lifting assembly 2 is detachably connected to the first lifting member 1 and the second lifting member 31; a mounting hole 101 is provided on the pump cover 10, and the second lifting member 31 can be fixed relative to the guide unit or reciprocate along the axial direction of the mounting hole 101, so that the lifting assembly 2 lifts the pump cover 10 and the central axis of the mounting hole 101 is horizontal after the lifting assembly 2; the lifting assembly 2 is used to lift the pump cover 10 to a position that allows the pump cover 10 to be installed or detached from the pump body 20, so that the mounting hole 101 and the pump shaft 30 are coaxial.

[0036] The process of installing the pump cover 10 using the pump cover disassembly and assembly device is as follows:

[0037] The pump cover 10 is detachably connected to the disassembly assembly 3, and the first lifting member 1 and the second lifting member 31 are lifted simultaneously by the lifting assembly 2, so that the second lifting member 31 moves axially along the mounting hole 101 to make the central axis of the mounting hole 101 horizontal, and then the second lifting member 31 is fixed relative to the guide unit; the lifting assembly 2 is used to send the pump cover 10 to a position allowing the pump cover 10 to be installed with the pump body 20, so that the mounting hole 101 and the pump shaft 30 are coaxial, so as to install the pump cover 10 on the pump body 20.

[0038] The process of disassembling the pump cover 10 using the pump cover disassembly and assembly device is as follows:

[0039] During the installation of the pump cover 10, mark the position of the second lifting member 31 on the guide unit when the central axis of the mounting hole 101 is in a horizontal state, and mark the position of the second lifting member 31 on the guide unit as the preset disassembly position; when disassembling the pump cover 10, fix the second lifting member 31 at the preset disassembly position on the guide unit, and fix the second lifting member 31 relative to the guide unit; use the lifting assembly 2 to simultaneously lift the first lifting member 1 and the second lifting member 31 to place the pump cover 10 in a position that allows it to be separated from the pump body 20, make the mounting hole 101 coaxial with the pump shaft 30, and remove the pump cover 10; finally, use the lifting assembly 2 to separate the pump cover 10 from the pump body 20.

[0040] When the pump cover disassembly and assembly device provided in this embodiment is used to disassemble and assemble the pump cover 10, the mounting hole 101 on the pump cover 10 can always be kept in a horizontal state. When it is necessary to replace the parts inside the pump body 20, there is no need to move the entire pump to a special disassembly and assembly station for disassembly and assembly, and the pump cover 10 can be disassembled and assembled. This not only improves the disassembly and assembly efficiency of the pump cover 10, but also enables the mounting hole 101 on the pump cover 10 to be coaxial with the pump shaft 30 during the disassembly and assembly of the pump cover 10, thereby ensuring that the pump cover 10 and the pump shaft 30 are accurately aligned, thereby preventing scratches and damage to the pump body 20, the pump cover 10, the parts inside the pump body 20, and the sealing ring between the pump body 20 and the pump cover 10.

[0041] Furthermore, the disassembly assembly 3 further includes a counterweight unit slidably connected to the guide unit. Specifically, the guide portion 33 penetrates the counterweight unit and is slidably connected to the counterweight unit. One end of the first fastener 37 extends into the counterweight unit and abuts against the guide portion 33, so that the counterweight unit is fixed relative to the guide unit. Preferably, the first fastener 37 is a bolt.

[0042] The second lifting member 31 is provided on the counterweight unit. Specifically, the second lifting member 31 is a second lifting ring, which is threadedly connected to the counterweight block 35 via a second lifting ring bolt so that the second lifting ring is detachably connected to the counterweight block 35 .

[0043] The guide unit is provided with a first stopper 331 and a second stopper 332, and the counterweight unit is located between the first stopper 331 and the second stopper 332. The first stopper 331 is a stopper step provided on the guide portion 33, and the second stopper 332 is a fastener, such as a bolt, threadedly connected to the guide portion 33.

[0044] As in other embodiments, the first stopper 331 may also be a fastener such as a bolt; when the connecting plate 32 and the guide portion 33 are detachable, the second stopper 332 may also be a stopper step. It should be noted that in order to ensure that the counterweight unit can be sleeved on the guide portion 33, it is required that only one of the first stopper 331 and the second stopper 332 is a stopper step.

[0045] In this embodiment, the above-mentioned counterweight unit includes a counterweight block 35. The counterweight block 35 can be set to one, two or more. When at least two counterweight blocks 35 are set, the weights of at least two counterweight blocks 35 can be equal or unequal. This embodiment takes the setting of two counterweight blocks 35 of equal weight as an example.

[0046] In order to improve the adjustment accuracy of the counterweight unit, in this embodiment, a counterweight 36 detachably connected to the counterweight block 35 is provided, and the weight of the counterweight 36 is less than the weight of the counterweight block 35. Specifically, a plurality of first threaded mounting holes are provided on the counterweight block 35, and the counterweight 36 is threadedly connected to the first threaded mounting holes, so that the counterweight 36 is detachably connected to the counterweight block 35. As for the weight and number of the selected counterweight 36, they can be set according to actual needs and are not specifically limited here.

[0047] Furthermore, the pump cover disassembly and assembly device further comprises a disassembly and assembly handle, which is detachably connected to the guide unit, and is used to apply an external force to make the pump cover 10 move horizontally along the axial direction of the mounting hole 101 to approach or move away from the pump body 20. In this embodiment, the end of the guide portion 33 away from the connecting plate 32 is provided with a second threaded mounting hole 333 extending along the axial direction thereof, and one end of the disassembly and assembly handle is threadedly connected to the second threaded mounting hole 333, so that the disassembly and assembly handle is detachably connected to the guide portion 33. Preferably, two disassembly and assembly handles are provided, and the two disassembly and assembly handles are provided at the same end of the guide portion 33 and are symmetrically arranged.

[0048] When installing the pump cover 10, external force is applied through the disassembly and assembly handle to make the pump cover 10 move horizontally along the axial direction of the mounting hole 101 to push the pump cover 10 close to the pump body 20; when removing the pump cover 10, external force is applied through the disassembly and assembly handle to make the pump cover 10 move horizontally along the axial direction of the mounting hole 101 to pull the pump cover 10 away from the pump body 20.

[0049] This embodiment also provides a pump cover disassembly method, which uses the pump cover disassembly device to disassemble the pump cover 10. The method of installing the pump cover 10 using the pump cover disassembly device includes the following steps:

[0050] S11, connecting the disassembly assembly 3 to the pump cover 10 through the guide unit;

[0051] S12, using the lifting assembly 2 to lift the connected pump cover 10 and the disassembly assembly 3, and sliding the second lifting member 31 along the axial direction of the mounting hole 101 to make the central axis of the mounting hole 101 horizontal;

[0052] S13, lifting the pump cover 10 and the disassembly assembly 3 to a position where the pump cover 10 and the pump body 20 can be installed by using the lifting assembly 2;

[0053] S14. Apply external force to the disassembly assembly 3 through the disassembly handle to move the pump cover 10 axially along the mounting hole 101 to push the pump cover 10 close to the pump body 20 and install the pump cover 10 on the pump body 20.

[0054] Furthermore, before executing step S13, the position of the second lifting member 31 on the guide unit is marked as a preset disassembly and assembly position; when the pump cover 10 is disassembled, the second lifting member 31 is fixed to the preset disassembly and assembly position on the guide unit.

[0055] The method for disassembling the pump cover 10 using the pump cover disassembly and assembly device comprises the following steps:

[0056] S21, fixing the second lifting member 31 to a preset disassembly and assembly position on the guide unit, and fixing the second lifting member 31 relative to the guide unit;

[0057] S22, using the lifting assembly 2 to simultaneously lift the first lifting member 1 and the second lifting member 31 to place the pump cover 10 in a position that allows it to be separated from the pump body 20, so that the mounting hole 101 is coaxial with the pump shaft 30;

[0058] S23, applying external force to the disassembly assembly 3 through the disassembly handle, so that the pump cover 10 moves along the axial direction of the mounting hole 101, so as to pull the pump cover 10 away from the pump body 20;

[0059] S23, using the lifting assembly 2 to separate the pump cover 10 from the pump body 20.

[0060] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. 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 claims of the present invention.

[0061] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying 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" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0062] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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.

Claims

1. A pump cover disassembly and assembly device, wherein a first lifting member (1) is provided on the pump cover (10); characterized in that: The pump cover (10) comprises a disassembly assembly (3) and a lifting assembly (2), wherein the disassembly assembly (3) comprises a second lifting member (31) and a guide unit detachably connected to the pump cover (10), the lifting assembly (2) is detachably connected to the first lifting member (1) and the second lifting member (31), the first lifting member (1) is threadedly connected to the pump cover (10), and the second lifting member (31) is arranged on the guide unit; The pump cover (10) is provided with a mounting hole (101), and the second lifting member (31) is capable of reciprocating along the axial direction of the mounting hole (101), so that the central axis of the mounting hole (101) is horizontal after the lifting assembly (2) lifts the pump cover (10) and the lifting assembly (2); The lifting assembly (2) is used to lift the pump cover (10) to a position that allows the pump cover (10) to be installed or detached from the pump body (20), so that the installation hole (101) and the pump shaft (30) are coaxial.

2. The pump cover disassembly and assembly device according to claim 1, characterized in that: The disassembly and assembly component (3) further comprises a counterweight unit slidably connected to the guide unit, and the second lifting member (31) is arranged on the counterweight unit.

3. The pump cover disassembly and assembly device according to claim 2, characterized in that: The guide unit passes through the counterweight unit, and one end of the first fastener (37) extends into the counterweight unit and abuts against the guide unit, so that the counterweight unit is fixed relative to the guide unit.

4. The pump cover disassembly and assembly device according to claim 2, characterized in that: The guide unit is provided with a first position-limiting member (331) and a second position-limiting member (332), and the counterweight unit is located between the first position-limiting member (331) and the second position-limiting member (332).

5. The pump cover disassembly and assembly device according to claim 2, characterized in that: The counterweight unit comprises a counterweight block (35), and the counterweight block (35) is provided with a balancing weight (36) detachably connected thereto.

6. The pump cover disassembly and assembly device according to claim 5, characterized in that: The weight of the balancing weight (36) is smaller than the weight of the counterweight block (35).

7. The pump cover disassembly and assembly device according to claim 2, characterized in that: The guide unit comprises a connecting plate (32) detachably connected to the pump cover (10), and a guide portion (33) connected to the connecting plate (32), and the counterweight unit is slidably connected to the guide portion (33).

8. The pump cover disassembly and assembly device according to any one of claims 1 to 7, characterized in that: It also comprises a disassembly and assembly handle, the disassembly and assembly handle being detachably connected to the guide unit, and the disassembly and assembly handle being used to apply an external force to enable the pump cover (10) to move horizontally along the axial direction of the mounting hole (101) to move closer to or away from the pump body (20).

9. A method for disassembling and assembling a pump cover, characterized in that: The pump cover (10) is disassembled and assembled using the pump cover disassembly and assembly device according to any one of claims 1 to 8, and the installation method of the pump cover (10) comprises the following steps: S11, connecting the disassembly assembly (3) to the pump cover (10) via the guide unit; S12, using the lifting assembly (2) to lift the connected pump cover (10) and the disassembly assembly (3), and sliding the second lifting member (31) along the axial direction of the mounting hole (101) to make the central axis of the mounting hole (101) horizontal; S13, lifting the pump cover (10) and the disassembly assembly (3) by means of the lifting assembly (2) to a position where the pump cover (10) and the pump body (20) can be installed; S14, applying an external force to the disassembly assembly (3) to move the pump cover (10) along the axial direction of the mounting hole (101), so as to mount the pump cover (10) on the pump body (20).

10. The pump cover disassembly and assembly method according to claim 9, characterized in that: Before executing step S13, marking the position of the second lifting member (31) on the guide unit as a preset disassembly and assembly position; When disassembling the pump cover (10), the second lifting member (31) is fixed to the preset disassembly and assembly position on the guide unit.

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