Diaphragm coupling for water pump

Abstract

The utility model provides a diaphragm coupling for a water pump, which relates to the technical field of couplings and comprises a spacing shaft, the outer surface of the spacing shaft is fixedly connected with supporting blocks, a plurality of supporting blocks are divided into two groups and are symmetrically distributed, each group of supporting blocks are distributed in an annular array, and the outer surface of each group of supporting blocks is fixedly connected with a detection ring. The outer surface of the detection ring is provided with mounting holes distributed in an annular array, the inner walls of the mounting holes are fixedly sleeved with square cylinders, the inner bottom walls of the square cylinders are fixedly connected with springs, one ends of the springs are fixedly connected with measuring rods, and one ends of the measuring rods are provided with inclined planes. The coaxiality of the water pump shaft and the motor shaft can be directly measured, the coaxiality of the water pump shaft and the motor shaft can be measured without the help of additional tools such as a dial gauge, the use is very convenient, the installation efficiency is greatly improved, and the installation cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, in particular to a diaphragm coupling for a water pump. Background Art

[0002] A diaphragm coupling is a high-performance flexible coupling used to connect two shafts and transmit power. It primarily consists of two coupling halves and a central diaphragm assembly. The diaphragm assembly, its core component, is typically composed of multiple layers of metal diaphragms. These diaphragms are often made of high-strength stainless steel, which offers excellent elasticity and corrosion resistance. Common diaphragm shapes include wavy and serrated shapes. This design allows the diaphragms to effectively compensate for axial, radial, and angular displacement. During operation, if the two connected shafts experience displacement deviations due to installation errors, thermal expansion and contraction, load variations, or other factors, the diaphragms of the diaphragm coupling can adapt to these variations through elastic deformation, ensuring smooth power transmission and effectively reducing vibration, noise, and additional loads caused by shaft misalignment, thus protecting the equipment. It is widely used in various industrial applications, including but not limited to shaft transmission systems in pumps, fans, compressors, machine tools, and other equipment. It is particularly suitable for applications requiring high transmission accuracy, stability, and reliability. During installation, diaphragm couplings require proper alignment testing.

[0003] When installing existing diaphragm couplings, a dial indicator is often used to measure whether the coaxiality of the diaphragm coupling installation meets the requirements. When using the dial indicator, two measuring units need to be fixed on the two half-couplings respectively before calibration and measurement can be performed. This is more troublesome to use, reduces installation efficiency, and increases installation costs.

[0004] Therefore, we propose a diaphragm coupling for a water pump. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art. When installing the existing diaphragm coupling, a dial indicator is often used to measure whether the coaxiality of the diaphragm coupling installation meets the requirements. When using the dial indicator, two measuring units need to be fixed on the two half-couplings respectively before calibration and measurement can be performed, which is more troublesome to use, reduces the efficiency of installation, and increases the cost of installation.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A diaphragm coupling for a water pump, comprising a spacer shaft, wherein the outer surface of the spacer shaft is fixedly connected to a support block, wherein a plurality of the support blocks are divided into two groups and are symmetrically distributed, wherein the support blocks in each group are distributed in an annular array, wherein the outer surface of each group of the support blocks is fixedly connected to a detection ring, wherein the outer surface of the detection ring is provided with mounting holes distributed in an annular array, wherein the inner wall of the mounting hole is fixedly sleeved with a square tube, wherein the inner bottom wall of the square tube is fixedly connected to a spring, wherein one end of the spring is fixedly connected to a measuring rod, wherein one end of the measuring rod is provided with an inclined surface;

[0008] The outer surface of the measuring rod is slidably connected to the inner wall of the square tube. An observation groove is provided on one side surface of the square tube. One end of the observation groove passes through and extends to the interior of the square tube. A pointer is fixedly connected to the inner bottom wall of the square tube.

[0009] Preferably, diaphragms are provided on both side surfaces of the spacer shaft, a half coupling is provided on one side surface of the diaphragm, and one end of each of the plurality of measuring rods is in contact with the outer surface of the half coupling.

[0010] Preferably, one side surface of the half coupling is provided with bolt holes distributed in a circular array, and one end of the bolt hole passes through the diaphragm and extends to one side surface of the spacer shaft.

[0011] Preferably, a screw rod is movably inserted into the inner wall of the bolt hole, and a nut is threadedly sleeved on the outer surface of one end of the screw rod.

[0012] Preferably, one side surface of the nut contacts one side surface of the spacer shaft, and one side surface of the half coupling is provided with a plug-in hole.

[0013] Preferably, the inner wall of the plug-in hole is provided with symmetrically distributed limiting grooves, and the inner wall of the plug-in hole is movably connected to a connecting shaft.

[0014] Preferably, the outer surface of the connecting shaft is fixedly connected to a limiting pin, and the outer surface of the limiting pin is movably plugged into the inner wall of the limiting groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] In the utility model, the rapid measuring device is used to achieve the purpose of measuring the inner ring diameters of bearings of different models and sizes without the need for staff to hold the measurement and repeatedly adjust it. By pressing the pressing block, the bearing to be tested can be inserted into the fixed testing rod and the movable testing rod, and then the elastic force of the supporting spring automatically drives the measuring pointer to move and measure, which not only reduces the labor of the staff, but also improves the efficiency of bearing detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic diagram of the main structure of a diaphragm coupling for a water pump provided by the utility model;

[0018] Figure 2 This is an exploded view of the diaphragm structure of a diaphragm coupling for a water pump provided by the utility model;

[0019] Figure 3 A three-dimensional diagram of the square cylinder structure of a diaphragm coupling for a water pump provided by the utility model;

[0020] Figure 4 The utility model provides a diaphragm coupling for a water pump Figure 2 A magnified view of the structure at center A.

[0021] Legend: 1. Spacer shaft; 2. Support block; 3. Detection ring; 4. Mounting hole; 5. Square tube; 6. Spring; 7. Measuring rod; 8. Inclined surface; 9. Observation slot; 10. Pointer; 11. Diaphragm; 12. Half coupling; 13. Bolt hole; 14. Screw; 15. Nut; 16. Connecting hole; 17. Limit slot; 18. Connecting shaft; 19. Limit pin. DETAILED DESCRIPTION

[0022] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to relevant references, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items. Example

[0026] like Figure 1-4 As shown, the utility model provides a technical solution: comprising a spacer shaft 1, the outer surface of the spacer shaft 1 is fixedly connected to a support block 2, a plurality of support blocks 2 are divided into two groups and are symmetrically distributed, each group of support blocks 2 is distributed in a ring array, the outer surface of each group of support blocks 2 is fixedly connected to a detection ring 3, the outer surface of the detection ring 3 is provided with mounting holes 4 distributed in a ring array, the inner wall of the mounting hole 4 is fixedly sleeved with a square tube 5, the inner bottom wall of the square tube 5 is fixedly connected to a spring 6, one end of the spring 6 is fixedly connected to a measuring rod 7, and one end of the measuring rod 7 is provided with an inclined surface 8;

[0027] The outer surface of the measuring rod 7 is slidably connected to the inner wall of the square tube 5. An observation groove 9 is provided on one side surface of the square tube 5. One end of the observation groove 9 passes through and extends to the interior of the square tube 5. A pointer 10 is fixedly connected to the inner bottom wall of the square tube 5. Among the multiple measuring rods 7, two opposite measuring rods 7 are a group. The surface of the measuring rod 7 is provided with a scale. If the installation coaxiality deviates in a certain direction, the half coupling 12 will be non-concentric with the detection ring 3 in this direction, so that in this direction, the scales read by the two measuring rods 7 through the pointer 10 are inconsistent. Example

[0028] like Figure 1-4 As shown, the utility model provides a technical solution: diaphragms 11 are provided on both side surfaces of the spacer shaft 1. The number of layers of the diaphragm 11 can be set according to actual conditions. High-strength stainless steel is mostly used. This material has good elasticity and corrosion resistance. Common shapes of the diaphragm 11 include wavy and serrated shapes. Such a design enables the diaphragm 11 to effectively compensate for axial, radial and angular displacements. A half-coupling 12 is provided on one side surface of the diaphragm 11, and one end of each of the multiple measuring rods 7 is in contact with the outer surface of the half-coupling 12.

[0029] Bolt holes 13 distributed in an annular array are formed on one side surface of the half coupling 12 . One end of the bolt hole 13 passes through the diaphragm 11 and extends to one side surface of the spacer shaft 1 .

[0030] A screw rod 14 is movably inserted into the inner wall of the bolt hole 13 , and a nut 15 is threadedly sleeved on the outer surface of one end of the screw rod 14 .

[0031] One side surface of the nut 15 contacts one side surface of the spacer shaft 1 , and one side surface of the half coupling 12 is provided with an inserting hole 16 .

[0032] The inner wall of the plug hole 16 is provided with symmetrically distributed limiting grooves 17 , and a connecting shaft 18 is movably plugged into the inner wall of the plug hole 16 .

[0033] The outer surface of the connecting shaft 18 is fixedly connected to a limiting pin 19 , and the outer surface of the limiting pin 19 is movably plugged into the inner wall of the limiting groove 17 .

[0034] By setting up multiple measuring rods, the coaxiality of the water pump shaft and the motor shaft can be measured directly without the help of additional tools such as vernier calipers. It is very convenient to use, greatly improves the efficiency of installation, and effectively reduces the cost of installation.

[0035] The working process of this utility model:

[0036] Step 1: When installing the diaphragm 11 coupling for the water pump, install the two half-couplings 12 on the water pump shaft and the motor shaft respectively, ensuring that the half-couplings 12 are firmly connected to the shafts. Then, connect the spacer shaft 1, the diaphragm 11 and the half-coupling 12 through the screw 14 and the nut 15. During the connection process, the outer surface of the half-coupling 12 will contact the inclined surface 8 of the measuring rod 7, thereby squeezing the measuring rod 7 to drive the spring 6 to contract. After the connection is completed, one end of each of the multiple measuring rods 7 contacts the outer surface of the half-coupling 12, thereby preliminarily connecting the motor shaft and the water pump shaft;

[0037] Step 2. After the initial installation is completed, one end of each of the multiple measuring rods 7 is in contact with the outer surface of the half-coupling 12. Among the multiple measuring rods 7, two opposing measuring rods 7 form a group. The surface of the measuring rods 7 is provided with a scale. If the installation coaxiality deviates in a certain direction, in that direction, the half-coupling 12 will be non-concentric with respect to the detection ring 3, so that in that direction, the scales read by the pointer 10 of the two measuring rods 7 are inconsistent, and adjustment is required at this time.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A diaphragm coupling for a water pump, comprising a spacer shaft (1), characterized in that: The outer surface of the spacer shaft (1) is fixedly connected to a support block (2), and the plurality of support blocks (2) are divided into two groups and are symmetrically distributed. The support blocks (2) of each group are distributed in an annular array. The outer surface of each group of support blocks (2) is fixedly connected to a detection ring (3), and the outer surface of the detection ring (3) is provided with mounting holes (4) distributed in an annular array. The inner wall of the mounting hole (4) is fixedly sleeved with a square tube (5), and the inner bottom wall of the square tube (5) is fixedly connected to a spring (6), and one end of the spring (6) is fixedly connected to a measuring rod (7), and one end of the measuring rod (7) is provided with an inclined surface (8); The outer surface of the measuring rod (7) is slidably connected to the inner wall of the square tube (5). An observation groove (9) is provided on one side surface of the square tube (5). One end of the observation groove (9) passes through and extends into the interior of the square tube (5). A pointer (10) is fixedly connected to the inner bottom wall of the square tube (5).

2. The diaphragm coupling for a water pump according to claim 1, characterized in that: Diaphragms (11) are provided on both side surfaces of the spacer shaft (1), a half coupling (12) is provided on one side surface of the diaphragm (11), and one end of each of the plurality of measuring rods (7) contacts the outer surface of the half coupling (12).

3. The diaphragm coupling for a water pump according to claim 2, characterized in that: Bolt holes (13) distributed in a ring array are provided on one side surface of the half coupling (12), and one end of the bolt hole (13) passes through the diaphragm (11) and extends to one side surface of the spacer shaft (1).

4. The diaphragm coupling for a water pump according to claim 3, characterized in that: A screw rod (14) is movably inserted into the inner wall of the bolt hole (13), and a nut (15) is threadedly sleeved on the outer surface of one end of the screw rod (14).

5. The diaphragm coupling for a water pump according to claim 4, characterized in that: One side surface of the nut (15) contacts one side surface of the spacer shaft (1), and one side surface of the half coupling (12) is provided with a plug hole (16).

6. The diaphragm coupling for a water pump according to claim 5, characterized in that: The inner wall of the plug hole (16) is provided with symmetrically distributed limiting grooves (17), and the inner wall of the plug hole (16) is movably connected to a connecting shaft (18).

7. The diaphragm coupling for a water pump according to claim 6, characterized in that: The outer surface of the connecting shaft (18) is fixedly connected to a limiting pin (19), and the outer surface of the limiting pin (19) is movably plugged into the inner wall of the limiting groove (17).

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