Coaxial welding device for double cylinders of pump body

Abstract

The utility model discloses a pump body double-barrel coaxial welding device, a pump body is coaxially provided with a first barrel and a second barrel, the coaxial welding device comprises a coaxial component for coaxially assembling and connecting the first barrel and the second barrel, and the coaxial component is further provided with a fastening component for eliminating assembling gaps between the coaxial component and the first barrel and between the coaxial component and the second barrel. The coaxial component comprises a connecting cylinder, and coaxial discs coaxially arranged in the first cylinder body and the second cylinder body in a sleeved mode are sequentially arranged at the two ends of the connecting cylinder. The fastening component is a double-head adjusting screw rod which passes through the circle center of the coaxial disc, and the end of the double-head adjusting screw rod is connected with an adjusting block which can abut against the inner wall of the first barrel body and the inner wall of the second barrel body. According to the coaxial welding device, the first barrel body and the second barrel body are coaxially assembled and connected through the coaxial component, and the assembling gaps between the coaxial component and the first barrel body and between the coaxial component and the second barrel body can be effectively eliminated through the fastening component, so that coaxial and fixed-distance assembling of the first barrel body and the second barrel body and connection operation of the first barrel body and the second barrel body and a pump body are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of pump body assembly and molding, and in particular to a pump body double-barrel coaxial welding device. Background Art

[0002] A pump is a mechanical device used to transport fluids (such as water, oil, and gas), and is widely used in industries such as industry, agriculture, construction, and healthcare. There are many types of pumps, which can be categorized in different ways. For example, positive displacement pumps transport fluids by changing the internal volume of the pump body, and mainly include reciprocating pumps and rotary pumps; dynamic pumps mainly rely on the rotation of the impeller to transport fluids, and include vane pumps (turbine pumps), etc., as well as several other pump structures.

[0003] The pump body is one of the main components of the pump. It is usually a shell containing key components such as fluid inlet and outlet, impeller and shaft. The design and manufacture of the pump body are crucial to the performance, efficiency and reliability of the pump. Figure 1 The figure shows the outer structure of the axial flow pump body. The assembly accessories outside the pump body also include the first cylinder and the second cylinder. The assembly process is as follows Figure 2 The process is as follows: an opening is opened at the bottom right side of the pump body to connect with the first cylinder. After the first cylinder is seal-welded to the opening, the second cylinder is welded to the outer side of the pump body, and the first cylinder is sleeved at the same time. The first cylinder is used to assemble the mechanical seal, and the second cylinder is used to assemble the bearing box. The bearing box is connected to the motor. The two need to have a high coaxial diameter, otherwise the mechanical seal will be easily damaged, and the pump body will vibrate greatly, which may easily lead to production safety accidents.

[0004] Since the first cylinder and the second cylinder are not connected, in order to ensure the coaxiality of the first cylinder and the second cylinder, the processing accuracy of the outer surface of the pump body and the ports of the first cylinder and the second cylinder is improved, so that the first cylinder and the second cylinder ports can achieve the coaxial state of the first cylinder and the second cylinder after they are attached to the outer surface of the pump body.

[0005] However, during the processing of the pump body and the ports of the first and second cylinders, due to the influence of processing equipment, materials and other factors, the processing errors at the outer surface of the pump body and the ports of the first and second cylinders will affect the coaxial assembly accuracy of the first and second cylinders, thereby affecting the stability and noise of the pump body in later use, and cannot ensure the long-term stable operation of the pump body. Summary of the Invention

[0006] In response to the above-mentioned problems, the present application aims to provide a pump body double-cylinder coaxial welding device, which can coaxially assemble and connect the first cylinder and the second cylinder, and eliminate the assembly gap between the two, thereby realizing the coaxial and fixed-distance assembly of the first cylinder and the second cylinder and the connection operation with the pump body.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is as follows: a pump body double-cylinder coaxial welding device, in which a first cylinder and a second cylinder are coaxially arranged on the pump body, characterized in that: the coaxial welding device includes a coaxial component for coaxially assembling and connecting the first cylinder and the second cylinder, and a fastening component is also provided on the coaxial component to eliminate the assembly gap between it and the first cylinder and the second cylinder.

[0008] Preferably, the coaxial component includes a connecting cylinder, and coaxial disks coaxially sleeved in the first cylinder and the second cylinder are sequentially provided at both ends of the connecting cylinder.

[0009] Preferably, a positioning step surface is provided on the end surface of each of the coaxial disks.

[0010] Preferably, the fastening member is a double-headed adjusting screw arranged through the center of the coaxial disk, and the ends of the double-headed adjusting screw are connected to adjusting blocks that can abut against the inner walls of the first cylinder and the second cylinder.

[0011] The beneficial effects of the present application are: the coaxial welding device connects the first cylinder and the second cylinder coaxially through a coaxial component, and can effectively eliminate the assembly gap between the coaxial component and the first cylinder and the second cylinder through a fastening component, thereby realizing the coaxial and fixed-distance assembly of the first cylinder and the second cylinder and the connection operation with the pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the pump body structure diagram.

[0013] Figure 2 This is a diagram illustrating the process of assembling and connecting the first cylinder and the second cylinder on the pump body.

[0014] Figure 3 for Figure 2 After assembly, the first cylinder and the second cylinder are not aligned with each other.

[0015] Figure 4 This is a side structural diagram of the coaxial welding device of this application.

[0016] Figure 5 This is a diagram showing the assembly of the coaxial welding device and the first cylinder of the present application.

[0017] Figure 6 This is a diagram showing the assembly of the coaxial welding device and the second cylinder of this application.

[0018] Figure 7 For this application Figure 6 After assembly, the coaxial welding device is disassembled as shown in the figure.

[0019] Figure 8 This is a diagram showing the effect of the assembly gap between the coaxial welding device and the first cylinder of the present application.

[0020] Figure 9 This is the planar structure diagram of the coaxial disk of this application.

[0021] Figure 10 This is a diagram showing the coaxial welding device of the present application being fastened against the inner wall of the first cylinder.

[0022] In the figure: 1a-Opening. DETAILED DESCRIPTION

[0023] In order to enable ordinary technicians in this field to better understand the technical solution of the present application, the technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Refer to the attached Figures 1 to 10 A pump body double-cylinder coaxial welding device is shown, in which a first cylinder 21 and a second cylinder 22 are coaxially arranged on the pump body 1. Figure 1 As shown, an opening 1a is provided at the bottom right side of the pump body 1 to connect with the first cylinder 21. After the first cylinder 21 is preferably sealed and welded to the opening, the second cylinder 22 is then welded to the outer surface of the pump body 1 and the first cylinder 21 is sleeved. In order to solve the problem that the first cylinder 21 and the second cylinder 22 of the pump body 1 are difficult to be coaxially assembled, as shown in FIG. Figure 6 As shown, the coaxial welding device includes a coaxial component that coaxially assembles and connects the first cylinder 21 and the second cylinder 22. The first cylinder 21 and the second cylinder 22 are first coaxially assembled and connected by the coaxial component. On the basis of ensuring that the two are coaxial, the two are connected to the pump body 1 at the same time as a whole, thereby solving the problem that the coaxial accuracy of the first cylinder 21 and the second cylinder 22 is affected by the processing errors of the surface and port of the pump body 1, thereby effectively improving the coaxial accuracy of the first cylinder 21 and the second cylinder 22 after assembly with the pump body 1.

[0025] When the first cylinder 21 and the second cylinder 22 are coaxially assembled and connected by a coaxial member, there is an assembly gap. Therefore, in order to further solve the assembly gap, as shown in FIG. Figure 10 As shown, a fastening member is further provided on the coaxial member to eliminate the assembly gap between the coaxial member and the first barrel 21 and the second barrel 22. The fastening member can effectively eliminate the assembly gap between the coaxial member and the first barrel 21 and the second barrel 22, further improving the coaxial accuracy of the first barrel 21 and the second barrel 22.

[0026] Specifically, such as Figure 4-6As shown, the coaxial component includes a connecting tube 3, and coaxial discs 4 coaxially sleeved in the first cylinder 21 and the second cylinder 22 are sequentially provided at both ends of the connecting tube 3. When in use, the first cylinder 21 and the second cylinder 22 are respectively sleeved on the coaxial discs 4 at both ends of the connecting tube 3, and the coaxial positioning of the first cylinder 21 and the second cylinder 22 is achieved through the connecting tube 3 and the coaxial disc 4. At the same time, by setting the length of the connecting tube 3, the coaxial discs 4 at both ends thereof are used to achieve the spacing positioning of the first cylinder 21 and the second cylinder 22, ensuring that the spacing between the two is the designed spacing. Therefore, on the basis of achieving the coaxial and spacing positioning of the first cylinder 21 and the second cylinder 22, the whole is welded to the outer surface of the pump body 1. After the welding is completed, since the inner diameter of the first cylinder 21 is smaller than that of the second cylinder 22, the connecting tube 3 and the coaxial disc 4 can be directly disassembled.

[0027] In order to further improve the spacing accuracy of the coaxial disc 4 to the first cylinder 21 and the second cylinder 22, as shown in FIG. Figure 4-5 As shown, preferably, a positioning step surface 4a is provided on the end surface of each of the coaxial discs 4. During assembly, the end surfaces of the first cylinder 21 and the second cylinder 22 are abutted against the positioning step surface 4a of the coaxial disc 4, thereby achieving a distance between the first cylinder 21 and the second cylinder 22 and improving the distance accuracy between the two.

[0028] In order to eliminate the influence of the assembly gap between the first cylinder 21 and the second cylinder 22 and the coaxial disk 4, as shown in FIG. Figure 9-10 As shown, the fastening member is a double-headed adjusting screw 5 arranged through the center of the coaxial disk 4, which is rotatably embedded in the coaxial disk 4. Preferably, the coaxial disk 4 is a half structure to facilitate the embedding of the double-headed adjusting screw 5. The ends of the double-headed adjusting screw 5 are connected with adjusting blocks 41 that can be abutted against the inner walls of the first cylinder 21 and the second cylinder 22. The outer end surface of the adjusting block 41 is an arc surface structure that can fit on the inner wall surfaces of the first cylinder 21 and the second cylinder 22. After the coaxial disk 4 is inserted into the first cylinder 21 and the second cylinder 22, the double-headed adjusting screw 5 is driven to rotate by using a long-rod wrench, and the adjusting blocks 41 at both ends thereof are synchronously moved away from and abutted against the quadrants of the first cylinder 21 and the second cylinder 22 that are symmetrical and pass through the center, thereby eliminating the assembly gap of the coaxial disk 4 and improving the assembly tightness of the coaxial disk 4 with the first cylinder 21 and the second cylinder 22. When welding with the pump body 1, the offset of the two can be avoided, thereby realizing the coaxial and fixed-distance assembly of the first cylinder 21 and the second cylinder 22 and the connection operation with the pump body 1.

[0029] The principle of the present application is: when using the coaxial welding device, first, the first cylinder 21 and the second cylinder 22 are respectively mounted on the coaxial disk 4 at both ends of the connecting cylinder 3, and the end faces of the first cylinder 21 and the second cylinder 22 are abutted against the positioning step surface 4a of the coaxial disk 4, that is, the spacing effect on the first cylinder 21 and the second cylinder 22 is achieved; then, the double-headed adjusting screw 5 is driven to rotate by using a long-rod wrench, and the adjusting blocks 41 at both ends thereof are synchronously moved away from and abutted against the quadrant points of the first cylinder 21 and the second cylinder 22 that are through the center and symmetrical, thereby achieving the elimination of the assembly gap of the coaxial disk 4, and at the same time improving the assembly tightness of the coaxial disk 4 with the first cylinder 21 and the second cylinder 22. When welding with the pump body 1, the offset of the two can be avoided, thereby achieving the coaxial and spacing assembly of the first cylinder 21 and the second cylinder 22 and the connection operation with the pump body 1.

[0030] The above shows and describes the basic principles, main features and advantages of this application. Without departing from the spirit and scope of this application, this application will also have various changes and improvements, which fall within the scope of this application.

Claims

1. A pump body double-barrel coaxial welding device, wherein a first barrel (21) and a second barrel (22) are coaxially arranged on a pump body (1), characterized in that: The coaxial welding device comprises a coaxial component for coaxially assembling and connecting the first cylinder (21) and the second cylinder (22), and a fastening component for eliminating the assembly gap between the coaxial component and the first cylinder (21) and the second cylinder (22); The coaxial component comprises a connecting cylinder (3), and coaxial disks (4) coaxially sleeved in a first cylinder (21) and a second cylinder (22) are sequentially provided at both ends of the connecting cylinder (3); A positioning step surface (4a) is provided on the end surface of each coaxial disk (4); The fastening member is a double-headed adjusting screw (5) arranged through the center of the coaxial disk (4), and an adjusting block (41) is connected to each end of the double-headed adjusting screw (5) and can abut against the inner walls of the first cylinder (21) and the second cylinder (22); the outer end surface of the adjusting block (41) is a circular arc surface structure that can be attached to the inner wall surfaces of the first cylinder (21) and the second cylinder (22).

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