Pump cover liquid inlet inclined hole machining device
By designing a pump cover inlet oblique hole machining device, the problems of inconvenient angle adjustment and clamping in the machining of large-size water pump covers oblique holes were solved, achieving stable clamping and precise angle adjustment, thus improving machining efficiency and safety.
Patent Information
- Application Number
- CN202520564941.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-27
AI Technical Summary
In large-scale water pumps, the angle requirements for machining the pump cover inlet oblique hole are difficult to adjust and the clamping is inconvenient, resulting in wasted time and workplace accidents. Furthermore, the existing manual operation is prone to drill bit breakage, affecting production efficiency and safety.
A pump cover inlet oblique hole machining device was designed, including a fixed tie rod, a drill bit, a pump cover and a fixing plate. Through the combination structure of the adjusting plate and the positioning plate, the pump cover can be stably clamped and the oblique hole angle can be precisely adjusted. It is suitable for pump covers of different specifications.
It achieves stable clamping of pump covers, facilitates angle adjustment, improves processing efficiency, avoids workplace accidents and drill bit breakage, and is suitable for processing pump covers of various specifications.
Smart Images
Figure CN223933142U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pump cover processing technology, and in particular to a pump cover inlet oblique hole processing device. Background Technology
[0002] In large-scale water pumps, the pump cover is large in size. When adopting a flushing scheme, it is necessary to divert liquid from the pump outlet to the pump chamber for self-flushing of the mechanical seal. This requires drilling an oblique hole in the upper part of the pump cover to divert the liquid in the pump outlet chamber and flush the working surface of the mechanical seal.
[0003] When machining the inlet inclined hole in the original pump cover, a slanted plate was used for support, and the operator manually drilled the inclined hole with a drilling machine. Because the inclined hole has angle requirements and is very deep, especially for the inclined hole of the pump cover of a large centrifugal pump, the long drill bit would break easily if not handled carefully, which often caused a waste of time and delays in product delivery. More seriously, it could cause workplace accidents and result in great losses. In addition, the temporary support could not adjust the angle of the inclined hole and was inconvenient for clamping.
[0004] Therefore, in order to solve the above problems, a pump cover inlet oblique hole processing device was designed. Utility Model Content
[0005] The main purpose of this utility model is to provide a pump cover inlet oblique hole processing device, which can effectively solve the problems in the background art.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A device for machining oblique holes for a pump cover inlet includes a fixed tie rod, a drill bit, a pump cover, and a fixed plate. Fixed rods are fixedly installed at both ends of the upper part of the fixed plate. An adjusting plate is rotatably connected to the front of the two fixed rods that are close to each other, and an adjusting rod is rotatably connected to the rear of the two fixed rods that are far apart from each other. Multiple limiting holes are provided at the end of the adjusting rod opposite the side of the adjusting plate. Fixing screws are installed in the limiting holes and are threadedly connected to the adjusting plate. An inner hole is provided in the middle of the front end of the adjusting plate, and a positioning plate is installed inside the inner hole. The support of the pump cover is secured within the positioning plate. A fixed tie rod is fixedly installed in the middle of the positioning plate by two locking nuts. The front end of the fixed tie rod passes through the inner hole and the pump cover and is threadedly connected to a locking nut. A pressure plate is provided between the locking nut and the pump cover.
[0008] Preferably, the lower left and right sides of the adjusting plate are provided with clearance grooves that cooperate with the front end of the fixing rod.
[0009] Preferably, the tilt angle adjustment range of the adjustment plate is between 68 and 78 degrees.
[0010] Preferably, the positioning plate includes a baffle located at the rear end of the adjusting plate. A disc is fixedly installed at the front end of the baffle and is inserted into the inner hole. The outer diameter of the disc is the same as the inner diameter of the inner hole. A limiting groove is formed in the middle of the front end of the disc. The support of the pump cover is inserted into the limiting groove. The positioning plate is available in multiple specifications to accommodate pump covers of different sizes.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] This utility model discloses a pump cover inlet oblique hole processing device. The pump cover is fixed firmly and clamped conveniently. The oblique hole angle of the pump cover is easy to adjust and the adjustment of the oblique hole angle is accurate. It is easy for personnel engaged in pump parts processing to understand and master, and it is convenient to use. Moreover, the positioning plate is equipped with multiple specifications and sizes, which are suitable for processing pump covers of different specifications. Attached Figure Description
[0013] Figure 1 This is a first-view overall structural diagram of the present invention;
[0014] Figure 2 This is a schematic diagram of the overall structure of the present invention from a second perspective;
[0015] Figure 3 This is a schematic diagram of the overall structure of the present invention from a third-person perspective;
[0016] Figure 4 This is a cross-sectional view of the present invention;
[0017] Figure 5 For the present utility model Figure 4 Enlarged diagram of point A in the middle.
[0018] In the diagram: 1. Fixed tie rod; 2. Locking nut; 3. Pressure plate; 4. Drill bit; 5. Pump cover; 6. Adjusting plate; 7. Positioning plate; 8. Adjusting rod; 9. Fixing screw; 10. Fixing rod; 11. Fixing plate; 71. Baffle; 72. Disc; 73. Limiting groove; 12. Limiting hole; 13. Inner hole. Detailed Implementation
[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0020] like Figure 1-5As shown, a pump cover inlet oblique hole processing device includes a fixed tie rod 1, a drill bit 4, a pump cover 5, and a fixed plate 11. The fixed plate 11 serves as the base of the entire device and plays a fixing role. Fixed rods 10 are fixedly installed on both the left and right ends of the upper end of the fixed plate 11. The front of the two fixed rods 10 that are close to each other are rotatably connected to an adjusting plate 6. The rear of the two fixed rods 10 that are far apart from each other are rotatably connected to adjusting rods 8. Multiple limiting holes 12 are opened at the end of the adjusting rod 8 that is opposite to the side of the adjusting plate 6. The limiting holes 12 are used to install... A fixing screw 9 is provided, which is threadedly connected to the adjusting plate 6. The adjusting plate 6 has an inner hole 13 at the center of its front end. A positioning plate 7 is installed in the inner hole 13. The support of the pump cover 5 is locked in the positioning plate 7. A fixing rod 1 is fixedly installed in the center of the positioning plate 7 by two locking nuts 2. The front end of the fixing rod 1 passes through the inner hole 13 and the pump cover 5 and is threadedly connected to the locking nut 2. A pressure plate 3 is provided between the locking nut 2 and the pump cover 5. A sliding hole is provided in the center of the pressure plate 3. The sliding hole slides on the surface of the fixing rod 1.
[0021] The lower left and right sides of the adjusting plate 6 are provided with relief grooves that cooperate with the front end of the fixing rod 10, and the relief grooves facilitate the rotation of the adjusting plate 6.
[0022] The tilt angle of the adjustment plate 6 is adjustable between 68 and 78 degrees, and is suitable for adding inclined holes of 12 to 22 degrees.
[0023] The positioning plate 7 includes a baffle 71 located at the rear end of the adjusting plate 6. A disc 72 is fixedly installed at the front end of the baffle 71. The disc 72 is inserted into the inner hole 13. The outer diameter of the disc 72 is the same as the inner diameter of the inner hole 13. A limiting groove 73 is formed in the middle of the front end of the disc 72. The support of the pump cover 5 is inserted into the limiting groove 73. Multiple positioning plates 7 are provided. The limiting groove 73 in the middle of different positioning plates 7 has different sizes, which is suitable for processing pump covers 5 of different specifications. This device is suitable for processing pump covers 5 with diameters of 150 to 400 mm.
[0024] The working principle of this utility model is as follows: When in use, the above-assembled tooling is installed on the worktable of the vertical drilling machine. The support position of the pump cover 5 to be processed is placed into the inner hole 13 of the adjusting plate 6. The pressure plate 3 is placed on the front end of the fixed tie rod 1 and pre-locked with the locking nut 2. Then, the tilt angle of the adjusting plate 6 is adjusted to adjust the position of the pump cover 5 so that the position to be drilled is vertically upward. Then, the locking nut 2 is locked, and the pressure plate 3 presses the pump cover 5 onto the adjusting plate 6. The drilling machine is started, the drill arm is adjusted so that the drill bit 4 is aligned with the drilling position, and the hole is drilled.
[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A device for machining oblique holes for pump cover liquid inlet, characterized in that: The system includes a fixed tie rod (1), a drill bit (4), a pump cover (5), and a fixed plate (11). Fixed rods (10) are fixedly installed on both the left and right ends of the upper part of the fixed plate (11). An adjusting plate (6) is rotatably connected to the front of the two fixed rods (10) that are close to each other. Adjusting rods (8) are rotatably connected to the rear of the two fixed rods (10) that are far apart from each other. Multiple limiting holes (12) are provided at the end of the adjusting rod (8) opposite to the side of the adjusting plate (6). Fixing screws (9) are installed in the limiting holes (12). The fixing screw (9) is threadedly connected to the adjusting plate (6). The adjusting plate (6) has an inner hole (13) in the middle of its front end. A positioning plate (7) is installed in the inner hole (13). The support of the pump cover (5) is stuck in the positioning plate (7). A fixing rod (1) is fixedly installed in the middle of the positioning plate (7) by two locking nuts (2). The front end of the fixing rod (1) passes through the inner hole (13) and the pump cover (5) and is threadedly connected to the locking nut (2). A pressure plate (3) is provided between the locking nut (2) and the pump cover (5).
2. The pump cover inlet oblique hole processing device according to claim 1, characterized in that: The lower left and right sides of the adjustment plate (6) are provided with clearance grooves that cooperate with the front end of the fixing rod (10).
3. The pump cover inlet oblique hole processing device according to claim 1, characterized in that: The tilt angle of the adjustment plate (6) is adjustable between 68 and 78 degrees.
4. The pump cover inlet oblique hole processing device according to claim 1, characterized in that: The positioning plate (7) includes a baffle (71), which is located at the rear end of the adjusting plate (6). A disc (72) is fixedly installed at the front end of the baffle (71). The disc (72) is inserted into the inner hole (13). The outer diameter of the disc (72) is the same as the inner diameter of the inner hole (13). A limiting groove (73) is opened in the middle of the front end of the disc (72). The support of the pump cover (5) is inserted into the limiting groove (73).