Device for guaranteeing center height of pump body

Abstract

The utility model provides a device for ensuring the center height of a pump body, which comprises a bottom plate, a supporting block and a positioning disc which are detachably connected in sequence along the Z direction, the surface, away from the supporting block, of the positioning disc is provided with at least one first outer spigot matched with an inner spigot of a pump body. All the first outer spigots are concentrically arranged; the pressing block is in contact with the end face of the inlet flange of the pump body; the pressing block and the bottom plate are connected through a fastener, and the fastener sequentially penetrates through an inner cavity of the pump body, the positioning disc and an inner cavity of the supporting block. And the measuring assembly is positioned on one side of the outlet flange of the pump body and is arranged on the bottom plate. The center height of the pump body can be ensured, and the production and manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of boring machine processing, in particular to a device for ensuring the center height of a pump body. Background Art

[0002] The pump body consists of a suction chamber and a pressure chamber. The suction chamber inlet and pressure chamber outlet are flanges for connecting to the pump's inlet and outlet pipes, respectively. The suction chamber, typically a tapered short tube or a straight pipe of constant diameter, directs water flow into the impeller and provides the required flow pattern. The pressure chamber collects the liquid flowing out of the impeller and directs it to the outlet.

[0003] Similar existing technologies are usually:

[0004] 1. Utilizing a specialized machine for processing, from blank to semi-finished product, all processing is completed in a single clamping. Advantages: Single clamping reduces transfer and waiting time, resulting in high efficiency and 100% parts interchangeability. Disadvantages: The procurement cost of specialized machines is high, requiring a large number of them for mass production, resulting in high production costs and extremely high requirements for the blank. Irregular blanks cannot be processed and will be scrapped.

[0005] 2. Use a milling machine and a common horizontal lathe to process the foot surface and flange surface in two steps.

[0006] First, on the milling machine, take the middle stop as the reference, lean it flat on the workbench, clamp it manually, align it circumferentially with the outlet flange and inlet flange plane as the reference, and the alignment error should not exceed 1mm, and then mill the bottom foot plane;

[0007] Then, on an ordinary lathe, four jaws clamp the side of the base foot, lean against the flat end face, and use the inner hole of the outlet flange as the reference for radial alignment. The alignment error should not exceed 1mm, and the dimensions of the flange outer circle, end face, sealing surface, etc. are turned.

[0008] When machining the feet on a milling machine, the outlet flange is a rough surface, so the foot surface can only be corrected visually. Furthermore, there is the problem that the pump body stop and inlet flange are not aligned. Furthermore, the pump body is hollow, so the feet and flange are either higher or lower than the pump body mid-plane. The pump body must be removed before the center height can be measured (half the mid-plane plus the distance below equals the center height), making it impossible to accurately determine and guarantee the pump body center height. Furthermore, if the pump body center height is incorrect, the final positioning based on the feet will also result in an incorrect total height, making the pump bodies non-interchangeable.

[0009] In view of the unfavorable situation that the existing technology has high processing costs or cannot guarantee the size, it is necessary for researchers to develop a device with reasonable design, simple structure, easy use, accurate positioning, reduced manufacturing costs, improved processing efficiency, and increased interchangeability of pump bodies. Summary of the Invention

[0010] The purpose of this utility model is to provide a device for ensuring the center height of the pump body, which has a reasonable design, is easy to use, accurately positions, reduces manufacturing costs, improves processing efficiency, ensures the center height of the pump body and increases the interchangeability of the pump body. The technical solution adopted is as follows:

[0011] A device for ensuring the center height of a pump body, comprising:

[0012] The bottom plate 3, the support block 11 and the positioning plate 12 are detachably connected in sequence along the Z direction;

[0013] The positioning plate 12 is provided with at least one first outer stop on its surface away from the support block 11, which cooperates with the inner stop of the pump body 15; all the first outer stops are arranged concentrically;

[0014] The compression block 7 contacts the end face of the inlet flange of the pump body 15; the compression block 7 and the base plate 3 are connected by fasteners, which pass through the inner cavity of the pump body, the positioning plate 12, and the inner cavity of the support block 11 in sequence;

[0015] And two measuring components are both arranged on the bottom plate 3, one measuring component is located on one side of the outlet flange of the pump body 15, and the other measuring component is located on one side of the foot of the pump body 15.

[0016] Preferably, the support block 11 is annular, with a second outer stop and a third outer stop respectively processed at both ends; the second outer stop cooperates with the positioning plate 12, and the third outer stop cooperates with the bottom plate 3;

[0017] The positioning plate 12 , the support block 11 and the base plate 3 are connected via a No. 1 stud 4 ; the No. 1 stud 4 cooperates with a No. 1 nut 5 , and the No. 1 nut 5 is located in the inner cavity of the pump body 15 .

[0018] Preferably, lifting holes are provided at both ends of the support block 11 .

[0019] Preferably, a positioning surface cooperating with the measuring component is provided on the base plate 3 .

[0020] Preferably, the measuring assembly at the outlet flange comprises:

[0021] The measuring plate 2 is L-shaped, with one end placed on the positioning surface and the other end extending along the Z direction;

[0022] The depth caliper 1 is arranged on a section of the measuring plate 2 extending along the Z direction, and the body of the depth caliper 1 can move along the X direction.

[0023] Preferably, the measuring base of the depth caliper 1 is clamped in the mounting groove of the measuring plate.

[0024] Preferably, the fastener is a No. 2 stud bolt 8 , and the No. 2 stud bolt 8 cooperates with a No. 2 nut 9 .

[0025] Preferably, the base plate 3 is detachably connected to the lathe guide rail.

[0026] Compared with the prior art, the advantages of the present invention are:

[0027] 1. Reduce production and manufacturing costs. When processing the same number of pump bodies, the initial investment bonus is significantly reduced, the production cost is low, and the product quality is equivalent to the level of special machine processing.

[0028] 2. Position the guide rail and the base plate, the base plate and the support block, the support block and the positioning plate, the positioning plate and the pump body, and use studs and nuts based on the clamping block to fix the entire device.

[0029] After the processing is completed, the corresponding values ​​are detected. It is easy to install and the use and maintenance costs are extremely low. The effect is equivalent to special machine processing. It is clamped once, which improves the processing accuracy, reduces labor intensity, improves work efficiency, and increases interchangeability.

[0030] The utility model is also suitable for processing similar parts that need to ensure the relative height positions of the two ends. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 To ensure the pump body is installed on the device with high center;

[0032] Figure 2 Schematic diagram of the measurement value of the depth caliper;

[0033] Figure 3 Structural diagram of the device to ensure the center height of the pump body;

[0034] Figure 4 This is the structural diagram of the pump body.

[0035] Among them, 1. Depth caliper, 2. Measuring plate, 3. Base plate;

[0036] 4. No. 1 stud, 5. No. 1 nut, 6. No. 1 spring washer;

[0037] 7. Press the block;

[0038] 8. No. 2 stud, 9. No. 2 nut, 10. No. 2 spring washer;

[0039] 11. Support block, 12. Positioning plate;

[0040] 13. T-slot bolts, 14. No. 3 nuts;

[0041] 15. Pump body. DETAILED DESCRIPTION

[0042] The following is a more detailed description of the device for ensuring the center height of the pump body of the present invention, with reference to a schematic diagram, which shows a preferred embodiment of the present invention. It should be understood that those skilled in the art can modify the present invention described herein while still achieving the beneficial effects of the present invention. Therefore, the following description should be understood as a general knowledge for those skilled in the art and not as a limitation of the present invention.

[0043] like Figures 1 to 4 , a device for ensuring the center height of a pump body, comprising:

[0044] The bottom plate 3, the support block 11 and the positioning plate 12 are detachably connected in sequence along the Z direction;

[0045] The positioning plate 12 has at least one first outer stop on its surface away from the support block 11 , which is matched with the inner stop of the pump body 15 ; all the first outer stops are arranged concentrically.

[0046] The clamping block 7 contacts the end face of the inlet flange of the pump body 15; the clamping block 7 and the base plate 3 are connected by fasteners, which pass through the inner cavity of the pump body, the positioning plate 12 and the inner cavity of the support block 11 in sequence; the fastener is a No. 2 stud 8, which cooperates with the No. 2 nut 9.

[0047] And two measuring components with the same structure are arranged on the bottom plate 3, one measuring component is located on one side of the outlet flange of the pump body 15, and the other measuring component is located on one side of the foot of the pump body 15.

[0048] Specifically, the base plate 3 is detachably connected to the lathe guide rail.

[0049] The bottom plate 3 is processed with n φ24 through holes, 5 M24 through holes, an inner stop that cooperates with the second outer stop that cooperates with the support block 11, and a positioning surface that cooperates with the measuring plate.

[0050] The M24 through hole is compatible with the No. 1 stud 4 or the No. 2 stud 8.

[0051] The through hole of φ24 is matched with the T-slot bolt 13. The thread on the T-slot bolt 13 is used to install the No. 3 nut 14.

[0052] The positioning plate 12 is provided with a plurality of first outer ends, so it can be applied to pump bodies of different specifications, that is, one first outer end is matched with a pump body of one specification.

[0053] The other end surface of the positioning plate 12 is provided with a second inner stop that cooperates with the second outer stop on the support block 11 .

[0054] The support block 11 is annular, with a second outer stop and a third outer stop respectively formed at both ends; the second outer stop cooperates with the positioning plate 12, and the third outer stop cooperates with the bottom plate 3;

[0055] The positioning plate 12 , the support block 11 and the base plate 3 are connected via a No. 1 stud 4 ; the No. 1 stud 4 cooperates with a No. 1 nut 5 , which is located in the inner cavity of the pump body 15 .

[0056] Both ends of the support block 11 are provided with lifting holes.

[0057] The measuring components at the outlet flange include:

[0058] The measuring plate 2 is L-shaped, with one end placed on the positioning surface and the other end extending along the Z direction; preferably, the measuring plate 2 is connected to the positioning surface via fasteners.

[0059] The depth caliper 1 is arranged on a section of the measuring plate 2 extending along the Z direction, and the body of the depth caliper 1 can move along the X direction. That is, the measuring base of the depth caliper 1 is clamped in the mounting groove of the measuring plate 2.

[0060] In this embodiment, only one outer stop and two depth gauges 1 are required to ensure the center height. Compared with the solution of forming multiple outer stops on the upper and lower sides of the base plate 3, the base plate 3 in this solution is light in weight.

[0061] Similarly, the measuring plate at the foot is preferably connected to the positioning surface via fasteners.

[0062] Preferably, the mounting groove on the measuring plate 2 is an ellipse extending along the Z direction, that is, its long axis extends along the Z direction to accommodate pump bodies of different specifications, and its short axis extends along the Y direction, and the measuring base of the depth caliper 1 is clamped in the Y direction.

[0063] The clamping block 7 is provided with different specifications, and the outer circle is respectively larger than the inner diameter of the pump body inlet flange by 20 to 40 mm. A φ28 through hole is processed in the middle, and the No. 2 stud 8 passes through the φ28 through hole.

[0064] Among them, the No. 1 stud 4 and the No. 2 stud 8 are both studs that comply with GB / T 5780.

[0065] Both the No. 1 nut 5 and the No. 2 nut 9 are Type I hexagonal nuts that comply with GB / T 6170.

[0066] No. 1 spring washer 6 and No. 2 spring washer 10 comply with the spring washers in GB / T 93.

[0067] The No. 3 nut 14 is a T-slot bolt that complies with GB / T 37.

[0068] Depth caliper, also known as depth vernier caliper, is a Type I depth caliper that complies with GB / T 21388.

[0069] The working principle of this utility model is as follows:

[0070] Step 1. Place the base plate 3 on the lathe guide rail, ensuring that the finished side surface (long side) of the base plate 3 is parallel to the corresponding surface of the guide rail (that is, ensuring that the distance between the side surface of the base plate and the corresponding surface of the guide rail remains unchanged), and use 4 M20×100 T-slot bolts 13 to connect the machine tool guide rail and this base plate 3 with No. 3 nuts 14.

[0071] That is Figure 1 As shown in the figure, if there are 7 T-slots on the lathe guide rail, only a few of them can be used.

[0072] like Figure 2 As shown, along the Y direction, the T-slot is a through slot, and the T-slot bolt 13 enters the T-slot from one end of the T-slot along the Y direction.

[0073] Step 2: Install the No. 1 stud 4 and the No. 2 stud 8 on the base plate 3 respectively.

[0074] Step 3: After the support block 11 and the positioning plate 12 are respectively installed in a stopper positioning manner, the No. 1 stud 4 and the No. 2 stud 8 both pass through the positioning plate 12.

[0075] Step 4: Fix the support block 11 and the positioning plate 12 with a No. 1 nut 5 (I-type hexagonal nut) and a No. 1 standard spring washer 6 (standard spring washer).

[0076] At this time, the base plate 3, the support block 11 and the positioning plate 12 are fixed into one body.

[0077] Due to different specifications of the positioning stoppers, there is a case where the support block 11 is configured with multiple positioning discs 12 or is combined with multiple positioning discs 12 .

[0078] Step 5: Place the pump body 15 on the positioning plate 12, with its stopper fitting with the stopper of the positioning plate 12.

[0079] Step 6: Align the end face of the outlet flange.

[0080] That is, the first center line of the pump body is arranged horizontally and the second center line is arranged vertically, so that the tool can process the outlet flange easily.

[0081] Step 7: Use the clamping block 7, No. 2 nut 9 (I-type hexagonal nut), and No. 2 spring washer 10 (standard spring washer) to position the entire device and the pump body.

[0082] That is, the clamping block 7 is covered on the end face of the inlet flange of the pump body 15, the No. 2 stud 8 passes through the clamping block 7, and then the No. 2 spring washer 10 and the No. 2 nut 9 are installed.

[0083] The tool rotates to start processing. After the outlet flange of the pump body 15 is processed, place one side of the measuring plate 2 on the bottom plate 3 and measure with the depth caliper 1 to ensure that the outlet height = 650-measured value b-the thickness d of the measuring plate, which is consistent with the drawing requirements.

[0084] Here, 650 refers to the distance from the second center line to the outer end surface of the measuring plate 2.

[0085] After the first processing of the outlet flange, move the ruler toward the outlet flange until the ruler contacts the outlet flange end, and read the depth dimension, which is the measured value b1.

[0086] If the thickness d of the 650-b1-measuring plate is greater than the outlet height H required by the drawing, the outlet flange shall be processed a second time and then measured again.

[0087] The above steps are repeated until the thickness d=H of the 650-bn-measured plate is reached.

[0088] In other embodiments, other measuring elements, such as a ruler, may also be installed on the measuring plate 2 .

[0089] Correspondingly, the tool does not move in the X direction, and the lathe guide rail is rotated 180° to process the bottom foot of the pump body 15 .

[0090] The lathe guide rail is mounted on a disc, which is connected to the output end of a rotating member, allowing the disc to rotate. The lathe guide rail, the disc, and the rotating member are all known in the art. The rotating member can be a motor.

[0091] After processing the foot of the pump body 15, place one side of another measuring plate against the bottom plate and measure with a depth caliper near the foot to ensure that the center height = 450-measurement value a-thickness d of the measuring plate at the foot, which is consistent with the drawing requirements.

[0092] Here, 450 refers to the distance from the second center line to the outer end surface of the measuring plate 2 at the bottom.

[0093] The measurement steps for the depth caliper at the foot are the same as those for depth caliper 1.

[0094] The principle for determining the center height is the same as that for determining the outlet height.

[0095] In this embodiment, the radial direction is positioned by a stop, and the positioning is accurate, which fully guarantees the outlet height and center height of the pump body. At a very low cost, it solves the problem that the original size cannot be guaranteed even if special machine processing or several clampings are required. The effect is obvious and the interchangeability of the pump body is greatly increased.

[0096] The above description is merely a preferred embodiment of the present invention and does not limit the present invention in any way. Any person skilled in the art who, without departing from the scope of the present invention, makes any equivalent substitution, modification, or other variation to the technical solution and technical content disclosed herein shall be deemed to fall within the scope of the present invention and remain within the scope of protection of the present invention.

Claims

1. A device for ensuring the center height of a pump body, characterized in that: include: The bottom plate (3), the support block (11) and the positioning plate (12) are detachably connected in sequence along the Z direction; The positioning plate (12) is provided with at least one first outer stop on its surface away from the support block (11) and matched with the inner stop of the pump body (15); all the first outer stops are arranged concentrically; A pressing block (7) contacts the end face of the inlet flange of the pump body (15); the pressing block (7) and the base plate (3) are connected by fasteners, and the fasteners pass through the inner cavity of the pump body, the positioning plate (12), and the inner cavity of the support block (11) in sequence; and two measuring assemblies, both of which are arranged on the bottom plate (3), wherein one measuring assembly is located on one side of the outlet flange of the pump body (15), and the other measuring assembly is located on one side of the foot of the pump body (15).

2. The device for ensuring the center height of the pump body according to claim 1, characterized in that: The support block (11) is annular, and has a second outer stop and a third outer stop processed at both ends; the second outer stop cooperates with the positioning plate (12), and the third outer stop cooperates with the bottom plate (3); The positioning plate (12), the support block (11) and the base plate (3) are connected via a No. 1 stud bolt (4); the No. 1 stud bolt (4) cooperates with a No. 1 nut (5), and the No. 1 nut (5) is located in the inner cavity of the pump body (15).

3. The device for ensuring the center height of the pump body according to claim 2, characterized in that: Both ends of the support block (11) are provided with lifting holes.

4. The device for ensuring the center height of the pump body according to claim 1, characterized in that: The bottom plate (3) is provided with a positioning surface that cooperates with the measuring component.

5. The device for ensuring the center height of the pump body according to claim 4, characterized in that: The measuring assembly at the outlet flange comprises: The measuring plate (2) is L-shaped, with one end placed on the positioning surface and the other end extending along the Z direction; A depth caliper (1) is arranged on a section of a measuring plate (2) extending along the Z direction, and the body of the depth caliper (1) can move along the X direction.

6. The device for ensuring the center height of the pump body according to claim 5, characterized in that: The measuring base of the depth caliper (1) is clamped in the mounting groove of the measuring plate.

7. The device for ensuring the center height of the pump body according to claim 1, characterized in that: The fastener is a No. 2 stud bolt (8), and the No. 2 stud bolt (8) cooperates with a No. 2 nut (9).

8. The device for ensuring the center height of the pump body according to claim 1, characterized in that: The base plate (3) is detachably connected to the lathe guide rail.

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