Machining tool for valve seat

Abstract

The utility model discloses a machining tool for a valve seat. The machining tool comprises a mounting bottom plate and a mounting panel, wherein the mounting bottom plate is suitable for being fixed to a lathe through the spindle base, a first air suction hole is formed in the mounting bottom plate, and a ventilation groove is formed in the side, away from the spindle base, of the mounting bottom plate; the mounting panel is arranged on the side, away from the spindle base, of the mounting bottom plate, and second suction holes are formed in the mounting panel corresponding to the ventilation grooves; the installation panel and the installation bottom plate are arranged in a sealed mode. The second air suction hole can communicate with the first air suction hole through the ventilation groove, the side, away from the mounting panel, of the first air suction hole is further suitable for being connected with an air extractor, and the air extractor extracts air in the ventilation groove and the second air suction hole through the first air suction opening so that the blank to be machined can be adsorbed to the side, away from the mounting bottom plate, of the mounting panel. According to the structure, repeated and tedious disassembly and assembly work does not need to be carried out, manpower and machining time are saved, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve seat processing, in particular to a processing tool for a valve seat. Background Art

[0002] The butterfly valve, also known as the flap valve, is a regulating valve that is opened and closed by rotating a disc-shaped disc around the valve shaft. It is widely used in the petroleum, chemical, and electric power industries because of its simple structure, small size, light weight, low material consumption, small installation size, rapid switching, 90° reciprocating rotation, and small driving torque. The butterfly valve is mainly composed of metal valve seats, butterfly plates, sealing rings and other components. The metal valve seat is one of the main components of the butterfly valve. The processing quality of the sealing surface on the metal valve seat determines the sealing performance of the butterfly valve, so the processing quality of the metal valve seat is crucial.

[0003] The valve seat of a butterfly valve is often processed on a lathe. When processing on a lathe, the blank to be processed is often first installed on the lathe, one side is processed first, and then the blank to be processed is removed from the lathe, turned over on the main shaft of the lathe, and the other side of the blank to be processed is processed to ensure the processing accuracy. However, the blank to be processed needs to be fixed and disassembled continuously, which is very inefficient. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is that the valve seat of the butterfly valve is often processed on a lathe, and when processing on a lathe, the blank to be processed is often first installed on the lathe, one side is processed first, and then the blank to be processed is removed from the lathe, turned over on the main shaft of the lathe, and the other side of the blank to be processed is processed to ensure the processing accuracy, but the blank to be processed needs to be fixed and disassembled continuously, and the efficiency is very low.

[0005] To this end, the utility model provides a valve seat processing tool, including:

[0006] A mounting base plate, the mounting base plate being suitable for being fixed on the lathe through the spindle base, the mounting base plate being provided with a first air suction hole, and a side of the mounting base plate away from the spindle base being provided with an air permeable groove;

[0007] An installation panel, the installation panel is arranged on a side of the installation base plate away from the spindle base, the installation panel is provided with a second air suction hole corresponding to the air permeable groove; the installation panel and the installation base plate are sealed;

[0008] Wherein, the second air suction hole can be connected with the first air suction hole through the air permeable groove, and the side of the first air suction hole away from the installation panel is also suitable for being connected to an exhaust device, and the exhaust device has the function of extracting air in the air permeable groove and the second air suction hole through the first air intake to adsorb the blank to be processed on the side of the installation panel away from the installation base plate.

[0009] Optionally, the above-mentioned air permeable groove is arranged in an arc shape, the air permeable groove is arranged in a ring shape, a plurality of the air permeable grooves are arranged, and the plurality of the air permeable grooves are mutually nested and arranged with the axis of the first air suction hole as the center of the circle.

[0010] Optionally, a plurality of the second air suction holes are provided, and the plurality of the second air suction holes are distributed on the circumference where the corresponding air permeable groove is located, and the second air suction holes located on the same circumference are evenly spaced.

[0011] Optionally, the ventilation groove located on the same concentric circle is provided with two circles of the second air suction holes correspondingly, and the two circles of the second air suction holes are respectively provided corresponding to the inner side and the outer side of the ventilation groove.

[0012] Optionally, the above-mentioned mounting panel also includes: a positioning groove, which is configured as an annular groove, and the positioning groove is opened on a side of the mounting panel away from the mounting base plate along the circumference of the second air suction hole, and the positioning groove is connected to the second air suction hole. The positioning groove has an adsorption state of accommodating the blank to be processed and sucking internal air to fix the blank to be processed inside it.

[0013] Optionally, the positioning groove comprises a first positioning surface and a second positioning surface which are coaxially arranged, the first positioning surface and the second positioning surface are arranged in a stepped shape, and the outer diameter of the first positioning surface is greater than the outer diameter of the second positioning surface.

[0014] Optionally, a first sealing groove is provided on one side of the mounting base plate close to the mounting panel and on one side of the mounting panel close to the mounting base plate, and the two first sealing grooves are arranged correspondingly, the first sealing groove is an annular groove, the first sealing groove is arranged on the outer peripheral side of the air permeable groove, and the first sealing groove is arranged concentrically with the first air suction hole.

[0015] Optionally, the above-mentioned installation panel further includes a second sealing groove and a third sealing groove; the second sealing groove and the third sealing groove are both annular grooves;

[0016] There are two second sealing grooves, which are respectively arranged on the inner side and the outer side of the first positioning surface;

[0017] There are two third sealing grooves, and the two second sealing grooves are respectively arranged on the inner side and the outer side of the second positioning surface.

[0018] Optionally, the second air suction hole is configured as a threaded hole, and the second air suction hole has an open state in which the hole is through and a closed state in which a seal is installed.

[0019] Optionally, a mounting groove is provided on a side of the mounting base plate close to the mounting panel, and a mounting platform is provided on a side of the mounting panel close to the mounting base plate corresponding to the mounting groove, and the mounting platform is inserted into the mounting groove to achieve position coordination between the mounting panel and the mounting base plate.

[0020] The technical solution provided by the utility model has the following advantages:

[0021] 1. The present embodiment provides a processing tool for a valve seat, comprising: a mounting base plate and a mounting panel; wherein the mounting base plate and the mounting panel are two circular plates in the present embodiment, and may also be plates of other shapes; the spindle base is fixed on the spindle of the lathe, and a threaded hole is provided at the outer edge position of the mounting base plate, through which the mounting base plate can be fixed to the spindle base, and a threaded hole is also provided at the outer edge position of the mounting panel corresponding to the threaded hole position on the mounting base plate, and screws are passed through the threaded holes on the mounting panel and the mounting base plate to connect the two; a first air intake hole is provided through the axial position of the mounting base plate, a ventilation groove is provided on the side of the mounting base plate close to the mounting panel, and a second air intake hole is provided through the mounting panel, and the second air intake hole is connected to the ventilation groove; when it is necessary to process the blank to be processed, the mounting base plate is first fixed to the spindle base by screws, the first air intake hole of the spindle base plate is a threaded hole, the matching self-sealing air pipe joint is fixed to the side of the first air intake port away from the mounting panel, and then the hose is connected to the The vacuum device is connected to an external vacuum device, which can be a vacuum motor. Then, after the second vacuum hole corresponds to the air permeable groove, the mounting panel is installed on the mounting base plate by screws; then, the annular blank to be processed is attached to the side of the second vacuum hole away from the mounting base plate, and the vacuum device is started to extract the air between the air permeable groove and the second vacuum hole through the first vacuum hole to form a vacuum-like environment. The atmospheric pressure presses the blank to be processed against the mounting panel to achieve multiple relative sealing of the vacuum device, the mounting base plate, the mounting panel and the blank to be processed; first, the lathe processes one side of the blank to be processed. When it needs to be turned over, it only needs to close the vacuum device so that the vacuum between the first vacuum hole, the air permeable groove and the second vacuum hole is re-introduced with air, and then the blank to be processed can be picked up and turned over to the other side, and the side corresponding to the second vacuum hole is installed on the mounting panel, and the vacuum device is restarted to perform multiple relative sealing of the vacuum device, the mounting base plate, the mounting panel and the blank to be processed; after adsorbing the other side, the remaining processing is completed by programming. Compared with the prior art, there is no need to carry out repeated and tedious disassembly and assembly work. It is only necessary to attach the blank to be processed to the installation panel and turn on the exhaust device, which saves manpower and processing time and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic diagram of the structure of the installation base plate provided in this embodiment;

[0024] Figure 2 A cross-sectional view of the mounting base plate provided in this embodiment;

[0025] Figure 3 This is a schematic diagram of the structure of the installation panel provided in this embodiment;

[0026] Figure 4 is a cross-sectional view of the installation panel provided in this embodiment;

[0027] Figure 5 A schematic diagram of the structure of installing the blank to be processed on the installation panel provided in this embodiment;

[0028] Figure 6 The embodiment provided in this embodiment Figure 5 A partial enlarged view of the middle A;

[0029] Description of reference numerals:

[0030] 1-installation base plate; 11-first air intake hole; 12-ventilation groove; 13-first sealing groove; 14-installation groove;

[0031] 2 - installation panel; 21 - second air intake hole; 22 - positioning groove; 23 - first positioning surface; 24 - second positioning surface; 25 - second sealing groove; 26 - third sealing groove; 27 - installation platform. DETAILED DESCRIPTION

[0032] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the 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 a limitation on 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.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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.

[0035] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] Example 1

[0037] This embodiment provides a valve seat processing tool, such as Figures 1 to 6As shown, it includes: a mounting base plate 1 and a mounting panel 2; wherein the mounting base plate 1 and the mounting panel 2 are two circular plates in this embodiment, and may also be plates of other shapes; the spindle base is fixed on the spindle of the lathe, and a threaded hole is provided at the outer edge position of the mounting base plate 1, through which the mounting base plate 1 can be fixed to the spindle base, and a threaded hole is also provided at the outer edge position of the mounting panel 2 corresponding to the threaded hole position on the mounting base plate 1, and screws are passed through the threaded holes on the mounting panel 2 and the mounting base plate 1 to connect the two; A first air intake hole 11 is provided through the axis position of the mounting base plate 1, a ventilation groove 12 is provided on the side of the mounting base plate 1 close to the mounting panel 2, and a second air intake hole 21 is provided through the mounting panel 2, and the second air intake hole 21 is connected with the ventilation groove 12; when the blank to be processed needs to be processed, the mounting base plate 1 is first fixed to the spindle base by screws, the first air intake hole 11 of the spindle base plate is a threaded hole, the matching self-sealing air pipe joint is fixed to the side of the first air intake port away from the mounting panel 2, and then connected to the external air extraction device through a hose. The exhaust device can be an exhaust motor. Then, after the second air suction hole 21 is aligned with the air permeable groove 12, the mounting panel 2 is mounted on the mounting base plate 1 by screws. Then, the annular blank to be processed is attached to the side of the second air suction hole 21 away from the mounting base plate 1, and the exhaust device is started to exhaust the air between the air permeable groove 12 and the second air suction hole 21 through the first air suction hole 11 to form a vacuum-like environment. The atmospheric pressure presses the blank to be processed against the mounting panel 2, thereby realizing the exhaust device, the mounting base plate 1, the mounting panel 2 and the blank to be processed. Multiple relative seals: First, the lathe processes one side of the blank to be processed. When it needs to be turned over, it is only necessary to close the vacuum device so that the vacuum between the first air suction hole 11, the air permeable groove 12 and the second air suction hole 21 can be re-introduced with air. Then, the blank to be processed can be picked up and turned over to the other side, and the side corresponding to the second air suction hole 21 is installed on the mounting panel 2. The vacuum device is restarted to perform multiple relative seals between the vacuum device, the mounting base plate 1, the mounting panel 2 and the blank to be processed; after adsorbing the other side, the remaining processing is completed by programming. Compared with the prior art, there is no need for repeated and tedious disassembly and assembly work. It is only necessary to attach the blank to be processed to the mounting panel 2 and turn on the vacuum device, which saves manpower, reduces processing time, and improves production efficiency.

[0038] The mounting panel 2 and the mounting base plate 1 are both made of aluminum structure, which is light in weight and easy to process. The mounting panel 2 can be flexibly processed and modified according to the size difference of the ring material blank to be processed.

[0039] Specifically, Figures 1 to 6As shown, the air permeable groove 12 is set in a ring shape, and a plurality of air permeable grooves 12 are provided. The plurality of air permeable grooves 12 are mutually nested and arranged with the axis of the first air suction hole 11 as the center of the circle, that is, air permeable grooves 12 with different diameters that are mutually nested are provided from the inner side close to the first air suction hole 11 to the outer side away from the first air suction hole 11; the distance between any two adjacent air permeable grooves 12 is the same; and the second air suction hole 21 is provided corresponding to the air permeable groove 12, and a plurality of second air suction holes 21 are provided on at least one concentric circle with different radii, and a plurality of second air suction holes 21 located on the same circumference are evenly spaced. Through the above-mentioned arrangement, different air permeable grooves 12 and second air suction holes 21 are provided, and different specifications of the processed blanks can be adsorbed and processed, and the adsorption effect is better, and there is no need to replace the mounting base plate 1 and the mounting panel 2, thereby indirectly improving the work efficiency.

[0040] In this embodiment, if Figures 1 to 6 As shown, the ventilation groove 12 located on the same concentric circle is correspondingly provided with two circles of second air suction holes 21, and the two circles of second air suction holes 21 are respectively provided corresponding to the inner side and the outer side of the ventilation groove 12. Through the above arrangement, the contact area between the second air suction holes 21 and the blank to be processed can be increased, thereby improving the stability of the blank to be processed being adsorbed onto the mounting panel 2.

[0041] Specifically, Figures 1 to 6 As shown, the second air suction hole 21 is set as a threaded hole, corresponding to the blank to be processed. When the corresponding second air suction hole 21 is needed to adsorb the blank to be processed, the second air suction hole 21 is in an open state, and the second air suction holes 21 that do not correspond to the blank to be processed need to be sealed with sealing screws to avoid the second air suction holes 21 that do not correspond to the blank to be processed from affecting the adsorption state of the blank to be processed if they are in an open state.

[0042] In this embodiment, if Figures 1 to 6 As shown, the mounting panel 2 is further provided with a positioning groove 22, which is an annular groove. The positioning groove 22 is correspondingly opened on the side of the mounting panel 2 away from the mounting base plate 1 along the circumference of the second air suction hole 21. The width of the positioning groove 22 is greater than the diameter of the second air suction hole 21. The positioning groove 22 is connected to the second air suction hole 21. When the blank to be processed is processed, the blank to be processed can be placed in the positioning groove 22, and the air in the second air suction hole 21 and the positioning groove 22 is sucked to fix the blank to be processed inside the positioning groove 22.

[0043] Specifically, the positioning groove 22 includes a first positioning surface 23 and a second positioning surface 24, and the first positioning surface 23 and the second positioning surface 24 are arranged in a stepped shape. Figure 6As shown, the second positioning surface 24 is arranged at the bottom end of the positioning groove 22, closer to the second air suction hole 21, and the first positioning surface 23 is arranged at the upper end of the positioning groove 22. The outer diameter of the first positioning surface 23 is larger than the outer diameter of the first positioning surface 23, in order to accommodate the blanks to be processed at different processing stages. When processing, first, the width of the annular blank to be processed is equal to the width on the first positioning surface 23, the blank to be processed is placed on the first positioning surface 23, and the processing is performed after the adsorption is completed. After the processing is completed, the upper diameter of the blank to be processed becomes smaller, less than or equal to the width of the second positioning surface 24, and the side of the blank to be processed that has been processed is placed in the second positioning surface 24, and the second processing is performed after adsorption, which not only improves the installation speed, but also clamps the blank to be processed in a groove to improve stability. Moreover, the use of the first positioning surface 23 and the second positioning surface 24 can ensure the processing concentricity. Because the overall processing tooling and the blank are light in weight, the rotation speed of the lathe can be fully utilized to ensure the roughness of the processing sealing surface.

[0044] In this embodiment, if Figures 1 to 6 As shown, a first sealing groove 13 is also provided on the mounting base plate 1 and the mounting panel 2, and the two first sealing grooves 13 are arranged correspondingly. The first sealing groove 13 is an annular groove. The first sealing groove 13 is provided on the side of the mounting base plate 1 close to the mounting panel 2 and on the side of the mounting panel 2 close to the mounting base plate 1. The inner diameter of the first sealing groove 13 is larger than the inner diameter of the outermost circle of the air permeable groove 12. When the mounting panel 2 is installed on the mounting base plate 1, a sealing ring needs to be placed in the first sealing groove 13, which can not only seal the area of ​​the air permeable groove 12, but also play a cushioning role to prevent air leakage, so that the air in the air permeable groove 12 area is sucked faster and it is easier to suck the air in the farthest area of ​​the air permeable groove 12.

[0045] A sealing groove is also provided on one side of the mounting base plate 1 close to the spindle cover plate, and a sealing ring is placed in the sealing groove to form a sealing connection with the spindle cover plate.

[0046] In this embodiment, if Figures 1 to 6 As shown, the mounting panel 2 further includes a second sealing groove 25 and a third sealing groove 26. Both the second sealing groove 25 and the third sealing groove 26 are annular grooves. Two second sealing grooves 25 are provided, which are respectively provided on the inner side and the outer side of the first positioning surface 23. When the blank to be processed is placed on the first positioning surface 23, a sealing ring needs to be placed in the second sealing groove 25 to prevent air leakage, and the friction between the blank to be processed and the first positioning surface 23 can be increased to improve stability.

[0047] There are two third sealing grooves 26, which are respectively arranged on the inner side and the outer side of the second positioning surface 24. When the blank to be processed is placed on the second positioning surface 24, a sealing ring needs to be placed in the third sealing groove 26 to prevent air leakage, and to increase the friction between the blank to be processed and the first positioning surface 23, thereby improving stability.

[0048] In this embodiment, if Figures 1 to 6 As shown, a mounting groove 14 is provided on one side of the mounting base plate 1 close to the mounting panel 2, and a mounting platform 27 is provided on one side of the mounting panel 2 close to the mounting base plate 1 corresponding to the mounting groove 14. The mounting platform 27 is inserted into the mounting groove 14 to achieve the position coordination of the mounting panel 2 and the mounting base plate 1, and the mounting groove 14 and the mounting platform 27 are concentrically arranged to ensure that the two are concentric and that eccentric vibration problems will not occur during rotation. When vacuuming, the threaded holes are evenly distributed to ensure that the ring material is flatly fixed on the mounting panel 2 during adsorption.

[0049] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. 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 implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A valve seat processing tool, characterized in that: include: A mounting base plate (1), the mounting base plate (1) being suitable for being fixed on a lathe via a spindle base, the mounting base plate (1) being provided with a first air suction hole (11), and a ventilation groove (12) being provided on a side of the mounting base plate (1) away from the spindle base; An installation panel (2), the installation panel (2) being arranged on a side of the installation base plate (1) away from the spindle base, the installation panel (2) being provided with a second air intake hole (21) corresponding to the air permeable groove (12); the installation panel (2) and the installation base plate (1) being sealed; The second air suction hole (21) can be connected to the first air suction hole (11) through the air permeable groove (12), and the side of the first air suction hole (11) away from the installation panel (2) is also suitable for being connected to an exhaust device, and the exhaust device has the function of extracting air from the air permeable groove (12) and the second air suction hole (21) through a first air intake so as to adsorb the blank to be processed on the side of the installation panel (2) away from the installation base plate (1).

2. The valve seat processing tool according to claim 1, characterized in that: The ventilation groove (12) is arranged in a ring shape, and a plurality of the ventilation grooves (12) are arranged, and the plurality of ventilation grooves (12) are mutually nested and arranged with the axis of the first air suction hole (11) as the center of the circle.

3. The valve seat processing tool according to claim 2, characterized in that: A plurality of the second air suction holes (21) are provided, and the plurality of the second air suction holes (21) are distributed on the circumference where the corresponding air permeable groove (12) is located, and the second air suction holes (21) located on the same circumference are evenly spaced.

4. The valve seat processing tool according to claim 3, characterized in that: The ventilation groove (12) located on the same concentric circle is provided with two circles of the second air suction holes (21) correspondingly, and the two circles of the second air suction holes (21) are respectively provided corresponding to the inner side and the outer side of the ventilation groove (12).

5. The valve seat processing tool according to claim 3, characterized in that: The mounting panel (2) further comprises a positioning groove (22), wherein the positioning groove (22) is arranged as an annular groove, and the positioning groove (22) is arranged on a side of the mounting panel (2) away from the mounting base plate (1) along the circumference of the second air suction hole (21), and the positioning groove (22) is arranged in communication with the second air suction hole (21), and the positioning groove (22) has an adsorption state of accommodating the blank to be processed and sucking the internal air to fix the blank to be processed inside the positioning groove (22).

6. The valve seat processing tool according to claim 5, characterized in that: The positioning groove (22) comprises a first positioning surface (23) and a second positioning surface (24) which are coaxially arranged, the first positioning surface (23) and the second positioning surface (24) being arranged in a stepped manner, and the outer diameter of the first positioning surface (23) is greater than the outer diameter of the second positioning surface (24).

7. The valve seat processing tool according to claim 1, characterized in that: A first sealing groove (13) is provided on one side of the mounting base plate (1) close to the mounting panel (2) and on one side of the mounting panel (2) close to the mounting base plate (1). The two first sealing grooves (13) are arranged correspondingly. The first sealing groove (13) is an annular groove. The first sealing groove (13) is arranged on the outer peripheral side of the air permeable groove (12). The first sealing groove (13) is arranged concentrically with the first air intake hole (11).

8. The valve seat processing tool according to claim 6, characterized in that: The installation panel (2) further comprises a second sealing groove (25) and a third sealing groove (26); the second sealing groove (25) and the third sealing groove (26) are both annular grooves; Two second sealing grooves (25) are provided, and the two second sealing grooves (25) are respectively provided on the inner side and the outer side of the first positioning surface (23); Two third sealing grooves (26) are provided, and the two second sealing grooves (25) are respectively provided on the inner side and the outer side of the second positioning surface (24).

9. The valve seat processing tool according to claim 1, characterized in that: The second air suction hole (21) is configured as a threaded hole, and the second air suction hole (21) has an open state in which the air is through and a closed state in which a sealing member is installed.

10. The valve seat processing tool according to any one of claims 1 to 9, characterized in that: A mounting groove (14) is provided on one side of the mounting base plate (1) close to the mounting panel (2), and a mounting platform (27) is provided on one side of the mounting panel (2) close to the mounting base plate (1) corresponding to the mounting groove (14); the mounting platform (27) is inserted into the mounting groove (14) to achieve positional matching between the mounting panel (2) and the mounting base plate (1).

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