A device for treating sand adhering to the inner cavity of electro-hydraulic valve castings

Abstract

This utility model discloses a device for treating sand adhering to the inner cavity of electro-hydraulic valve castings, relating to the field of casting processing technology. It includes a base rod with a connecting rod fixedly installed at its lower end and an mounting block fixedly installed at its upper end. A straight hole cleaning head, an inclined hole cleaning head, and an annular and spiral oil passage cleaning head are movably mounted on the outside of the mounting block. These cleaning heads are movably connected to pre-installed mounting components inside the mounting block, and the mounting components have built-in anti-detachment components. The cleaning tool of this utility model adopts a modular design, simplifying the structure. By changing different cleaning heads, it can adapt to the cleaning needs of straight holes, inclined holes, annular and spiral oil passages, reducing tool manufacturing and maintenance costs. The overall structure of the device is simple, highly applicable, and can effectively clean sand adhering to the inner cavity of electro-hydraulic valve castings, improving casting quality, reducing scrap rate, and facilitating enterprise promotion and application.

Description

Technical Field

[0001] This utility model relates to the field of casting processing technology, specifically to a device for treating sand adhering to the inner cavity of an electro-hydraulic valve casting. Background Technology

[0002] Electro-hydraulic valve castings, as key components of automated control actuators, are widely used in pipeline storage and transportation systems in the petroleum, chemical, metallurgical, power, and food industries due to their advantages such as linear control and uniform response.

[0003] In casting production, electro-hydraulic valve castings are prone to sand adhesion problems in their inner cavities. The oil passages in these cavities have various complex structures such as straight holes, oblique holes, annular holes, and spirals. Conventional sandblasting processes are difficult to effectively deal with the stubborn sand adhesion in these complex oil passages, which will affect the dimensional accuracy and surface roughness of the castings, hinder subsequent processing, and even lead to the scrapping of castings, reducing production efficiency and increasing enterprise costs.

[0004] Therefore, it is necessary to invent a device for treating sand adhering to the inner cavity of electro-hydraulic valve castings to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a device for treating sand adhering to the inner cavity of electro-hydraulic valve castings, in order to solve the problem of sand adhering to the inner cavity of electro-hydraulic valve castings mentioned in the background art. The inner cavity oil passages have various complex structures such as straight holes, oblique holes, annular holes, and spirals. Conventional sandblasting processes are difficult to effectively treat the stubborn sand adhering to these complex oil passages, which will affect the dimensional accuracy and surface roughness of the castings, hinder subsequent processing, and even lead to the scrapping of castings, reduce production efficiency, and increase enterprise costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for treating sand adhering to the inner cavity of an electro-hydraulic valve casting, comprising a base rod, a connecting rod fixedly installed at the lower end of the base rod, and an installation block fixedly installed at the upper end of the base rod. A straight hole cleaning head, an inclined hole cleaning head, and an annular and spiral oil passage cleaning head are movably mounted on the outside of the installation block. The straight hole cleaning head, the inclined hole cleaning head, and the annular and spiral oil passage cleaning head are movably connected to the installation components reserved inside the installation block, and the installation components have built-in anti-detachment components.

[0007] Preferably, the mounting component includes a rotating rod that is pre-installed inside the mounting block and rotatably mounted to the mounting block, and the two ends of the rotating rod are provided with threads, and the threads are threadedly connected to the extension block.

[0008] Preferably, the two threads are symmetrically arranged, with different threads in different directions, and the two threads are preset in the movable groove reserved inside the mounting block. The inner wall of the movable groove is in contact with the outer wall of the extension block to achieve a sliding connection. In this way, when the rotating rod is rotated, the two extension blocks that are threadedly connected to the rotating rod can move towards or away from each other under the restriction of the movable groove.

[0009] Preferably, the installation assembly further includes a snap-fit ​​groove pre-installed inside the straight hole cleaning head, the inclined hole cleaning head, and the annular and spiral oil passage cleaning head. The snap-fit ​​groove is composed of a large square groove and small square grooves connected to both sides of the square groove. The large square groove matches and connects with the installation block, and the small square groove matches and connects with the extension block. This allows for cleaning operations on pipes of different shapes, making the device more applicable.

[0010] Preferably, the mounting assembly further includes a dial wheel that is fixedly fitted on the outer ring of the rotating rod, and the dial wheel is provided with serrations on its outer periphery. The dial wheel is rotatably connected to a cavity reserved in the mounting block, wherein the lower end of the cavity is provided with an opening to facilitate turning the dial wheel through the opening and thereby driving the rotating rod to rotate.

[0011] Preferably, the anti-detachment component includes an annular groove pre-set inside the rotating rod, and an annular block is rotatably connected inside the annular groove. The square block fixedly installed on the side wall of the annular block is slidably connected to the strip groove that is connected to the threaded groove.

[0012] Preferably, the end of the strip groove near the dial wheel is closed, and the inner wall of the strip groove is attached to the outer wall of the block to achieve a sliding connection, thus realizing the anti-detachment connection between the extension block and the movable groove.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows: The cleaning tool of this utility model adopts a modular design, which simplifies the structure. By changing different cleaning heads, it can adapt to the cleaning needs of straight holes, inclined holes, annular and spiral oil passages, thus reducing the tool manufacturing and maintenance costs. The drive system and auxiliary system have a simple structure and are easy to operate. They can quickly control the cleaning process and subsequent purging, which improves cleaning efficiency and reduces the intensity of manual labor. The device has a simple overall structure and strong applicability. It can effectively clean sand adhering to the inner cavity of electro-hydraulic valve castings, improve casting quality, reduce scrap rate, and is conducive to enterprise promotion and application. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a perspective view of the overall structure of this utility model; Figure 2 This is an exploded view of the overall structure of this utility model; Figure 3 This is an exploded view of the internal structure of the mounting block of this utility model (partially cut out). Figure 4 This is an exploded view of the internal structure of the extension block of this utility model (partially cut out). Figure 5 This is a perspective view of the overall structure of the device for installing the inclined hole cleaning head according to this utility model; Figure 6 This is a perspective view of the overall structure of the device for installing the annular and spiral oil passage cleaning heads according to this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Base rod; 2. Connecting rod; 3. Mounting block; 4. Straight hole cleaning head; 5. Inclined hole cleaning head; 6. Annular and spiral oil passage cleaning head; 7. Mounting assembly; 701. Rotating rod; 702. Thread; 703. Extension block; 704. Movable groove; 705. Snap-fit ​​groove; 706. Dial wheel; 707. Cavity; 8. Anti-detachment assembly; 801. Annular groove; 802. Annular block; 803. Square block; 804. Strip groove. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] This utility model provides, for example Figure 1-6 The device shown is for treating sand adhering to the inner cavity of an electro-hydraulic valve casting. It includes a base rod 1, a connecting rod 2 fixedly installed at the lower end of the base rod 1, and an installation block 3 fixedly installed at the upper end of the base rod 1. A straight hole cleaning head 4, an inclined hole cleaning head 5, and an annular and spiral oil passage cleaning head 6 are movably mounted on the outside of the installation block 3. The straight hole cleaning head 4, the inclined hole cleaning head 5, and the annular and spiral oil passage cleaning head 6 are movably connected to the installation component 7 reserved inside the installation block 3. The installation component 7 has an anti-detachment component 8 built in.

[0019] After connecting the base rod 1 to cleaning heads of different shapes, the external drive motor power supply is turned on (consisting of a drive motor and a control switch. The drive motor is connected to the base rod 1 of the cleaning tool, providing it with rotational power. The control switch is used to control the start, stop, and speed adjustment of the drive motor. The speed adjustment range is adapted to the working requirements of different cleaning heads. This machine is a relatively mature machine currently available on the market, and will not be described in detail here). The operator holds the device, inserts the cleaning head into the oil passage, turns on the control switch, and adjusts the drive motor speed to the appropriate gear, so that the cleaning head rotates to clean the adhering sand. Among them, the straight hole cleaning head 4 is a columnar brush head, fixed to the front end of the base rod 1, and is used for cleaning straight hole oil passages. The inclined hole cleaning head 5 is a bendable flat brush head that can adapt to inclined hole oil passages. The annular and spiral oil passage cleaning head 6 is an annular flexible brush that can rotate and move axially with the base rod 1 and is used for cleaning annular and spiral oil passages.

[0020] To facilitate the movement of the extension block 703, the mounting component 7 includes a rotating rod 701 that is pre-installed inside the mounting block 3 and rotatably mounted to the mounting block 3. The two ends of the rotating rod 701 are provided with threads 702, and the threads 702 are threadedly connected to the extension block 703. The two threads 702 are symmetrically arranged, and the two threads 702 have different directions. The two threads 702 are pre-installed in the movable groove 704 reserved inside the mounting block 3. The inner wall of the movable groove 704 is attached to the outer wall of the extension block 703 to achieve a sliding connection.

[0021] To facilitate the rotation of the rotating rod 701, the mounting assembly 7 also includes a dial 706 fixedly fitted on the outer ring of the rotating rod 701. The dial 706 has serrations on its outer periphery and is rotatably connected to the cavity 707 reserved in the mounting block 3. The lower end of the cavity 707 is open, which allows the dial 706 to be turned through the opening to drive the rotating rod 701 to rotate.

[0022] The mounting assembly 7 also includes a snap-fit ​​groove 705 pre-installed inside the straight hole cleaning head 4, the inclined hole cleaning head 5, and the annular and spiral oil passage cleaning head 6. The snap-fit ​​groove 705 is composed of a large square groove and small square grooves connected to both sides of the square groove. The large square groove matches and connects with the mounting block 3, and the small square groove matches and connects with the extension block 703. This allows for cleaning operations on pipes of different shapes, making the device more applicable.

[0023] By turning the dial 706, the two extension blocks 703, which are threadedly connected to the rotating rod 701, move towards or away from each other under the restriction of the movable groove 704, so as to match or separate the extension blocks 703 from the small square groove, and complete the replacement and installation of the cleaning head. At the same time, the device adopts a combined design, with the straight hole cleaning head 4, the inclined hole cleaning head 5, and the annular and spiral oil passage cleaning head 6 respectively connected to the base rod 1, so as to achieve cleaning operations for pipes of different shapes.

[0024] The anti-detachment component 8 includes an annular groove 801 pre-set inside the rotating rod 701, and an annular block 802 is rotatably connected inside the annular groove 801. A square block 803 fixedly installed on the outer wall of the annular block 802 is slidably connected to a strip groove 804 that is connected to the threaded groove. The end of the strip groove 804 near the dial wheel 706 is closed, and the inner wall of the strip groove 804 is attached to the outer wall of the square block 803 to achieve a sliding connection. This achieves the anti-detachment connection between the extension block 703 and the movable groove 704.

[0025] When the rotating rod 701 rotates, the extension block 703, which is threadedly connected to the rotating rod 701, moves in position. The annular block 802, which is rotatably connected to the rotating rod 701, and the square block 803, which is fixedly connected to the outer wall of the annular block 802, slide in connection with the strip groove 804. This ensures that the rotating rod 701 rotates smoothly without obstruction. When the extension block 703 moves away from the movable groove 704, the extension block 703 cannot continue to move when the closed end of the strip groove 804 abuts against the square block 803. This ensures that the extension block 703 and the movable groove 704 are not detached, and ensures that the connection operation between the mounting block 3 and different cleaning heads is carried out smoothly.

[0026] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for treating sand adhering to the inner cavity of an electro-hydraulic valve casting, comprising a base rod (1), characterized in that, A connecting rod (2) is fixedly installed at the lower end of the base rod (1), and an installation block (3) is fixedly installed at the upper end of the base rod (1). A straight hole cleaning head (4), an inclined hole cleaning head (5), and an annular and spiral oil passage cleaning head (6) are respectively movably fitted on the outside of the installation block (3). The straight hole cleaning head (4), the inclined hole cleaning head (5), and the annular and spiral oil passage cleaning head (6) are movably connected to the installation component (7) reserved inside the installation block (3), and the installation component (7) has an anti-detachment component (8) built in.

2. The device for treating sand adhering to the inner cavity of an electro-hydraulic valve casting according to claim 1, characterized in that, The mounting assembly (7) includes a rotating rod (701) that is pre-installed inside the mounting block (3) and is rotatably mounted to the mounting block (3). The two ends of the rotating rod (701) are provided with threads (702), and the threads (702) are threadedly connected to the extension block (703).

3. The device for treating sand adhering to the inner cavity of an electro-hydraulic valve casting according to claim 2, characterized in that, The two threads (702) are symmetrically arranged, with different threads (702) and the two threads (702) are preset in the movable groove (704) reserved inside the mounting block (3). The inner wall of the movable groove (704) is attached to the outer wall of the extension block (703) to achieve a sliding connection.

4. The device for treating sand adhering to the inner cavity of an electro-hydraulic valve casting according to claim 3, characterized in that, The mounting assembly (7) also includes a snap-fit ​​groove (705) pre-set inside the straight hole cleaning head (4), the oblique hole cleaning head (5), and the annular and spiral oil passage cleaning head (6). The snap-fit ​​groove (705) is composed of a large square groove and a small square groove connected to both sides of the square groove. The large square groove is matched and connected to the mounting block (3), and the small square groove is matched and connected to the extension block (703).

5. The device for treating sand adhering to the inner cavity of an electro-hydraulic valve casting according to claim 4, characterized in that, The mounting assembly (7) also includes a dial (706) fixedly mounted on the outer ring of the rotating rod (701), and the dial (706) is provided with serrations on its outer periphery. The dial (706) is rotatably connected to the cavity (707) reserved in the mounting block (3), wherein the lower end of the cavity (707) is provided with an opening.

6. The device for treating sand adhering to the inner cavity of an electro-hydraulic valve casting according to claim 5, characterized in that, The anti-detachment component (8) includes an annular groove (801) pre-set inside the rotating rod (701), and an annular block (802) is rotatably connected inside the annular groove (801). The square block (803) fixedly installed on the side wall of the annular block (802) is slidably connected to the strip groove (804) connected inside the threaded groove.

7. The device for treating sand adhering to the inner cavity of an electro-hydraulic valve casting according to claim 6, characterized in that, The end of the strip groove (804) near the dial wheel (706) is closed, and the inner wall of the strip groove (804) is attached to the outer wall of the block (803) to achieve a sliding connection.

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