Quantitative sand blasting valve core quick change device

Abstract

This utility model discloses a quick-change device for a quantitative sandblasting valve core, comprising an upper valve body and a lower valve body. A valve core seat is installed between the upper and lower valve bodies, and a valve core is placed inside the valve core seat. A valve core pressure block is installed on one side of the connection between the upper and lower valve bodies via a pressure plate. This utility model uses the upper and lower valve bodies to form a valve body cavity. The valve core is made of a special wear-resistant material and is clamped by the valve core seat to ensure that the valve core is not easily crushed. A first valve core sealing ring and a second valve core sealing ring are respectively set on the upper and lower parts of the valve core seat. The first and second valve core sealing rings ensure synchronous sealing between the valve core and the valve core seat. The valve core is inserted into the opening position and locked by the pressure plate after being pressed and positioned by the valve core pressure block. When replacing the valve core, the pressure plate is opened and the core is pushed out through the top rod hole with a thin rod. Therefore, this quick-change valve core structure is simple, stable, and reliable, facilitating the replacement of different valve core specifications according to sandblasting process requirements and offering strong adaptability to various environments.

Description

Technical Field

[0001] This utility model relates to the field of sandblasting valve core replacement technology, and in particular to a quick-change device for a quantitative sandblasting valve core. Background Technology

[0002] The sandblasting valve is a key component of sandblasting equipment. It controls the speed and direction of abrasive ejection to achieve cleaning, polishing, and coating of workpiece surfaces. Inside the sandblasting valve is a sand gate, which can be switched to control the abrasive ejection. When the sand gate is open, compressed air impacts the abrasive, ejecting it. When the sand gate is closed, the compressed air stops impacting the abrasive, and the abrasive ejection stops. Sandblasting valves are widely used in industries such as aerospace, automotive, machinery, and casting to clean, polish, and coat the surfaces of workpieces made of various materials.

[0003] However, current sandblasting valve cores are usually manufactured using precision machining processes and have complex internal structures. Therefore, when different specifications need to be changed according to the requirements of the sandblasting process, the valve body needs to be disassembled and the packing cleaned. Due to limited operating space, tools are required, and the complex structure makes disassembly difficult. To address this issue, we propose a quick-change device for quantitative sandblasting valve cores. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a quick-change device for a quantitative sandblasting valve core.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A quick-change device for a quantitative sandblasting valve core includes an upper valve body and a lower valve body. A valve core seat is installed between the upper and lower valve bodies, and a valve core is placed inside the valve core seat. A valve core pressure block is installed on one side of the connection between the upper and lower valve bodies via a pressure plate, and a push rod hole is opened on the other side of the connection between the upper and lower valve bodies.

[0006] Preferably, the upper valve body and the lower valve body are fixed together by bolts, and a cavity is formed at the snap-fit ​​joint between the upper valve body and the lower valve body.

[0007] Preferably, the valve core seat has a groove inside that matches the valve core, and a circular hole is formed on the inner wall below the groove.

[0008] Preferably, a first valve core sealing ring and a second valve core sealing ring are respectively installed at the upper and lower ends of the valve core seat.

[0009] Preferably, an annular groove adapted to the first valve core sealing ring is formed between the upper end of the valve core seat and the valve core, and an annular groove adapted to the second valve core sealing ring is formed on the lower end surface of the valve core seat.

[0010] Preferably, the depth of the annular grooves opened at both the upper and lower ends of the valve core seat is equal to half the surface thickness of the first valve core sealing ring and the second valve core sealing ring.

[0011] Preferably, the valve core pressure block has an arc surface at the end away from the pressure plate that matches the surface of the valve core seat.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This device consists of an upper valve body and a lower valve body forming a valve cavity. The valve core is made of a special wear-resistant material and is clamped by a valve core seat to ensure that the valve core is not easily crushed. The valve core seat is equipped with a first valve core sealing ring and a second valve core sealing ring on the upper and lower parts, respectively. The first and second valve core sealing rings ensure that the valve core and the valve core seat are sealed synchronously. The valve core is inserted into the opening position as a whole, and after being pressed and positioned by the valve core pressure block, the pressure plate locks it. When replacing the valve core, the pressure plate is opened and the valve core can be pushed out from the top rod hole with a thin rod. Therefore, this quick-change valve core structure is simple, stable and reliable, and it is convenient to replace different valve core specifications according to the sandblasting process requirements. It is also highly adaptable to various environments. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of a quick-change device for a quantitative sandblasting valve core proposed in this utility model; Figure 2 This is a three-dimensional cross-sectional view of a quick-change device for a quantitative sandblasting valve core proposed in this utility model; Figure 3 This is a three-dimensional exploded view of a quick-change device for a quantitative sandblasting valve core proposed in this utility model.

[0014] In the diagram: 1. Upper valve body; 2. First valve core sealing ring; 3. Valve core seat; 4. Valve core; 5. Second valve core sealing ring; 6. Lower valve body; 7. Valve core pressure block; 8. Pressure plate; 9. Top rod hole. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figure 1-3 A quick-change device for a quantitative sandblasting valve core includes an upper valve body 1 and a lower valve body 6. A valve core seat 3 is installed between the upper valve body 1 and the lower valve body 6. The upper valve body 1 and the lower valve body 6 are bolted together for easy installation. A valve core 4 is placed inside the valve core seat 3. A valve core pressure block 7 is installed on one side of the connection between the upper valve body 1 and the lower valve body 6 through a pressure plate 8. A push rod hole 9 is opened on the other side of the connection between the upper valve body 1 and the lower valve body 6.

[0017] Furthermore, refer to Figure 2 and Figure 3 It can be seen that the upper valve body 1 and the lower valve body 6 are fixed by bolts. The upper valve body 1 and the lower valve body 6 form a cavity at the snap-fit ​​joint. Through the cavity formed inside the upper valve body 1 and the lower valve body 6, the valve core seat 3 can be installed as a whole.

[0018] Furthermore, refer to Figure 2 and Figure 3 It can be seen that the valve core seat 3 has a groove inside that matches the valve core 4, and a round hole is opened on the inner wall below the groove. The groove inside the valve core seat 3 can conveniently limit and accommodate the valve core 4, while the round hole on the inner wall below the groove can facilitate the flow of materials.

[0019] Furthermore, refer to Figure 3 It can be seen that the upper and lower ends of the valve core seat 3 are respectively equipped with a first valve core sealing ring 2 and a second valve core sealing ring 5. The first valve core sealing ring 2 and the second valve core sealing ring 5 installed at the upper and lower ends of the valve core seat 3 can easily increase the sealing between the valve core seat 3 and the upper valve body 1 and the lower valve body 6.

[0020] Furthermore, refer to Figure 2 and Figure 3 It can be seen that an annular groove adapted to the first valve core sealing ring 2 is opened between the upper end of the valve core seat 3 and the valve core 4, and an annular groove adapted to the second valve core sealing ring 5 is opened on the lower end surface of the valve core seat 3. The annular grooves opened at both the upper and lower ends of the valve core seat 3 can conveniently limit the placement of the first valve core sealing ring 2 and the second valve core sealing ring 5.

[0021] Furthermore, refer to Figure 2 and Figure 3 It can be seen that the depth of the annular grooves opened at both the upper and lower ends of the valve core seat 3 is equal to half the surface thickness of the first valve core sealing ring 2 and the second valve core sealing ring 5. By making the depth of the annular groove the same as half the thickness of the first valve core sealing ring 2 and the second valve core sealing ring 5, it is convenient to make the first valve core sealing ring 2 and the second valve core sealing ring 5 seal between the upper valve body 1 and the lower valve body 6.

[0022] Furthermore, refer to Figure 2 and Figure 3 It can be seen that the valve core pressure block 7 has an arc surface that matches the surface of the valve core seat 3 at the end away from the pressure plate 8. By setting one end of the valve core pressure block 7 to an arc surface, the valve core pressure block 7 can fit into the surface of the valve core seat 3.

[0023] Working principle: When using this utility model, if the valve core seat 3 and valve core 4 need to be replaced, according to the attached... Figure 1 Appendix Figure 2 and attached Figure 3By disassembling the pressure plate 8 from the side of the upper valve body 1 and the lower valve body 6, a thin rod is passed through the top rod hole 9 to push the valve core seat 3 as a whole. At this time, the valve core seat 3 and the valve core pressure block 7 can be pushed out from the first valve core sealing ring 2 and the lower valve body 6. At the same time, the new valve core 4 is placed in the valve core seat 3, and the first valve core sealing ring 2 and the second valve core sealing ring 5 are placed at the upper and lower ends of the valve core seat 3. Thus, the valve core seat 3 as a whole can be pushed in from one side of the upper valve body 1 and the lower valve body 6. The valve core pressure block 7 can push the valve core seat 3 as a whole to the middle position of the upper valve body 1 and the lower valve body 6. The pressure plate 8 is then connected to the upper valve body 1 and the lower valve body 6, and the valve core seat 3 and the valve core 4 can be replaced. The above is the complete working principle of this utility model.

[0024] In this utility model, the installation, connection or setting methods of all the components mentioned above are common mechanical methods, and the specific structure, model and coefficient index of all the components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be described in detail.

[0025] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

[0026] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside, and vertical and horizontal" in the terminology only represent the orientation of the term in its conventional use or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, numerals such as "first," "second," and "third" do not represent specific quantities or orders, but are only used to distinguish names. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A quick-change device for a quantitative sandblasting valve core, comprising an upper valve body (1) and a lower valve body (6), characterized in that, A valve core seat (3) is installed between the upper valve body (1) and the lower valve body (6), and a valve core (4) is placed inside the valve core seat (3). A valve core pressure block (7) is installed on one side of the connection between the upper valve body (1) and the lower valve body (6) through a pressure plate (8). A top rod hole (9) is opened on the other side of the connection between the upper valve body (1) and the lower valve body (6).

2. The quick-change device for the valve core of a quantitative sandblasting valve according to claim 1, characterized in that, The upper valve body (1) and the lower valve body (6) are fixed together by bolts, and a cavity is formed at the snap-fit ​​joint between the upper valve body (1) and the lower valve body (6).

3. The quick-change device for a quantitative sandblasting valve core according to claim 1, characterized in that, The valve core seat (3) has a groove inside that matches the valve core (4), and a round hole is provided on the inner wall below the groove.

4. The quick-change device for a metering sandblasting valve core according to claim 1, characterized in that, The valve core seat (3) is equipped with a first valve core sealing ring (2) and a second valve core sealing ring (5) at its upper and lower ends, respectively.

5. The quick-change device for the valve core of a quantitative sandblasting valve according to claim 1, characterized in that, An annular groove adapted to the first valve core sealing ring (2) is provided between the upper end of the valve core seat (3) and the valve core (4), and an annular groove adapted to the second valve core sealing ring (5) is provided on the lower end surface of the valve core seat (3).

6. The quick-change device for the valve core of a quantitative sandblasting valve according to claim 1, characterized in that, The depth of the annular grooves opened at both the upper and lower ends of the valve core seat (3) is equal to half the surface thickness of the first valve core sealing ring (2) and the second valve core sealing ring (5).

7. The quick-change device for the valve core of a quantitative sandblasting valve according to claim 1, characterized in that, The valve core pressure block (7) has an arc surface that matches the surface of the valve core seat (3) at the end away from the pressure plate (8).

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