Blasting needle valve with replaceable blasting needle

Abstract

The utility model relates to the technical field of blasting needle valves, in particular to a blasting needle valve with a replaceable blasting needle, which comprises a main valve body, a plurality of support members are fixedly mounted on the upper end face of the main valve body, a valve rod is slidably mounted in the main valve body, and a pressure plate is fixedly mounted at the upper end of each support member. A blasting needle is inserted in the center of the pressing disc, the lower end of the blasting needle is inserted in the head of the valve rod, a limiting plate for limiting the head of the blasting needle is installed on the upper end face of the pressing disc, and the limiting plate is horizontally and slidably connected with the pressing disc. Through the design of the limiting plate and the elastic stretching assembly, the blasting needle is easy and convenient to replace, complex tools and steps are not needed, the replacement time is greatly shortened, the production stagnation time is shortened, and the production efficiency is improved. And through the design of the positioning block of the blasting needle and the placing groove and the center hole on the pressure plate, the accuracy and the stability of the installation of the blasting needle are ensured.

Description

Technical Field

[0001] This utility model relates to the field of rupture needle valve technology, and in particular to a rupture needle valve with a replaceable rupture needle. Background Technology

[0002] In industrial production processes, rupture needle valves, as important pressure safety protection devices, are widely used in many fields such as chemical, petroleum, and power industries. They can rapidly rupture and release pressure when the system pressure exceeds a predetermined value, preventing serious accidents such as explosions due to overpressure, and playing a crucial role in ensuring the safe and stable operation of industrial production.

[0003] Traditional rupture needle valves typically consist of a main valve body, valve stem, rupture needle, and pressure plate. The rupture needle, as a core component, directly affects the valve's pressure control accuracy and safety performance. However, in practical use, replacing the rupture needle in traditional rupture needle valves is quite cumbersome. In traditional designs, the connection between the rupture needle and components such as the valve stem and pressure plate is complex, often requiring multiple specialized tools and several steps to complete the replacement.

[0004] Secondly, the accuracy and stability of the rupture needle installation are difficult to guarantee. Due to the lack of a precise positioning structure, installation deviations are prone to occur during the installation of the rupture needle, causing it to shake or shift during operation. This, in turn, affects the valve's working accuracy and reliability, reducing the safety performance of the rupture needle valve. Utility Model Content

[0005] This invention solves the problems in related technologies and proposes a rupture needle valve with a replaceable rupture needle.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] A replaceable rupture needle valve includes a main valve body. Several support members are fixedly installed on the upper end face of the main valve body, and a valve stem is slidably installed in the main valve body. A pressure plate is fixedly installed on the upper end of the support members. A rupture needle is inserted into the center of the pressure plate. The lower end of the rupture needle is inserted into the head of the valve stem. A limiting plate for limiting the head of the rupture needle is installed on the upper end face of the pressure plate. The limiting plate is horizontally slidably connected to the pressure plate, and an elastic tension component connected to the pressure plate is also installed on the limiting plate.

[0008] As a preferred embodiment, the rupture needle includes a needle body and a positioning block, wherein the positioning block is installed at the head of the needle body and is fixedly connected to the needle body.

[0009] As a preferred embodiment, the upper end face of the pressure plate is provided with a guide groove for the sliding installation of the limiting plate, and the center of the pressure plate is also provided with a placement groove for the positioning block to be placed, and a central hole for the needle body to pass through is provided below the placement groove.

[0010] As a preferred embodiment, the limiting plate includes a base plate and a vertical plate. The base plate is slidably installed in the guide groove, and the vertical plate is vertically installed at one end of the base plate, and the vertical plate and the base plate are integrally formed.

[0011] As a preferred embodiment, the upper end face of the base plate is provided with a circular groove corresponding to the placement groove, and the upper end face of the base plate is provided with a mounting shell for installing the elastic tension component, the mounting shell being integrally formed with the base plate.

[0012] As a preferred embodiment, a flipping frame is installed on both sides of the upright plate, one end of the flipping frame is rotatably connected to the upright plate, and a load-bearing bar is fixedly installed on the other end of the flipping frame.

[0013] As a preferred embodiment, the elastic tension assembly includes a tension spring and a fixing seat. One end of the tension spring is fixed in the mounting housing, and the fixing seat is fixedly installed on the other end of the tension spring. The fixing seat is fixed to the pressure plate by bolts.

[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: The design of the limiting plate and elastic tension component makes the replacement of the rupture needle simple and convenient, requiring no complex tools or steps, significantly shortening replacement time, reducing production downtime, and improving production efficiency. The design of the rupture needle positioning block and the placement groove and center hole on the pressure plate ensures the accuracy and stability of the rupture needle installation, improving the working precision and reliability of the valve. The tilting frame and load-bearing bar utilize gravity to ensure safety when not in use. The rupture needle can be replaced individually during use, avoiding the need to replace the entire valve due to rupture needle damage, thus reducing maintenance costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this utility model;

[0016] Figure 2 yes Figure 1 A front view of the device shown;

[0017] Figure 3 This is a perspective view of the main valve body and pressure plate in a specific embodiment of this utility model.

[0018] Figure 4 yes Figure 3 Top view of the device shown;

[0019] Figure 5 This is a perspective view of the rupture needle in an embodiment of this utility model;

[0020] Figure 6 This is a perspective view of the limiting plate in an embodiment of this utility model;

[0021] Figure 7 yes Figure 6 Front view of the device shown.

[0022] In the diagram: 1. Main valve body; 11. Supporting component; 12. Valve stem; 2. Pressure plate; 21. Guide groove; 22. Placement groove; 221. Center hole; 3. Bursting needle; 31. Needle body; 32. Positioning block; 4. Limiting plate; 41. Base plate; 411. Circular groove; 412. Mounting shell; 42. Vertical plate; 421. Tilting frame; 422. Load-bearing bar; 5. Elastic tension assembly; 51. Tension spring; 52. Fixing seat. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0026] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0027] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0028] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0029] Reference Figure 1 , Figure 2 and Figure 3As shown, a rupture needle valve with a replaceable rupture needle 3 includes a main valve body 1. Several support members 11 are fixedly installed on the upper surface of the main valve body 1, and a valve stem 12 is slidably installed in the main valve body 1. A pressure plate 2 is fixedly installed on the upper end of the support members 11. A rupture needle 3 is inserted into the center of the pressure plate 2, and the lower end of the rupture needle 3 is inserted into the head of the valve stem 12. A limiting plate 4 is installed on the upper surface of the pressure plate 2 to limit the head of the rupture needle 3. The limiting plate 4 is horizontally slidably connected to the pressure plate 2, and an elastic tension component 5 connected to the pressure plate 2 is also installed on the limiting plate 4. The support members 11 on the main valve body 1 are used to install the pressure plate 2, providing a stable support structure for the installation of the rupture needle 3. The valve stem 12 slides in the main valve body 1, enabling the valve to open and close. The rupture needle 3, inserted into the head of the valve stem 12, can precisely control the pressure and flow rate of the fluid. The limiting plate 4 is horizontally slidably connected to the pressure plate 2 and connected via the elastic tension component 5, facilitating the limiting and disassembly of the rupture needle 3. When the rupture needle 3 needs to be replaced, simply overcome the tension of the elastic tension component 5 and slide the limiting plate 4 to remove the rupture needle 3. The operation is simple and convenient, greatly improving the efficiency of replacing the rupture needle 3 and reducing maintenance costs. The main valve body 1 can be made of high-quality stainless steel, such as 304 stainless steel, the support component 11 can be made of carbon steel, and the valve stem 12 is made of high-strength alloy steel, such as 40Cr alloy steel, to ensure its wear resistance and strength during sliding. The pressure plate 2 is made of stainless steel, such as 316 stainless steel, which has better corrosion resistance. The pressure plate 2 is fixed to the upper end of the support component 11 with bolts to ensure a firm connection.

[0030] Reference Figure 5 As shown, the rupture needle 3 includes a needle body 31 and a positioning block 32. The positioning block 32 is installed on the head of the needle body 31 and is fixedly connected to the needle body 31. The rupture needle 3 is composed of a needle body 31 and a positioning block 32. The positioning block 32 is fixed to the head of the needle body 31. The positioning block 32 ensures that the rupture needle 3 can be accurately placed in the corresponding position on the pressure plate 2 during installation, guaranteeing the accuracy and stability of the installation of the rupture needle 3 and preventing the rupture needle 3 from shifting or shaking during use, thereby improving the working accuracy and reliability of the valve. The needle body 31 of the rupture needle 3 can be made of hard alloy material, such as YG8 hard alloy, which has high hardness and wear resistance.

[0031] Reference Figure 3 and Figure 4As shown, the upper surface of the pressure plate 2 has a guide groove 21 for the sliding installation of the limiting plate 4. The center of the pressure plate 2 also has a placement groove 22 for the positioning block 32. Below the placement groove 22 is a central hole 221 for the needle body 31 to pass through. The guide groove 21 on the pressure plate 2 provides precise guidance for the sliding of the limiting plate 4, ensuring the smoothness and stability of the sliding. The placement groove 22 is used to place the positioning block 32, and the central hole 221 allows the needle body 31 to pass through. This structural design allows the rupture needle 3 to be accurately installed on the pressure plate 2 and to fit tightly with the head of the valve stem 12, ensuring the normal operation of the valve. At the same time, the placement groove 22 and the central hole 221 also facilitate the disassembly and replacement of the rupture needle 3.

[0032] Reference Figure 6 and Figure 7 As shown, the limiting plate 4 includes a base plate 41 and a vertical plate 42. The base plate 41 is slidably installed in the guide groove 21, and the vertical plate 42 is vertically installed at one end of the base plate 41, and the vertical plate 42 is integrally formed with the base plate 41. The limiting plate 4 adopts a structure in which the base plate 41 and the vertical plate 42 are integrally formed, which is simple in structure and has high strength. The base plate 41 is slidably installed in the guide groove 21, which ensures that the limiting plate 4 can slide smoothly along the guide groove 21. The vertical plate 42 provides an installation base for subsequent installation of components such as the flipping frame 421, so that the limiting plate 4 can better realize the limiting function of the bursting needle 3. The upper end surface of the base plate 41 is provided with a circular groove 411 corresponding to the placement groove 22, and the upper end surface of the base plate 41 is provided with an installation shell 412 for the installation of the elastic tension component 5, and the installation shell 412 is integrally formed with the base plate 41. The circular groove 411 on the base plate 41 corresponds to the placement groove 22. When the limiting plate 4 slides to the appropriate position, the circular groove 411 can align with the placement groove 22, facilitating the placement of the positioning block 32. When the circular groove 411 and the placement groove 22 are misaligned, the positioning block 32 can be locked, enhancing the fixing effect on the bursting needle 3. The mounting shell 412 facilitates the installation of the elastic tension component 5, enabling the elastic tension component 5 to work stably and providing appropriate tension for the sliding of the limiting plate 4. A flipping frame 421 is installed on both sides of the upright plate 42. One end of the flipping frame 421 is rotatably connected to the upright plate 42, and the other end of the flipping frame 421 is fixedly installed with a load bar 422. The tilting frame 421 and load-bearing bar 422 installed on both sides of the upright plate 42 can be tilted up when the limit plate 4 needs to be slidable, and tilted down when the limit plate 4 does not need to be slidable, so that the load-bearing bar 422 is supported in the guide groove 21, ensuring that the limit plate 4 cannot be slid open normally, further increasing the safety of the equipment. The base plate 41 and the upright plate 42 of the limit plate 4 are made of aluminum alloy, such as 6061 aluminum alloy, which is lightweight and high-strength. The tilting frame 421 can be made of carbon steel and is rotatably connected to the upright plate 42 by a pin. The load-bearing bar 422 can be made of lead or iron blocks and is fixed to the other end of the tilting frame 421 by welding or bolting.

[0033] Reference Figure 6 and Figure 7 As shown, the elastic tension assembly 5 includes a tension spring 51 and a fixing seat 52. One end of the tension spring 51 is fixed in the mounting housing 412, and the fixing seat 52 is fixedly installed on the other end of the tension spring 51. The fixing seat 52 is fixed to the pressure plate 2 by bolts. The elastic tension assembly 5 adopts the structure of tension spring 51 and fixing seat 52. The tension spring 51 provides tension, and the fixing seat 52 is fixed to the pressure plate 2 by bolts. This structure is simple and reliable, and can provide stable tension for the limiting plate 4, ensuring that the limiting plate 4 can firmly limit the bursting needle 3 under normal conditions. At the same time, when it is necessary to replace the bursting needle 3, it can easily overcome the tension and slide the limiting plate 4. The tension spring 51 of the elastic tension assembly 5 can be made of high-quality spring steel, such as 65Mn spring steel, which has good elasticity and fatigue life. The fixing seat 52 is made of stainless steel.

[0034] In this embodiment, when the rupture pin needs to be replaced, first flip the flipping frame 421, then slide the limiting plate 4 to overcome the tension of the tension spring 51, so that the circular groove 411 on the limiting plate 4 can be aligned with the placement groove 22, and then take out the old rupture pin. Install the new rupture pin according to the above installation steps, then slide the limiting plate 4 back to its original position, and use the tension of the tension spring 51 to fix the limiting plate 4, thus completing the replacement of the rupture pin.

[0035] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A replaceable detonator valve comprising a main valve body (1), characterized in that: The upper end face of the main valve body (1) is fixedly installed with several support members (11), and a valve stem (12) is slidably installed in the main valve body (1). A pressure plate (2) is fixedly installed at the upper end of the support member (11). A bursting needle (3) is inserted into the center of the pressure plate (2). The lower end of the bursting needle (3) is inserted into the head of the valve stem (12). A limiting plate (4) for limiting the head of the bursting needle (3) is installed on the upper end face of the pressure plate (2). The limiting plate (4) is horizontally slidably connected to the pressure plate (2), and an elastic tension component (5) connected to the pressure plate (2) is also installed on the limiting plate (4).

2. A replaceable detonator valve according to claim 1, characterized in that: The rupture needle (3) includes a needle body (31) and a positioning block (32). The positioning block (32) is installed on the head of the needle body (31) and is fixedly connected to the needle body (31).

3. A changeable detonator valve according to claim 2, characterized in that: The upper end face of the pressure plate (2) is provided with a guide groove (21) for the sliding installation of the limiting plate (4). The center of the pressure plate (2) is also provided with a placement groove (22) for the positioning block (32) to be placed. Below the placement groove (22) is a central hole (221) for the needle body (31) to pass through.

4. A changeable detonator valve according to claim 3, characterized in that: The limiting plate (4) includes a base plate (41) and a vertical plate (42). The base plate (41) is slidably installed in the guide groove (21), and the vertical plate (42) is vertically installed at one end of the base plate (41). The vertical plate (42) and the base plate (41) are integrally formed.

5. A changeable detonator valve according to claim 4, c h a r a c t e r i s e d in that: The upper end face of the base plate (41) is provided with a circular groove (411) corresponding to the placement groove (22), and the upper end face of the base plate (41) is provided with a mounting shell (412) for the installation of the elastic tension component (5), and the mounting shell (412) is integrally formed with the base plate (41).

6. A changeable detonator valve according to claim 5, characterized in that: A flipping frame (421) is installed on both sides of the upright plate (42). One end of the flipping frame (421) is rotatably connected to the upright plate (42), and a load bar (422) is fixedly installed on the other end of the flipping frame (421).

7. A rupture needle valve with a replaceable rupture needle according to claim 6, characterized in that: The elastic tension assembly (5) includes a tension spring (51) and a fixing seat (52). One end of the tension spring (51) is fixed in the mounting shell (412), and the fixing seat (52) is fixedly installed on the other end of the tension spring (51). The fixing seat (52) is fixed to the pressure plate (2) by bolts.

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