Differential pressure type blasting needle valve

Abstract

The utility model discloses a differential pressure type blasting needle valve, which relates to the field of differential pressure type blasting needle valves and comprises a valve body and a valve rod, the valve rod is mounted in the valve body in a sliding manner, a support frame is fixedly mounted at the upper end of the valve body, a horizontal pressing plate is fixedly mounted at the head of the support frame, a stepped groove is formed in the center of the horizontal pressing plate, and the horizontal pressing plate is fixedly mounted in the stepped groove. A needle frame is installed in the stepped groove, a top plate for limiting the needle frame is further installed on the upper end face of the horizontal pressing plate, and one end of the top plate is rotationally connected with the horizontal pressing plate. The stepped groove is formed in the horizontal pressing plate, so that the needle head frame can be conveniently and flexibly placed, the situation that the needle head frame is rusted and cannot be disassembled and assembled is avoided, meanwhile, the rotatable top plate is arranged on the horizontal pressing plate, and when the top plate and the T-shaped metal frame are attracted together, the needle head frame can be limited through the top plate; the explosion needle holder has the advantages that the explosion needle holder is stable in use and easy to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of differential pressure bursting needle valves, in particular to a differential pressure bursting needle valve. Background Art

[0002] The bursting needle valve, also called the buckling needle valve, is a non-reclosing safety pressure relief device, a type of pressure relief valve, and has the same function as the bursting disc and safety valve. The safety pressure relief device is a device to prevent overpressure in boilers and pressure vessels.

[0003] The existing Chinese patent with the announcement number CN212273166U discloses a bursting needle valve. The bursting needle valve includes a valve body, a valve cover, a supporting member, a pressure plate, a valve plate, a bursting needle and a valve stem, the valve body includes an inlet end and an outlet end, the valve cover is provided with a through hole, the pressure plate and the supporting member are both arranged outside the valve body, the valve plate is arranged inside the valve body, the valve plate is hinged to the valve body, the valve plate is rotatable between a first position and a second position, the valve plate in the first position seals the inlet end so that the inlet end and the outlet end are not connected, and the valve plate in the second position is separated from the inlet end so that the inlet end and the outlet end are connected.

[0004] With regard to the above-mentioned related technologies, it is found that when the existing bursting needle is installed, the lower end is generally inserted into the valve stem, and the other end is fixed by a connecting piece, and the connecting piece is mostly fixed on the pressure plate by threads. When the bursting needle valve is installed and used for a long time in a humid environment, it is easy to rust, which in turn affects the replacement of the bursting needle. Utility Model Content

[0005] The present application provides a pressure differential bursting needle valve, which is used to solve the problems raised in the background technology.

[0006] The utility model is achieved in this way:

[0007] A pressure differential bursting needle valve comprises a valve body and a valve stem, wherein the valve stem is slidably mounted in the valve body, a support frame is fixedly mounted on the upper end of the valve body, a horizontal pressure plate is fixedly mounted on the head of the support frame, a stepped groove is provided at the center of the horizontal pressure plate, a needle holder is mounted in the stepped groove, and a top plate of a limited needle holder is also mounted on the upper end surface of the horizontal pressure plate, one end of the top plate is rotatably connected to the horizontal pressure plate, and the other end of the top plate is magnetically fixed to the horizontal pressure plate, and a bursting needle is mounted between the needle holder and the valve stem.

[0008] Furthermore, the horizontal pressing plate includes a main plate and a T-shaped metal frame, wherein the T-shaped metal frame is arranged on the upper end surface of the main plate, and the T-shaped metal frame and the main plate are integrally formed.

[0009] Furthermore, the needle holder includes a ring cover and a sleeve, the sleeve is arranged on the lower end surface of the ring cover, and the sleeve and the ring cover are integrally formed.

[0010] Furthermore, a pick-up and placement handle is installed on the upper end surface of the ring cover, and the pick-up and placement handle is fixedly connected to the ring cover.

[0011] Furthermore, the top plate includes a strip plate and a magnetic block, the magnetic block is installed at one end of the strip plate, and the magnetic block is fixedly connected to the strip plate.

[0012] Furthermore, a rotating rod for rotatably mounting the strip plate is disposed on the upper end surface of the main plate, and the rotating rod is fixedly connected to the main plate.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a stepped groove on the horizontal pressure plate, so that the needle holder can be flexibly placed without rusting and being unable to be disassembled; at the same time, a rotatable top plate is provided on the horizontal pressure plate, so that when the top plate and the T-shaped metal frame are sucked together, the needle holder can be limited by the top plate, thereby ensuring that the needle holder can stably limit and lock the blasting needle, which has the advantages of stable use and easy disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

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

[0016] Figure 2 It is a three-dimensional diagram of the needle holder, top plate and blasting needle in the embodiment of the utility model;

[0017] Figure 3 yes Figure 2 a top view of the device shown;

[0018] Figure 4 yes Figure 2 A perspective view of the horizontal platen shown;

[0019] Figure 5 yes Figure 2 A stereoscopic view of the needle holder shown.

[0020] In the figure: 1. valve body; 2. valve stem; 3. horizontal pressure plate; 30. stepped groove; 31. main plate; 311. rotating rod; 32. T-shaped metal frame; 4. needle holder; 41. ring cover; 411. pick-up and placement handle; 42. sleeve; 5. top plate; 51. strip plate; 52. magnetic block; 6. blasting needle. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents the selected embodiments of the utility model.

[0022] Reference Figure 1 , Figure 2 and Figure 3 As shown, a differential pressure bursting needle valve comprises a valve body 1 and a valve stem 2, the valve stem 2 is slidably installed in the valve body 1, a support frame 11 is fixedly installed on the upper end of the valve body 1, a horizontal pressure plate 3 is fixedly installed on the head of the support frame 11, a step groove 30 is opened at the center of the horizontal pressure plate 3, a needle frame 4 is installed in the step groove 30, and a top plate 5 with a limited needle frame 4 is also installed on the upper end surface of the horizontal pressure plate 3, one end of the top plate 5 is rotatably connected to the horizontal pressure plate 3, and the other end of the top plate 5 is magnetically fixed to the horizontal pressure plate 3, and a bursting needle 6 is installed between the needle frame 4 and the valve stem 2. The valve stem 2 is arranged to ensure auxiliary support for the bursting needle 6. At the same time, a stepped groove 30 is opened at the center of the horizontal pressure plate 3 to facilitate the stable installation of the needle holder 4, and then the head of the bursting needle 6 is limitedly installed by the needle holder 4. In this way, the valve stem 2 can be pressed and limited by the bursting needle 6 to ensure that the valve stem 2 can move up to open the valve body 1 only when the bursting needle 6 is broken. The top plate 5 is arranged to ensure that the needle holder 4 can be limitedly installed after being placed in the stepped groove 30.

[0023] Reference Figure 2 and Figure 4 As shown, the horizontal pressing plate 3 includes a main plate 31 and a T-shaped metal frame 32. The T-shaped metal frame 32 is arranged on the upper end surface of the main plate 31, and the T-shaped metal frame 32 is integrally formed with the main plate 31. The structural setting of the horizontal pressing plate 3 ensures that the T-shaped metal frame 32 is arranged on the main plate 31, and the T-shaped metal frame 32 can be sucked and fixed to the top plate 5 when it is easy to use.

[0024] Reference Figure 2 and Figure 5As shown, the needle holder 4 includes a ring cover 41 and a sleeve 42, and the sleeve 42 is arranged on the lower end surface of the ring cover 41, and the sleeve 42 is integrally formed with the ring cover 41. The structure of the needle holder 4 is set to ensure that the ring cover 41 is stably installed in the step groove 30, and the sleeve 42 is arranged at the lower end of the ring cover 41 to facilitate the sleeve 42 to be placed on the head of the blasting needle 6 for use. The upper end surface of the ring cover 41 is installed with a pick-up and placement handle 411, and the pick-up and placement handle 411 is fixedly connected to the ring cover 41. The setting of the pick-up and placement handle 411 facilitates and better takes and puts the needle holder 4.

[0025] Reference Figure 2 and Figure 3 As shown, the top plate 5 includes a strip plate 51 and a magnetic block 52, the magnetic block 52 is installed at one end of the strip plate 51, and the magnetic block 52 is fixedly connected to the strip plate 51. The magnetic block 52 is arranged on the strip plate 51 by the structural setting of the top plate 5, and the strip plate 51 can be fixed by the magnetic block 52 when it is easy to use. The upper end surface of the main plate 31 is provided with a rotating rod 311 for rotating and installing the strip plate 51, and the rotating rod 311 is fixedly connected to the main plate 31. The stable installation of the strip plate 51 is ensured by the setting of the rotating rod 311, and it can be flexibly rotated and adjusted when it is convenient to use.

[0026] Working principle: During actual installation and use, the lower end of the bursting needle can be supported on the head of the valve stem, and then the needle holder can be installed in the stepped groove, and the sleeve at the lower end of the needle holder can be sleeved on the head of the bursting needle to limit the bursting needle. Finally, the top plates at both ends are rotated to attract the two sides of the T-shaped metal frame, so that the needle holder can be limited by the top plate to ensure the stable pressure holding of the bursting needle by the needle holder.

[0027] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pressure differential bursting needle valve, comprising a valve body (1) and a valve stem (2), wherein the valve stem (2) is slidably mounted in the valve body (1), characterized in that: A support frame (11) is fixedly mounted on the upper end of the valve body (1), a horizontal pressure plate (3) is fixedly mounted on the head of the support frame (11), a stepped groove (30) is provided at the center of the horizontal pressure plate (3), a needle holder (4) is mounted in the stepped groove (30), and a top plate (5) of the limited needle holder (4) is also mounted on the upper end surface of the horizontal pressure plate (3), one end of the top plate (5) is rotatably connected to the horizontal pressure plate (3), and the other end of the top plate (5) is magnetically fixed to the horizontal pressure plate (3), and a bursting needle (6) is mounted between the needle holder (4) and the valve stem (2).

2. A differential pressure bursting needle valve according to claim 1, characterized in that: The horizontal pressing plate (3) comprises a main plate (31) and a T-shaped metal frame (32); the T-shaped metal frame (32) is arranged on the upper end surface of the main plate (31), and the T-shaped metal frame (32) and the main plate (31) are integrally formed.

3. A differential pressure bursting needle valve according to claim 2, characterized in that: The needle holder (4) comprises a ring cover (41) and a sleeve (42), wherein the sleeve (42) is arranged on the lower end surface of the ring cover (41), and the sleeve (42) and the ring cover (41) are integrally formed.

4. A differential pressure bursting needle valve according to claim 3, characterized in that: A pick-up and placement handle (411) is installed on the upper end surface of the ring cover (41), and the pick-up and placement handle (411) is fixedly connected to the ring cover (41).

5. A differential pressure bursting needle valve according to claim 4, characterized in that: The top plate (5) comprises a strip plate (51) and a magnetic block (52); the magnetic block (52) is mounted on one end of the strip plate (51), and the magnetic block (52) is fixedly connected to the strip plate (51).

6. A differential pressure bursting needle valve according to claim 5, characterized in that: The upper end surface of the main plate (31) is provided with a rotating rod (311) for rotatably mounting the strip plate (51), and the rotating rod (311) is fixedly connected to the main plate (31).

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