Corrosion-resistant high-pressure fire extinguisher valve structure

Abstract

The utility model discloses a corrosion-resistant high-pressure fire extinguisher valve structure which comprises a valve body, a nozzle communicated with the inside of the valve body is arranged on the side wall of the valve body, the lower end of the valve body is detachably connected with a vertical pipe seat, a handle is arranged at the upper end of the valve body, a convex ring is arranged on the outer side wall of the valve body and located between the handle and the vertical pipe seat, and the top of the convex ring is close to the handle. The bottom of the convex ring is far away from the handle, the valve body is sleeved with an O-shaped ring, the O-shaped ring is located at the bottom of the convex ring, the part, located at the bottom of the convex ring, of the valve body is wedge-shaped and sleeved with the O-shaped ring, the inner side of the convex ring is fixedly connected with the valve body, the outer side of the convex ring is provided with a plurality of L-shaped locking blocks, and the locking blocks are evenly distributed in the circumferential direction of the convex ring. One side of the locking block is in damping sliding connection with the protruding ring in the radial direction of the protruding ring, the magnetizer and the pull ring are fixed to the other side of the locking block, the magnetizer is located on one side of the locking block and forms a U-shaped structure together with the locking block, and the pull ring is located on the other corresponding side of the locking block. The utility model has the beneficial effect that the valve body is convenient to disassemble.

Description

Technical Field

[0001] This utility model relates to the technical field of corrosion-resistant high-pressure fire extinguisher valves, and in particular to a corrosion-resistant high-pressure fire extinguisher valve structure. Background Technology

[0002] The basic structure of a fire extinguisher includes an extinguisher cylinder and a valve assembly connected to the cylinder. The valve assembly comprises a valve body and a valve stem assembly. The extinguisher cylinder has external threads, and the valve body has internal threads; the cylinder and valve body are threaded together. The valve body has an extinguishing agent outlet, an extinguishing agent inlet, and a pressure gauge connection interface. The extinguishing agent outlet and inlet are connected via an extinguishing agent outflow channel. The valve stem assembly controls the flow between the extinguishing agent outlet and inlet. The extinguishing agent outlet is connected to an extinguishing agent output pipe located at the bottom center of the cylinder, which extends into the cylinder during use. During use, when the valve stem assembly opens the flow channel, the extinguishing agent in the cylinder flows through the extinguishing agent delivery pipe into the valve body and then out through the extinguishing agent outlet.

[0003] However, existing fire extinguisher valves have the following shortcomings: when the fire extinguisher is tilted or inverted, the extinguishing agent is prone to backflow and contact with the internal threads of the fire extinguisher cylinder, causing corrosion and rust. This increases the difficulty of disassembling the fire extinguisher cylinder and valve body, making it impossible to refill the fire extinguisher with extinguishing agent for reuse. There is even a safety hazard of the fire extinguisher exploding. Utility Model Content

[0004] The present invention aims to overcome the shortcomings of the prior art in which the backflow of extinguishing agent makes it difficult to disassemble the fire extinguisher cylinder and valve body, and provides a corrosion-resistant high-pressure fire extinguisher valve structure that facilitates valve body disassembly.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A corrosion-resistant high-pressure fire extinguisher valve structure includes a valve body with a nozzle communicating with its interior on its side wall. A riser seat is detachably connected to the lower end of the valve body. A handle is located at the upper end of the valve body. A convex ring is located on the outer side wall of the valve body between the handle and the riser seat. The top of the convex ring is close to the handle, and the bottom is away from the handle. An O-ring is fitted onto the valve body at the bottom of the convex ring. The portion of the valve body at the bottom of the convex ring is wedge-shaped and fitted with the O-ring. The inner side of the convex ring is fixedly connected to the valve body. Several L-shaped locking blocks are evenly distributed along the circumference of the convex ring on its outer side. One side of each locking block is slidably connected to the convex ring along its radial direction. A magnetic conductor and a pull ring are fixed on the other side of each locking block. The magnetic conductor is located on one side of the locking block and forms a U-shaped structure with the locking block. The pull ring is located on the opposite side of the locking block.

[0007] The valve body has a nozzle on its side wall that communicates with its interior. The lower end of the valve body is detachably connected to a riser seat. The upper end of the valve body has a handle. The outer side wall of the valve body has a convex ring located between the handle and the riser seat. The top of the convex ring is close to the handle, and the bottom of the convex ring is away from the handle. An O-ring is fitted on the valve body, located at the bottom of the convex ring. The portion of the valve body at the bottom of the convex ring is wedge-shaped and fitted with an O-ring. The inner side of the convex ring is fixedly connected to the valve body. Several L-shaped locking blocks are provided on the outer side of the convex ring. The locking blocks are evenly distributed along the circumference of the convex ring. One side of the locking block is slidably connected to the convex ring along its radial direction. A magnetic conductor and a pull ring are fixed on the other side of the locking block. The magnetic conductor is located on one side of the locking block and forms a U-shaped structure with the locking block. The pull ring is located on the opposite side of the locking block. Before assembling the fire extinguisher cylinder and valve, several locking blocks are pulled outwards, away from the valve body sidewall, to facilitate the insertion of the valve body into the assembly port of the fire extinguisher cylinder. During this process, the convex ring often has a sliding track with a limiting structure to ensure positioning when the locking blocks are pulled to their limit. Since this is existing technology, it will not be elaborated upon here. The wedge-shaped portion of the valve body is thicker at the top and thinner at the bottom. When installing the fire extinguisher cylinder and valve, the lower end of the valve body with the riser seat (i.e., the wedge-shaped portion of the valve body) is inserted into the cylindrical assembly port on the fire extinguisher cylinder. The assembly port and the thicker upper end of the wedge-shaped portion of the valve body fit tightly together to press against each other. Tighten the O-rings to ensure a good seal. The O-rings are made of corrosion-resistant materials, such as FKM. The thinner part of the wedge-shaped section of the valve body forms a gap with the side wall of the assembly port to prevent corrosion and rust from causing the valve body to stick to the inner side wall of the assembly port. There are several slots on the outer side wall of the fire extinguisher assembly port that match the magnetic conductors on the locking blocks. Permanent magnets are fixed in the slots. When the valve body is inserted into place, pushing the locking blocks will insert the magnetic conductors into the corresponding slots and attract them to the permanent magnets, thus locking them in place. The pull ring makes it easy to pull the locking blocks outward, making it easy to disassemble the valve body.

[0008] Preferably, the lower end of the valve body is provided with a groove, and the riser seat is detachably connected to the opening end of the groove. The riser seat has a flow channel communicating with the interior of the groove. A valve chamber communicating with the bottom center of the groove is provided. The nozzle is located on the side wall of the valve chamber and communicates with the interior of the valve chamber. A valve stem assembly is provided inside the valve body. The upper end of the valve stem assembly penetrates the top of the valve chamber and is connected to the handle. Driven by the handle, the portion of the valve stem assembly penetrating the top of the valve chamber is slidably and sealingly connected to the top of the valve chamber. The lower end of the valve stem assembly is located within the groove and contacts the bottom of the groove, completely sealing the valve chamber. The handle consists of a pressure handle and a lifting handle. The operator pushes the valve stem assembly downwards by pressing down the pressure handle to open the valve chamber and spray the extinguishing agent, which is existing technology and will not be described in detail here.

[0009] Preferably, the valve stem assembly includes a rod and a valve block. The upper end of the rod is connected to the handle, and the lower end of the rod is detachably connected to the valve block. The valve block is located within a groove and contacts the bottom of the groove, completely sealing the valve cavity. The top of the valve cavity has a through hole. The upper half of the rod is slidably and sealingly connected to the through hole, and a glass bead is provided on its side wall. One end of the glass bead is embedded in the side wall of the rod and fixedly connected to the rod. The side wall of the through hole has several positioning grooves that match the other end of the glass bead. These positioning grooves are evenly distributed along the length of the through hole. The lower half of the rod corresponds to the nozzle. When the handle is pressed down, the rod moves downward and matches the glass bead with different positioning grooves, allowing the handle to stop at the corresponding position without requiring the operator to press the handle continuously, thus saving effort and facilitating operation. The glass bead has a built-in spring, which is existing technology and will not be described in detail here.

[0010] Preferably, the diameter of the upper half of the rod is larger than the diameter of the lower half of the rod.

[0011] Preferably, the lower half of the rod is located inside the valve cavity and is equipped with a stop block. The stop block is located on the side of the rod and has several connecting pieces on one side. A gap is formed between one side of the stop block and the rod, and the stop block is fixedly connected to the rod through the connecting pieces. The corresponding other side of the stop block contacts the side wall of the valve cavity and completely blocks the nozzle. The stop block slides up and down with the side wall of the valve cavity under the drive of the handle. In the initial state, the stop block completely blocks the nozzle. When the handle is pressed down, the rod moves downward and moves the stop block down. During the above process, the rod matches different positioning grooves through glass beads, so that the handle can stop at the corresponding position. At the same time, it is convenient to adjust the area of ​​the nozzle, thereby facilitating the adjustment of the extinguishing agent spray flow rate according to the actual situation.

[0012] The beneficial effects of this utility model are:

[0013] 1. The wedge-shaped part of the valve body fits into the fire extinguisher mounting port. On the one hand, it compresses the O-ring to achieve a sealing effect. On the other hand, it reduces the contact area between the valve body and the fire extinguisher mounting port, so as to reduce the degree of adhesion between the inner wall of the mounting port and the valve body after corrosion and rust. It is locked by an external locking block, which facilitates the disassembly of the valve body.

[0014] 2. The rod body matches different positioning slots with glass beads, so that the handle can stop in the corresponding position, without the operator having to press the handle with force all the time, which saves strength and makes it easier to operate;

[0015] 3. It facilitates the adjustment of the nozzle opening area, thereby allowing for the adjustment of the extinguishing agent flow rate according to actual conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 yes Figure 1 Sectional view of CC;

[0018] Figure 3 yes Figure 2 Enlarged view of the structure at point A in the middle;

[0019] Figure 4 yes Figure 2 Enlarged view of the structure at point B;

[0020] Figure 5 This is a structural schematic diagram of the valve stem assembly.

[0021] In the diagram: 1. Valve body, 2. Nozzle, 3. Riser seat, 4. Handle, 5. Raised ring, 6. O-ring, 7. Locking block, 8. Magnetic conductor, 9. Pull ring, 10. Groove, 11. Flow channel, 12. Valve cavity, 13. Valve stem assembly, 14. Stem body, 15. Valve block, 16. Through hole, 17. Glass bead, 18. Positioning groove, 19. Stop block, 20. Connecting piece. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] 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.

[0024] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of components illustrated in these embodiments do not limit the scope of this application. For ease of illustration, spatial relative terms such as “upper,” “lower,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “below” other elements or features would be fixed “upper” to other elements or features. Thus, the exemplary term “lower” can include both upper and lower orientations. The device may be fixed in other ways (rotated 90 degrees or located in other orientations), and the spatial relative descriptions used herein can be interpreted accordingly. It should also be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale. Techniques, processes, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, processes, and equipment 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 limiting. 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 discussed further in subsequent figures.

[0025] 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 application.

[0026] like Figure 1 , Figure 2 and Figure 3 In the embodiments described, a corrosion-resistant high-pressure fire extinguisher valve structure includes a valve body 1, a nozzle 2 connected to the inside of the valve body 1 on its side wall, a riser seat 3 detachably connected to the lower end of the valve body 1, a handle 4 at the upper end of the valve body 1, a convex ring 5 on the outer side wall of the valve body 1, the convex ring 5 being located between the handle 4 and the riser seat 3, the top of the convex ring 5 being close to the handle 4, and the bottom of the convex ring 5 being away from the handle 4. The convex ring 5 is characterized in that the inner side of the convex ring 5 is fixedly connected to the valve body 1, the portion of the valve body 1 at the bottom of the convex ring 5 is wedge-shaped and fitted with an O-ring 6, and several L-shaped locking blocks 7 are provided on the outer side of the convex ring 5. The locking blocks 7 are evenly distributed along the circumference of the convex ring 5, one side of the locking block 7 is slidably connected to the convex ring 5 along the radial direction of the convex ring 5, and a magnetic conductor 8 and a pull ring 9 are fixed on the other side of the locking block 7. The magnetic conductor 8 is located on one side of the locking block 7 and forms a U-shaped structure together with the locking block 7, and the pull ring 9 is located on the opposite side of the locking block 7.

[0027] like Figure 2 and Figure 4 As shown, the lower end of the valve body 1 is provided with a groove 10, and the riser seat 3 is detachably connected to the opening end of the groove 10. The riser seat 3 is provided with a flow channel 11 that communicates with the inside of the groove 10. The bottom center of the groove 10 is provided with a valve cavity 12 that communicates with it. The nozzle 2 is located on the side wall of the valve cavity 12 and communicates with the inside of the valve cavity 12. The valve body 1 is provided with a valve stem assembly 13. The upper end of the valve stem assembly 13 passes through the top of the valve cavity 12 and is connected to the handle 4. Under the drive of the handle 4, the part of the valve stem assembly 13 that passes through the top of the valve cavity 12 is sealed and slidably connected to the top of the valve cavity 12. The lower end of the valve stem assembly 13 is located in the groove 10 and contacts the bottom of the groove 10. The lower end of the valve stem assembly 13 completely blocks the valve cavity 12.

[0028] like Figure 2 , Figure 4 and Figure 5 As shown, the valve stem assembly 13 includes a stem 14 and a valve block 15. The upper end of the stem 14 is connected to the handle 4, and the lower end of the stem 14 is detachably connected to the valve block 15. The valve block 15 is located in the groove 10 and contacts the bottom of the groove 10. The valve block 15 completely seals the valve cavity 12. The diameter of the upper half of the stem 14 is larger than the diameter of the lower half of the stem 14. The top of the valve cavity 12 is provided with a through hole 16. The upper half of the stem 14 is slidably connected to the through hole 16 and has a glass bead 17 on its side wall. One end of the glass bead 17 is embedded in the side wall of the stem 14 and is fixedly connected to the stem 14. The side wall of the through hole 16 is provided with a number of positioning grooves 18 that match the other end of the glass bead 17. The number of positioning grooves 18 are evenly distributed along the length of the through hole 16.

[0029] like Figure 4 and Figure 5 As shown, the lower half of the rod 14 is located inside the valve cavity 12 and is provided with a stop block 19. The stop block 19 is located on the side of the rod 14 and has several connecting pieces 20 on one side. A gap is formed between one side of the stop block 19 and the rod 14 and it is fixedly connected to the rod 14 through several connecting pieces 20. The other side of the stop block 19 is in contact with the side wall of the valve cavity 12 and completely blocks the nozzle 2. The stop block 19 is slidably connected to the side wall of the valve cavity 12 under the drive of the handle 4.

[0030] Before assembling the fire extinguisher cylinder and valve, the operator pulls several locking blocks 7 outwards, away from the side wall of the valve body 1, so that the lower end of the valve body 1 with the riser seat 3 can be inserted into the assembly port of the fire extinguisher cylinder. During this process, the convex ring 5 is often equipped with a sliding track (such as a T-slot) with a limiting structure, so that the locking blocks 7 can be limited when pulled outwards to the limit. Since this is existing technology, it will not be described in detail here. The wedge-shaped part of the valve body 1 is thicker at the top and thinner at the bottom. When installing the fire extinguisher cylinder and valve, the lower end of the valve body 1 with the riser seat 3 (i.e., the wedge-shaped part of the valve body 1) is inserted into the cylindrical assembly port on the fire extinguisher cylinder. The assembly port and the wedge-shaped part of the valve body 1 are relatively close. The thicker upper end fits tightly to press the O-ring 6, ensuring a sealing effect. The O-ring 6 is made of corrosion-resistant material, such as FKM. The thinner part of the wedge-shaped portion of the valve body 1 forms a gap with the side wall of the assembly port, reducing the adhesion between the valve body 1 and the inner side wall of the assembly port after corrosion and rust. Several slots are provided on the outer side wall of the fire extinguisher assembly port, which match the magnetic conductors on the locking blocks 7 one by one. Permanent magnets are fixed in the slots. When the valve body 1 is inserted into place, pushing several locking blocks 7 will insert the magnetic conductors into the corresponding slots and attract them to the permanent magnets, thus locking them. The pull ring 9 makes it easy to pull the locking blocks 7 outward, facilitating the disassembly of the valve body 1.

[0031] When the fire extinguisher is in operation, the handle 4 is pressed down, and the rod 14 moves downward accordingly. It matches the different positioning slots 18 through the glass beads 17, so that the handle 4 can stop in the corresponding position. The operator does not need to press the handle 4 with force all the time, which saves strength and makes it easier to operate. The glass beads 17 have a built-in spring, which is existing technology, so it will not be described in detail here.

[0032] In the above process, in the initial state, the stop 19 completely blocks the nozzle 2; when the handle 4 is pressed down, the rod 14 moves down and drives the stop 19 to move down. In the above process, the rod 14 matches different positioning grooves 18 through the glass beads 17, so that the handle 4 can stay at the corresponding position. At the same time, the stop 19 facilitates the adjustment of the opening area of ​​the nozzle 2, thereby facilitating the adjustment of the extinguishing agent spray flow rate according to the actual situation.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A corrosion-resistant high-pressure fire extinguisher valve structure, comprising a valve body (1), wherein a nozzle (2) communicating with the interior is provided on the side wall of the valve body (1), a riser seat (3) is detachably connected to the lower end of the valve body (1), a handle (4) is provided at the upper end of the valve body (1), and a protruding ring (5) is provided on the outer side wall of the valve body (1), wherein the protruding ring (5) is located between the handle (4) and the riser seat (3), the top of the protruding ring (5) is close to the handle (4), and the bottom of the protruding ring (5) is far from the handle (4), characterized in that, The inner side of the convex ring (5) is fixedly connected to the valve body (1). The part of the valve body (1) located at the bottom of the convex ring (5) is wedge-shaped and fitted with an O-ring (6). The outer side of the convex ring (5) is provided with several L-shaped locking blocks (7). The several locking blocks (7) are evenly distributed along the circumference of the convex ring (5). One side of the locking block (7) is damped and slidably connected to the convex ring (5) along the radial direction of the convex ring (5). A magnetic conductor (8) and a pull ring (9) are fixed on the other side of the locking block (7). The magnetic conductor (8) is located on one side of the locking block (7) and forms a U-shaped structure together with the locking block (7). The pull ring (9) is located on the other side corresponding to the locking block (7).

2. The corrosion-resistant high-pressure fire extinguisher valve structure according to claim 1, characterized in that, The lower end of the valve body (1) is provided with a groove (10). The riser seat (3) is detachably connected to the opening end of the groove (10). The riser seat (3) is provided with a flow channel (11) that communicates with the inside of the groove (10). The bottom center of the groove (10) is provided with a valve cavity (12) that communicates with it. The nozzle (2) is located on the side wall of the valve cavity (12) and communicates with the inside of the valve cavity (12). The valve body (1) is provided with a valve stem assembly (13). The upper end of the valve stem assembly (13) passes through the top of the valve cavity (12) and is connected to the handle (4). Under the drive of the handle (4), the part of the valve stem assembly (13) that passes through the top of the valve cavity (12) is sealed and slidably connected to the top of the valve cavity (12). The lower end of the valve stem assembly (13) is located in the groove (10) and is in contact with the bottom of the groove (10). The lower end of the valve stem assembly (13) completely blocks the valve cavity (12).

3. The corrosion-resistant high-pressure fire extinguisher valve structure according to claim 2, characterized in that, The valve stem assembly (13) includes a rod body (14) and a valve block (15). The upper end of the rod body (14) is connected to the handle (4), and the lower end of the rod body (14) is detachably connected to the valve block (15). The valve block (15) is located in the groove (10) and contacts the bottom of the groove (10). The valve block (15) completely seals the valve cavity (12). The top of the valve cavity (12) is provided with a through hole (16). The upper half of the rod body (14) The part is sealed and slidably connected to the through hole (16) and has a glass bead (17) on its side wall. One end of the glass bead (17) is embedded in the side wall of the rod (14) and fixedly connected to the rod (14). The side wall of the through hole (16) is provided with a number of positioning grooves (18) that match the other end of the glass bead (17). The number of positioning grooves (18) are evenly distributed along the length direction of the through hole (16). The lower half of the rod (14) corresponds to the nozzle (2).

4. The corrosion-resistant high-pressure fire extinguisher valve structure according to claim 3, characterized in that, The diameter of the upper half of the rod (14) is greater than the diameter of the lower half of the rod (14).

5. The corrosion-resistant high-pressure fire extinguisher valve structure according to claim 3, characterized in that, The lower half of the rod (14) is located inside the valve cavity (12) and is provided with a stop block (19). The stop block (19) is located on the side of the rod (14) and is provided with several connecting pieces (20) on one side. A gap is formed between one side of the stop block (19) and the rod (14) and it is fixedly connected to the rod (14) through several connecting pieces (20). The other side of the stop block (19) is in contact with the side wall of the valve cavity (12) and completely blocks the nozzle (2). The stop block (19) is slidably connected to the side wall of the valve cavity (12) under the drive of the handle (4).

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