Fireproof valve with adjustable valve rod

Abstract

According to the fireproof valve with the adjustable valve rod, a driving disc is arranged above a frame, a fixing shaft fixed to the middle of the frame is arranged at the lower end of the driving disc, the bottom end of the fixing shaft is rotationally connected with the frame, a shifting block is fixedly arranged in the middle of the fixing shaft, and a first valve rod is fixedly arranged on the outer wall of the shifting block; the first valve rod is provided with a second valve rod, the second valve rod is inserted into the first valve rod, the second valve rod is in threaded connection with the first valve rod, the second valve rod is rotated, and the second valve rod can extend out of the first valve rod through the effect of a threaded structure, so that the force arm when the shifting block is operated can be increased, and the shifting block can be operated more stably. And therefore, the driving disc can rotate conveniently, the valve plate can be opened and closed more conveniently, and the limitation during use is low.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof valves, in particular to a fireproof valve with an adjustable valve stem. Background Art

[0002] Fire dampers are common components in pipeline systems. They are normally open valves that are automatically or manually opened by a control center. They are usually composed of a valve body, a valve stem, and a controller.

[0003] The size of the valve stem of the existing fireproof valve is fixed when in use. If the force arm of the valve stem is too short, it will be inconvenient for some personnel to open it manually, which has high limitations during use. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a fire-proof valve with an adjustable valve stem.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fire-proof damper with an adjustable valve stem, comprising a frame, two valve plates symmetrically arranged in the frame, a positioning shaft penetrating the frame is provided at the outer end of the valve plate, the bottom end of the positioning shaft is rotatably connected to the frame, a push rod is fixedly arranged at the top of the positioning shaft, a driving disk is provided above the frame, a fixed shaft fixed to the middle part of the frame is provided at the lower end of the driving disk, the bottom end of the fixed shaft is rotatably connected to the frame, a toggle block is fixedly arranged in the middle part of the fixed shaft, a first valve stem is fixedly arranged on the outer wall of the toggle block, a second valve stem is provided on the first valve stem, the second valve stem is inserted into the interior of the first valve stem, and the second valve stem is threadedly connected to the first valve stem, a driving rod is rotatably arranged at one end of the push rod, and one end of the driving rod is rotatably connected to the circumferential side of the driving disk.

[0008] In order to facilitate fixing the position of the drive disk, the utility model has the following improvements: a plurality of side blocks are provided on the circumference of the drive disk, a plurality of limit seats are fixedly provided on the upper end of the frame, and a limit rod is provided on the drive disk which passes through the side blocks and is inserted into the limit seat.

[0009] Furthermore, the improvement of the utility model is that the limit rod is threadedly connected to the limit seat.

[0010] Furthermore, the utility model has the following improvements: one end of the push rod is provided with a first protrusion passing through the driving rod, the first protrusion is rotatably connected to one end of the driving rod, and the circumferential side of the driving disk is provided with a second protrusion passing through the other end of the driving rod, the second protrusion is rotatably connected to the driving rod.

[0011] Furthermore, the present invention has been improved in that the positioning shaft, the push rod, the driving rod, the driving plate, the fixed shaft and the toggle block are all made of metal.

[0012] Furthermore, the present invention has been improved in that the positioning shaft, the push rod, the driving rod, the driving plate, the fixed shaft and the toggle block are all made of aluminum alloy.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a fire-proof valve with an adjustable valve stem, which has the following beneficial effects:

[0015] The fire-proof valve with adjustable valve stem can extend the second valve stem from the first valve stem by rotating the second valve stem through the action of the threaded structure, thereby increasing the force arm when operating the toggle block, thereby facilitating the rotation of the drive disk, making it more convenient to open and close the valve plate, and reducing limitations during use;

[0016] Rotating the first valve stem can cause the toggle block to drive the drive disk to rotate, and the drive disk can further drive the push rod to rotate through the drive rod, so that the positioning shaft can drive the valve plate to rotate, and the two valve plates can be opened synchronously in the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 For this utility model Figure 1 The main view;

[0019] Figure 3 For this utility model Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0020] In the figure: 1. frame; 2. valve plate; 3. positioning shaft; 4. push rod; 5. driving rod; 6. first protrusion; 7. second protrusion; 8. driving disk; 9. fixed shaft; 10. toggle block; 11. first valve stem; 12. second valve stem; 13. side block; 14. limit rod; 15. limit seat. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0022] See also Figure 1-3The utility model is a fire damper with adjustable valve stem, comprising a frame 1, wherein two valve plates 2 are symmetrically arranged in the frame 1, a positioning shaft 3 penetrating the frame 1 is arranged at the outer end of the valve plate 2, the bottom end of the positioning shaft 3 is rotatably connected to the frame 1, a top rod 4 is fixedly arranged at the top of the positioning shaft 3, a driving disk 8 is arranged above the frame 1, a fixed shaft 9 fixed to the middle part of the frame 1 is arranged at the lower end of the driving disk 8, the bottom end of the fixed shaft 9 is rotatably connected to the frame 1, a toggle block 10 is fixedly arranged at the middle part of the fixed shaft 9, a first valve stem 11 is fixedly arranged on the outer wall of the toggle block 10, a second valve stem 12 is arranged on the first valve stem 11, the second valve stem 12 is inserted into the interior of the first valve stem 11, and the second valve stem 12 is threadedly connected to the first valve stem 11, a driving rod 5 is rotatably arranged at one end of the top rod 4, and one end of the driving rod 5 is rotatably connected to the peripheral side of the driving disk 8;

[0023] When the valve plate 2 needs to be opened, the first valve stem 11 is rotated, so that the toggle block 10 can drive the driving disk 8 to rotate, and the driving disk 8 can further drive the top rod 4 to rotate through the driving rod 5, so that the positioning shaft 3 can drive the valve plate 2 to rotate, and the two valve plates 2 can be opened synchronously in the frame 1. During this process, if the operator's strength is not enough, the second valve stem 12 is rotated. Through the action of the threaded structure, the second valve stem 12 can be extended in the first valve stem 11, thereby increasing the force arm when operating the toggle block 10, and then the driving disk 8 can be easily rotated, which can make the valve plate 2 more convenient to open and close, and has low limitations during use.

[0024] The lack of a limiting structure at the driving disk 8 will affect the stability of the valve plate 2 when in use. The peripheral side of the driving disk 8 is provided with a plurality of side blocks 13, and a plurality of limiting seats 15 are fixedly provided at the upper end of the frame 1. The driving disk 8 is provided with a limiting rod 14 that penetrates the side blocks 13 and is inserted into the limiting seat 15. When the valve plate 2 is closed, the position of the driving disk 8 is as follows: Figure 1 As shown, the driving disk 8 can be limited by the limiting rod 14, which can improve the stability of the valve plate 2 when in use. When the valve plate 2 is opened, the limiting rod 14 can be passed through different side blocks 13, and the number of side blocks 13 is not mandatory here.

[0025] Furthermore, the limiting rod 14 is threadedly connected to the limiting seat 15, so that the limiting rod 14 can be installed on the limiting seat 15 more firmly and the limiting rod 14 is not easy to fall off.

[0026] Furthermore, one end of the push rod 4 is provided with a first protrusion 6 that passes through the driving rod 5, and the first protrusion 6 is rotatably connected to one end of the driving rod 5. The peripheral side of the driving disk 8 is provided with a second protrusion 7 that passes through the other end of the driving rod 5, and the second protrusion 7 is rotatably connected to the driving rod 5. Through the first protrusion 6 and the second protrusion 7, a positioning effect can be provided to the two ends of the driving rod 5 on the push rod 4 and the driving disk 8, which can improve the stability of the driving rod 5 when in use.

[0027] Furthermore, the positioning shaft 3, push rod 4, drive rod 5, drive disk 8, fixed shaft 9 and toggle block 10 are all made of metal, and the positioning shaft 3, push rod 4, drive rod 5, drive disk 8, fixed shaft 9 and toggle block 10 are all made of aluminum alloy, which has the advantages of high hardness and strong corrosion resistance.

[0028] In the description of this article, it should be noted that relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fireproof damper with an adjustable valve stem, comprising a frame (1), wherein two valve plates (2) are symmetrically arranged in the frame (1), and characterized in that: The outer end of the valve plate (2) is provided with a positioning shaft (3) penetrating the frame (1), the bottom end of the positioning shaft (3) is rotatably connected to the frame (1), a push rod (4) is fixedly arranged at the top end of the positioning shaft (3), a driving disk (8) is provided above the frame (1), a fixed shaft (9) fixed to the middle part of the frame (1) is provided at the lower end of the driving disk (8), the bottom end of the fixed shaft (9) is rotatably connected to the frame (1), a toggle block (10) is fixedly arranged at the middle part of the fixed shaft (9), a first valve stem (11) is fixedly arranged on the outer wall of the toggle block (10), a second valve stem (12) is provided on the first valve stem (11), the second valve stem (12) is inserted into the interior of the first valve stem (11), and the second valve stem (12) is threadedly connected to the first valve stem (11), a driving rod (5) is rotatably arranged at one end of the push rod (4), and one end of the driving rod (5) is rotatably connected to the peripheral side of the driving disk (8).

2. A fire-proof valve with an adjustable valve stem according to claim 1, characterized in that: A plurality of side blocks (13) are provided on the circumference of the driving disk (8), a plurality of limit seats (15) are fixedly provided on the upper end of the frame (1), and a limit rod (14) is provided on the driving disk (8) and passes through the side blocks (13) and is inserted into the limit seat (15).

3. A fire-proof valve with an adjustable valve stem according to claim 2, characterized in that: The limiting rod (14) is threadedly connected to the limiting seat (15).

4. A fire-proof valve with an adjustable valve stem according to claim 3, characterized in that: A first protrusion (6) penetrating the driving rod (5) is provided at one end of the push rod (4), the first protrusion (6) being rotatably connected to one end of the driving rod (5), and a second protrusion (7) penetrating the other end of the driving rod (5) is provided on the peripheral side of the driving disk (8), the second protrusion (7) being rotatably connected to the driving rod (5).

5. A fire-proof valve with an adjustable valve stem according to claim 4, characterized in that: The positioning shaft (3), the push rod (4), the driving rod (5), the driving disk (8), the fixed shaft (9) and the toggle block (10) are all made of metal.

6. A fire-proof valve with an adjustable valve stem according to claim 5, characterized in that: The positioning shaft (3), the push rod (4), the driving rod (5), the driving disk (8), the fixed shaft (9) and the toggle block (10) are all made of aluminum alloy.

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