Flame-retardant variable air volume butterfly valve

Abstract

The utility model discloses a flame-retardant variable air volume butterfly valve, and relates to the technical field of butterfly valves. The flame-retardant variable air volume butterfly valve comprises a valve body, and the valve body comprises a connecting pipe and a butterfly sheet rotationally arranged on the inner wall of the connecting pipe; the adjusting assembly is used for adjusting the angle of the butterfly sheet and comprises a fixing pipe embedded in the inner top wall of the connecting pipe and a speed reduction box arranged at the top end of the fixing pipe, and a mounting box is fixedly arranged on the upper surface of the speed reduction box; and a rotating rod which extends to the lower surface of the speed reduction box, penetrates through the fixing pipe and is fixedly connected with the surface of the butterfly sheet is rotationally arranged on the inner bottom wall of the speed reduction box. By arranging the wind speed sensor, the small PLC and the adjusting assembly, in the actual use process of the butterfly valve, when the air quantity passing through the connecting pipe needs to be adjusted, the purpose of automatically controlling the ventilation quantity of the butterfly valve can be achieved, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a flame retardant variable air volume butterfly valve. Background Art

[0002] The ventilation butterfly valve is used in dusty cold air or hot air gas pipelines of ventilation and environmental protection projects in the chemical, building materials, power stations, glass and other industries as a pipeline control device for regulating the flow or cutting off the gas medium. The existing patented PP integrated VAV variable air volume butterfly valve, patent publication number CN217539653U, includes a valve body, an adjustment mechanism is installed on the top of the valve body, the bottom of the adjustment mechanism extends into the interior of the valve body, both sides of the valve body are fixedly connected with fixed flanges, the outer wall of the valve body is fixedly connected with a support rod, and one side of the support rod is fixedly connected with a support block. The PP integrated VAV variable air volume butterfly valve, through the valve body, adjustment mechanism, fixed flange, support rod, support block, reset spring and positioning block, is conducive to positioning and clamping when installing the external flange, thereby solving the problem of cumbersome operation caused by multiple re-positioning when installing through bolts at different angles, thereby improving the convenience of installation work, while improving the sealing effect, solving the problem of poor sealing effect, and further solving the problem of easy leakage.

[0003] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: during actual use, the butterfly valve needs to be operated manually, and the manual operation method cannot accurately control the ventilation volume, that is, it cannot control the size of the opening of the butterfly valve disc, and its practicality is poor.

[0004] Therefore, we proposed a flame retardant variable air volume butterfly valve to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a flame-retardant variable air volume butterfly valve, which solves the problem that the ventilation volume cannot be accurately controlled.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a flame retardant variable air volume butterfly valve, comprising:

[0007] A valve body, the valve body comprising a connecting pipe and a butterfly rotatably arranged on the inner wall of the connecting pipe;

[0008] An adjustment component, which is used to adjust the angle of the butterfly, the adjustment component includes a fixed tube embedded in the top wall of the connecting tube, and a reduction box arranged on the top of the fixed tube, the upper surface of the reduction box is fixed with a mounting box, the inner bottom wall of the reduction box is rotatably provided with a rotating rod extending to the lower surface of the reduction box and penetrating the fixed tube and fixedly connected to the surface of the butterfly, and the rotating rod is rotatably connected to the inner wall of the fixed tube, and the inner bottom wall of the mounting box is provided with a driving motor for driving the rotating rod to rotate;

[0009] The wind speed sensor is used to monitor the ventilation volume in the connecting pipe. The wind speed sensor is embedded in the outer surface of the connecting pipe, and the probe of the wind speed sensor extends to the inside of the connecting pipe.

[0010] Preferably, a small PLC controller is also fixedly mounted on the inner bottom wall of the installation box, and the wind speed sensor and the drive motor are electrically connected to the small PLC controller via wires.

[0011] Preferably, a first connecting flange is fixedly provided on the top outer surface of the fixed tube, two symmetrical support frames are fixedly provided on the lower surface of the reduction box, and a second connecting flange is fixedly provided on the bottom end of the support frame, so as to facilitate quick installation and disassembly of the reduction box and the mounting box.

[0012] Preferably, a sealing ring for sealing the gap between the rotating rod and the fixed pipe is provided on the upper surface of the second connecting flange, so as to avoid air leakage of the butterfly valve when in use.

[0013] Preferably, a connecting shaft is rotatably provided on the inner top wall and the inner bottom wall of the reduction box, and the output end of the driving motor extends to the interior of the reduction box and is fixedly provided with a first pinion.

[0014] Preferably, the second small gear and the first large gear are fixedly provided on the outer surface of the connecting shaft, and the first large gear and the first small gear are meshed with each other.

[0015] Preferably, a second large gear is fixedly provided at the top of the rotating rod, and the second large gear and the second small gear are meshed with each other, wherein the arrangement of the first small gear, the first large gear, the second small gear and the second large gear can realize the deceleration of the driving motor, so that the driving motor can drive the butterfly to rotate slowly during the rotation process, thereby ensuring the accuracy of air volume regulation through heat insulation.

[0016] Beneficial Effects

[0017] The utility model provides a flame retardant variable air volume butterfly valve. Compared with the prior art, it has the following beneficial effects:

[0018] The flame-retardant variable air volume butterfly valve is provided with a wind speed sensor, a small PLC controller and an adjusting component, so that when the air volume passing through the connecting pipe needs to be adjusted during actual use of the butterfly valve, the ventilation volume of the butterfly valve can be automatically controlled, and the practicality is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a side view of the structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the reduction box installation box of the utility model;

[0022] Figure 4 For this utility model Figure 3 Enlarged structural diagram at A in the middle.

[0023] In the figure:

[0024] 100, valve body; 101, connecting pipe; 102, butterfly;

[0025] 200, adjustment assembly; 201, fixing pipe; 202, reduction box; 203, mounting box; 204, rotating rod; 205, driving motor; 206, first connecting flange; 207, supporting frame; 208, second connecting flange; 209, sealing ring; 2010, connecting shaft; 2011, first pinion; 2012, second pinion; 2013, first large gear; 2014, second large gear;

[0026] 300, wind speed sensor;

[0027] 400. Small PLC controller. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1-4 The utility model provides a technical solution: a flame retardant variable air volume butterfly valve, which includes:

[0030] The valve body 100 includes a connecting pipe 101 and a butterfly 102 rotatably disposed on the inner wall of the connecting pipe 101;

[0031] The adjusting component 200 is used to adjust the angle of the butterfly 102. The adjusting component 200 includes a fixed tube 201 embedded in the inner top wall of the connecting tube 101, and a reduction box 202 arranged at the top of the fixed tube 201. A first connecting flange 206 is fixedly provided on the top outer surface of the fixed tube 201, and two symmetrical supporting frames 207 are fixedly provided on the lower surface of the reduction box 202. A second connecting flange 208 is fixedly provided at the bottom end of the supporting frame 207, which can facilitate the quick installation and disassembly of the reduction box 202 and the installation box 203.

[0032] A sealing ring 209 is disposed on the upper surface of the second connecting flange 208 for sealing the gap between the rotating rod 204 and the fixed pipe 201 , thereby preventing the butterfly valve from leaking when in use.

[0033] The upper surface of the reduction box 202 is fixed with a mounting box 203, and the inner bottom wall of the reduction box 202 is rotatably provided with a rotating rod 204 extending to the lower surface of the reduction box 202 and penetrating the fixed tube 201 and fixedly connected to the surface of the butterfly 102, and the rotating rod 204 is rotatably connected to the inner wall of the fixed tube 201, and the inner bottom wall of the mounting box 203 is provided with a driving motor 205 for driving the rotating rod 204 to rotate;

[0034] The inner top wall and the inner bottom wall of the reduction box 202 are rotatably provided with a connecting shaft 2010 , and the output end of the driving motor 205 extends to the interior of the reduction box 202 and is fixedly provided with a first pinion 2011 .

[0035] The second small gear 2012 and the first large gear 2013 are fixedly disposed on the outer surface of the connecting shaft 2010 , and the first large gear 2013 is meshed with the first small gear 2011 .

[0036] A second large gear 2014 is fixedly disposed on the top of the rotating rod 204 , and the second large gear 2014 and the second small gear 2012 are meshed with each other.

[0037] The arrangement of the first small gear 2011, the first large gear 2013, the second small gear 2012 and the second large gear 2014 can achieve the deceleration of the driving motor 205, so that the driving motor 205 can drive the butterfly 102 to rotate slowly during the rotation process, thereby ensuring the accuracy of air volume regulation through thermal insulation.

[0038] The wind speed sensor 300 is used to monitor the ventilation volume in the connecting pipe 101 . The wind speed sensor 300 is embedded in the outer surface of the connecting pipe 101 , and the probe of the wind speed sensor 300 extends into the interior of the connecting pipe 101 .

[0039] The flame-retardant variable air volume butterfly valve is provided with a wind speed sensor 300, a small PLC controller 400 and an adjustment component 200, so that the butterfly valve can achieve the purpose of automatically controlling the ventilation volume of the butterfly valve during actual use, and has strong practicality.

[0040] It should be noted that after the butterfly valve is manufactured and assembled, its surface is sprayed with fire retardant coating, so that the butterfly valve has good flame retardant and waterproof properties.

[0041] During operation, when the butterfly valve is actually used and it is necessary to adjust the air volume passing through the connecting pipe 101, the small PLC controller 400 can be controlled by an external controller in advance to input the value of the wind speed sensor 300 in advance, and then the drive motor 205 is started. The rotation of the drive motor 205 drives the connecting shaft 2010 to decelerate under the action of the first small gear 2011 and the first large gear 2013. At the same time, the rotation of the connecting shaft 2010 drives the rotating rod 204 to decelerate under the action of the second small gear 2012 and the second large gear 2014, thereby driving the butterfly 102 to rotate slowly inside the connecting pipe 101, thereby realizing automatic adjustment of the ventilation volume. When the ventilation volume reaches the value preset by the wind speed sensor 300, the wind speed sensor 300 transmits a signal to the small PLC controller 400, and the small PLC controller 400 automatically controls the drive motor 205 to close, thereby realizing the purpose of automatically controlling the ventilation volume of the butterfly valve, which is highly practical.

[0042] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A flame retardant variable air volume butterfly valve, characterized in that: include, A valve body (100), the valve body (100) comprising a connecting pipe (101) and a butterfly (102) rotatably arranged on the inner wall of the connecting pipe (101); An adjustment component (200) is used to adjust the angle of the butterfly (102), the adjustment component (200) comprising a fixed tube (201) embedded in the inner top wall of the connecting tube (101), and a reduction box (202) arranged at the top of the fixed tube (201), the upper surface of the reduction box (202) is fixedly provided with a mounting box (203), the inner bottom wall of the reduction box (202) is rotatably provided with a rotating rod (204) extending to the lower surface of the reduction box (202) and penetrating the fixed tube (201) and fixedly connected to the surface of the butterfly (102), and the rotating rod (204) is rotatably connected to the inner wall of the fixed tube (201), and the inner bottom wall of the mounting box (203) is provided with a driving motor (205) for driving the rotating rod (204) to rotate; A wind speed sensor (300) is used to monitor the ventilation volume in the connecting pipe (101); the wind speed sensor (300) is embedded in the outer surface of the connecting pipe (101), and a probe of the wind speed sensor (300) extends into the interior of the connecting pipe (101).

2. The flame retardant variable air volume butterfly valve according to claim 1, characterized in that: A small PLC controller (400) is also fixedly mounted on the inner bottom wall of the installation box (203), and the wind speed sensor (300) and the drive motor (205) are both electrically connected to the small PLC controller (400) via wires.

3. The flame retardant variable air volume butterfly valve according to claim 1, characterized in that: A first connecting flange (206) is fixedly provided on the outer surface of the top end of the fixed tube (201), two symmetrical supporting frames (207) are fixedly provided on the lower surface of the reduction box (202), and a second connecting flange (208) is fixedly provided on the bottom end of the supporting frame (207).

4. The flame retardant variable air volume butterfly valve according to claim 3, characterized in that: A sealing ring (209) for sealing the gap between the rotating rod (204) and the fixed pipe (201) is provided on the upper surface of the second connecting flange (208).

5. The flame retardant variable air volume butterfly valve according to claim 1, characterized in that: The inner top wall and the inner bottom wall of the reduction box (202) are rotatably provided with a connecting shaft (2010), and the output end of the driving motor (205) extends to the interior of the reduction box (202) and is fixedly provided with a first pinion (2011).

6. The flame retardant variable air volume butterfly valve according to claim 5, characterized in that: The second small gear (2012) and the first large gear (2013) are respectively fixedly disposed on the outer surface of the connecting shaft (2010), and the first large gear (2013) and the first small gear (2011) are meshed with each other.

7. The flame retardant variable air volume butterfly valve according to claim 6, characterized in that: A second large gear (2014) is fixedly disposed at the top end of the rotating rod (204), and the second large gear (2014) and the second small gear (2012) are meshed with each other.

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