Ventilation device with gravity non-return function air valve

Abstract

The utility model discloses a ventilation device with an air valve with a gravity non-return function, which comprises a regulating valve shell, a plurality of first fixing shafts and a valve body assembly, the plurality of first fixing shafts are uniformly arranged and welded on the inner side of the regulating valve shell, the valve body assembly comprises a first valve body, and a second valve body is welded on the inner side of the regulating valve shell. The first valve body comprises a first guide sliding rod welded to a first fixing shaft, adjusting valve plates are installed on the two sides of the first fixing shaft, and sliding blocks are installed on the adjusting valve plates. The air volume adjusting device has the air volume adjusting function and the gravity non-return function at the same time and is easy to adjust, the limit opening degree of the valve can be changed by adjusting the limiting screw or rotating the hand wheel, and then the air volume of the valve is adjusted; in addition, the device can be automatically started during air supply and automatically closed under the action of gravity when air supply is stopped, air backflow is prevented, the device is applied to a ground air supply system, and a good room thermal environment can be obtained by adjusting the air supply volume and stopping gravity return.

Description

Technical Field

[0001] The utility model relates to the technical field of ground air supply, in particular to a ventilation device with a gravity check valve function. Background Technique

[0002] Displacement ventilation usually supplies air at the bottom of a room. The air flow absorbs the heat of the people in the lower part of the room to form a thermal plume, and pollutants in the room can be effectively discharged through roof exhaust. Ground air supply is a common air supply method in displacement ventilation. The air ducts, air valves, and air outlets for ground air supply are all located under the ground, and it is difficult to install the air valves and adjust the air volume, which has a negative impact on the indoor air flow organization and ventilation effect. At the same time, if the air with a large amount of waste heat flows back, it will also cause certain damage to the ventilation system. Content of the Utility Model

[0003] The purpose of the utility model is to solve the above technical problems, and a ventilation device with a gravity check valve function is proposed.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A ventilation device with a gravity check valve function includes a regulating valve housing and a plurality of first fixed shafts. The plurality of uniformly arranged first fixed shafts are welded inside the regulating valve housing, and a valve body assembly. The valve body assembly includes a first valve body. The first valve body includes a first guiding slide bar welded on the first fixed shaft. Regulating valve plates are installed on both sides of the first fixed shaft. Sliders are installed on the regulating valve plates. Limiting screw holes are provided on the first guiding slide bar, and limiting screws are installed in the limiting screw holes.

[0006] Preferably, the regulating valve plate is hinged to the first fixed shaft through a rotating shaft and is symmetrically arranged.

[0007] Preferably, the slider is hinged to the regulating valve plate through a connecting rod.

[0008] Preferably, the valve body assembly includes a second valve body. The second valve body includes a regulating valve housing and a plurality of second fixed shafts. The plurality of uniformly arranged second fixed shafts are welded inside the regulating valve housing. The second fixed shafts are provided with second guiding slide bars. A handwheel is fixed at the upper end of the second guiding slide bar. The regulating valve plate is hinged to the second fixed shaft through a rotating shaft and is symmetrically arranged.

[0009] Preferably, the second guiding slide bar is threadedly connected to the second fixed shaft through a nut.

[0010] Preferably, a concrete wall platform is cast by sinking the ground, and the regulating valve housing is fixed on the concrete wall platform through an installation flange and a fixing device.

[0011] Preferably, the first fixed shaft is a tubular body with a rectangular cross-section, and the slider can slide up and down on the first guiding slide bar; the limit opening degree of the regulating valve plate is restricted by the position of the limit screw, and the maximum opening degree is to open vertically upward, and when the valve is closed, the regulating valve plate is in the horizontal position; according to the engineering air supply requirements, the valve can be set with three different maximum air volumes, and three limit screw holes are correspondingly set according to the air valve opening degree required by the maximum air volume.

[0012] Preferably, the second fixed shaft is a tubular body with a rectangular cross-section, the lower part of the second guiding slide bar is threaded and can move up and down through the second fixed shaft; the slider can slide up and down on the second guiding slide bar; the limit opening degree of the regulating valve plate is restricted by the position of the handwheel, and by rotating the handwheel, the limit opening degree of the valve can be adjusted arbitrarily within 90°.

[0013] Preferably, the fixing device includes anchor bolts, elastic gaskets and metal fixing plates. The anchor bolts press the elastic gaskets and metal fixing plates, and the metal fixing plates drive the installation flange to fix the regulating valve housing on the concrete wall platform.

[0014] Preferably, it simultaneously has the functions of air volume regulation and gravity check valve. The gravity check valve components and working principles of the first valve body and the second valve body are the same, and the gravity check valve function is realized by using the gravity of the slider and the valve plate itself, while the air volume regulation components and principles are different, and are realized by adjusting the limit screw or rotating the handwheel.

[0015] Preferably, the ventilation device can be made into a single-leaf or multi-leaf air valve, and the number of internal valve bodies can be flexibly adjusted according to engineering needs.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. The ventilation device should simultaneously have the functions of air volume regulation and gravity check valve. The gravity check valve components and working principles of the first valve body and the second valve body are the same, and the gravity check valve function is realized by using the gravity of the slider and the valve plate itself, while the air volume regulation components and principles are different, and are realized by adjusting the limit screw or rotating the handwheel. In addition, the ventilation device can be made into a single-leaf or multi-leaf air valve, and the number of internal valve bodies can be flexibly adjusted according to engineering needs.

[0018] 2. Remove the air supply grid on the upper part of the device, and then the position of the limit screw can be adjusted or the handwheel can be rotated for adjustment. The air volume of the air supply grid can be adjusted on the ground, and the gravity check valve function can prevent air from flowing back, improving the operation efficiency of the air supply system, optimizing the air supply effect, and solving the problems of difficult installation and adjustment of the ground air supply system. Description of the Drawings

[0019] Figure 1 is the installation schematic diagram of the ventilation device of the present utility model (the first valve body).

[0020] Figure 2 It is a top view of the structure of the ventilation device of the present utility model (the first valve body).

[0021] Figure 3 It is a detailed view of the first valve body of the ventilation device of the present utility model.

[0022] Figure 4 It is an installation schematic diagram of the ventilation device of the present utility model (the second valve body).

[0023] Figure 5 It is a top view of the structure of the ventilation device of the present utility model (the second valve body).

[0024] Figure 6 It is a detailed view of the second valve body of the ventilation device of the present utility model.

[0025] Figure 7 It is a three - dimensional view of the first valve body of the ventilation device of the present utility model.

[0026] Figure 8 It is a three - dimensional view of the second valve body of the ventilation device of the present utility model.

[0027] In the figure: 11 limit screw, 12 first guiding slide bar, 13 first fixed shaft, 14 limit screw hole, 15 slider, 16 connecting rod, 17 regulating valve plate, 18 rotating shaft, 21 handwheel, 22 second guiding slide bar, 23 second fixed shaft, 24 nut, 31 regulating valve housing, 32 mounting flange, 33 fixing device, 34 anchor bolt, 35 elastic gasket, 36 metal fixing plate, 37 concrete wall platform. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0029] Refer to Figures 1 - 8 , a ventilation device of a wind valve with a gravity check function:

[0030] The device consists of a valve body assembly, a regulating valve housing 31, a mounting flange 32, and a fixing device 33. The present utility model provides two types of valve bodies according to different requirements: the first valve body uses a limit screw 11 to adjust the air volume, with three-stage adjustment; the second valve body uses a handwheel 21 to adjust the air volume, and the maximum opening angle of the valve plate can be adjusted arbitrarily within 90°, with higher adjustment ability. The gravity check members (numbered 15-18) of the first valve body and the second valve body are the same, while there are certain differences in the air volume adjustment members. The air volume adjustment members in the first valve body are numbered 11-14, and those in the second valve body are numbered 21-24. In the first valve body, a plurality of uniformly arranged first fixed shafts 13 are welded inside the regulating valve housing 31, a first guiding slide bar 12 is welded on the first fixed shaft 13, the regulating valve plate 17 is hinged to the first fixed shaft 13 through a rotating shaft 18 and is symmetrically arranged, a slider 15 is hinged to the regulating valve plate 17 through a connecting rod 16, and the limit screw 11 is connected to the first guiding slide bar 12 through a limit screw hole 14.

[0031] The second valve body includes a plurality of uniformly arranged second fixed shafts 23 welded inside the regulating valve housing 31, a nut 24 is welded to the second fixed shaft 23, the handwheel 21 is welded to the top of the second guiding slide bar 22, the second guiding slide bar 22 is threadedly connected to the second fixed shaft 23 through the nut 24, the regulating valve plate 17 is hinged to the second fixed shaft 23 through a rotating shaft 18 and is symmetrically arranged, and the device is nested and installed in a buried air duct through the fixing device 33.

[0032] See Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 The device is fixed on the concrete wall platform 37 through the mounting flange 32 and the fixing device 33. The fixing device 33 includes a foundation bolt 34, an elastic gasket 35, and a metal fixing plate 36. The foundation bolt 34 presses the elastic gasket 35 and the metal fixing plate 36, and the metal fixing plate 36 drives the mounting flange 32 to fix the device on the concrete wall platform 37.

[0033] See Figure 3 、 Figure 7 In the first valve body: the first fixed shaft 13 is a tubular body with a rectangular cross-section; the slider 15 can slide up and down on the first guiding slide bar 12; the limit opening of the regulating valve plate 17 is limited by the position of the limit screw 11, and the maximum opening is to open vertically upward. When the valve is closed, the regulating valve plate 17 is in a horizontal position; according to the engineering air supply requirements, the valve can be set with three different maximum air volumes, and three limit screw holes 14 are correspondingly set according to the air valve opening corresponding to the maximum air volume requirement.

[0034] See Figure 6 、 Figure 8, in the second valve body: the second fixed shaft 23 is a tubular body with a rectangular cross-section; the lower part of the second guiding slide bar 22 has threads and can move up and down through the second fixed shaft 23; the slider 15 can slide up and down on the second guiding slide bar 22; the limit opening of the regulating valve plate 17 is restricted by the position of the handwheel 21, and by rotating the handwheel, the limit opening of the valve can be arbitrarily adjusted within 90°.

[0035] This ventilation device should have both air volume adjustment and gravity check functions at the same time. The gravity check components and working principles of the first valve body and the second valve body are the same. The gravity check function is realized by using the gravity of the slider and the valve plate itself, while the air volume adjustment components and principles are different, and are realized by adjusting the limit screw or rotating the handwheel. In addition, this ventilation device can be made into a single-leaf or multi-leaf air valve, and the number of internal valve bodies can be flexibly adjusted according to engineering needs.

[0036] The working principle of the present utility model is as follows: The gravity check principle of the first valve body and the second valve body is that in the air supply state, under the action of the upward air flow, the regulating valve plate 17 opens upward, and air is sent into the room; when the air supply stops, due to the gravity of the slider 15 and the regulating valve plate 17 itself, the regulating valve plate 17 falls to the horizontal state, and the valve closes, realizing the gravity check function; The air volume adjustment principle of the first valve body is that in the air supply state, the limit screw 11 can block the movement of the slider 15, and then affect the opening of the regulating valve plate 17 through the connecting rod 16. The position of the limit screw 11 can be switched to adjust the limit opening of the valve and regulate the maximum air volume of the air supply port; The air volume adjustment principle of the second valve body is that in the air supply state, the air flow acts on the regulating valve plate 17 to make the slider 15 move upward, the handwheel 21 can block the movement of the slider 15, rotate the handwheel 21, and the second guiding slide bar 22 and the handwheel 21 move upward (downward) relative to the second fixed shaft 23, and the limit opening of the regulating valve plate 17 is increased (decreased) through the connecting rod 16. Therefore, the second valve body can arbitrarily adjust the limit opening of the regulating valve plate 17 within 90° to regulate the maximum air volume of the air supply port.

[0037] The present utility model is applied to the ground air supply system in the room to maintain the freshness of the air in the area where people are active. The present utility model has the following beneficial effects: flexible application, and the limit screw adjustment or handwheel adjustment can be selected according to engineering needs; it can be fabricated on site and customized according to the size of the buried air duct; gravity check can prevent air backflow without human intervention; easy to install, the regulating valve is nested and installed in the buried rectangular air duct under the ground air supply grille; easy to adjust, simple operation, and the installation and adjustment work can be carried out on the ground.

[0038] See Figure 1 、 Figure 2 、 Figure 3 , Figure 7, according to the working environment and working temperature of the first valve body of the present utility model, the materials of its various parts are as follows: the first fixed shaft 13 and the regulating valve plate 17 are made of cold-rolled or hot-dip galvanized steel plates; the slider 15 and the connecting rod 16 are made of low-carbon steel; the limit screw 11, the first guiding slide bar 12, and the rotating shaft 18 are made of Q235 low-carbon steel.

[0039] See Figure 4 , Figure 5 , Figure 6 , Figure 8 , according to the working environment and working temperature of the second valve body of the present utility model, the materials of its various parts are as follows: the second fixed shaft 23 is made of cold-rolled or hot-dip galvanized steel plate; the handwheel 21 is made of low-carbon steel; the second guiding slide bar 22 and the nut 24 are made of Q235 low-carbon steel.

[0040] See Figure 1 , Figure 5 , according to the working environment and working temperature of the present utility model, the materials of the housing and the mounting components are as follows: the regulating valve housing 31, the mounting flange 32, the elastic gasket 35, and the metal fixing plate 36 are made of cold-rolled or hot-dip galvanized steel plates; the anchor bolts 34 are made of Q235 low-carbon steel.

[0041] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A ventilation device with a gravity check valve function air valve, comprising a regulating valve housing (31) and a plurality of first fixed shafts (13), wherein the plurality of uniformly arranged first fixed shafts (13) are welded to the inner side of the regulating valve housing (31), and it is characterized in that: Valve body assembly, the valve body assembly includes a first valve body, the first valve body includes a first guiding slide rod (12) welded to a first fixed shaft (13), on both sides of the first fixed shaft (13) there are installed regulating valve plates (17), on the regulating valve plates (17) there are installed sliders (15), on the first guiding slide rod (12) there are provided limit screw holes (14), and in the limit screw holes (14) there are installed limit screws (11).

2. The ventilation device of a wind valve with gravity check function according to claim 1, characterized in that The regulating valve plates (17) are hinged to the first fixed shaft (13) through a rotating shaft (18) and are symmetrically arranged.

3. The ventilation device of a wind valve with a gravity check function according to claim 1, characterized in that, The sliders (15) are hinged to the regulating valve plates (17) through connecting rods (16).

4. The ventilation device of a wind valve with a gravity check function according to claim 1, characterized in that, The valve body assembly includes a second valve body, the second valve body includes a regulating valve housing (31) and a plurality of second fixed shafts (23), the plurality of second fixed shafts (23) which are evenly arranged are welded to the inner side of the regulating valve housing (31), on the second fixed shafts (23) there are installed second guiding slide rods (22), at the upper end of the second guiding slide rods (22) there is fixed a handwheel (21), and the regulating valve plates (17) are hinged to the second fixed shafts (23) through a rotating shaft (18) and are symmetrically arranged.

5. The ventilation device of a wind valve with a gravity check function according to claim 4, characterized in that, The second guiding slide rods (22) are threadedly connected to the second fixed shafts (23) through nuts (24).

6. The ventilation device of a wind valve with a gravity check function according to claim 1, characterized in that, It further includes a concrete wall platform (37) cast by ground subsidence, and the regulating valve housing (31) is fixed on the concrete wall platform (37) through a mounting flange (32) and a fixing device (33).

7. The ventilation device of a wind valve with a gravity check function according to claim 1, characterized in that, The first fixed shaft (13) is a tubular body with a rectangular cross-section, and the sliders (15) can slide up and down on the first guiding slide rod (12); the limit opening of the regulating valve plates (17) is limited by the position of the limit screws (11), the maximum opening is to open vertically upward, and when the valve is closed, the regulating valve plates (17) are in a horizontal position.

8. The ventilation device of a wind valve with a gravity check function according to claim 4, characterized in that, The second fixed shafts (23) are tubular bodies with a rectangular cross-section, the lower parts of the second guiding slide rods (22) are threaded and can move up and down through the second fixed shafts (23); the sliders (15) can slide up and down on the second guiding slide rods (22); the limit opening of the regulating valve plates (17) is limited by the position of the handwheel (21), and by rotating the handwheel (21), the limit opening of the valve can be arbitrarily adjusted within (90)°.

9. The ventilation device of a wind valve with a gravity check function according to claim 6, characterized in that, The fixing device (33) includes anchor bolts (34), elastic gaskets (35) and metal fixing plates (36), the anchor bolts (34) press the elastic gaskets (35) and the metal fixing plates (36), and the metal fixing plates (36) drive the mounting flange (32) to fix the regulating valve housing (31) on the concrete wall platform (37).

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