CN220102094U - Square regulating valve for air supply in trench - Google Patents

Abstract

The utility model discloses a square regulating valve for trench air supply, which comprises a square shell body, wherein the square shell body is used for being nested and installed in an inner space of a square buried air pipe, a rectangular space is defined in the square shell body, a horizontally arranged driving shaft which is driven by a rotating hand wheel and is positioned below the rotating hand wheel is installed in the middle part of the rectangular space, driven shafts are oppositely arranged on two sides of the driving shaft in the radial direction, at least one air outlet is formed in the square shell body, a regulating valve plate is installed in the air outlet, the driving shaft and the driven shafts are respectively connected with one regulating valve plate, and each regulating valve plate is respectively connected with a corresponding connecting pull rod through a connecting rod. According to the utility model, the opening degree is adjusted by rotating the hand wheel, so that the adjusting valve plate can be locked at any angle within the range of 90 degrees, and the air quantity of each ground air supply opening can be effectively adjusted and controlled on the ground, thereby enabling the whole air supply system to operate efficiently.

Description

Square regulating valve for air supply in trench

Technical Field

The utility model relates to the technical field of a trench air supply regulating valve, in particular to a square regulating valve for trench air supply.

Background

The replacement ventilation is used for supplying air at a low speed at the lower part of a room, and the air flow slowly moves upwards in a state of a piston flow similar to a laminar flow, so that pollutants in the air of a workshop can be effectively controlled at the upper part of the workshop, and a fresh air lake is formed at the lower part of the workshop, namely the working area of an operator. The replacement ventilation mode has been put into practical use in new construction and modification projects, and good ventilation effects have been achieved.

The specific application form of the displacement ventilation varies from one case to another. The air supply of the trench and the air exhaust at the upper part are typical replacement ventilation modes, the air supply of the trench air supply system is sent to the room or the lower part of a workshop through the buried air pipe and the ground air supply opening, and as the main components of the ground air supply system are positioned under the ground, the air supply system is inconvenient to set up a regulating valve, so that the air flow organization is uneven, and the ventilation effect is poor.

Disclosure of Invention

The utility model aims at overcoming the technical defects in the prior art, and provides a square regulating valve for trench air supply, which is used in a trench mechanical air supply system, is nested and arranged in a buried local air pipe and below a ground air supply grid, and can realize effective control and regulation of the air quantity of the air supply grid; the air quantity adjusting device is simple to operate, the air quantity of each ground air supply opening can be effectively adjusted and controlled on the ground, the whole ground air supply system is enabled to operate efficiently, and the problem that the air quantity adjusting of the ground air supply system is difficult is solved.

The technical scheme adopted for realizing the purpose of the utility model is as follows:

the utility model provides a square governing valve is used in trench air supply, includes the square casing that is arranged in the embedding of square buries tuber pipe inner space of packing into, rectangular space is defined to square casing's inside, the middle part is equipped with by rotatory hand wheel driven be located the driving shaft that the level of rotatory hand wheel below was arranged in the rectangular space, the radial direction both sides of driving shaft relatively arranged has the driven shaft, square casing is inside to form at least one air exit, install the regulation valve plate in the air exit, driving shaft and driven shaft are connected at least one respectively the regulation valve plate, every the regulation valve plate is connected with the connecting rod that corresponds through a connecting rod respectively.

Preferably, the rotary hand wheel is in transmission connection with the driving shaft through a worm and gear transmission mechanism so as to drive the driving shaft to rotate.

Preferably, the wheel worm transmission mechanism is fixed on a fixed frame, the fixed frame is fixed in the middle of the inner side of the square shell, and the inside of the square shell is divided into two opposite air outlets.

Preferably, a mounting flange is arranged at the top of the square shell.

Preferably, the square shell is fixed on the concrete wall table around the ground hole by the fixing device through the mounting flange.

Preferably, the fixing device comprises an elastic metal fixing plate, an anchor bolt and a butterfly nut in threaded fit with the anchor bolt, the anchor bolt is fixed on a concrete wall table of a ground hole, the butterfly nut is threaded on the anchor bolt, one side of the elastic metal fixing plate is pressed above the concrete wall table of the ground hole, and the other side of the elastic metal fixing plate is pressed on the upper surface of the mounting flange of the square regulating valve, so that the square regulating valve is fixed.

Preferably, an elastic gasket is arranged between the metal fixing plate and the ground opening concrete wall table.

Preferably, one end of the connecting rod is hinged with a hinged connecting piece on the adjusting valve plate connected with the driving shaft/the driven shaft, and the other end of the connecting rod is hinged with the connecting pull rod.

Preferably, the two connecting pull rods are oppositely arranged at two sides of the rotary hand wheel, and one connecting pull rod is connected with the three connecting rods positioned at the same side.

Preferably, the axial direction of the connecting pull rod is perpendicular to the axial direction of the driving shaft/driven shaft.

According to the square regulating valve for the trench air supply, the square regulating valve is nested and arranged on the buried air pipe at the lower part of the ground air supply grid, the opening degree of the blade can be regulated by rotating the hand wheel after the air supply grid is taken down, the regulating valve plate can be locked at any angle within the range of 90 degrees, the air quantity of each ground air supply opening can be effectively regulated and controlled on the ground, the whole air supply system can be further operated efficiently, and the problems that the regulating valve of the trench air supply system is inconvenient to install, difficult to regulate and poor in operation effect are solved.

Drawings

Fig. 1 is a schematic diagram of an installation structure of a square adjusting valve for trench air supply according to an embodiment of the present utility model.

Fig. 2 is a plan view of a square adjusting valve for trench air supply according to an embodiment of the present utility model.

Fig. 3 is an a-direction view of fig. 2 in accordance with an embodiment of the present utility model.

Fig. 4 is a view from direction B of fig. 2 in accordance with an embodiment of the present utility model.

Fig. 5 is a schematic structural view of a fixing device of a square adjusting valve for trench air supply according to the practical embodiment.

Reference numerals illustrate:

1. the hydraulic valve comprises a rotary hand wheel, a turbine worm transmission mechanism, a fixed frame, a regulating valve plate, a connecting pull rod, a connecting rod, a driving shaft, a driven shaft, a square shell, a mounting flange, a fixing device, a metal fixing plate, an anchor bolt, a wing nut, a flexible gasket, a concrete wall platform and a hinged connecting piece.

Detailed Description

The utility model is described in further detail below with reference to the drawings and the specific examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1 to 5, the square adjusting valve for trench air supply is used for being arranged below an air supply grid assembled by a ground air supply opening, and comprises a square shell 9 which is used for being nested into an inner space of a square buried air pipe, wherein a rectangular space is defined in the square shell 9, a driving shaft 7 which is driven by a rotary hand wheel 1 and is arranged horizontally below the rotary hand wheel 1 is arranged in the middle of the rectangular space, driven shafts 8 are oppositely arranged on two sides of the driving shaft 7 in the radial direction, the driven shafts 8 are horizontally arranged equally, the axial directions of the driving shaft and the driven shafts are consistent with the length direction of the rectangular space, two opposite exhaust openings are formed on two sides of the rotary hand wheel 1, each exhaust opening is internally provided with an adjusting valve plate 4, the adjusting valve plate 4 is a plurality of like blades, the driving shaft 7 and the driven shaft 8 are respectively connected with at least one adjusting valve plate 4, and each adjusting valve plate 4 is respectively connected with a corresponding connecting rod 5 through a connecting rod 6.

The square regulating valve for the trench air supply can drive the driving shaft and the driven shaft to rotate by rotating the hand wheel after the air supply grille assembled at the upper part of the square regulating valve is taken down, and a plurality of regulating valve plates rotate along with the driving shaft and the driven shaft, so that the opening degree of the regulating valve plates is regulated, and the size of an air outlet is regulated.

It should be noted that, in the above embodiment, it is understood that the exhaust port may be one (for example, only one exhaust port is provided on one side of the rotary hand wheel 1), and the size of the exhaust port may be set according to practical situations.

In some embodiments, one end of the connecting rod 6 is hinged to a hinged connecting piece 17 on the adjusting valve plate connected with the driving shaft/driven shaft, and the other end of the connecting rod is matched with the connecting pull rod 5 through a rectangular groove and is hinged (see fig. 3), so that when the driving shaft rotates, two driven shafts are synchronously rotated, and thus a plurality of adjusting valve plates synchronously rotate to be opened or closed, the bottom end of the hinged connecting piece 17 is fixed on a rectangular connecting plate, the connecting plate is fixedly connected with the adjusting valve plate 4 through two screws, the hinged connecting piece 17 is symmetrically and oppositely attached and fixed by two Z-shaped plates, and then a U connecting port (see fig. 3) is formed, and one end of the connecting rod is hinged with the U connecting port through a shaft piece.

In some embodiments, as shown in fig. 2, two connecting rods 5 are oppositely arranged at two sides of the rotary hand wheel 1, one connecting rod 5 is connected with three connecting rods 6 located at the same side, preferably, the connecting rod 5 is located at the middle part of the air outlet where the connecting rod 6 is located, in some embodiments, the axial direction of the connecting rod 5 is perpendicular to the axial direction of the driving shaft/driven shaft.

In some embodiments, the rotary hand wheel 1 is in transmission connection with the driving shaft 7 through the worm and gear transmission mechanism 2, so as to drive the driving shaft 7 to rotate, thereby driving the adjusting valve plate to rotate and realizing the opening degree of the adjusting valve, the worm and gear transmission mechanism 2 is in the prior art, the structure of the worm and gear transmission mechanism 2 is not shown and described any more, and the worm and gear transmission mechanism 2 is respectively connected with the rotary hand wheel 1 and the driving shaft 7.

As an embodiment, the driving shaft 7 is one, and is disposed in one exhaust port, as shown in fig. 2, the left exhaust port may be disposed coaxially with one driven shaft of another exhaust port, the driven shafts 8 are three, and disposed on two sides of the driving shaft 7 in the radial direction, the two driven shafts 8 are the same in length and are long shafts, and penetrate through the two exhaust ports, two adjusting valve plates 4 are mounted on the two driven shafts, two adjusting valve plates 4 mounted on the two adjusting valve plates are respectively located in the two exhaust ports, one driven shaft 8 is a short shaft, and is located in the exhaust port on the right side shown in fig. 2, and the adjusting valve plates 4 are six, and each exhaust port is provided with two three adjusting valve plates 4.

In some embodiments, the wheel worm driving mechanism 2 is fixed on the fixed frame 3, the fixed frame 3 is fixed in the middle of the inner side of the square casing 9, and the inner rectangular space of the square casing is divided into two opposite air outlets at the upper part, preferably, the two air outlets are identical in size or not identical in size. Specifically, the two ends of the fixed frame 3 are fixedly connected with the inner wall of the square casing, as shown in fig. 2, the fixed frame 3 is a rectangular frame, the upper part inside the square casing is equally divided into two spaces to form two air outlets to form a 'sun' shaped structure, wherein the length direction of the adjusting valve plate 4 is consistent with the length direction of the square casing, the adjusting valve plate can rotate within a range of 0-90 degrees to realize the opening degree of the air outlet adjustment, the valve plate is in an all-open state as shown in fig. 2, the adjusting valve plates are vertically opened, and each adjusting valve plate 4 is a rectangular plate.

In some embodiments, the top of the square casing 9 is provided with a mounting flange 10, which is disposed around the top of the square casing and is vertically connected with the square casing, so as to facilitate the installation of the square casing, and the square casing is embedded into the square buried air pipe by the mounting flange 10 without forming a notch at the four corners, and the square casing 9 can be clamped around the external ground opening by means of the mounting flange 10, for example, the square casing 9 is fixed on the concrete wall table 16 around the ground opening by means of the mounting flange 10 and fixing devices 11 disposed at the four corners, so that the square regulating valve for trench air supply is installed in the internal space of the square buried air pipe, and the fixing devices are preferably disposed at the four corners of the mounting flange 10, as shown in fig. 2.

In some embodiments, the fixing device 11 of each corner includes an elastic metal fixing plate 12, an anchor bolt 13, and a wing nut 14 in threaded engagement with the anchor bolt, where the anchor bolt 13 is fixed on a ground hole concrete wall platform 16, the wing nut 14 is screwed on the anchor bolt 13, one side of the elastic metal fixing plate 12 is pressed above the ground hole concrete wall platform 16, and the other side of the elastic metal fixing plate 12 is pressed on the upper surface of the mounting flange 10 of the square regulating valve, so that the square regulating valve is fixed, the elastic metal plate fixing is implemented by using a thin metal plate, preferably, two elastic metal fixing plates 12 are arranged at positions of each corner, which are perpendicular to each other and overlap, and respectively press two perpendicular flange plates of the mounting flange 10, as shown in fig. 2. In some embodiments, an elastic pad 15 is disposed between the elastic metal fixing plate 12 and the ground opening concrete wall platform 16, and the elastic metal fixing plate 12 may be prefabricated into a Z-shaped structure according to needs, as shown in fig. 5.

In some embodiments, the top of the fixed frame 3 is lower than the top surface of the square casing 9, as shown in fig. 4, the connecting rod may be a plate-shaped body, the connecting rod is formed by connecting plates, and the connecting rod are hinged by a connecting pin or a shaft member. Each adjusting valve plate 4 is fixedly connected with a driving shaft/driven shaft through two connecting plates and eight screws, one driving shaft/driven shaft is clamped in the adjusting valve plates 4 and the two connecting plates through screws, as shown in fig. 3, two ends of each driving shaft/driven shaft or connecting positions of each driving shaft/driven shaft and a fixed frame and a square shell are provided with rotary supporting mechanisms, such as bearings, and each rotary supporting mechanism connected with each driving shaft/driven shaft is respectively fixedly connected with the inner wall of the square shell and two opposite side walls of the fixed frame, as shown in fig. 3.

In some embodiments, according to the working environment and working temperature of the utility model, the fixed frame 3, the adjusting valve plate 4, the square shell 9 and the mounting flange 10 are made of cold-rolled or hot-galvanized steel plates; the rotary hand wheel 1, the connecting pull rod 5 and the connecting rod 6 are made of low carbon steel; the driving shaft 6 and the driven shaft 7 are made of Q235 low carbon steel, the elastic metal fixing plate 12 and the elastic gasket 15 are made of cold-rolled or hot-galvanized steel plates, and the anchor bolts 13 and the wing nuts 14 are made of Q235 low carbon steel.

The working principle of the utility model is as follows:

the rotary hand wheel 1 drives the driving shaft 7 to rotate through the worm and gear transmission mechanism 2, the driving shaft 7 drives the driven shaft 8 to rotate through a structure of connecting the pull rod 5 and the pull rod 6, the plurality of adjusting valve plates 4 rotate along with the driving shaft 7 and the driven shaft 8, further the opening degree adjustment of the plurality of adjusting valve plates 4 is realized, and the air quantity of each ground air supply opening can be effectively adjusted and controlled on the ground.

The square regulating valve for the air supply of the trench is quick to manufacture and can be customized according to the size of the buried air pipe; the installation is convenient, the regulating valve is nested and arranged in the buried air pipe at the lower part of the ground air supply grid, so that the problem of inconvenient installation of the traditional regulating valve of the trench air supply system is solved; in addition, the operation is simple, the opening degree of the valve plate can be adjusted by rotating the hand wheel after the air supply grille is taken down, and the air quantity of each ground air supply opening can be effectively adjusted and controlled on the ground.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof;

the present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (10)

1. The square regulating valve for the trench air supply is characterized by comprising a square shell body which is used for being nested and installed in an inner space of a square buried air pipe, wherein a rectangular space is defined in the square shell body, a horizontally arranged driving shaft which is driven by a rotating hand wheel and is positioned below the rotating hand wheel is installed in the rectangular space, driven shafts are oppositely arranged on two sides of the driving shaft in the radial direction, at least one air outlet is formed in the square shell body, a regulating valve plate is installed in the air outlet, the driving shaft and the driven shafts are respectively connected with at least one regulating valve plate, and each regulating valve plate is respectively connected with a corresponding connecting pull rod through a connecting rod.

2. The square regulating valve for trench air supply according to claim 1, wherein the rotary hand wheel is in transmission connection with a driving shaft through a worm gear transmission mechanism so as to drive the driving shaft to rotate.

3. The square regulating valve for trench air supply according to claim 2, wherein the wheel worm transmission mechanism is fixed on a fixed frame, the fixed frame is fixed at the middle part of the inner side of the square shell, and two opposite air outlets are formed in the inner part of the square shell.

4. The square regulating valve for trench air supply according to claim 1, wherein a mounting flange is provided at the top of the square housing.

5. The square adjusting valve for the air supply of the trench according to claim 4, wherein the square shell is fixed on a concrete wall table around the ground opening by the fixing device through the mounting flange.

6. The square adjusting valve for air supply in a trench according to claim 5, wherein the fixing device comprises an elastic metal fixing plate, an anchor bolt and a butterfly nut in threaded fit with the anchor bolt, the anchor bolt is fixed on a ground opening concrete wall table, the butterfly nut is screwed on the anchor bolt, one side of the elastic metal fixing plate is pressed above the ground opening concrete wall table, and the other side of the elastic metal fixing plate is pressed on the upper surface of the mounting flange of the square adjusting valve, so that the square adjusting valve is fixed.

7. The square adjusting valve for trench air supply according to claim 6, wherein an elastic gasket is arranged between the metal fixing plate and the ground opening concrete wall table.

8. The square adjusting valve for the air supply of the trench according to claim 1, wherein one end of the connecting rod is hinged with a hinged connecting piece on an adjusting valve plate connected with the driving shaft/the driven shaft, and the other end of the connecting rod is hinged with the connecting pull rod.

9. The square regulating valve for trench air supply according to claim 1, wherein two connecting pull rods are oppositely arranged at two sides of the rotary hand wheel, and one connecting pull rod is connected with three connecting rods positioned at the same side.

10. The square-shaped regulating valve for trench air supply according to claim 1, wherein the axial direction of the connecting rod is perpendicular to the axial direction of the driving shaft/driven shaft.