Pneumatic diverter valve for sewage plant

Abstract

The utility model discloses a pneumatic diverter valve for a sewage plant, which comprises a pneumatic actuator, a pneumatic connecting rod, a rotating shaft, a first connecting rod, a second connecting rod, a push rod, a plurality of diverter valve frames and door bodies, and the plurality of door bodies are respectively arranged on the plurality of diverter valve frames in a turnover manner; the pneumatic actuator is mounted on a wall body, and the telescopic end of the pneumatic actuator is connected with the upper end of the pneumatic connecting rod; a bearing support is arranged on the front wall of the rear side of the diverter valve, and the rotating shaft is rotatably arranged on the bearing support; a sliding groove is formed in one end of the first connecting rod, a pin shaft at the lower end of the pneumatic connecting rod is assembled in the sliding groove, and the other end of the first connecting rod is fixed to the rotating shaft. One end of each second connecting rod is fixed to the rotating shaft, the other end of each second connecting rod is hinged to one push rod, and the end, away from the corresponding second connecting rod, of each push rod is hinged to the door body, so that one pneumatic actuator controls opening and closing of the multiple flow dividing valves at the same time, the mounting number of the pneumatic actuators is reduced, and the construction difficulty of the whole mounting process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a pneumatic diverter valve for sewage treatment plants. Background Art

[0002] In sewage treatment plants, activated carbon filters are an important treatment unit, mainly used to remove organic pollutants, odors, and colors in water. Activated carbon is widely used in the field of water treatment due to its large specific surface area and good adsorption performance. The pneumatic diverter valve is a special equipment among the activated carbon filters in sewage treatment plants and plays an important role in the activated carbon filter system.

[0003] Due to process requirements, the activated carbon filters in existing sewage treatment plants need to be open at the top, and large platforms are not allowed to be built above them, which increases the construction difficulty above them. The pneumatic diverter valve is controlled by a pneumatic actuator to open and close. Currently, one pneumatic actuator is used to control one diverter valve. On the one hand, this requires setting more pneumatic actuators above the filter, which further increases the construction difficulty during the installation process; on the other hand, since each pneumatic actuator is independently controlled and one pneumatic actuator controls one diverter valve, it is very difficult to achieve synchronous opening between the diverter valves. Such asynchronous operation may lead to problems such as uneven water flow distribution, affecting the operation efficiency of the entire system and the treatment effect of the activated carbon filter. Therefore, finding a solution that can meet process requirements and simplify installation and improve control synchronization has become an urgent problem to be solved. Summary of the Utility Model

[0004] In view of the existing situation where one pneumatic actuator controls one diverter valve, which increases the construction difficulty during the installation process on the one hand and makes it difficult to achieve synchronous opening between the diverter valves on the other hand, the utility model provides a pneumatic diverter valve for sewage treatment plants. The utility model is provided with multiple diverter valve frames and door bodies. The multiple door bodies are respectively rotatably installed on the multiple diverter valve frames to form multiple diverter valves. A push rod is connected to each door body. The rotation of the rotating shaft can be controlled by one pneumatic actuator, and then the multiple push rods are controlled to push the multiple door bodies to open and close, that is, one pneumatic actuator can control the opening and closing of multiple diverter valves at the same time. In addition, the installation quantity of the pneumatic actuator is reduced, thereby reducing the construction difficulty of the entire installation process.

[0005] The technical solution adopted by the utility model is:

[0006] A pneumatic diverter valve for sewage treatment plants, comprising a pneumatic actuator, a pneumatic connecting rod, a rotating shaft, a first connecting rod, a second connecting rod, a push rod, multiple diverter valve frames and door bodies. The multiple door bodies are respectively rotatably installed on the multiple diverter valve frames to form multiple diverter valves;

[0007] The pneumatic actuator is installed on the wall above the rear side of the flow dividing valve. The telescopic end of the pneumatic actuator is connected to the upper end of the pneumatic connecting rod, and a pin shaft is installed at the lower end of the pneumatic connecting rod.

[0008] A bearing support is provided on the front wall at the rear side of the flow dividing valve, and the rotating shaft is rotatably installed on the bearing support.

[0009] One end of the first connecting rod is provided with a chute extending along its axial direction, and the pin shaft at the lower end of the pneumatic connecting rod is assembled in the chute. The other end of the first connecting rod is fixed on the rotating shaft.

[0010] One ends of a plurality of second connecting rods are fixed on the rotating shaft and are arranged corresponding to the positions of a plurality of flow dividing valves. The other ends are respectively hinged to a push rod, and the end of the push rod far from the second connecting rod is hinged to the door body.

[0011] Furthermore, trunnions hinged to the door body are provided on the flow dividing valve frame.

[0012] Furthermore, a circle of water stop rubber is provided between the door body and the flow dividing valve frame, and the water stop rubber is installed on the door body or the flow dividing valve frame.

[0013] Furthermore, two flow dividing valves are provided. Two push rods are connected to the door body of each flow dividing valve, and the pneumatic actuator is located at the middle position above the rear sides of the two flow dividing valves.

[0014] Furthermore, the number of bearing supports is multiple and they are evenly distributed in the length direction of the rotating shaft.

[0015] Furthermore, under the push of the push rod, the door body can rotate 0 to 90° for opening and closing.

[0016] Furthermore, the pneumatic actuator is installed on the wall through a flange; adjusting bolts are provided between the flange and the wall.

[0017] Furthermore, the pneumatic connecting rod is vertically fixed on the telescopic end of the pneumatic actuator.

[0018] Furthermore, self-lubricating bushings are sleeved on the outer circles of the pin shafts at the connection between the pneumatic connecting rod and the first connecting rod and at the connection between the second connecting rod and the push rod.

[0019] Furthermore, a hanging plate is provided at the top of the flow dividing valve frame; a hanging ear is provided on one side of the door body close to the push rod, and the push rod and the hanging ear are connected through a hinge.

[0020] The beneficial effects of the present utility model are:

[0021] The utility model is provided with a plurality of shunt valve frames and door bodies. The plurality of door bodies are respectively rotatably installed on the plurality of shunt valve frames, thus forming a plurality of shunt valves. A push rod is connected to each door body, and the other end of each push rod is hinged to a second connecting rod. A pneumatic actuator can be used to control the rotation of a rotating shaft, and further control the plurality of push rods to push the plurality of door bodies to open and close, that is, to realize the opening and closing of a plurality of shunt valves controlled by one pneumatic actuator. In addition, the installation quantity of the pneumatic actuator is reduced, and thus the construction difficulty of the whole installation process is reduced.

[0022] In the utility model, under the push of the push rod, the door body can rotate 0-90° to open and close. In the utility model, a circle of water-stop rubber is arranged between the door body and the shunt valve frame, ensuring the sealing performance between the door body and the shunt valve frame when the door body is closed, and avoiding water leakage. In the utility model, pin shafts are arranged at the connection between the pneumatic connecting rod and the first connecting rod and at the connection between the second connecting rod and the push rod, and self-lubricating bushings are sleeved outside the pin shafts, reducing the friction force when relative movement occurs between parts, reducing the wear of corresponding parts, and prolonging the service life. Description of the Drawings

[0023] Figure 1 It is the front view of the pneumatic shunt valve for sewage treatment plants of the utility model, and the front view is expressed in a sectional form.

[0024] Figure 2 It is the top view of the pneumatic shunt valve for sewage treatment plants of the utility model, and the top view is expressed in a sectional form.

[0025] Figure 3 For the utility model Figure 1 The enlarged schematic view at position A.

[0026] Figure 4 It is the position schematic diagram of the water-stop rubber and the door body in the pneumatic shunt valve for sewage treatment plants of the utility model.

[0027] In the figure, 1. pneumatic actuator; 2. flange; 3. adjusting bolt; 4. pneumatic connecting rod; 51. rotating shaft; 52. first connecting rod; 521. sliding groove; 53. second connecting rod; 6. bearing support; 8. push rod; 9. shunt valve frame; 10. water-stop rubber; 11. door body; 12. trunnion; 13. wall body. Specific Embodiments

[0028] The following further describes the utility model in detail in conjunction with the specific embodiments of the drawings, but the protection scope of the utility model is not limited thereto.

[0029] Figures 1-2This is a specific embodiment of the pneumatic diverter valve for sewage treatment plants described in the present utility model. The pneumatic diverter valve includes a pneumatic actuator 1, a pneumatic connecting rod 4, a rotating shaft 51, a first connecting rod 52, a second connecting rod 53, a push rod 8, a plurality of diverter valve frames 9 and valve bodies 11. The plurality of valve bodies 11 are respectively rotatably installed on the plurality of diverter valve frames 9 to form a plurality of diverter valves. The pneumatic actuator 1 is installed on the wall 13 above the rear side of the diverter valve. The telescopic end of the pneumatic actuator 1 is connected to the upper end of the pneumatic connecting rod 4. A pin shaft is installed at the lower end of the pneumatic connecting rod 4. When the pneumatic actuator 1 works, its telescopic end makes a telescopic movement, and thus can drive the pneumatic connecting rod 4 to make a reciprocating movement. The pneumatic actuator 1 is installed on the wall 13 through a flange 2, and adjusting bolts 3 are provided between the flange 2 and the wall 13. During installation, first install the flange connected to the pneumatic actuator 1 on the wall 13 through the adjusting bolts 3, and then level it on site through the adjusting bolts 3 to make the pneumatic actuator 1 in a vertical state. At this time, it can also be fixed by secondary grouting to ensure that the pneumatic actuator 1 is perpendicular to the horizontal plane. The pneumatic connecting rod 4 is vertically fixed on the telescopic end of the pneumatic actuator 1. In this way, the pneumatic connecting rod 4 can move vertically upward or vertically downward.

[0030] A bearing support 6 is provided on the front wall at the rear side of the diverter valve. The rotating shaft 51 is rotatably installed in the bearing support 6. The number of bearing supports 6 is multiple and they are evenly distributed in the length direction of the rotating shaft 51. In this embodiment, three bearing supports 6 are provided, two of which are located at both ends of the rotating shaft 51 and the other is located in the middle of the rotating shaft 51. The rotating shaft 51 passes through these three bearing supports 6 in sequence and can rotate under the action of the bearings in the bearing supports 6.

[0031] One end of the first connecting rod 52 is provided with a chute 521 extending along its axial direction. The pin shaft at the lower end of the pneumatic connecting rod 4 is assembled in the chute 521. The other end of the first connecting rod 52 is fixed on the rotating shaft 51. Since the first connecting rod 52 is fixed to the rotating shaft 51 and the rotating shaft 51 can rotate, and at the same time the connection point between the pneumatic connecting rod 4 and the first connecting rod 52 can slide in the chute 521, when the pneumatic connecting rod 4 moves vertically upward or vertically downward, it will drive the first connecting rod 52 to rotate around the axis of the rotating shaft 51, and then drive the rotating shaft 51 to rotate together. Self-lubricating bushings are sleeved on the outer circles of the pin shafts at the connection between the pneumatic connecting rod 4 and the first connecting rod 52 and at the connection between the second connecting rod 53 and the push rod 8. Specifically, the pin shaft passes through the chute 521 and is connected to the first connecting rod 52 at both ends. A self-lubricating bushing is sleeved on the outer circle of the pin shaft, and the self-lubricating bushing also passes through the chute 521 to reduce the friction when the pneumatic connecting rod 4 and the first connecting rod 52 have relative sliding and relative rotation, reduce the wear between the two, and extend the service life.

[0032] One end of each of the multiple second linkages 53 is fixed to the rotating shaft 51 and is arranged corresponding to the positions of the multiple flow dividing valves, and the other ends are respectively hinged to a push rod 8. One end of the push rod 8 away from the second linkage 53 is hinged to the door body 11. Each door body 11 is connected with a push rod 8, and the other end of each push rod 8 is hinged with a second linkage 53. In this way, when the rotating shaft 51 rotates, it will drive the second linkage 53 to rotate around the axis of the rotating shaft 51; relative rotation can occur between the second linkage 53 and the push rod 8, and the push rod 8 is connected with the door body 11. Furthermore, the rotating second linkage 53 will drive the push rod 8 to move, and then drive the door body 11 to move. Since the door body 11 is installed on the wall body 13 through a rotating connection, when the door body 11 moves, it rotates around the rotating connection point between the door body 11 and the wall body 13. The rotation of the door body 11 realizes the rotary opening and closing of the door body 11. After testing, in this embodiment, under the push of the push rod 8, the door body 11 can perform rotary opening and closing of 0 to 90°. Each door body 11 is connected with a push rod 8. In this way, when several push rods 8 are provided, the opening and closing movements of multiple door bodies 11 can be controlled simultaneously, that is, the opening and closing of multiple door bodies 11 are realized by one pneumatic actuator 1. On the one hand, the synchronous opening and closing of multiple door bodies 11 are realized, that is, the synchronous opening and closing of multiple flow dividing valves are realized. On the other hand, the number of pneumatic actuators 1 is reduced, and thus the structure above the filter tank can be adapted. In this embodiment, two door bodies 11 are provided, and each door body 11 is connected with two push rods 8; the push rods 8 on the two door bodies 11 are respectively located on both sides of the pneumatic actuator 1. That is, two second linkages 53 and push rods 8 control the rotary opening and closing of one door body 11. By providing two sets of second linkages 53 and push rods 8, the rotary opening and closing of two door bodies 11 can be controlled simultaneously, that is, the opening and closing of two flow dividing valves are realized by one pneumatic actuator 1. A pin shaft is arranged at the connection between the second linkage 53 and the push rod 8, and a self-lubricating bushing is sleeved outside the pin shaft. In this way, when relative rotation occurs between the second linkage 53 and the push rod 8, the friction between the two can be reduced, and thus the wear between the two is reduced, and the service life is prolonged. A lifting lug is arranged on one side of the door body 11 close to the push rod 8, and the push rod 8 and the lifting lug are connected through a hinge, thereby realizing the hinge between the push rod 8 and the door body 11, that is, relative rotation can occur between the push rod 8 and the door body 11 to facilitate the rotary opening and closing of the door body 11.

[0033] As Figure 3 shown, a flow dividing valve frame 9 is fixed at the position on the wall body 13 where the door body 11 is installed. Several groups of supports can be welded at the upper and lower parts of the flow dividing valve frame 9, and then the flow dividing valve frame 9 is fixed to the wall body 13 by bolts. The flow dividing valve frame 9 is provided with trunnions 12 hinged to the door body 11, and 2 to 3 groups of trunnions 12 can be provided so that the door body 11 can rotate around the trunnions 12. A circle of water stop rubber 10 is arranged between the door body 11 and the flow dividing valve frame 9. The water stop rubber 10 is installed on the door body 11 or the flow dividing valve frame 9 to ensure the sealing performance between the door body 11 and the flow dividing valve frame 9 when the door body 11 is closed. AsFigure 4 As shown, in this embodiment, a water stop rubber 10 is provided around the back water surface of the door body 11, and the water stop rubber 10 is fixed on the door body 11 by a plurality of bolts. A hanging plate is provided at the top of the shunt valve frame 9 for convenient installation.

[0034] The described example is a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment. Without departing from the essential content of the present invention, any obvious improvement, replacement or modification that those skilled in the art can make belongs to the protection scope of the present invention.

Claims

1. A pneumatic diverter valve for a sewage treatment plant, characterized in that: It comprises a pneumatic actuator (1), a pneumatic connecting rod (4), a rotating shaft (51), a first connecting rod (52), a second connecting rod (53), a push rod (8), a plurality of diverter valve frames (9) and a door body (11), wherein the plurality of door bodies (11) are respectively mounted on the plurality of diverter valve frames (9) in a flippable manner to form a plurality of diverter valves; The pneumatic actuator (1) is mounted on the wall (13) above the rear side of the diverter valve, the telescopic end of the pneumatic actuator (1) is connected to the upper end of the pneumatic connecting rod (4), and the lower end of the pneumatic connecting rod (4) is provided with a pin shaft; A bearing support (6) is provided on the front wall at the rear side of the diverter valve, and a rotating shaft (51) is rotatably mounted on the bearing support (6); One end of the first connecting rod (52) is provided with a slide groove (521) extending along its axial direction, the pin shaft at the lower end of the pneumatic connecting rod (4) is assembled in the slide groove (521), and the other end of the first connecting rod (52) is fixed on the rotating shaft (51); One end of the plurality of second connecting rods (53) is fixed on the rotating shaft (51) and is arranged corresponding to the positions of the plurality of diverter valves, and the other end is respectively hinged to a push rod (8), and the end of the push rod (8) away from the second connecting rod (53) is hinged to the door body (11).

2. The pneumatic diverter valve for sewage treatment plant according to claim 1 is characterized in that: The diverter valve frame (9) is provided with an ear shaft (12) hinged to the door body (11).

3. The pneumatic diverter valve for sewage treatment plant according to claim 1 is characterized in that: A circle of water-stop rubber (10) is arranged between the door body (11) and the diverter valve frame (9), and the water-stop rubber (10) is installed on the door body (11) or the diverter valve frame (9).

4. The pneumatic diverter valve for sewage treatment plant according to claim 1 is characterized in that: Two diverter valves are provided, and two push rods (8) are connected to the door body (11) of each diverter valve, and the pneumatic actuator (1) is located in the middle position above the rear side of the two diverter valves.

5. The pneumatic diverter valve for sewage treatment plant according to claim 1 is characterized in that: The bearing supports (6) are multiple in number and are evenly distributed in the length direction of the rotating shaft (51).

6. The pneumatic diverter valve for sewage treatment plant according to claim 1 is characterized in that: Under the push of the push rod (8), the door body (11) can be opened and closed by rotating 0 to 90 degrees.

7. The pneumatic diverter valve for sewage treatment plant according to claim 1 is characterized in that: The pneumatic actuator (1) is installed on the wall (13) via a flange (2); an adjusting bolt (3) is provided between the flange (2) and the wall (13).

8. The pneumatic diverter valve for sewage treatment plant according to claim 1 is characterized by: The pneumatic connecting rod (4) is vertically fixed on the telescopic end of the pneumatic actuator (1).

9. The pneumatic diverter valve for sewage treatment plant according to claim 1, characterized in that: The outer rings of the pin shafts at the connection between the pneumatic connecting rod (4) and the first connecting rod (52) and at the connection between the second connecting rod (53) and the push rod (8) are both sleeved with self-lubricating sleeves.

10. The pneumatic diverter valve for sewage treatment plant according to claim 1, characterized in that: A hanging plate is provided on the top of the diverter valve frame (9); a hanging ear is provided on one side of the door body (11) close to the push rod (8), and the push rod (8) and the hanging ear are connected by a hinge.

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