Dissolved oxygen automatic control valve for sewage aeration

Abstract

The utility model discloses an automatic dissolved oxygen control valve for sewage aeration, which belongs to the field of valve devices and comprises a shell, an electric actuator, a dissolved oxygen sensor, a controller and a valve component, the electric actuator and the dissolved oxygen sensor are respectively electrically connected with the controller, the valve component is arranged in the shell, and a via hole is formed in the shell; the valve component comprises a sector gear, a gear cover, a sliding piece and a guide rail disc. The oxygen content in water is detected through the arranged dissolved oxygen sensor, when it is detected that the oxygen content is not matched with the current sewage treatment condition, the controller controls the electric actuator to act, and then the electric actuator controls the sliding piece to be opened and closed by controlling the fan-shaped teeth. The opening and closing degree of the sliding piece is fast and convenient to adjust, the opening and closing degree adjusting fineness is high, the opening size of the valve can be flexibly adjusted according to the actual application requirement so as to meet the sewage aeration requirement, and the sewage treatment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve device field more specifically, relate to a kind of for sewage aeration dissolved oxygen automatic control valve. BACKGROUND

[0002] Sewage aeration is an important technical means in the process of wastewater treatment, mainly used for forcedly into air to sewage, make pool in sewage and air fully contact oxygenation, and agitate liquid, accelerate the transfer of oxygen in air to liquid, prevent pool in suspended matter sinking, strengthen the contact of organic matter in pool with microorganism and dissolved oxygen, so that organic matter in sewage is oxidized and decomposed.

[0003] In the process of sewage aeration, the oxygen content in sewage affects the aeration effect, if the dissolved oxygen is insufficient, new air needs to be supplemented in time to improve the dissolved oxygen content. In the prior art, the valve of the ventilation pipeline is usually a traditional sheet valve, and the opening degree is not linear, and cannot be finely adjusted according to the actual situation. UTILITY MODEL CONTENT

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to provide a dissolved oxygen automatic control valve for sewage aeration, which can flexibly adjust the opening degree of the valve according to the oxygen dissolution amount, and realize the best ventilation effect.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a kind of dissolved oxygen automatic control valve for sewage aeration, including shell, electric actuator, dissolved oxygen sensor, controller and valve component, electric actuator, dissolved oxygen sensor are electrically connected with controller respectively, valve component is set in shell, and the through hole is set up on shell;Valve component includes sector tooth, gear cover, sliding sheet and guide rail disc, guide rail disc is fixed in the inside of shell, and the front end surface of guide rail disc is provided with multiple slide rails, the rear end surface of sliding sheet is fixed with sliding block, and the front end surface of sliding sheet is provided with round shaft, multiple sliding sheets are one-to-one corresponding with slide rail, and sliding block is slidably connected in the slide rail of corresponding sliding sheet, guide rail disc is set in the front of sliding sheet, the rear end surface of gear cover is provided with multiple slot holes, slot hole is one-to-one corresponding with sliding sheet, and round shaft is slidably connected in corresponding slot hole, the outside of gear cover is provided with rack, and sector tooth is engaged with rack;Electric actuator is connected with sector tooth to drive sector tooth rotation.

[0007] In the preferred technical solution of the utility model, the shell includes lower shell seat and upper shell, the upper shell is installed on the front end surface of the lower shell seat, and the installation groove is formed in the lower shell seat, and the guide rail disc is installed in the installation groove.

[0008] The utility model discloses preferable technical scheme, valve part still includes drive shaft, drive shaft rotation is connected on lower shell seat, sets up the limit key on drive shaft, the round hole is seted up on the sector tooth, and the clamping slot is seted up on the round hole, the sector tooth is seted up on drive shaft through the round hole, and the limit key is connected with the clamping slot, and drive shaft is connected with electric actuator.

[0009] The utility model discloses preferable technical scheme, the slide piece is provided with two connecting edges of angle, and the step is seted up on two connecting edges, and the step on two connecting edges is opposite setting, and the step on the mutual adhesion connecting edge of connecting when adjacent slide piece is connected is clamped.

[0010] The utility model discloses preferable technical scheme, the slide piece number is 6, the included angle of two connecting edges that the slide piece is composed is 60 DEG, and the number of groove hole and slide rail is 6.

[0011] The utility model discloses preferable technical scheme, the gear cover with the guide rail disc are all circularly arranged, and the groove hole is along the axial setting of gear cover, and the extension line connection of 6 slide rails on the guide rail disc constitutes regular hexagon.

[0012] The utility model discloses preferable technical scheme, the slider is trapezoidal block, and the slide rail is trapezoidal groove.

[0013] The utility model discloses preferable technical scheme, the mounting hole is seted up on the front end surface of slide piece, and the bearing is installed in the mounting hole, and the round shaft is connected on the bearing.

[0014] The utility model discloses preferable technical scheme, the front end surface of upper shell and the rear end surface of lower shell seat all install the connecting flange for connecting pipeline.

[0015] The utility model discloses preferable technical scheme, the front end surface of upper shell still installs the sealing end cover, and electric actuator is fixed on the sealing end cover, and drive shaft passes through sealing end cover and is connected with the power output end of electric actuator.

[0016] The utility model discloses the beneficial effect is:

[0017] The utility model discloses a kind of dissolved oxygen automatic control valve for sewage aeration, oxygen content in water is detected by the dissolved oxygen sensor setting, when detecting that oxygen content and current sewage treatment condition do not match, controller controls electric actuator to act, electric actuator immediately controls sector tooth to control slide piece opening and closing by control.And the opening and closing degree of the slide piece in the present application is adjusted quickly and conveniently, and opening and closing degree adjustment precision is high, valve opening size can be flexibly adjusted according to actual application requirement, to adapt to the demand of sewage aeration, improve the efficiency of sewage treatment. ATTACHMENT DESCRIPTION

[0018] Figure 1 is a structural schematic view of a kind of automatic control valve for dissolved oxygen of sewage aeration provided in the embodiment of the utility model;

[0019] Figure 2 is Figure 1 side view structure schematic view;

[0020] Figure 3 is Figure 1 rear view structure schematic view;

[0021] Figure 4 is Figure 1 in the internal structure schematic view of shell after upper shell;

[0022] Figure 5 is Figure 4 in the structure schematic view of lower shell seat, guide rail disc and sliding sheet;

[0023] Figure 6 is Figure 4 in the structure schematic view of gear cover and sector tooth separation;

[0024] Figure 7 is Figure 5 in the structure schematic view of guide rail disc;

[0025] Figure 8 is Figure 6 rear view structure schematic view of gear cover;

[0026] Figure 9 is Figure 5 structure schematic view of sliding sheet whole;

[0027] Figure 10 is Figure 9 rear view structure schematic view of sliding sheet;

[0028] Figure 11 is Figure 9 structure schematic view of single sliding sheet;

[0029] Figure 12 is Figure 11 rear view structure schematic view of single sliding sheet.

[0030] In the figure:

[0031] 11, upper shell, 12, lower shell, 13, via, 14, connecting flange, 15, mounting groove, 2, electric actuator, 3, controller, 4, dissolved oxygen sensor, 51, sector tooth, 52, round hole, 53, clamping groove, 54, drive shaft, 55, limiting key, 61, gear cover, 62, rack, 63, slot hole, 7, sliding sheet, 71, round shaft, 72, sliding block, 73, mounting hole, 74, bearing, 75, connecting edge, 76, step, 8, guide rail disc, 81, sliding rail, 9, sealing end cover. DETAILED DESCRIPTION

[0032] The technical scheme of the utility model is further illustrated below in combination with the drawings and through specific embodiments.

[0033] As Figures 1-12 shown, the embodiment provides a dissolved oxygen automatic control valve for sewage aeration, which comprises a shell, an electric actuator 2, a dissolved oxygen sensor 4, a controller 3 and a valve component, the electric actuator 2 and the dissolved oxygen sensor 4 are electrically connected with the controller 3 respectively, the valve component is arranged in the shell, and a via 13 is formed in the shell; the valve component comprises sector teeth 51, a gear cover 61, sliding sheets 7 and a guide rail disc 8, the guide rail disc 8 is fixed to the inside of the shell, a plurality of sliding rails 81 are formed in the front end face of the guide rail disc 8, a sliding block 72 is fixed to the rear end face of the sliding sheet 7, a round shaft 71 is arranged on the front end face of the sliding sheet 7, the plurality of sliding sheets 7 correspond to the sliding rails 81 one by one, the sliding block 72 is slidably connected in the sliding rail 81 of the corresponding sliding sheet 7, the guide rail disc 8 is arranged in front of the sliding sheet 7, a plurality of slot holes 63 are formed in the rear end face of the gear cover 61, the slot holes 63 correspond to the sliding sheets 7 one by one, and the round shaft 71 is slidably connected in the corresponding slot hole 63, a rack 62 is arranged on the outside of the gear cover 61, and the sector teeth 51 are engaged with the rack 62; the electric actuator 2 is connected with the sector teeth 51 to drive the sector teeth 51 to rotate.

[0034] The control logic of the valve comprises automatic control logic and manual control logic. In automatic control, the controller 3 is set with a given required dissolved oxygen value in advance, the dissolved oxygen sensor 4 is inserted into sewage to monitor the dissolved oxygen in the sewage. When the detected dissolved oxygen is higher than the set dissolved oxygen value, the electric actuator 2 is controlled to reduce the opening of the valve component and reduce the air volume in the pipeline. When the detected dissolved oxygen is lower than the set dissolved oxygen value, the electric actuator 2 is controlled to increase the opening of the valve component and increase the air volume in the pipeline. The adjustment is stopped until the oxygen dissolved by the current air volume input reaches the required dissolved oxygen value. When the valve component is opened to the maximum and still cannot reach the specified dissolved oxygen value, the controller 3 is linked with an external alarm to issue an alarm to prompt that the air volume of the fan is too low. The manual control logic is not controlled by the controller 3, and the opening and closing of the valve component are manually adjusted.

[0035] When adjusting, the controller 3 sends an action instruction to the electric actuator 2, and the electric actuator 2 controls the valve component. The electric actuator 2 drives the sector gear 51 to rotate, and the sector gear 51 drives the gear cover 61 to rotate through meshing. The rotating gear cover 61 drives the sliding block 72 to slide along the sliding rail 81 on the guide disc 8 through the slot hole 63 on the back of the gear cover 61 and the circular shaft 71. The sliding blocks 72 slide synchronously, and when sliding away from the center of the guide disc 8, the valve is opened, and when sliding towards the center of the guide disc 8, the valve is closed until the sliding blocks 72 are stuck together to block the through hole 13, and the valve is closed. The sliding position of the sliding blocks 72 determines the opening of the valve, and the opening of the sliding blocks 72 is controlled by the gear cover 61. Controlling the rotation of the sector gear 51 can achieve fine adjustment and improve the control accuracy.

[0036] Further, the shell comprises a lower shell base 12 and an upper shell 11, the upper shell 11 is installed on the front end face of the lower shell base 12, the lower shell base 12 is provided with a mounting groove 15, and the guide disc 8 is installed in the mounting groove 15.

[0037] Further, the valve component further comprises a drive shaft 54, the drive shaft 54 is rotatably connected to the lower shell base 12, the drive shaft 54 is provided with a limiting key 55, the sector gear 51 is provided with a circular hole 52, the circular hole 52 is provided with a clamping groove 53, the sector gear 51 is sleeved on the drive shaft 54 through the circular hole 52, and the limiting key 55 is clamped with the clamping groove 53, and the drive shaft 54 is connected with the electric actuator 2. The electric actuator 2 drives the sector gear 51 to rotate by driving the drive shaft 54 to rotate, thereby controlling the sliding blocks 72.

[0038] Further, the sliding block 72 is provided with two connecting edges 75 at an included angle, and the two connecting edges 75 are provided with steps 76, and the steps 76 on the two connecting edges 75 are oppositely arranged; the connecting edges 75 are abutted when the adjacent sliding blocks 72 are connected, and the steps 76 on the abutting connecting edges 75 are clamped.

[0039] Further, the number of the sliding blocks 72 is six, and the included angle formed by the two connecting edges 75 on the sliding block 72 is 60°, and the number of the slot holes 63 and the sliding rails 81 is six.

[0040] Further, the gear cover 61 and the guide disc 8 are circular, the slot holes 63 are arranged along the axial direction of the gear cover 61, and the six sliding rails 81 are connected to form a regular hexagon on the guide disc 8.

[0041] Further, the sliding block 72 is a trapezoidal block, and the sliding rail 81 is a trapezoidal groove. The trapezoidal block slides in the trapezoidal groove, so that the sliding block 72 can slide smoothly.

[0042] Further, the front end surface of the sliding sheet 7 is provided with a mounting hole 73, a bearing 74 is mounted in the mounting hole 73, and the circular shaft 71 is connected to the bearing 74. The bearing 74 allows the circular shaft 71 to rotate when sliding along the slot hole 63, so that the control movement is smoother.

[0043] Further, the front end surface of the upper shell 11 and the rear end surface of the lower shell base 12 are both provided with a connecting flange 14 for connecting a pipeline. The valve is connected to the pipeline through the connecting flange 14, thereby controlling the opening and closing of the pipeline.

[0044] Further, the front end surface of the upper shell 11 is also provided with a sealing end cover 9, the electric actuator 2 is fixed to the sealing end cover 9, and the driving shaft 54 penetrates through the sealing end cover 9 and is connected to the power output end of the electric actuator 2.

[0045] Other technologies of the embodiment are the same as those of the prior art.

[0046] The utility model is described through preferred embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. The utility model is not limited by the specific embodiments disclosed herein, and other embodiments falling within the scope of the claims of the present application all belong to the protection scope of the utility model.

Claims

1. A dissolved oxygen automatic control valve for sewage aeration, characterized by: The valve comprises a housing, an electric actuator (2), a dissolved oxygen sensor (4), a controller (3) and a valve component, The electric actuator (2) and the dissolved oxygen sensor (4) are electrically connected to the controller (3) respectively, The valve component is arranged in the housing, and a through hole (13) is formed in the housing. The valve component comprises a sector tooth (51), a gear cover (61), a sliding sheet (7) and a guide rail disc (8). The guide rail disc (8) is fixed in the housing, and a plurality of sliding rails (81) are formed in the front end surface of the guide rail disc (8). The rear end surface of the sliding sheet (7) is fixed with a sliding block (72), and the front end surface of the sliding sheet (7) is provided with a round shaft (71). A plurality of sliding sheets (7) correspond to the sliding rails (81) one by one, and the sliding block (72) is slidably connected in the sliding rail (81) of the corresponding sliding sheet (7). The guide rail disc (8) is arranged in front of the sliding sheet (7). A plurality of slot holes (63) are formed in the rear end surface of the gear cover (61), and the slot holes (63) correspond to the sliding sheets (7) one by one. The round shaft (71) is slidably connected in the corresponding slot hole (63). The outer side of the gear cover (61) is provided with a rack (62), and the sector tooth (51) is engaged with the rack (62). The electric actuator (2) is connected with the sector tooth (51) to drive the sector tooth (51) to rotate.

2. The dissolved oxygen automatic control valve for sewage aeration according to claim 1, wherein: The housing comprises a lower shell seat (12) and an upper shell (11), and the upper shell (11) is arranged on the front end surface of the lower shell seat (12). The lower shell seat (12) is provided with a mounting groove (15) therein, and the guide rail disc (8) is arranged in the mounting groove (15).

3. The dissolved oxygen automatic control valve for sewage aeration according to claim 2, wherein: The valve component further comprises a driving shaft (54) which is rotatably connected to the lower shell seat (12). The driving shaft (54) is provided with a limiting key (55). The sector tooth (51) is provided with a round hole (52) and a clamping groove (53) in the round hole (52). The sector tooth (51) is sleeved on the driving shaft (54) through the round hole (52), and the limiting key (55) is clamped with the clamping groove (53). The driving shaft (54) is connected with the electric actuator (2).

4. The dissolved oxygen automatic control valve for sewage aeration according to claim 1, wherein: The sliding sheet (7) is provided with two connecting edges (75) at an angle, and the two connecting edges (75) are provided with steps (76) respectively, and the steps (76) on the two connecting edges (75) are oppositely arranged. The adjacent sliding sheets (7) are connected by the connecting edges (75), and the steps (76) on the mutually abutting connecting edges (75) are clamped.

5. The dissolved oxygen automatic control valve for sewage aeration according to claim 4, wherein: The number of the sliding sheets (7) is six, and the angle between the two connecting edges (75) on the sliding sheet (7) is 60°. The number of the slot holes (63) and the sliding rails (81) is six.

6. The dissolved oxygen automatic control valve for sewage aeration according to claim 1, characterized in that: The gear cover (61) and the guide rail disc (8) are circular, the groove (63) is arranged along the axial direction of the gear cover (61), and the extension lines of the six slide rails (81) on the guide rail disc (8) are connected to form a regular hexagon.

7. The dissolved oxygen automatic control valve for sewage aeration according to claim 1, characterized in that: The slide block (72) is a trapezoidal block, and the slide rail (81) is a trapezoidal groove.

8. The dissolved oxygen automatic control valve for sewage aeration according to claim 1, characterized in that: The front end surface of the slide block (7) is provided with a mounting hole (73), a bearing (74) is mounted in the mounting hole (73), and the round shaft (71) is connected to the bearing (74).

9. The dissolved oxygen automatic control valve for sewage aeration according to claim 2, characterized in that: The front end surface of the upper shell (11) and the rear end surface of the lower shell base (12) are both provided with a connecting flange (14) for connecting a pipeline.

10. The dissolved oxygen automatic control valve for sewage aeration according to claim 3, characterized in that: The front end surface of the upper shell (11) is further provided with a sealing end cover (9), the electric actuator (2) is fixed to the sealing end cover (9), and the driving shaft (54) is connected to the power output end of the electric actuator (2) through the sealing end cover (9).

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