Gate valve of sewage treatment pool

Abstract

The utility model provides a sewage treatment pool gate valve which comprises a valve body provided with a medium channel extending in the left-right direction; the valve element is arranged in the valve body in the vertical direction in a sliding mode and used for cutting off or opening the medium channel. The driving assembly comprises a shell, a lead screw rotationally arranged in the shell and a sliding base arranged outside the lead screw in a sleeving mode, the sliding base is connected to the valve element, and the sliding base is in linkage with the valve element to do reciprocating motion in the vertical direction; wherein a first fixed point position, a second fixed point position and a third fixed point position are sequentially arranged on the shell in the vertical direction at intervals, the first fixed point position and the second fixed point position are fixed to different inner walls of a sewage treatment pool respectively, and the third fixed point position is fixed to the valve body. The technical problems that a traditional gate valve cannot be opened or closed in time, and the operation safety is poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of biological laboratory construction, in particular to a gate valve for a sewage treatment pool. Background Art

[0002] The accident pool is an important part of the sewage treatment pool. The accident pool is mainly used to store and treat wastewater or waste. Its main functions are: 1. Reduce environmental pollution: The accident pool can quickly accept and treat pollutants to reduce harm to the environment; 2. Reduce the burden on the sewage treatment system: The accident pool is used to store and treat liquids or waste leaked due to container damage or other reasons, which helps to reduce the pressure on the sewage treatment system; 3. Play a buffering role: When a minor fault occurs in the treatment process, the wastewater can be temporarily stored in the accident pool to avoid the production process from being shut down due to the inability to remove the wastewater.

[0003] The biosafety laboratory is an important technical platform for highly pathogenic microorganism detection and scientific research. It is also a protective barrier to protect laboratory workers from infection and the external environment from pollution. Therefore, the effective operation of the accident pool is crucial to the safety of the biosafety laboratory and the external environment.

[0004] At present, the gate valve at the inlet of the accident pool is basically manually operated. It cannot respond quickly when the accident pool needs to accept sewage and wastewater, nor can it confirm the discharge status of sewage and wastewater in the grid channel or the sewage and wastewater in the water inlet pipe, and thus cannot close the gate valve in time. At the same time, because the gate valve is set in a limited space as a whole, the installation or adjustment of the gate valve requires the operator to enter it, which has poor operational safety and may be accidentally touched. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a sewage treatment pool gate valve to solve the technical problems in the related technology that the traditional gate valve cannot be opened or closed in time and has poor operating safety.

[0006] The utility model provides a gate valve for a sewage treatment pool, comprising:

[0007] The valve body has a medium passage extending in the left-right direction;

[0008] A valve core is disposed in the valve body and slides in an up-and-down direction, and is used to cut off or open the medium channel;

[0009] A driving assembly, comprising a housing, a screw rod rotatably arranged in the housing, and a slide seat sleeved outside the screw rod, wherein the slide seat is connected to the valve core, and the slide seat is linked to the valve core to make a reciprocating motion in the vertical direction;

[0010] Among them, the shell is sequentially and spaced apart with a first fixed point, a second fixed point and a third fixed point along the up and down directions. The first fixed point and the second fixed point are respectively fixed to different inner walls of the sewage treatment tank, and the third fixed point is fixed to the valve body.

[0011] Furthermore, the slide seat and the valve core are connected via a guide seat, and the guide seat includes a suspended portion at the bottom and a plurality of support portions at the top of the suspended portion. The suspended portions are arranged at intervals below the slide seat and are connected to the valve core. The support portions are arranged in an up-and-down direction to connect the slide seat and the suspended portion.

[0012] Furthermore, an avoidance groove is formed between the sliding seat and the suspended portion.

[0013] Furthermore, a support frame is provided in the shell, and a guide groove is provided in the support frame along the up-down direction, and the suspended portion is movably provided in the guide groove.

[0014] Furthermore, the suspended portion is rotatably provided with a roller for rolling cooperation with the guide groove.

[0015] Furthermore, the first fixing point is a first mounting plate formed on the top of the shell, the first mounting plate is horizontally arranged and has a plurality of first threaded holes.

[0016] Furthermore, the second fixing point is a plurality of second mounting plates formed in the middle of the shell, the second mounting plates have a horizontal end and a vertical end connected to each other, the horizontal end is sleeved outside the shell, and the vertical end has a plurality of second threaded holes.

[0017] Furthermore, two adjacent transverse ends are connected by a reinforcement rod.

[0018] Furthermore, the third fixed point is a connecting sleeve formed at the bottom of the shell, and the connecting sleeve is fixedly connected to the valve body.

[0019] Compared with the prior art, the utility model has the following beneficial effects: the slide seat can slide back and forth in the up and down directions with the forward and reverse rotation of the screw rod, so as to link the valve core to move synchronously, so that the medium channel can be opened or cut off through the valve core, thereby replacing the manual operation mode, so as to timely and quickly open or close the medium channel, and no worker intervention is required in this process, which effectively prevents the worker from improperly operating or accidentally touching the medium channel to open or close; at the same time, the first fixed point and the second fixed point of the shell can not only fix the gate valve on the inner wall of the sewage treatment tank, improve its structural stability, and facilitate the installation and positioning of the medium channel; but also move the drive assembly upward, extend the height of the gate valve operating end face, and facilitate installation, maintenance and operation adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a gate valve in one embodiment of the utility model;

[0021] Figure 2 for Figure 1 Side view of

[0022] Figure 3 for Figure 2 Sectional view along line AA;

[0023] Figure 4 This is a partial structural schematic diagram of a gate valve in an embodiment of the present utility model after omitting the housing and the valve body;

[0024] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0025] Figure 6 It is a structural schematic diagram of a gate valve in one embodiment of the utility model installed in a sewage treatment tank.

[0026] Description of Figure Numbers:

[0027] 1. Valve body; 101. Medium channel; 2. Valve core; 3. Shell; 4. Screw rod; 5. Sliding seat; 6. Suspended part; 7. Support part; 8. Avoidance groove; 9. Support frame; 901. Guide groove; 10. Roller; 11. First mounting plate; 12. Second mounting plate; 13. Reinforcement rod; 14. Connecting sleeve.

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and beneficial effects of the utility model more clear, the technical solution of the utility model is further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] In the embodiment of the present utility model, Figure 1-Figure 4 As shown, the sewage treatment pool gate valve comprises a valve body 1, a valve core 2 and a driving assembly; the valve body 1 has a medium channel 101 extending in the left and right directions; the valve core 2 is slidably arranged in the valve body 1 in the up and down directions, and is used to cut off or open the medium channel 101; the driving assembly comprises a housing 3, a screw rod 4 rotatably arranged in the housing 3 and a slide seat 5 sleeved outside the screw rod 4, the slide seat 5 is connected to the valve core 2, and the slide seat 5 links the valve core 2 to make a reciprocating motion in the vertical direction;

[0031] Among them, the shell 3 is sequentially and spaced apart with a first fixed point, a second fixed point and a third fixed point along the up and down directions. The first fixed point and the second fixed point are respectively fixed to different inner walls of the sewage treatment tank, and the third fixed point is fixed to the valve body 1.

[0032] Specifically, in the embodiment of the utility model, the upper part of the valve body 1 is sealed by a sealing cover, and the lower part thereof is formed with a medium channel 101 that passes through in the left and right directions; a valve core 2 is slidably arranged at the medium channel 101, and the medium channel 101 can be cut off or opened as the valve core 2 slides back and forth, thereby achieving the conduction and blocking of the medium channel 101. Of course, a corresponding sealing structure can be added to the valve core 2 to seal the gap formed between the valve core 2 and the valve body 1, which will not be described in detail here.

[0033] In the embodiment of the utility model, in order to drive the valve core 2 to move back and forth in the vertical direction, a shell 3 is fixed on the upper part of the valve body 1, and a matching screw rod 4 and a slide seat 5 are arranged in the shell 3. The screw rod 4 is arranged in the up and down direction, and is driven by a motor arranged in the shell 3 to rotate forward and reverse, so that the slide seat 5 mounted thereon can slide back and forth along the axial direction of the screw rod 4 under the rotation of the screw rod 4; after the slide seat 5 is connected to the valve core 2, the valve core 2 can move together with the slide seat 5, and the opening or closing of the operating medium channel 101 can be quickly adjusted by controlling the start and stop of the motor, replacing the manual operation mode, improving the operation accuracy, and reducing manpower input.

[0034] Specifically, flow meters are installed on the grate channel water inlet pipe and the accident pool water inlet to collect sewage flow rate data, and a capacitive level meter is installed in the grate channel to measure the sewage depth, and the above data is sent to a computer for processing, and then the computer runs and controls the above motor to change the opening of the valve core 2, thereby causing a change in the flow rate at the accident pool water inlet, and the flow data is fed back to the calculator, which dynamically calculates the opening of the valve core 2 and the time when the grate channel is full of water.

[0035] That is: 1. A flow meter is set at the water inlet of the grille channel, a capacitive liquid level meter is set in the grille channel, a flow meter is set at the water inlet of the accident pool, and a capacitive liquid level meter is set in the accident pool. The above equipment and motors are all connected to the computer.

[0036] 2. The valve core 2 is connected to the motor through the slide seat 5 and the screw rod 4. The opening and closing of the medium channel 101 are realized by the forward and reverse rotation of the screw rod 4 of the motor.

[0037] 3. The diameter of the valve body 1 is selected according to the diameter of the pipeline, and a rubber gasket is arranged inside the valve body 1 to increase its sealing performance.

[0038] 4. The flowmeters at the water inlet of the screen channel and the water inlet of the accident pool are electromagnetic flowmeters, with no limitation on specific shapes, which can accurately measure the flow and then transmit the flow data to the computer through wires or optical fibers.

[0039] 5. The principle of the capacitive level meter in the grille channel is: when the water level reaches a certain point, the capacitance of the level meter below the water level line changes due to the change in water pressure. The calculation element of the level meter calculates the water depth based on the change in capacitance, and then sends the water level data to the calculator.

[0040] 6. The principle of estimating the volume of sewage and wastewater is:

[0041] Define the area of ​​the grate channel inlet as S 格进 , flow rate is V 格进 (as a function of time), the flow rate at the grille pool inlet is Q 格进 =S 格进 ×V 格进

[0042] Define the bottom area of ​​the grate channel as S 格 , the water level at a certain moment is h 格 (as a function of time), the volume of the grid channel V 格 =S 格 ×h 格

[0043] Define the area of ​​the accident pool inlet as S, the flow rate as V (a function of time), then the flow rate at the accident pool inlet is Q 事进 =S 事进 ×V 事进

[0044] The following equality relations exist:

[0045] V 格 =Q 格进 × 事进 ×t

[0046] Taking partial derivatives of both ends of the equation with respect to time gives the partial function of the screen pool liquid level with respect to time.

[0047] According to the boundary conditions: when t = 0, h 格 =0, and the real-time data measured by the flow meter can be used to calculate the liquid level at any time, and the time when the screen channel is full of water can be estimated.

[0048] 7. The principle of automatic opening and closing:

[0049] Based on the above algorithm, the time when the water level of the grid channel reaches the bottom of the gate valve can also be estimated. At the same time, there is a capacitive level meter in the grid channel. When the water level reaches the bottom of the valve, the real-time measurement data of both will be sent to the computer. When the computer predicts that the water level will be higher than the bottom of the gate valve, the computer starts the motor. In order to prevent sewage from filling the accident pool, the buffering effect of the grid channel is fully utilized, and the opening size of the valve core 2 is controlled according to the flow of the sewage pipe, the flow of the grid pool inlet and other data.

[0050] Since the bottom of the gate valve is at a certain height from the bottom of the screen channel, when the accident pool is activated for the first time, the sewage at the bottom of the gate valve cannot be drained, and the liquid level gauge in the screen channel will continue to send water level data. When the accident pool is activated again, the calculator will be trained and learned based on the data transmitted by the flow meter at the water inlet of the screen channel, the capacitive liquid level gauge in the screen channel, the flow meter at the water inlet of the accident pool, and the capacitive liquid level gauge in the accident pool. It will deduct the existing sewage volume and recalculate the opening and closing time of the valve core 2 and the real-time capacity of the accident pool.

[0051] According to the flow rate of sewage and wastewater at the water inlet of the grille pool, the time when the grille pool is full of water can be estimated. The time when the accident pool is full of water can also be calculated based on the data provided by the liquid level meter in the accident pool, providing a basis for management personnel to take effective measures; according to the calculation formula, when the water level is estimated to exceed the bottom of the gate valve, or when the liquid level meter in the grille channel detects that the water level has reached the bottom of the gate valve, the real-time measurement data of both will be sent to the computer, and the computer will start the motor; finally, according to the flow rate of the sewage pipe, the flow rate of the water inlet of the grille pool and other data, the valve core 2 is controlled to open and close, the result feedback is timely, the operation is fast, and no human intervention is required to prevent the medium channel 101 from being opened or closed by mistake due to workers' misoperation.

[0052] In the embodiment of the utility model, the shell 3 is provided with a first fixed point, a second fixed point and a third fixed point in sequence along the up and down directions. The first fixed point and the second fixed point are respectively fixed at different inner walls of the sewage treatment tank. On the one hand, the stability of the shell 3 can be improved from different directions. On the other hand, the installation point of the shell 3 can be quickly located, and the installation height of the drive structure is extended, which is more convenient for installation, maintenance and adjustment operations (that is, compared with the operation end directly attached to the valve body 1 for installation, the gate valve uses the total height of the valve core 2 and the length of the screw rod 4 to extend its overall height); furthermore, the third fixed point can be fixed at the valve body 1 to improve the overall sealing of the gate valve.

[0053] This embodiment controls the lifting or lowering of the valve core 2 by the forward and reverse rotation of the screw rod 4, so as to open and close the medium channel 101 and prevent the possibility of accidental touch; and with the cooperation of the drive structure, the overall height of the gate valve can be extended, so that the operating end can be placed above the valve body 1, and a distance is formed between the two to facilitate installation, maintenance and operation adjustment, so that the drive structure and the valve body 1 form two independent structures, and can be connected and fixed through multiple fixed points, and installed in the sewage treatment tank.

[0054] like Figure 4 As shown, in one embodiment, the slide 5 is connected to the valve core 2 through a guide seat, and the guide seat includes a suspended portion 6 at the bottom and a plurality of supporting portions 7 at the top of the suspended portion 6. The suspended portion 6 is arranged below the slide 5 at intervals and connected to the valve core 2. The supporting portion 7 is arranged in the up-down direction to connect the slide 5 and the suspended portion 6. Specifically, in order to extend the overall height of the gate valve, the embodiment is provided with a supporting portion 7 and a suspended portion 6 connected in the up-down direction. The supporting portion 7 is fixed to the slide 5 and is used to link the suspended portion 6 with the supporting portion 7 for synchronous movement. The suspended portion 6 is connected to the valve core 2 so as to drive the valve core 2 to move back and forth in the up-down direction. With the cooperation of the suspended portion 6 and the supporting portion 7, the installation height of the screw rod 4 and the slide 5 can be increased, so that the operating surface of the gate valve is set away from the valve body 1 to avoid accidental touch during maintenance.

[0055] Preferably, an escape groove 8 is formed between the slide seat 5 and the suspended portion 6 for escaping the screw rod 4 .

[0056] like Figure 5 As shown, in one embodiment, a support frame 9 is provided in the housing 3, and a guide groove 901 is provided in the support frame 9 along the vertical direction, and the suspended portion 6 is movably provided in the guide groove 901. Specifically, in order to improve the stability of the slide 5, the suspended portion 6 and the valve core 2 during movement, the present embodiment provides a support frame 9 in the housing 3, and the support frame 9 is used as a supporting body on one hand to install the driving structure, and on the other hand to form a guide groove 901 provided along the vertical direction, so that the suspended portion 6 can extend into the guide groove 901, so as to prevent the slide 5, the suspended portion 6 and the valve core 2 from shaking in the front-back direction under the constraint of the guide groove 901.

[0057] Preferably, in order to reduce the friction between the suspended portion 6 and the guide groove 901, a roller 10 is rotatably provided at the suspended portion 6 for rolling cooperation with the guide groove 901; the rolling of the roller 10 can avoid sliding friction and affect the life of the gate valve.

[0058] like Figure 1-Figure 3 , Figure 6As shown, in one embodiment, the first fixing point is a first mounting plate 11 formed on the top of the housing 3, the first mounting plate 11 is horizontally arranged, and has a plurality of first threaded holes. Specifically, in order to fix the gate valve to the sewage treatment tank, the embodiment fixes a first mounting plate 11 arranged in a horizontal direction on the top of the housing 3, and the first mounting plate 11 is fixed to the top of the sewage treatment tank by using expansion screws.

[0059] Further, in one embodiment, the second fixing point is a plurality of second mounting plates 12 formed in the middle of the housing 3, the second mounting plates 12 having a horizontal end and a vertical end connected to each other, the horizontal end being sleeved outside the housing 3, and the vertical end having a plurality of second threaded holes. Specifically, in order to improve the stability of the housing 3, a second mounting plate 12 is provided in the middle of the housing 3, the second mounting plate 12 may be a T-shaped structure or an L-shaped structure, and its vertical end is used to be fixed to the side wall of the sewage treatment tank, so as to cooperate with the first mounting plate 11 to fix the housing 3 from different directions.

[0060] Preferably, the adjacent two transverse ends are connected by a reinforcing rod 13 for reinforcing the adjacent two second mounting plates 12. Of course, the reinforcing rod 13 can be a telescopic rod, so that the reinforcing rod 13 between the adjacent two second mounting plates 12 is installed in place, until the two ends of the reinforcing rod 13 are respectively abutted against the upper and lower second mounting plates 12.

[0061] like Figure 1-Figure 3 As shown, in one embodiment, the third fixed point is a connecting sleeve 14 formed at the bottom of the shell 3, and the connecting sleeve 14 is fixedly connected to the valve body 1 to achieve a seamless connection between the shell 3 and the valve body 1 through the connecting sleeve 14, thereby improving the sealing performance of the gate valve.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A gate valve for a sewage treatment pool, characterized in that: include: The valve body has a medium passage extending in the left-right direction; A valve core is disposed in the valve body and slides in an up-and-down direction, and is used to cut off or open the medium channel; A driving assembly, comprising a housing, a screw rod rotatably arranged in the housing, and a slide seat sleeved outside the screw rod, wherein the slide seat is connected to the valve core, and the slide seat is linked to the valve core to make a reciprocating motion in the vertical direction; Among them, the shell is sequentially and spaced apart with a first fixed point, a second fixed point and a third fixed point along the up and down directions. The first fixed point and the second fixed point are respectively fixed to different inner walls of the sewage treatment tank, and the third fixed point is fixed to the valve body.

2. A sewage treatment pool gate valve as claimed in claim 1, characterized in that: The slide seat is connected to the valve core via a guide seat, and the guide seat includes a suspended portion at the bottom and a plurality of support portions at the top of the suspended portion. The suspended portions are arranged at intervals below the slide seat and are connected to the valve core. The support portions are arranged in an up-down direction to connect the slide seat and the suspended portion.

3. A sewage treatment pool gate valve as claimed in claim 2, characterized in that: An escape groove is formed between the sliding seat and the suspended portion.

4. A sewage treatment pool gate valve as claimed in claim 2 or 3, characterized in that: A support frame is arranged in the shell, and a guide groove is arranged in the upper and lower directions of the support frame, and the suspended part is movably arranged in the guide groove.

5. A sewage treatment pool gate valve as claimed in claim 4, characterized in that: The suspended portion is rotatably provided with a roller for rolling cooperation with the guide groove.

6. A sewage treatment pool gate valve as claimed in claim 1, characterized in that: The first fixing point is a first mounting plate formed on the top of the shell, the first mounting plate is horizontally arranged and has a plurality of first threaded holes.

7. A sewage treatment pool gate valve as claimed in claim 1, characterized in that: The second fixing point is a plurality of second mounting plates formed in the middle of the shell, the second mounting plates have a horizontal end and a vertical end connected to each other, the horizontal end is sleeved outside the shell, and the vertical end has a plurality of second threaded holes.

8. A sewage treatment pool gate valve as claimed in claim 7, characterized in that: Two adjacent transverse ends are connected via a reinforcing rod.

9. A sewage treatment pool gate valve as claimed in claim 1, characterized in that: The third fixed point is a connecting sleeve formed at the bottom of the shell, and the connecting sleeve is fixedly connected to the valve body.

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