Water inlet and outlet valve for sewage plant and using method

Abstract

The invention relates to the technical field of valves, in particular to a water inlet and outlet valve for a sewage plant and a using method.The water inlet and outlet valve comprises a valve body, a water inlet cavity and a water outlet cavity, a filter cartridge is installed in an inner cavity of the water outlet cavity, a valve element is installed in the filter cartridge, a blow-off pipe is installed at the bottom of the valve body, a check block is installed in the blow-off pipe, and a first driving part and a second driving part are installed at the top of the valve body; according to the valve, the filter cartridge is mounted in the water outlet cavity, so that when sewage enters the filter cartridge from the water inlet cavity through the communicating port, impurities are intercepted by the filter holes, the impurities can be effectively prevented from entering subsequent pipelines and equipment, blockage and abrasion are avoided, the maintenance frequency is reduced, and the valve element is independently controlled to ascend and descend through the first driving part; the overflow area can be changed by adjusting the alignment degree of the communicating opening and the water inlet cavity, the flow is flexibly controlled, during sewage discharging, the second driving piece drives the check block to descend so that the sewage discharging pipe can be opened, the valve does not need to be disassembled, the maintenance time is greatly shortened, the use efficiency is improved, and the overall practicability is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to a water inlet and outlet valve for sewage plants and a use method thereof. BACKGROUND

[0002] During the operation of a sewage plant, the water inlet and outlet valve is a key component for controlling the flow of sewage, and its performance directly affects the stability and efficiency of the sewage treatment process. At present, the traditional water inlet and outlet valve for sewage plants has obvious deficiencies in the design of core on-off and impurity treatment: on the one hand, most valves do not integrate a special filter structure, and the impurities such as silt and fibers carried by the sewage are easy to enter the subsequent pipeline or treatment equipment with the water flow, and long-term accumulation can cause pipeline blockage and equipment wear, increasing the maintenance frequency and cost; even a few valves have added filter components, but due to the lack of a convenient pollution discharge channel and supporting structure, the impurities need to be cleaned by disassembling the valve body, which not only is complex and time-consuming, but also interrupts the sewage treatment process, seriously affecting the operation efficiency of the sewage plant and increasing the maintenance cost. Therefore, the present application provides a water inlet and outlet valve for sewage plants and a use method thereof. SUMMARY

[0003] The purpose of the present application is to provide a water inlet and outlet valve for sewage plants and a use method thereof, which can filter and treat sewage and efficiently discharge pollutants to improve efficiency.

[0004] To achieve the above-mentioned purpose, the first technical solution provided by the present application is: A water inlet and outlet valve for sewage plants, comprising a valve body, a water inlet cavity and a water outlet cavity are arranged inside the valve body, and the water inlet cavity is located above the water outlet cavity, the water inlet cavity and the water outlet cavity are both communicated with an installation pipe, a filter cartridge with filter holes in the side wall and through both ends is installed in the water outlet cavity, a locking assembly is installed in communication with the bottom of the filter cartridge, a valve core with a hollow interior and a through bottom is slidably connected inside the filter cartridge, a communication port is formed in the side wall of the valve core close to the water inlet cavity, a blowdown pipe is installed at the bottom of the valve body and is in communication with the bottom of the locking assembly, a stop block is slidably installed inside the blowdown pipe, a first limiting hole is formed in the side wall of the lower end of the valve core, and a second limiting hole is formed in the side wall of the stop block, the second limiting hole is arranged opposite to the first limiting hole, and a first driving element for driving the valve core to ascend and descend and a second driving element for driving the stop block are installed at the top of the valve body. When the valve body is working, the second locking part of the locking assembly is inserted into the second limiting hole, and when the valve body is discharging pollutants, the first locking part of the locking assembly is inserted into the first limiting hole.

[0005] Preferably, the locking assembly includes an internally hollow annular fixing seat. A first locking member and a second locking member are respectively installed inside the annular fixing seat on opposite sides. The first locking member and the second locking member each include a limiting post one and a limiting post two, and one end of the limiting post one and the limiting post two both protrude through the inner ring of the annular fixing seat. A connecting strip is connected between the ends of the limiting post one and the limiting post two located inside the annular fixing seat, and a spring is connected between the connecting strip and the inner wall of the annular fixing seat. When the valve body is in operation with water flow, the second locking pin of the second locking member is inserted into the second limiting hole. When the valve body is in operation with sewage discharge, the first locking pin of the first locking member is inserted into the first limiting hole.

[0006] Preferably, the valve core includes a first cylinder and a second cylinder that are interconnected, and the diameter of the second cylinder is smaller than the diameter of the first cylinder and is located below the first cylinder. The first cylinder has a communication opening on its side wall and abuts against the inner wall of the filter cylinder. The second cylinder has a first limiting hole on its side wall. An annular brush that abuts against the inner wall of the filter cylinder is installed on the outer wall of the second cylinder, and the first limiting hole is located below the annular brush.

[0007] Preferably, the top of the inner ring of the annular fixing seat is provided with a downward inclined surface.

[0008] Preferably, the first driving component includes a first screw and a nut that cooperate with each other. The nut is installed on the top of the inner cavity of the valve core. The top of the first screw passes through the inner cavity of the nut and is connected to a first rotating rod. Both the first rotating rod and the first screw have through structures inside. The first rotating rod passes through the top of the valve body and is connected to a first handwheel. The second driving component includes a second screw threadedly connected to the stop block, and the top of the second screw passes through the inner cavity of the first screw and the first rotating rod in sequence and is connected to a second handwheel.

[0009] Preferably, the first cylinder and the second cylinder are rotatably connected, the bottom of the first screw passes through a nut and is connected to a limit block, the bottom of the limit block is connected to a telescopic rod, and the telescopic rod is connected to the top of the second cylinder.

[0010] Preferably, the first limiting hole is a strip groove extending along the axial direction of the second cylinder, and the angle of the strip groove is 40 degrees to 60 degrees.

[0011] Preferably, the sewage pipe is a reducing pipe, and the smaller diameter end of the sewage pipe is connected to the locking assembly. The stop block is adapted to the inner wall of the smaller diameter end of the sewage pipe. A fixing strip is connected between the inner walls of the larger diameter end of the sewage pipe and the fixing strip is slidably connected to a sliding rod. One end of the sliding rod is connected to the bottom of the stop block.

[0012] Preferably, the top of the block is provided with a tapered pollution discharge head, the bottom of the block is connected with a pollution scraping ring, and the pollution scraping ring is in interference fit with the inner wall of the pollution discharge pipe.

[0013] The second technical solution of the present application is: A use method of a water inlet and outlet valve for a sewage plant, comprising the following steps: When the water inlet and outlet valve is in water passing work, the valve core is lifted by the first driving member to make the communication port communicate with the water inlet cavity, sewage flows into the filter cartridge through the water inlet cavity and the communication port for filtration and is discharged by the water outlet cavity, and at this time, the block is locked and fixed by the second locking member of the locking assembly; When the water inlet and outlet valve is in pollution discharge work, the valve core is lowered by the first driving member to close the communication port, and the annular brush cleans the inner wall of the filter cartridge to make the filtered material fall off, and after the valve core is completely closed, the block is lowered to the large diameter end of the pollution discharge pipe by the second driving member to perform pollution discharge work, and at this time, the valve core is locked and fixed by the first locking member of the locking assembly.

[0014] Compared with the prior art, the present application has the following advantages: 1. The valve of the present application installs the filter cartridge in the water outlet cavity, so that when sewage enters the filter cartridge from the water inlet cavity through the communication port, impurities are intercepted by the filter holes, which can effectively prevent impurities from entering subsequent pipelines and equipment, avoid blockage and wear, reduce the number of maintenance, and the valve core can be lifted and lowered by the first driving member alone, the alignment degree of the communication port and the water inlet cavity can be adjusted to change the flow area, and the flow rate can be flexibly controlled, and when discharging pollution, the block is lowered by the second driving member to open the pollution discharge pipe, so that the valve does not need to be disassembled, the maintenance time is greatly shortened, the use efficiency is improved, and the overall practicality is strong. 2. The second locking member of the locking assembly is inserted into the second limiting hole of the block during water passing, the block is fixed to ensure that the pollution discharge pipe is sealed, there is no sewage leakage, and the block can remain stationary during water passing, thereby achieving the locking function of the block and avoiding misoperation of the block during water passing; and the first locking member of the locking assembly is inserted into the first limiting hole of the valve core during pollution discharge, the valve core is fixed, so that the valve core can remain stationary during pollution discharge, thereby achieving the locking function of the valve core and avoiding misoperation of the valve core during pollution discharge. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used for the embodiment description, and obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creating labor.

[0016] Figure 1The cross-sectional structure schematic diagram of the water inlet and outlet valve of the present application; Figure 2 The cross-sectional structure schematic diagram of the water inlet and outlet valve of the present application; Figure 1 The enlarged structure schematic diagram of A in the above figure; Figure 3 The cross-sectional structure schematic diagram of the locking assembly in the water inlet and outlet valve of the present application; Figure 4 The cross-sectional structure schematic diagram of the first driving member and the second driving member and their connecting structure in the water inlet and outlet valve of the present application; Figure 5 The cross-sectional structure schematic diagram of the water inlet and outlet valve of the present application; Figure 4 The enlarged structure schematic diagram of B in the above figure; Figure 6 The cross-sectional structure schematic diagram of the water inlet and outlet valve of the present application; Figure 5 The enlarged structure schematic diagram of B in the above figure; Figure 7 The cross-sectional structure schematic diagram of the water inlet and outlet valve of the present application; Figure 8 The cross-sectional structure schematic diagram of the water inlet and outlet valve of the present application.

[0017] In the drawings, the components represented by each reference numeral are listed as follows: 1, valve body; 2, water inlet cavity; 3, water outlet cavity; 4, mounting pipe; 5, filter cylinder; 6, locking assembly; 61, annular fixing seat; 62, limiting column one; 63, limiting column two; 64, connecting strip; 65, spring; 7, valve core; 71, first limiting hole; 72, first cylinder; 73, second cylinder; 74, annular brush; 8, communication port; 9, blowdown pipe; 91, fixing strip; 92, sliding rod; 10, stop block; 101, second limiting hole; 102, conical blowdown head; 103, scraping ring; 11, first driving member; 111, first screw rod; 112, nut; 113, first rotating rod; 114, first hand wheel; 115, limiting block; 116, telescopic rod; 12, second driving member; 121, second screw rod; 122, second hand wheel. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] As shown in the figure, the first embodiment of the present application is: Figures 1-8 ​The utility model provides a sewage plant uses water inlet and outlet valve, including valve body 1, be provided with water inlet cavity 2 and water outlet cavity 3 in valve body 1, and water inlet cavity 2 is located water outlet cavity 3 top, and water inlet cavity 2 and water outlet cavity 3 all are connected with installation pipe 4, and the filter cylinder 5 that the side wall of water outlet cavity 3 inner chamber is equipped with and is opened with filter hole, and both ends are through, and the filter cylinder 5 bottom is connected with locking assembly 6, and the valve core 7 that the inside hollow and bottom are through are slidably connected in filter cylinder 5, and the side wall of valve core 7 is opened with the communicating port 8 close to water inlet cavity 2, and the valve body 1 bottom is installed with blow-off pipe 9, and blow-off pipe 9 is connected with locking assembly 6 bottom, and the stopper 10 is slidably installed in blow-off pipe 9, and the side wall of valve core 7 lower end is opened with first limit hole 71, and the side wall of stopper 10 is opened with second limit hole 101, and second limit hole 101 is oppositely arranged with first limit hole 71, and the valve body 1 top is installed with the first driving part 11 of driving valve core 7 and the second driving part 12 of driving stopper 10 respectively, When the valve body 1 is in water passing work, the second locking part of the locking assembly 6 is inserted into the second limit hole 101, and when the valve body 1 is in blow-off work, the first locking part of the locking assembly 6 is inserted into the first limit hole 71.

[0020] In the embodiment, the locking assembly 6 includes an annular fixed seat 61 which is hollow, and the first locking part and the second locking part are respectively installed in the inner sides of the opposite sides of the annular fixed seat 61, the first locking part and the second locking part each include a first limiting column 62 and a second limiting column 63, one end of each of the first limiting column 62 and the second limiting column 63 penetrates the inner ring of the annular fixed seat 61, and the first limiting column 62 and the second limiting column 63 are connected by a connecting strip 64 at one end located in the annular fixed seat 61, and the connecting strip 64 is connected with the inner wall of the annular fixed seat 61 by a spring 65; When the valve body 1 is in water passing work, the second limiting column 63 of the second locking part is inserted into the second limit hole 101, and when the valve body 1 is in blow-off work, the first limiting column 62 of the first locking part is inserted into the first limit hole 71; the annular fixed seat of the locking assembly provides a mounting base, and the elastic force of the spring can push the connecting strip, so that the limiting columns automatically penetrate the inner ring of the annular fixed seat and are inserted into the corresponding limit holes, without an additional power source, the structure is simple and the cost is low; at the same time, the stable spring elastic force can ensure that the limiting columns are tightly matched with the limit holes, the locking is reliable, and displacement of the valve core or the stopper during working condition switching is avoided.

[0021] In the embodiment, the valve core 7 comprises a first cylinder 72 and a second cylinder 73 which are in communication with each other, the diameter of the second cylinder 73 is smaller than that of the first cylinder 72 and the second cylinder 73 is located below the first cylinder 72, a communication port 8 is arranged on the side wall of the first cylinder 72 and the first cylinder 72 abuts against the inner wall of the filter cartridge 5, a first limiting hole 71 is arranged on the side wall of the second cylinder 73, an annular brush 74 is arranged on the outer wall of the second cylinder 73 and abuts against the inner wall of the filter cartridge 5, and the first limiting hole 71 is located below the annular brush 74. The first cylinder (the top of the first cylinder is a sealing structure) of the valve core abuts against the inner wall of the filter cartridge, can seal the upper part of the filter cartridge and prevent the unfiltered sewage from directly entering the water outlet cavity. The communication port on the side wall of the first cylinder can be precisely docked with the water inlet cavity to ensure smooth water flow. The annular brush on the outer wall of the second cylinder abuts against the inner wall of the filter cartridge, so that the brush can scrape off the impurities attached to the inner wall of the filter cartridge when the valve core is lifted and lowered, prevent the filter hole from being blocked and maintain the filtering effect without the need of cleaning the inner wall of the filter cartridge.

[0022] In the embodiment, the top of the inner ring of the annular fixing seat 61 is provided with an inclined downward inclined surface which can guide the impurities in the filter cartridge to slide downward along the inclined surface, avoid the impurities from being accumulated on the top of the annular fixing seat and ensure that the impurities can smoothly fall into the sewage discharge pipe during sewage discharge without affecting the sewage discharge efficiency.

[0023] In the embodiment, the first driving member 11 comprises a first screw rod 111 and a nut 112 which cooperate with each other, the nut 112 is arranged on the top of the inner cavity of the valve core 7, the top of the first screw rod 111 penetrates through the inner cavity of the nut 112 and is connected with a first rotating rod 113, the first rotating rod 113 and the first screw rod 111 are both through structures, the first rotating rod 113 penetrates out of the top of the valve body 1 and is connected with a first hand wheel 114, the first screw rod of the first driving member cooperates with the nut, and the valve core can be lifted and lowered by rotating the first hand wheel, which is simple to operate. The second driving member 12 comprises a second screw rod 121 which is threadedly connected with the stop block 10, the top of the second screw rod 121 penetrates through the inner cavities of the first screw rod 111 and the first rotating rod 113 in sequence and is connected with a second hand wheel 122, the first rotating rod and the first screw rod are through structures, providing an installation space for the second screw rod of the second driving member so that the second screw rod can penetrate into the space, realizing compact layout of the two driving members and saving the internal space of the valve body. The second screw rod is threadedly connected with the stop block, and the stop block can be controlled to slide by rotating the second hand wheel without the need of complex transmission structure, which is convenient to operate and occupies small space.

[0024] In the embodiment, the first cylinder 72 and the second cylinder 73 are rotationally connected, the first screw rod 111 passes through the nut 112 at the bottom and is connected to the limiting block 115, the bottom of the limiting block 115 is connected to the telescopic rod 116, and the telescopic rod 116 is connected to the top of the second cylinder 73. When the first hand wheel is rotated, the first screw rod drives the limiting block to rotate, and the telescopic rod drives the second cylinder to rotate, thereby making the annular brush rotate to scrape off the impurities on the inner wall of the filter cartridge. Compared with only scraping up and down, rotating to scrape is more comprehensive, and the cleaning effect is better. Moreover, the limiting block can limit the lifting range of the first screw rod, preventing the first screw rod from being pulled out of the nut, and improving the safety and stability of the driving structure.

[0025] In the embodiment, the first limiting hole 71 is a strip-shaped slot extending along the axial direction of the second cylinder 73, and the angle of the strip-shaped slot is 40-60 degrees. Compared with a circular hole, the angle design of the strip-shaped slot can expand the insertion range of the limiting column one. That is, when the second cylinder is rotating, there is a slight angular deviation, and the limiting column one can also be smoothly inserted into the strip-shaped slot, avoiding the situation of locking jamming or being unable to lock, and improving the fault tolerance and reliability of locking.

[0026] In the embodiment, the blow-off pipe 9 is a variable-diameter pipe, the small-diameter end of the blow-off pipe 9 is in communication with the locking assembly 6, the stop block 10 is matched with the inner wall of the small-diameter end of the blow-off pipe 9, and the fixed strip 91 is connected between the inner walls of the large-diameter end of the blow-off pipe 9. The fixed strip 91 penetrates and is connected to the sliding rod 92, one end of the sliding rod 92 is connected to the bottom of the stop block 10. The blow-off pipe is designed as a variable-diameter pipe, the small-diameter end is in communication with the locking assembly and matched with the stop block, which can enhance the sealing effect of the stop block and the blow-off pipe, and reduce the leakage when water flows. The space of the large-diameter end is larger, which is convenient for the impurities to be discharged. The fixed strip is fixed to the inner wall of the large-diameter end of the blow-off pipe, the sliding rod penetrates the fixed strip and is connected to the stop block, which can provide guidance for the sliding of the stop block, prevent the stop block from deviating when sliding, ensure that the stop block is accurately docked with the small-diameter end of the blow-off pipe, and improve the operation stability.

[0027] In the embodiment, the top of the stop block 10 is provided with a tapered blow-off head 102, and the bottom of the stop block 10 is connected to a scraping ring 103, which is in interference fit with the inner wall of the blow-off pipe 9. The tapered blow-off head at the top of the stop block can guide the stop block to accurately align with the small-diameter end when the stop block slides upward to seal the blow-off pipe, avoid the situation that the sealing is not tight due to the positional deviation, improve the sealing efficiency, and the impurities will not accumulate on the top of the stop block when the blow-off is performed. The scraping ring at the bottom of the stop block is in interference fit with the inner wall of the blow-off pipe, and the scraping ring can scrape off the impurities attached to the inner wall of the blow-off pipe when the stop block slides up and down, preventing the impurities from accumulating and blocking the blow-off pipe, ensuring that the blow-off channel is unobstructed, and reducing the maintenance frequency of the blow-off pipe.

[0028] The specific working process of the water inlet and outlet valve is as follows: When the valve is installed, the water inlet chamber 2 and the water outlet chamber 3 of the valve are respectively in communication with the external water inlet pipe and the water outlet pipe, and the blow-off pipe 9 is in communication with the external blow-off port.

[0029] When water is flowing, the staff operates the first hand wheel 114 of the first driving member 11, drives the first rotating rod 113 to rotate, and further drives the first screw rod 111 to rotate; the first screw rod 111 cooperates with the nut 112 at the top of the inner cavity of the valve core 7, drives the valve core 7 to slide upward along the inner wall of the filter cylinder 5, until the communication port 8 of the side wall of the first cylinder 72 is communicated with the water inlet cavity 2, the sewage flows from the water inlet cavity 2 of the valve body 1, enters the inside of the filter cylinder 5 through the communication port 8; the impurities in the sewage are intercepted in the filter cylinder 5 by the filter holes in the side wall of the filter cylinder 5, and the filtered sewage enters the water outlet cavity 3 through the filter holes, and the water flowing and filtering process is completed.

[0030] And in the water flowing process, when the flow of the sewage changes, the valve core 7 is lifted and lowered by rotating the first driving member 11, the coincidence degree of the communication port 8 and the water inlet cavity 2 is adjusted, so as to adjust the flow of the valve.

[0031] In the water flowing process, when the valve core 7 rises and is out of contact with the limiting column one 62 in the second locking member, the spring 65 can push the connecting strip 64 and the limiting column two 63 to pass out of the inner ring of the annular fixing seat 61, and is inserted into the second limiting hole 101 of the blocking block 10, so as to fix the blocking block 10 at the small diameter end of the sewage discharge pipe 9, realize the sealing of the sewage discharge pipe 9 (and at this time, the limiting column two 63 in the first locking member will drive the limiting column one 62 to enter the annular fixing seat 61 due to the extrusion of the blocking block 10, that is, the limiting column one 62 will not be inserted into the first limiting hole 71 of the valve core 7), so that the stability of the blocking block 10 can be maintained during the water flowing process, and at the same time, the blocking block 10 is locked, so that the operator cannot operate the second driving member 12 during the water flowing process (that is, the second driving member 12 is also in the locked state), thereby avoiding the problem of misoperation of the operator.

[0032] When the sewage is discharged, the first hand wheel 114 of the first driving member 11 is operated, the first rotating rod 113 and the first screw rod 111 are reversely rotated, the valve core 7 is driven to slide downward along the inner wall of the filter cylinder 5, until the communication port 8 is separated from the water inlet cavity 2, and the communication between the water inlet cavity 2 and the filter cylinder 5 is cut off; during this process, the annular brush 74 on the outer wall of the second cylinder 73 moves downward with the valve core 7, and the impurities attached to the inner wall of the filter cylinder 5 are scraped off, and at the same time, since the first cylinder 72 is rotationally connected with the second cylinder 73, the limiting block 115 can drive the telescopic rod 116 to rotate synchronously during the rotation of the first screw rod 111, and further drives the second cylinder 73 and the annular brush 74 to rotate, so that the impurities on the inner wall of the filter cylinder 5 are scraped off by the annular brush 74 rotating while descending, and a more comprehensive cleaning is realized. When the valve core 7 moves down to the designated position (the second cylinder 73 is inserted into the inner ring of the annular fixing seat 61), the side wall of the second cylinder 73 abuts against the limiting column two 62 in the second locking part, thereby pushing the connecting strip 64 and the limiting column two 63 in the second locking part to retract into the annular fixing seat 61, so that the limiting column two 63 in the second locking part is separated from the second limiting hole 101, and the blocking block 10 is unlocked; Then, the second hand wheel 122 is operated to drive the second screw rod 121 to rotate; the second screw rod 121 is in threaded cooperation with the blocking block 10, and drives the blocking block 10 to slide downward along the inner wall of the blowdown pipe 9; the impurity scraping ring 103 at the bottom of the blocking block 10 moves with the blocking block 10 to scrape off the impurities on the inner wall of the blowdown pipe 9; at the same time, the small-diameter end of the blowdown pipe 9 is opened, the impurities in the filter cartridge 5 slide downward along the inclined surface at the top of the inner ring of the annular fixing seat 61, fall into the blowdown pipe 9 through the inner cavity of the annular fixing seat 61, and are discharged from the large-diameter end of the blowdown pipe 9, thereby completing the blowdown operation.

[0033] At the same time, when the blocking block 10 descends, the blocking block 10 gradually separates from the limiting column two 63 in the first locking part, so that the limiting column two 63, the connecting strip 64 and the limiting column one 62 in the first locking part are penetrated out of the inner ring of the annular fixing seat 61 under the restoring force of the spring 65, and the limiting column one 62 is inserted into the first limiting hole 71 of the second cylinder 73 to lock and fix the valve core 7, so that the operator cannot operate the first driving part 11 during the blowdown process (that is, the second driving part 12 is also in the locked state), thereby avoiding the problem of misoperation of the operator. After the blowdown is completed, the second screw rod 121 is reversely rotated by operating the second hand wheel 122, the blocking block 10 is driven to slide upward, the blocking block 10 is reinserted into the small-diameter end of the blowdown pipe 9, and the blocking block 10 gradually abuts against the limiting column two 63 of the first locking part, thereby driving the limiting column two 63, the connecting strip 64 and the limiting column one 62 of the first locking part to retract into the annular fixing seat 61, so that the limiting column one 62 is separated from the valve core 7, then the first hand wheel 114 is operated to drive the valve core 7 to move upward to make the communication port 8 butt against the water inlet cavity 2, and the water passing state is restored, and at this time, the limiting column two 63 of the second locking part is reinserted into the second limiting hole 101 of the blocking block 10.

[0034] In the present application, unless otherwise clearly specified and limited, the terms such as “mounting”, “arrangement”, “connection”, “fixing”, “screw connection” and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or can be integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication or interaction relationship between two elements, unless otherwise clearly limited, the above-mentioned terms in the present application can be understood according to the specific meaning of the above-mentioned terms in the present application by those skilled in the art.

[0035] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Modifications can be made by those skilled in the art, upon reading the foregoing description, without departing from the scope of the present application, which is defined in the following claims and their equivalents.

Claims

1. A wastewater treatment plant inlet and outlet valve, comprising a valve body (1), wherein the valve body (1) is provided with an inlet chamber (2) and an outlet chamber (3), and the inlet chamber (2) is located above the outlet chamber (3), and both the inlet chamber (2) and the outlet chamber (3) are connected to an installation pipe (4), characterized in that: The outlet chamber (3) is equipped with a filter cylinder (5) with filter holes on the side wall and through at both ends. The bottom of the filter cylinder (5) is connected to a locking component (6). The filter cylinder (5) is slidably connected to a valve core (7) that is hollow inside and through at the bottom. The valve core (7) has a connecting port (8) on one side wall near the inlet chamber (2). The bottom of the valve body (1) is equipped with a drain pipe (9), which is connected to the bottom of the locking component (6). The drain pipe (9) is slidably installed with a stop block (10) inside the drain pipe (9). The lower side wall of the valve core (7) is provided with a first limiting hole (71). The side wall of the stop block (10) is provided with a second limiting hole (101), which is opposite to the first limiting hole (71). The top of the valve body (1) is equipped with a first driving component (11) that drives the valve core (7) to rise and fall and a second driving component (12) that drives the stop block (10). When the valve body (1) is in operation with water flow, the second locking member of the locking assembly (6) is inserted into the second limiting hole (101). When the valve body (1) is in operation with sewage discharge, the first locking member of the locking assembly (6) is inserted into the first limiting hole (71).

2. The inlet and outlet valve for a wastewater treatment plant according to claim 1, characterized in that: The locking assembly (6) includes an internally hollow annular fixing seat (61). The annular fixing seat (61) has a first locking member and a second locking member installed on opposite sides. The first locking member and the second locking member each include a limiting post one (62) and a limiting post two (63). One end of the limiting post one (62) and the limiting post two (63) both protrude through the inner ring of the annular fixing seat (61). A connecting strip (64) is connected between the ends of the limiting post one (62) and the limiting post two (63) located inside the annular fixing seat (61). A spring (65) is connected between the connecting strip (64) and the inner wall of the annular fixing seat (61). When the valve body (1) is in operation of water supply, the second locking post (63) of the second locking member is inserted into the second limiting hole (101). When the valve body (1) is in operation of sewage discharge, the first locking post (62) of the first locking member is inserted into the first limiting hole (71).

3. The inlet and outlet valve for a wastewater treatment plant according to claim 2, characterized in that: The valve core (7) includes a first cylinder (72) and a second cylinder (73) that are interconnected. The diameter of the second cylinder (73) is smaller than that of the first cylinder (72) and it is located below the first cylinder (72). A communication port (8) is opened on the side wall of the first cylinder (72), and the first cylinder (72) abuts against the inner wall of the filter cylinder (5). A first limiting hole (71) is opened on the side wall of the second cylinder (73). An annular brush (74) that abuts against the inner wall of the filter cylinder (5) is installed on the outer wall of the second cylinder (73), and the first limiting hole (71) is located below the annular brush (74).

4. The inlet and outlet valve for a sewage treatment plant according to claim 3, characterized in that: The inner ring of the annular fixing seat (61) has a downward inclined surface at the top.

5. The inlet and outlet valve for a sewage treatment plant according to claim 3, characterized in that: The first driving component (11) includes a first screw (111) and a nut (112) that cooperate with each other. The nut (112) is installed on the top of the inner cavity of the valve core (7). The top of the first screw (111) passes through the inner cavity of the nut (112) and is connected to a first rotating rod (113). The first rotating rod (113) and the first screw (111) are both through structures. The first rotating rod (113) passes through the top of the valve body (1) and is connected to a first handwheel (114). The second drive member (12) includes a second screw (121) that is threadedly connected to the stop (10). The top of the second screw (121) passes through the inner cavity of the first screw (111) and the first rotating rod (113) in sequence and is connected to a second handwheel (122).

6. The inlet and outlet valve for a sewage treatment plant according to claim 5, characterized in that: The first cylinder (72) and the second cylinder (73) are rotatably connected. The bottom of the first screw (111) passes through the nut (112) and is connected to the limit block (115). The bottom of the limit block (115) is connected to the telescopic rod (116), and the telescopic rod (116) is connected to the top of the second cylinder (73).

7. The inlet and outlet valve for a sewage treatment plant according to claim 5, characterized in that: The first limiting hole (71) is a strip groove extending along the axial direction of the second cylinder (73), and the angle of the strip groove is 40 degrees to 60 degrees.

8. The inlet and outlet valve for a sewage treatment plant according to claim 5, characterized in that: The drain pipe (9) is a variable diameter pipe, and the small diameter end of the drain pipe (9) is connected to the locking assembly (6). The stop block (10) is adapted to the inner wall of the small diameter end of the drain pipe (9). A fixing strip (91) is connected between the inner walls of the large diameter end of the drain pipe (9). The fixing strip (91) is slidably connected to a sliding rod (92). One end of the sliding rod (92) is connected to the bottom of the stop block (10).

9. The inlet and outlet valve for a sewage treatment plant according to claim 8, characterized in that: The top of the baffle (10) is provided with a conical drain head (102), and the bottom of the baffle (10) is connected to a scraper ring (103), and the scraper ring (103) is interference-fitted with the inner wall of the drain pipe (9).

10. A method of using the inlet and outlet valve for a wastewater treatment plant as described in any one of claims 1-9, characterized in that: Includes the following steps: When the inlet and outlet valves are in operation, the valve core (7) is driven to rise by the first driving component (11), so that the connecting port (8) is connected to the inlet chamber (2). Sewage flows into the filter cylinder (5) through the inlet chamber (2) and the connecting port (8) for filtration and is discharged from the outlet chamber (3). At this time, the baffle (10) is locked and fixed by the second locking component of the locking assembly (6). When the inlet and outlet valves are used for sewage discharge, the valve core (7) is driven down by the first driving component (11) to close the connecting port (8). At the same time, the annular brush (74) cleans the inner wall of the filter cylinder (5) so that the filter material falls off. After the valve core (7) is completely closed, the stop block (10) is driven down to the large diameter end of the sewage pipe (9) by the second driving component (12) to carry out sewage discharge. At this time, the valve core (7) is locked and fixed by the first locking component of the locking assembly (6).

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