A non-return device for water treatment

Abstract

The present invention provides a non-return device for water treatment, which relates to the technical field of water treatment equipment, including: an inlet elbow, a branch pipe, an outlet pipe, a non-return head, a status monitoring seat, a non-return top rod, a first non-return disc, a second non-return disc, a first retaining ring and a second retaining ring; the inlet elbow is a right-angle elbow structure, and one end of the inlet elbow is connected to the external water supply end pipe through a flange. The synergistic effect of the first non-return disc and the second non-return disc in the present invention constructs a double sealing mechanism, which can quickly respond and effectively prevent the backflow of water regardless of whether it is facing a large amount of water backflow or a small amount of water backflow, ensuring the unidirectional flow of water. At the same time, the trigger plate and the retaining ring on the status monitoring seat monitor the position status of the non-return disc in real time, providing intuitive and accurate information feedback for the operator, facilitating timely discovery and handling of problems, and preventing the risk of water pollution caused by long-term backflow.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment equipment, and in particular to a non-return device for water treatment. Background Art

[0002] In the past water treatment systems, check valves were key components to prevent water backflow, and their performance was directly related to the stability of the entire system and the safety of water quality. However, traditional check valve designs often rely on a single sealing mechanism, such as a simple flap structure or a spring-loaded disc, which are incapable of handling complex and changing water flow conditions.

[0003] Especially in the case of large water backflow, the traditional check valve may not be able to close quickly and effectively due to the excessive impact of the water flow, resulting in water backflow, which not only affects the normal operation of the system, but also may cause damage to downstream equipment. On the other hand, for the case of a small amount of water backflow, the traditional check valve may not be able to respond in time due to insufficient sensitivity, and long-term small-flow backflow also poses the risk of water pollution.

[0004] In addition, traditional check valves lack effective real-time monitoring and feedback mechanisms during operation. Operators often find it difficult to intuitively and accurately understand the working status of the check valves, and are unable to discover and deal with potential problems in a timely manner. This information asymmetry not only increases the difficulty of system maintenance, but also increases the risks caused by untimely intervention. Summary of the invention

[0005] The present invention relates to a non-return device for water treatment, the core of which lies in the synergistic effect of a first non-return disk and a second non-return disk. The design of this double sealing mechanism enables the device to respond quickly and effectively prevent the backflow of water when facing a large amount of water backflow or a small amount of water backflow, thereby ensuring the unidirectional flow of water. At the same time, the trigger plate and the stop ring on the status monitoring seat monitor the position status of the non-return disk in real time, providing intuitive and accurate information feedback to the operator. This real-time monitoring and feedback mechanism not only simplifies the operating process, but also improves the automation and intelligence level of the device, allowing the operator to discover and deal with problems in a timely manner, effectively preventing the risk of water pollution that may be caused by long-term backflow.

[0006] The present invention provides a non-return device for water treatment, which specifically comprises: an inlet elbow, a branch pipe, an outlet pipe, a non-return head, a state monitoring seat, a non-return top rod, a first non-return disk, a second non-return disk, a first retaining ring and a second retaining ring; the inlet elbow is a right-angle elbow structure, one end of the inlet elbow is connected to an external water supply end pipe through a flange, and the other end of the inlet elbow is fixedly connected to a T-shaped outlet pipe through a flange; a water outlet pipe is fixedly connected to a pipe opening on one side of the outlet pipe; the upper end of the outlet pipe is sealed and connected to a non-return head through a flange; the middle part of the upper end of the non-return head is vertically connected to a vertical state monitoring seat, and the bottom of the state monitoring seat is connected to a T-shaped outlet pipe through two gantry-shaped pipes. The support rod is supported on the upper end surface of the check head; a check top rod is vertically slidably penetrated on the check head below the status monitoring seat, and one end of the check top rod is located in the inner cavity of the branch pipe and is downwardly connected to a first check disk; a second check disk is provided below the first check disk, and the second check disk is vertically slidably placed at the joint between the lower end of the inner cavity of the branch pipe and the water inlet elbow; a first baffle ring is annularly embedded in the position of the branch pipe corresponding to the first check disk, and the first check disk is sealed and engaged with the first baffle ring from top to bottom; a second inverted cone-shaped baffle ring is fixedly embedded in the position corresponding to the second check disk where the lower end of the inner cavity of the branch pipe is connected to the water inlet elbow, and the second check disk is sealed and engaged with the second baffle ring from top to bottom.

[0007] Optionally, a composite cleaning plug is screwed downwardly at a position of the right-angle bend of the water inlet bend pipe vertically corresponding to the center of the vertical pipe section, and an electronic flow sensor is provided at the inner end of the composite cleaning plug.

[0008] Optionally, the part of the check head in the inner cavity of the branch pipe is a truncated cone-shaped internal pressure head that is wide at the top and narrow at the bottom, and is used to buffer and disperse the impact pressure from the other end of the inner cavity of the branch pipe.

[0009] Optionally, a control box is provided at the upper end of the state monitoring seat, and a trigger sheet is hung on the bottom plane of the state monitoring seat. After the trigger sheet is squeezed from bottom to top, a signal is sent to the processor in the control box for monitoring and processing; A stop ring is fixedly provided at a spaced position below the trigger sheet, and a pressure sensing sheet is also provided at the bottom of the stop ring for monitoring the position state of the first check disk. The stop ring is used to stop the limit check push rod from moving upward excessively.

[0010] Optionally, a non-return sealing disk is fixedly provided at the lower end of the non-return ejector rod, the edge of the non-return sealing disk is tangent to the inner wall of the upper half of the inner cavity of the branch pipe in a sliding manner, and a first spring is sleeved on the non-return ejector rod above the non-return sealing disk, and the upper end of the first spring abuts against the lower end of the inner pressure head; The side wall of the check rod near the upper end is evenly spaced vertically with scale bars for measuring the displacement distance of the check rod and determining the opening amplitude; A screw joint is connected downwardly at the bottom of the non-return sealing disk, and an external thread is arranged on the outer wall of the screw joint.

[0011] Optionally, a threaded sleeve is butt-jointed to the upper end of the first check disc, and the threaded sleeve is threadedly connected to the threaded joint; A lower extension column is vertically fixed on the lower end of the first non-return disk.

[0012] Optionally, a top extension column is fixedly provided on the top of the second non-return disk, an inner guide rod is fixedly provided vertically upwardly in the middle of the top extension column, the inner guide rod passes upwardly through the middle of the lower extension column, the first non-return disk and the middle of the non-return top rod, and the upper end of the inner guide rod vertically corresponds to the trigger plate, which is used to monitor the upper and lower position states of the first non-return disk; A second spring is sleeved on the inner guide rod between the lower extension column and the upper extension column; A bottom guide rod is fixed vertically downward at the bottom of the second non-return disk, and the bottom guide rod passes downward through the second baffle ring.

[0013] Optionally, the lower end of the second baffle ring is a conical flow-breaking frame, and the end of the bottom guide rod passes through the lower end of the flow-breaking frame; Four vertical water diversion holes are distributed in an annular manner on the second retaining ring.

[0014] The present invention provides a water treatment check device, which has the following beneficial effects: First of all, the built-in composite cleaning plug and its electronic flow sensor not only monitor the flow and cleanliness of the water in real time to ensure stable water quality, but also provide a scientific basis for the regular maintenance of the device, greatly reducing maintenance costs and difficulties. This design reflects the strict control of water quality safety and the forward-looking maintenance concept.

[0015] Secondly, the setting of the truncated cone-shaped internal pressure head effectively buffers the impact of water flow, protects the internal structure of the device from damage, and prolongs its service life. This innovative buffering mechanism enables the device to maintain stable operation when facing complex and changeable water flow conditions, reduces the failure rate, and improves the reliability of the overall system.

[0016] Furthermore, the synergy of the first check disc and the second check disc builds a double sealing mechanism, which can respond quickly and effectively prevent the backflow of water, regardless of whether it is a large amount of water backflow or a small amount of water backflow, ensuring the one-way flow of water. At the same time, the trigger plate and stop ring on the status monitoring seat monitor the position of the check disc in real time, providing operators with intuitive and accurate information feedback, facilitating timely detection and handling of problems, and preventing the risk of water contamination caused by long-term backflow.

[0017] In addition, the device is also designed with an ingenious reset mechanism. When the water flow stops or flows backwards, the spring can automatically push the check rod and the second check disc to reset, preparing for the next positive water flow. This design not only simplifies the operation process, but also improves the device's automation level and ability to adapt to different water flow conditions.

[0018] Finally, the setting of the conical flow-breaking frame and water-dividing hole further enhances the buffering and diversion capacity of the device. The flow-breaking frame effectively disperses the impact pressure at the water inlet elbow, while the water-dividing hole promotes the uniform distribution of water flow, improving the overall performance and stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0020] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0021] In the attached picture: Figure 1 A schematic diagram of the first axial view of the present invention is shown; Figure 2 A second axial structural schematic diagram of the present invention is shown; Figure 3 It shows a schematic diagram of the axial structure of the present invention in a half-cut apart state; Figure 4 The present invention shows Figure 3 A is a schematic diagram of the structure of the enlarged part; Figure 5 A schematic diagram of a half-section front view of the shell structure of the present invention is shown; Figure 6 It shows a schematic diagram of the axial structure of the connected state of the present invention; Figure 7 A schematic diagram of the axial structure of the non-return ejector rod, the first non-return disk and the second non-return disk of the present invention is shown; Figure 8 It shows a schematic structural diagram of the non-return ejector rod, the first non-return disk and the second non-return disk in a partially separated state in an axial view; Fig. 9 It shows a schematic diagram of the axial structure of the branch pipe, the first retaining ring and the second retaining ring of the present invention; Fig.10 A schematic diagram of the axial structure of the second retaining ring portion of the present invention is shown.

[0022] Description of Reference Numerals 1. Water inlet elbow; 101. Composite cleaning plug; 2. Take over the branch; 3. Water outlet pipe; 4. Check head; 401. Internal pressure head; 5. Status monitoring seat; 501. Control box; 502. Trigger sheet; 503. Stop ring; 6. Check rod; 601. Check sealing disk; 602. First spring; 603. Scale bar; 604. Screw joint; 7. first check disc; 701. threaded sleeve; 702. lower extension column; 8. Second check disk; 801. Top extension column; 802. Bottom guide rod; 803. Inner guide rod; 804. Second spring; 9. First retaining ring; 10. Second baffle ring; 1001. Flow-breaking frame; 1002. Water diversion hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0024] Please refer to Figures 1 to 10 : The present invention proposes a non-return device for water treatment, comprising: an inlet elbow 1, a branch pipe 2, an outlet pipe 3, a non-return head 4, a state monitoring seat 5, a non-return top rod 6, a first non-return disk 7, a second non-return disk 8, a first retaining ring 9 and a second retaining ring 10; the inlet elbow 1 is a right-angle elbow structure, one end of the inlet elbow 1 is connected to an external water supply end pipe through a flange, and the other end of the inlet elbow 1 is fixedly connected to a T-shaped outlet pipe 3 through a flange; the outlet pipe 3 is fixedly connected to the outlet pipe 3 at one side of the pipe opening; the upper end of the outlet pipe 3 is sealed and connected to the non-return head 4 through a flange; the middle part of the upper end of the non-return head 4 is vertically connected to a vertical state monitoring seat 5, and the bottom of the state monitoring seat 5 is connected by two gantry-shaped support rods. Supported on the upper end surface of the check head 4; a check rod 6 is vertically slidably penetrated on the check head 4 below the status monitoring seat 5, and one end of the check rod 6 located in the inner cavity of the branch pipe 2 is downwardly connected to a first check disk 7; a second check disk 8 is provided below the first check disk 7, and the second check disk 8 is vertically slidably placed at the junction of the lower end of the inner cavity of the branch pipe 2 and the water inlet elbow 1; a first baffle ring 9 is annularly embedded at a position corresponding to the first check disk 7 in the branch pipe 2, and the first check disk 7 is sealed and engaged with the first baffle ring 9 from top to bottom; a second inverted cone-shaped second baffle ring 10 is fixedly embedded at a position corresponding to the second check disk 8 at the junction of the lower end of the inner cavity of the branch pipe 2 and the water inlet elbow 1, and the second check disk 8 is sealed and engaged with the second baffle ring 10 from top to bottom.

[0025] Among them, a composite clean plug 101 is screwed downward at the right angle bend of the water inlet bend 1 at the position corresponding to the center of the vertical pipe section, and an electronic flow sensor is arranged at the inner end of the composite clean plug 101. The composite clean plug 101 screwed at the right angle bend of the water inlet bend 1 and the electronic flow sensor inside are used to monitor the flow rate and cleanliness of the water flow. This design not only helps to ensure the stability of water quality, but also provides convenience for the maintenance and maintenance of the device.

[0026] The part of the check head 4 in the inner cavity of the branch pipe 2 is a truncated cone-shaped internal pressure head 401 which is wide at the top and narrow at the bottom, and is used to buffer and disperse the impact pressure from the other end of the inner cavity of the branch pipe 2.

[0027] Among them, a control box 501 is provided at the upper end of the state monitoring seat 5, and a trigger sheet 502 is hung on the bottom plane of the state monitoring seat 5. After the trigger sheet 502 is squeezed from bottom to top, a signal is sent to the processor in the control box 501 for monitoring and processing; A stop ring 503 is fixedly provided at a position spaced below the trigger plate 502. A pressure sensing sheet is also provided at the bottom of the stop ring 503 to monitor the position status of the first check disk 7. The stop ring 503 is used to stop the excessive upward movement of the limit check rod 6. In terms of status monitoring, the trigger plate 502 and the stop ring 503 on the status monitoring seat 5 play a key role. When the first check disk 7 moves downward, it will push the trigger plate 502 to move upward and send a signal to the processor in the control box 501 for monitoring and processing. This design allows the operator to understand the working status of the device in real time. At the same time, the pressure sensing sheet at the bottom of the stop ring 503 is also used to monitor the position status of the first check disk 7, and provide additional protection to prevent the check rod 6 from moving upward excessively when necessary.

[0028] Among them, a check sealing disk 601 is fixed at the lower end of the check pin 6, and the edge of the check sealing disk 601 is tangent to the inner wall of the upper half of the inner cavity of the branch pipe 2 in a sliding manner. A first spring 602 is mounted on the check pin 6 above the check sealing disk 601, and the upper end of the first spring 602 is against the lower end of the internal pressure head 401; scale bars 603 are evenly spaced vertically on the side wall near the upper end of the check pin 6, which are used to measure the displacement distance of the check pin 6 and determine the opening amplitude. In the process of the check pin 6 moving downward, the scale bar 603 at its upper end will move downward accordingly. By observing these scale bars 603, the displacement distance of the check pin 6 can be intuitively determined, thereby understanding the opening amplitude of the device. In addition, the first spring 602 on the non-return ejector rod 6 is always in a compressed state, so as to provide a downward sealing force for the non-return ejector rod 6; a screw joint 604 is connected downwardly to the bottom of the non-return sealing disk 601, and an external thread is provided on the outer wall of the screw joint 604; a screw sleeve 701 is connected to the upper end of the first non-return disk 7, and the screw sleeve 701 is screwed to the screw joint 604 to facilitate disassembly and replacement; a top extension column 801 is fixedly provided on the top of the second non-return disk 8, and an inner guide rod 803 is fixedly provided in the middle of the top extension column 801 vertically upward, and the inner guide rod 803 passes upward through the middle of the lower extension column 702, the first non-return disk 7 and the middle of the non-return ejector rod 6, and the upper end of the inner guide rod 803 vertically corresponds to the trigger plate 502, and the trigger plate 502 is used to monitor the upper and lower position states of the first non-return disk 7; Under normal water flow conditions, water flows from bottom to top, pushing the first check disc 7 and the second check disc 8 to slide upward along the inner wall of the branch pipe 2. The first check disc 7 and the second check disc 8 are separated from the first baffle ring 9 and the second baffle ring 10, and water flows smoothly. When a large amount of water flows back, as the water flows back further downward, it pushes the first check disc 7 and the second check disc 8 to slide along the inner wall of the branch pipe 2. Above the first check disc 7, the check top rod 6 moves downward under the pressure of the water flow, and at the same time drives the first check disc 7 screwed thereto to move downward. In this process, the first check disc 7 and the first baffle ring 9 fit tightly together to form a seal to prevent the water from flowing back. At the same time, the second check disc 8 also slides downward along the bottom guide rod 802 under the push of the water flow until it fits tightly with the second baffle ring 10, further enhancing the check effect; When a small amount of water reflux occurs, that is, a part of the water flows normally, while the other part will reflux, the refluxed water will pass through the gap between the first check disk 7 and the first baffle ring 9 (due to the small amount of reflux, the first check disk 7 is not forced to move down for sealing, and the reflux layer is at the bottom of the first check disk 7), and the refluxed water enters the lumen of the branch pipe 2 of the vertical section between the first check disk 7 and the second check disk 8. The refluxed water will inevitably press the second check disk 8 downward from top to bottom until it is tightly fitted with the second baffle ring 10 and the water flow is intercepted in the branch pipe 2. At this time, the first check disk 7 will also be sealed and intercepted by the downward pressure, thereby achieving a double sealing effect, and the downward movement of the first check disk 7 and the second check disk 8 are both under monitoring, so that the management personnel can also discover and deal with the reflux problem in time, avoiding the problem of being unable to prevent the reflux due to being in the reflux state for a long time, thereby causing water pollution; A lower extension column 702 is vertically fixed at the lower end of the first non-return plate 7, and a second spring 804 is mounted on the inner guide rod 803 between the lower extension column 702 and the top extension column 801, so as to provide a movable margin for the connection between the first non-return plate 7 and the second non-return plate 8, so as to avoid the situation that the second non-return plate 8 cannot be stopped when the first non-return plate 7 cannot be stopped; When the water flows backward, the reset force of the first spring 602 will push the check rod 6 and the first check disc 7 downward, so that the two remain sealed with their respective baffle rings, thereby preventing the water from flowing in the opposite direction. At the same time, the second spring 804 also pushes the second check disc 8 downward to reset, ensuring that the second check disc 8 is also in a sealed state, preventing water from flowing back, and ensuring that the device can work normally when the water flows forward next time; A bottom guide rod 802 is fixed vertically downward at the bottom of the second non-return disk 8 , and the bottom guide rod 802 passes through the second retaining ring 10 downward.

[0029] Embodiment 2 On the basis of Example 1, the lower end of the second baffle ring 10 is a conical flow-breaking frame 1001, and the end of the bottom guide rod 802 passes through the lower end of the flow-breaking frame 1001. When external water enters the device through the water inlet bend 1, the water flow first hits the flow-breaking frame 1001. This design effectively buffers and disperses the impact pressure from the water inlet bend 1, and protects the stability of the internal structure of the device; four vertical water diversion holes 1002 are distributed in a ring on the second baffle ring 10.

[0030] The working principle of this embodiment: First, when external water enters the device through the water inlet elbow 1, the water flow first encounters the right-angle elbow design. This structure not only guides the direction of the water flow, but also realizes the preliminary monitoring of water quality and real-time recording of flow through the composite clean plug 101 and electronic flow sensor inside it. The design of the composite clean plug 101 is easy to maintain and clean, while the electronic flow sensor provides key data on the water flow status, providing a basis for subsequent operations.

[0031] Then, the water flows into the T-shaped outlet pipe 3, and its direction is controlled by the flange-sealed check head 4 at its upper part. The truncated cone-shaped internal pressure head 401 inside the check head 4 effectively buffers the impact pressure from the inner cavity of the branch pipe 2, protecting the integrity of the internal structure of the device.

[0032] In terms of the realization of the check function, the core of the device lies in the synergy between the first check disc 7 and the second check disc 8. Under normal water flow conditions, water flows from bottom to top, pushing the first check disc 7 and the second check disc 8 to slide upward along the inner wall of the branch pipe 2, separating from their respective baffle rings (the first baffle ring 9 and the second baffle ring 10), allowing the water flow to pass smoothly. When encountering a large amount of water backflow, the water flow pressure forces the first check disc 7 to move downward through the check rod 6, tightly fitting with the first baffle ring 9 to form a seal, and at the same time, the second check disc 8 is also fitted with the second baffle ring 10 under the push of the water flow, and the double sealing mechanism effectively prevents the backflow of water.

[0033] The device also performs well in the case of a small amount of water backflow. The backflow water first enters the space between the first check disk 7 and the second check disk 8 through the small gap between the first check disk 7 and the first baffle ring 9, and then forces the second check disk 8 to move down and fit with the second baffle ring 10. At the same time, the first check disk 7 is also subjected to downward pressure to form a seal, achieving double protection. During this process, the trigger plate 502 and the baffle ring 503 on the status monitoring seat 5 monitor the position status of the first check disk 7 in real time to ensure that the management personnel can promptly discover and deal with the backflow problem.

[0034] In addition, the device is also designed with a reset mechanism. When the water flow stops or flows backward, the first spring 602 and the second spring 804 push the check rod 6 and the second check disc 8 to reset upward respectively, so that the two and their respective baffle rings are out of the sealed state, ready for the next forward water flow. This design not only ensures the continuous working ability of the device, but also improves its ability to adapt to different water flow conditions.

[0035] Finally, the conical flow-breaking frame 1001 and the water-dividing hole 1002 on the second baffle ring 10 further enhance the buffering and diversion capabilities of the device. The flow-breaking frame 1001 effectively disperses the impact pressure at the water inlet elbow 1, while the water-dividing hole 1002 promotes the uniform distribution of water flow and improves the overall performance of the device.

[0036] In this article, there are a few points to note: 1. The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention, and other structures can refer to the general design.

[0037] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0038] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A water treatment check device, characterized in that: include: A water inlet elbow (1), the water inlet elbow (1) being a right-angle elbow structure, one end of which is connected to an external water supply pipe via a flange, and the other end of which is fixedly connected to a T-shaped water outlet pipe (3) via a flange; a composite clean plug (101) is screwed downwardly at a position of the right-angle elbow of the water inlet elbow (1) corresponding vertically to the center of the vertical pipe section, and an electronic flow sensor is provided at the inner end of the composite clean plug (101); A branch pipe (2), the branch pipe (2) being fixedly connected to the water outlet pipe (3), and having an inner cavity for water to flow through; A water outlet pipe (3), wherein the outlet of the water outlet pipe (3) is fixedly connected to another water outlet pipe (3) at one end thereof, and the upper end thereof is connected to a non-return seal (4) via a flange seal; A check head (4), wherein a vertical state monitoring seat (5) is vertically connected to the middle of the upper end of the check head (4), and the bottom of the state monitoring seat (5) is supported on the upper end surface of the check head (4) by two support rods in the form of a gantry; the portion of the check head (4) in the inner cavity of the branch pipe (2) is a truncated cone-shaped internal pressure head (401) that is wide at the top and narrow at the bottom; A state monitoring seat (5), wherein a control box (501) is provided at the upper end of the state monitoring seat (5), and a trigger sheet (502) is mounted on the bottom plane, and the trigger sheet (502) is pressed from bottom to top and then sends a signal to a processor in the control box (501) for monitoring and processing; a stop ring (503) is fixedly provided at a spaced position below the trigger sheet (502); a check rod (6), the check rod (6) vertically slidingly penetrating a check head (4) provided below the status monitoring seat (5), one end of which is located in the inner cavity of the branch pipe (2) and downwardly connected to a first check disc (7); a first spring (602) is sleeved on the check rod (6); A first check disc (7), the upper end of the first check disc (7) being connected to the check rod (6); A second check disk (8), the second check disk (8) being vertically slidably disposed at a position where the lower end of the inner cavity of the branch pipe (2) and the water inlet elbow (1) meet; A first retaining ring (9), the first retaining ring (9) being annularly embedded in a position corresponding to the first non-return disk (7) in the branch pipe (2), the first non-return disk (7) being sealingly embedded with the first retaining ring (9) from top to bottom; A second baffle ring (10) is fixedly embedded in a position corresponding to the second check disc (8) at the junction of the lower end of the inner cavity of the branch pipe (2) and the water inlet elbow (1), and the second check disc (8) is sealed and embedded with the second baffle ring (10) from top to bottom.

2. A water treatment check device according to claim 1, characterized in that: The composite cleaning plug (101) and the electronic flow sensor therein are used to monitor the flow rate and cleanliness of the water flow.

3. A water treatment check device according to claim 1, characterized in that: The truncated cone-shaped internal pressure head (401) of the non-return sealing head (4) is used to buffer and disperse the impact pressure from the other end of the inner cavity of the branch pipe (2).

4. A water treatment check device according to claim 1, characterized in that: The trigger plate (502) and the stop ring (503) are used to monitor the position state of the first non-return disk (7), and a pressure sensing sheet is also provided at the bottom of the stop ring (503) to provide additional protection to prevent the non-return ejector rod (6) from excessively moving upward.

5. A water treatment check device according to claim 1, characterized in that: A non-return sealing disk (601) is fixedly provided at the lower end of the non-return ejector rod (6), and the edge of the non-return sealing disk (601) is tangentially slidably connected to the inner wall of the upper half of the inner cavity of the branch pipe (2); the upper end of a first spring (602) sleeved on the non-return ejector rod (6) above the non-return sealing disk (601) abuts against the lower end of the internal pressure head (401) to provide a downward sealing force for the non-return ejector rod (6); and a scale bar (603) is provided on the side wall of the non-return ejector rod (6) near the upper end, for measuring the displacement distance of the non-return ejector rod (6).

6. A water treatment non-return device according to claim 1, characterized in that: A lower extension column (702) is vertically fixed to the lower end of the first non-return disk (7), a top extension column (801) is fixed to the top of the second non-return disk (8), an inner guide rod (803) is vertically fixed to the middle of the top extension column (801), the inner guide rod (803) passes upward through the middle of the lower extension column (702), the first non-return disk (7) and the middle of the non-return top rod (6), and the upper end of the inner guide rod (803) corresponds vertically to the trigger plate (502).

7. A water treatment non-return device according to claim 6, characterized in that: A second spring (804) is sleeved on the inner guide rod (803) between the lower extension column (702) and the upper extension column (801) to provide a movable margin for the connection between the first check disc (7) and the second check disc (8).

8. A water treatment check device according to claim 1, characterized in that: A bottom guide rod (802) is fixed vertically downward at the bottom of the second non-return disk (8), and the bottom guide rod (802) passes downward through the second retaining ring (10).

9. A water treatment non-return device according to claim 8, characterized in that: The lower end of the second baffle ring (10) is a conical flow-breaking frame (1001), and the end of the bottom guide rod (802) passes through the lower end of the flow-breaking frame (1001); and four vertical water-dividing holes (1002) are distributed in an annular manner on the second baffle ring (10).

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