Backflow preventer with detection mechanism

Abstract

The utility model discloses a backflow preventer with a detection mechanism, which comprises a backflow preventer main body, the inner side of the backflow preventer main body is provided with a detection control mechanism, the detection control mechanism comprises a control bin placed in the backflow preventer main body, the upper part of the outer side of the control bin is provided with a water permeable groove, and the water permeable groove is provided with a water outlet. A baffle is slidably connected to the upper portion of the outer side of the control bin, and an underwater motor is fixedly connected to the inner wall of the control bin. According to the backflow preventer with the detection mechanism, the underwater motor is started to drive the fan blades to rotate, and the baffle synchronously rotates along with the rotating shaft, so that the baffle always repeats the operations of separating from the water permeable tank and blocking the water permeable tank; the purpose that liquid in the backflow preventer body can conveniently flow into the control bin is achieved, then the liquid can conveniently flow out of the backflow preventer body, workers can conveniently detect the flowing-out liquid in real time, and the water quality of the liquid can be conveniently controlled.

Description

Technical Field

[0001] This utility model relates to the field of backflow prevention technology, and in particular to a backflow prevention device with a detection mechanism. Background Technology

[0002] A backflow preventer is a device composed of check components used to strictly limit the unidirectional flow of pressurized water in a pipeline, preventing water contamination caused by siphon backflow or back pressure backflow. Its core function is to block the backflow of media under any operating condition. Especially in fire-fighting water supply systems, the backflow preventer is one of its important structures. When fire pumps are running or fire trucks are pressurized through pump connections, the outlet pressure may exceed the municipal water network pressure, causing high-pressure water to backflow and contaminate the municipal water source. Such backflow may carry impurities, microorganisms, or chemicals from the fire-fighting system, threatening public drinking water safety. Therefore, backflow preventers are needed to prevent backflow of fire-fighting water.

[0003] Traditional backflow preventers have some drawbacks. In actual use, because the backflow preventer directly guides the liquid flow, it is difficult for workers to monitor the liquid in the device in real time during the liquid flow process, resulting in an inability to effectively control the water quality. Utility Model Content

[0004] The main objective of this invention is to provide a backflow preventer with a detection mechanism, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A backflow preventer with a detection mechanism includes a backflow preventer body. A detection and control mechanism is disposed inside the backflow preventer body. The detection and control mechanism includes a control chamber placed inside the backflow preventer body. A water-permeable groove is formed on the upper outer side of the control chamber. A baffle is slidably connected to the upper outer side of the control chamber. An underwater motor is fixedly connected to the inner wall of the control chamber. A rotating shaft is installed at one end of the underwater motor. A turntable is fixedly connected to the outer side of the rotating shaft. A fan blade is fixedly connected to the outer side of the turntable. The rotating shaft passes through the interior of the control chamber and is movably connected to the control chamber. A connecting ring is fixedly connected to the outer side of the rotating shaft near the control chamber. A connecting rod is fixedly connected to the front end of the connecting ring. A water outlet groove is formed on the outer side of the inner wall of the control chamber near the underwater motor.

[0007] Preferably, one end of the control compartment is fixedly connected to a connecting pipe, the connecting pipe penetrates the interior of the backflow preventer body, and the connecting pipe is fixedly connected to the backflow preventer body.

[0008] Preferably, one end of the connecting pipe is fixedly connected to a discharge pipe, the outer side of the discharge pipe is threaded with a plug, and the baffle covers the outer side of the permeable trough.

[0009] Preferably, the upper end of the docking rod is fixedly connected to the lower end of the baffle, and the center lines of the control compartment, baffle, rotating shaft, turntable, and connecting ring are located on the same straight line.

[0010] Preferably, a base is fixedly connected to the lower end of the backflow preventer body, and an installation ring is fixedly connected to one end of the backflow preventer body.

[0011] Preferably, one end of the mounting ring is fixedly connected to a mounting tube, and the mounting tube corresponds to the control compartment.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By starting the underwater motor, the fan blades are rotated, and the baffle rotates synchronously with the rotating shaft. This causes the baffle to repeatedly separate from and block the permeable tank, facilitating the flow of liquid from the backflow preventer body into the control chamber. This allows the liquid to flow out of the backflow preventer body, enabling workers to monitor the outflowing liquid in real time and control its quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a backflow preventer with a detection mechanism according to this utility model. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the overall structure of a backflow preventer with a detection mechanism according to this utility model. Figure 2 ;

[0016] Figure 3 This is a schematic diagram of the detection and control mechanism of a backflow preventer with a detection mechanism according to the present invention;

[0017] Figure 4 This is a partial structural diagram of a backflow prevention device with a detection mechanism according to the present invention. Figure 1 ;

[0018] Figure 5 This is a partial structural diagram of a backflow prevention device with a detection mechanism according to the present invention. Figure 2 .

[0019] In the diagram: 1. Backflow preventer body; 2. Base; 3. Mounting ring; 4. Mounting pipe; 5. Detection and control mechanism; 51. Control chamber; 52. Water permeable trough; 53. Baffle; 54. Underwater motor; 55. Rotating shaft; 56. Turntable; 57. Fan blade; 58. Connecting ring; 59. Connecting rod; 510. Water outlet trough; 511. Connecting pipe; 512. Discharge pipe; 513. Blocking cover. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figure 1-5 As shown, a backflow preventer with a detection mechanism includes a backflow preventer body 1. A detection control mechanism 5 is provided inside the backflow preventer body 1. The detection control mechanism 5 includes a control chamber 51 placed inside the backflow preventer body 1. A water permeable groove 52 is provided on the upper outer side of the control chamber 51. A baffle 53 is slidably connected to the upper outer side of the control chamber 51. An underwater motor 54 is fixedly connected to the inner wall of the control chamber 51. A rotating shaft 55 is installed at one end of the underwater motor 54. A turntable 56 is fixedly connected to the outer side of the rotating shaft 55. A fan blade 57 is fixedly connected to the outer side of the turntable 56. The rotating shaft 55 passes through the interior of the control chamber 51 and is movably connected to the control chamber 51. A connecting ring 58 is fixedly connected to the outer side of the rotating shaft 55 near the control chamber 51. A docking rod 59 is fixedly connected to the front end of the connecting ring 58. A water outlet groove 510 is provided on the outer side of the inner wall of the control chamber 51 near the underwater motor 54.

[0022] In this embodiment, a connecting pipe 511 is fixedly connected to one end of the control chamber 51. The connecting pipe 511 penetrates the interior of the backflow preventer body 1 and is fixedly connected to the backflow preventer body 1. A discharge pipe 512 is fixedly connected to one end of the connecting pipe 511. A plug 513 is threadedly connected to the outside of the discharge pipe 512. A baffle 53 covers the outside of the permeable trough 52. The upper end of the connecting rod 59 is fixedly connected to the lower end of the baffle 53. The center lines of the control chamber 51, baffle 53, rotating shaft 55, turntable 56, and connecting ring 58 are located on the same straight line.

[0023] Specifically, if real-time liquid monitoring is required, the underwater motor 54 is first started, causing the rotating shaft 55 to rotate. This rotating shaft 54 ​​then drives the fan blades 57 to rotate via the turntable 56. Simultaneously, the rotating shaft 55 drives the baffle 53 to rotate via the connecting ring 58 and the docking rod 59. This causes the baffle 53 to repeatedly detach from and block the permeable trough 52, allowing liquid from the backflow preventer body 1 to intermittently enter the control chamber 51. The rotating fan blades 57 also agitate the liquid, causing it to flow from the outlet trough 510 into the connecting pipe 511. Finally, the blocking cover 513 is opened. This allows the liquid to flow out from the discharge pipe 512, facilitating real-time monitoring of the outflowing liquid and enabling control over its quality. By activating the underwater motor 54, the fan blade 57 rotates, and the baffle 53 rotates synchronously with the rotating shaft 55. This causes the baffle 53 to repeatedly detach from and block the permeable trough 52, thus allowing the liquid inside the backflow preventer body 1 to flow into the control chamber 51. This facilitates the outflow of the liquid from the backflow preventer body 1, enabling real-time monitoring of the outflowing liquid and control over its quality.

[0024] In this embodiment, a base 2 is fixedly connected to the lower end of the backflow preventer body 1, an installation ring 3 is fixedly connected to one end of the backflow preventer body 1, an installation pipe 4 is fixedly connected to one end of the installation ring 3, and the installation pipe 4 corresponds to the control chamber 51.

[0025] Specifically, the base 2 is fixed on the ground, so that the backflow preventer body 1 sits on the ground. Then, the water pipe is connected to the installation pipe 4, so that the water pipe is connected to the backflow preventer body 1. When the liquid in the water pipe flows through the backflow preventer body 1, the backflow preventer body 1 prevents the liquid from flowing back.

[0026] Working principle:

[0027] In use, first fix the base 2 on the ground, so that the backflow preventer body 1 sits on the ground. Then connect the water pipe to the installation pipe 4, so that the water pipe is connected to the backflow preventer body 1. When the liquid in the water pipe flows through the backflow preventer body 1, the backflow preventer body 1 prevents the liquid from flowing back. If real-time liquid detection is required, first start the underwater motor 54, so that the underwater motor 54 drives the rotating shaft 55 to rotate. Then, the rotating shaft 55 drives the fan blade 57 to rotate through the turntable 56. At the same time, the rotating shaft 55 drives the baffle 53 to rotate through the connecting ring 58 and the docking rod 59. This causes the baffle 53 to repeatedly separate from the water permeable tank 52 and block the water permeable tank 52, so that the liquid in the backflow preventer body 1 intermittently enters the control chamber 51. The rotating fan blades 57 agitate the liquid, causing it to flow from the outlet tank 510 into the connecting pipe 511. Then, the plug 513 is opened, allowing the liquid to flow out from the discharge pipe 512. This facilitates real-time monitoring of the outflowing liquid by workers, enabling them to control the water quality. By starting the underwater motor 54, the fan blades 57 rotate, and the baffle 53 rotates synchronously with the rotating shaft 55. This causes the baffle 53 to repeatedly detach from and block the permeable tank 52, facilitating the flow of liquid from the backflow preventer body 1 into the control chamber 51. This allows the liquid to flow out of the backflow preventer body 1, enabling workers to monitor the outflowing liquid in real-time and control the water quality.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A backflow preventer with a detection mechanism, comprising a backflow preventer body (1), characterized in that: A detection and control mechanism (5) is provided on the inner side of the backflow preventer body (1). The detection and control mechanism (5) includes a control chamber (51) placed inside the backflow preventer body (1). A water-permeable groove (52) is provided on the upper outer side of the control chamber (51). A baffle (53) is slidably connected to the upper outer side of the control chamber (51). An underwater motor (54) is fixedly connected to the inner wall of the control chamber (51). A rotating shaft (55) is installed at one end of the underwater motor (54). The outer side of the rotating shaft (55) is fixedly connected to the water-permeable groove (52). A turntable (56) is fixedly connected to the outside of the turntable (56), and a fan blade (57) is fixedly connected to the outside of the turntable (56). The rotating shaft (55) passes through the interior of the control chamber (51), and the rotating shaft (55) is movably connected to the control chamber (51). A connecting ring (58) is fixedly connected to the outside of the rotating shaft (55) near the control chamber (51), and a docking rod (59) is fixedly connected to the front end of the connecting ring (58). A water outlet groove (510) is opened on the inner wall of the control chamber (51) near the outside of the underwater motor (54).

2. The backflow preventer with a detection mechanism according to claim 1, characterized in that: One end of the control chamber (51) is fixedly connected to a connecting pipe (511), which penetrates the interior of the backflow preventer body (1) and is fixedly connected to the backflow preventer body (1).

3. A backflow preventer with a detection mechanism according to claim 2, characterized in that: One end of the connecting pipe (511) is fixedly connected to the discharge pipe (512), and the outer side of the discharge pipe (512) is threaded with a plug (513). The baffle (53) covers the outside of the permeable trough (52).

4. A backflow preventer with a detection mechanism according to claim 3, characterized in that: The upper end of the connecting rod (59) is fixedly connected to the lower end of the baffle (53), and the center lines of the control chamber (51), baffle (53), rotating shaft (55), turntable (56), and connecting ring (58) are located on the same straight line.

5. A backflow preventer with a detection mechanism according to claim 1, characterized in that: The lower end of the backflow preventer body (1) is fixedly connected to a base (2), and one end of the backflow preventer body (1) is fixedly connected to an installation ring (3).

6. A backflow preventer with a detection mechanism according to claim 5, characterized in that: One end of the mounting ring (3) is fixedly connected to the mounting tube (4), and the mounting tube (4) corresponds to the control compartment (51).

Images