Butterfly valve sealing performance detection device

Abstract

The utility model relates to a butterfly valve sealing performance detection device which comprises a bottom plate and a central pipe, a plurality of butterfly valve positioning pipes are arranged on the bottom plate in the circumferential direction with the axis of the central pipe as the center, a supporting ring is fixedly arranged in each butterfly valve positioning pipe, and a butterfly valve is arranged on each supporting ring. A plurality of branch water outlet pipes corresponding to the butterfly valves are arranged on the upper portion of the side wall of the center pipe in the circumferential direction, a water inlet pipe is arranged on the lower portion of the side wall of the center pipe, a water retaining ring is fixedly arranged on the bottom plate, an observation water opening is formed in the side wall of the butterfly valve positioning pipe, and a pressing ring assembly used for clamping the butterfly valves is installed on the center pipe. Firstly, a plurality of butterfly valves in a closed state are placed into the corresponding butterfly valve positioning pipes respectively, then the butterfly valves are pressed through the pressing ring assemblies, water flow is input into the center pipe through the water inlet pipe, and the water flow flows out of each branch water outlet pipe and enters the butterfly valves in the closed state; the water flow passes through the corresponding butterfly valve and is finally discharged from the observation water port, the produced butterfly valve is not qualified, the structure is simple, and the detection efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valves, and in particular to a butterfly valve sealing performance testing device. Background Technology

[0002] Due to their stable performance, butterfly valves have been widely used in various fields of social production. Under the current technological conditions, how to control the sealing quality of butterfly valves during mass production has become a focus of attention for butterfly valve manufacturers. The market urgently needs a device that can quickly test the sealing performance of butterfly valves during the production process, so as to facilitate the timely detection of quality problems in the performance of butterfly valves. However, existing butterfly valve sealing testing devices cannot test multiple butterfly valves at the same time, resulting in low testing efficiency, which urgently needs to be improved. Utility Model Content

[0003] The purpose of this invention is to provide a butterfly valve sealing performance testing device to solve the problem that existing butterfly valve sealing performance testing devices cannot test multiple butterfly valves simultaneously, resulting in low testing efficiency.

[0004] To address the aforementioned problems, this utility model provides a butterfly valve sealing performance testing device, comprising a base plate and a central tube. Multiple butterfly valve positioning tubes are circumferentially arranged on the base plate with the axis of the central tube as the center. A support ring is fixedly installed inside each butterfly valve positioning tube, and a butterfly valve is mounted on the support ring. Multiple branch outlet pipes corresponding to the butterfly valves are circumferentially arranged above the side wall of the central tube, and an inlet pipe is located below the side wall of the central tube. A water-blocking ring is fixedly installed on the base plate. An observation port is provided on the side wall of each butterfly valve positioning tube. A pressure ring assembly for clamping the butterfly valve is installed on the central tube.

[0005] The butterfly valve sealing performance testing device provided by this utility model also has the following technical features:

[0006] Furthermore, the cross-section of the observation nozzle is "L" shaped.

[0007] Furthermore, the pressure ring assembly includes a fixed ring, a movable pressure ring, and a hydraulic cylinder symmetrically fixed between the fixed ring and the movable pressure ring. The rigid end of the hydraulic cylinder is fixedly connected to the fixed ring, and the telescopic end of the hydraulic cylinder is fixedly connected to the movable pressure ring.

[0008] Furthermore, the number of butterfly valve positioning tubes is at least three.

[0009] Furthermore, the movable pressure ring includes a central ring coaxially arranged with the central tube, a connecting rod fixed to the outer wall of the central ring, and a pressure ring fixedly connected to one end of the connecting rod away from the central ring.

[0010] Furthermore, a water pump is fixedly installed on one side of the water-blocking ring, the water pump's suction pipe extends inward from the water-blocking ring, and the water pump's discharge end is connected to the water inlet pipe.

[0011] This utility model has the following advantages: First, multiple butterfly valves in the closed state are placed into the corresponding butterfly valve positioning tubes. Then, the butterfly valves are pressed by the pressure ring assembly. Water is input into the central pipe through the inlet pipe. The water flows out from each of the branch outlet pipes and enters the butterfly valves in the closed state. If the butterfly valve is not properly sealed, the water will pass through the corresponding butterfly valve and eventually be discharged from the observation port, indicating that the butterfly valve produced is unqualified. The structure is simple and the detection efficiency is high. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the butterfly valve sealing performance testing device;

[0013] Figure 2 This is a cross-sectional structural diagram of the butterfly valve sealing performance testing device. Detailed Implementation

[0014] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0015] like Figures 1 to 2 In the embodiment of the butterfly valve sealing performance testing device of this utility model shown, a base plate 1 and a central tube 2 are included. Multiple butterfly valve positioning tubes 3 are arranged circumferentially around the axis of the central tube 2 on the base plate 1. A support ring 31 is fixedly installed inside each butterfly valve positioning tube 3, and a butterfly valve 4 is installed on the support ring 31. Multiple branch water outlet pipes 20 corresponding to the butterfly valve 2 are arranged circumferentially above the side wall of the central tube 2. A water inlet pipe 21 is provided below the side wall of the central tube 2. A water baffle ring 101 is fixedly installed on the base plate 1, and an observation port is provided on the side wall of the butterfly valve positioning tube 3. 301. A pressure ring assembly 5 for clamping butterfly valves is installed on the central pipe 2. Specifically, multiple butterfly valves in the closed state are first placed into their corresponding butterfly valve positioning pipes, and then the butterfly valves are clamped by the pressure ring assembly 5. Water is input into the central pipe 2 through the inlet pipe 21. The water flows out from each branch outlet pipe 20 and enters the butterfly valve 4 in the closed state. If the butterfly valve 4 being tested is not sealed tightly, the water will pass through the corresponding butterfly valve 4 and eventually be discharged from the observation port 301, indicating that the butterfly valve 4 produced is unqualified. The structure is simple and the testing efficiency is high.

[0016] In one embodiment of this application, the cross-section of the sprue 301 is observed to be "L" shaped.

[0017] In one embodiment of this application, the pressure ring assembly 5 includes a fixed ring 51, a movable pressure ring 52, and a hydraulic cylinder 53 symmetrically fixed between the fixed ring 51 and the movable pressure ring 52. The rigid end of the hydraulic cylinder 53 is fixedly connected to the fixed ring, and the telescopic end of the hydraulic cylinder 53 is fixedly connected to the movable pressure ring 52.

[0018] In one embodiment of this application, the number of butterfly valve positioning tubes 3 is at least 3.

[0019] In one embodiment of this application, the movable pressure ring 52 includes a central ring 521 coaxially disposed with the central tube 2, a connecting rod 522 fixed to the outer wall of the central ring 521, and a pressure ring 523 fixedly connected to one end of the connecting rod 522 away from the central ring 521.

[0020] In one embodiment of this application, a water pump 6 is fixedly provided on one side of the water baffle ring 101, the water pump 6's pump pipe 61 passes through the water baffle ring 101 and extends inward, and the water pump 6's drain end is fixedly connected to the water inlet pipe 21.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A butterfly valve tightness detection device, characterized by, The application relates to a butterfly valve positioning pipe, which comprises a bottom plate and a center pipe, a plurality of butterfly valve positioning pipes are arranged on the bottom plate in a circumferential direction and centered on the axis of the center pipe, a supporting ring is fixedly arranged in each butterfly valve positioning pipe, a butterfly valve is arranged on the supporting ring, a plurality of branch water outlet pipes corresponding to the butterfly valves are arranged on the side wall of the center pipe in a circumferential direction above the center pipe, a water inlet pipe is arranged below the side wall of the center pipe, a water retaining ring is fixedly arranged on the bottom plate, an observation water outlet is arranged on the side wall of the butterfly valve positioning pipe, and a pressing ring assembly for clamping the butterfly valve is arranged on the center pipe.

2. The device for detecting the sealing performance of a butterfly valve according to claim 1, characterized in that: The cross section of the observation water outlet is L-shaped.

3. The device for detecting the sealing performance of a butterfly valve according to claim 2, characterized in that: The pressing ring assembly comprises a fixed ring, a movable pressing ring and a hydraulic cylinder symmetrically fixed between the fixed ring and the movable pressing ring, the rigid end of the hydraulic cylinder is fixedly connected with the fixed ring, and the telescopic end of the hydraulic cylinder is fixedly connected with the movable pressing ring.

4. The device for detecting the sealing performance of a butterfly valve according to claim 1, characterized in that: The number of the butterfly valve positioning pipes is at least three.

5. The device for detecting the sealing property of a butterfly valve according to claim 3, wherein: The movable pressing ring comprises a center ring coaxially arranged with the center pipe, a connecting rod fixedly arranged on the outer wall of the center ring and a pressing ring fixedly connected with one end of the connecting rod away from the center ring.

6. The device for detecting the sealing performance of a butterfly valve according to claim 1, characterized in that: One side of the water retaining ring is fixedly provided with a water pump, the water suction pipe of the water pump faces the water retaining ring and extends inward, and the water discharge end of the water pump is communicated with the water inlet pipe.

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