CN219773158U - A siphon drainage and backflow prevention mechanism - Google Patents

Abstract

The utility model discloses a siphon drainage anti-backflow mechanism, which includes a shell. A check mechanism is installed on the inner top of the shell. The check mechanism includes an installation sleeve. The top of the installation sleeve is fixedly connected to the shell. The bottom end of the installation sleeve is symmetrically and fixedly connected to a shrinking rod. The outer wall of the shrinking rod is sleeved with a first contraction spring. The bottom end of the shrinking rod is fixedly connected to a first movable plate. The first movable plate The bottom end of the plate is symmetrically and fixedly connected to a connecting column, and the bottom end of the connecting column is fixedly connected to a second movable plate. There are sealing pads attached to both sides of the bottom end of the second movable plate, and the sealing pad is fixedly connected to On both sides of the inner shell, backup transmission is carried out through the check assembly connecting pipe. Therefore, when there is too much water on the roof and the check mechanism is damaged, it is inconvenient for the staff to repair the check mechanism, so the backup transmission effect brings benefits to the staff. Many benefits.

Description

A siphon drainage and backflow prevention mechanism

Technical field

The utility model relates to the technical field of check valves, and in particular to a siphon drainage and backflow prevention mechanism.

Background technique

Siphon backflow is the backflow caused by the pressure drop at the water supply end of the water supply system or the generation of negative pressure vacuum or partial vacuum. For example, the water supply is interrupted due to fire fighting, pipe bursting, or repair in the nearby pipe network. Backpressure backflow is caused by the downstream pressure of the water supply system. Changes, the water pressure at the water end is higher than the water pressure at the water supply end, and backflow caused by greater than the upstream pressure may occur in hot water or pressure water supply systems. In order to prevent backflow, a check valve is generally installed. Check valve installation At the near end of the water pump outlet, making the water pipe at the water tank end higher than the water tank can solve the siphon phenomenon of the water pump, because the water pump has low pressure and high pressure areas. When it goes from the low pressure area to the high pressure area, it will travel through the centrifugal vacuum water ring, causing siphonage.

A Chinese patent discloses a water conservancy check valve (publication number: CN212389806U). The device is connected by partitions on both sides of the inner wall of the check valve through a rotating shaft, and cooperates with the fixed sleeve, movable plate and installation plate of the control device. , the reset chamber, the first sealing ring, the piston push rod and the return spring can effectively improve the sealing performance of the water conservancy check valve, making the water conservancy check valve more closed when closed, which can effectively prevent the water conservancy check valve from returning The medium inside the valve flows back, weakening the hydraulic impact and improving the overall performance of the hydraulic check valve.

This device can effectively improve the sealing performance of the water conservancy check valve through the connection between the fixed sleeve, the movable plate, the installation plate, the reset chamber, the first sealing ring, the piston push rod and the return spring, so that the water conservancy check valve can be closed when it is closed. The sealing property is stronger and can effectively prevent the backflow of the medium inside the water conservancy check valve. However, the device is not equipped with emergency measures. When the internal parts of the check valve are impacted by the water flow for a long time, the parts may be damaged, resulting in the partition not being tightly closed. and looseness, resulting in poor check effect, excessive water accumulation at the water source, and inconvenience to people. The valve must be closed to repair the check valve, which brings inconvenience to people when using it.

Utility model content

The technical problems to be solved by this utility model are as follows:

The device is not equipped with first aid measures. When the internal parts of the check valve are impacted by water flow for a long time, the parts may be damaged, causing the partition to be laxly closed and loose, resulting in poor check effect and excessive water accumulation at the water source. It brings inconvenience to people, and the valve must be closed to repair the check valve, which brings inconvenience to people when using it.

The purpose of this utility model can be achieved through the following technical solutions:

A siphon drainage anti-backflow mechanism includes a shell. A check mechanism is installed on the inner top of the shell. The check mechanism includes a mounting sleeve. The top of the mounting sleeve is fixedly connected to the shell. The mounting sleeve is fixedly connected to the shell. A contraction rod is symmetrically and fixedly connected to the bottom end. A first contraction spring is sleeved on the outer wall of the contraction rod. A first movable plate is fixedly connected to the bottom end of the contraction rod. The bottom end of the first movable plate is symmetrically connected. A connecting column is fixedly connected, and a second movable plate is fixedly connected to the bottom end of the connecting column. There are sealing gaskets attached to both sides of the bottom end of the second movable plate. The sealing gasket is fixedly connected to both sides of the interior of the shell. , one end of the second movable plate is slidingly connected to the limit rod, the upper and lower ends of the limit rod are fixedly connected to the shell and the sealing gasket, and the end of the second movable plate away from the limit rod is fixedly connected to a sliding block , a sliding groove is provided on the inner side of the housing, and the sliding block and the sliding groove are slidingly connected.

Further, a non-return component is installed inside the bottom end of the housing. The non-return component includes a connecting pipe. The top end of the connecting pipe is fixedly connected through the housing. A mounting box is installed inside the connecting pipe. The installation box Installation slots are provided inside the upper and lower sides of the box. Installation blocks are fixedly connected to both sides of the installation box. A slide block is slidingly connected to the inside of the installation block. The bottom end of the slide block is connected to the inner bottom of the installation block. A second contraction spring is fixedly connected to the end, a connecting plate is fixedly connected between the slide blocks, a blocking block is fixedly connected to the top of the connecting plate, and the top of the blocking block is connected to the installation groove.

Further, a fixing piece is fixedly connected between the installation box and the connecting pipe.

Further, a baffle is slidably connected to the top of the connecting pipe, one end of the baffle is rotatably connected to a threaded rod, and the end of the threaded rod away from the baffle is threaded through the housing.

Further, water inlet pipes and water outlet pipes are installed at both ends of the housing.

Further, a filter is connected to the inside of the water inlet pipe in an inclined and sliding manner, a first fixing block is fixedly connected to the top of the filter, a second fixing block is installed on one side of the first fixing block, and the second fixing block is installed on one side of the first fixing block. The bottom end of the fixed block is fixedly connected to the top end of the water inlet pipe, and the internal parts of the first fixed block and the second fixed block are threadedly connected with fixing knobs.

Further, a valve is installed inside the water outlet pipe.

Beneficial effects of this utility model:

The second movable plate is squeezed upward by the water flow, thereby driving the second movable plate to move on the limit rod, and at the same time driving the sliding block to slide inside the sliding groove, so that the second movable plate drives the connecting column to squeeze upward, and passes through the limit rod. The design of the sliding block and sliding groove makes the movement of the second movable plate more stable and avoids the shaking of the second movable plate caused by the impact of water flow. The movement of the connecting column drives the first movable plate to squeeze the contraction rod and the first contraction spring. , thereby completing the non-return effect. When the second movable plate is impacted by water flow for a long time, the second movable plate will be damaged, and the first contraction spring frequently contracts in the water for a long time, resulting in a deterioration of the contraction effect, causing the second movable plate to seal There is a large gap between the pads, and backup transmission is performed through the connecting pipe of the check assembly. Therefore, when there is too much water on the roof and the check mechanism is damaged, it is inconvenient for the staff to repair the check mechanism, so that the effect of backup transmission is given to the staff. Brings many benefits.

The baffle is driven away from the connecting pipe by rotating the threaded rod. At this time, the water flows downward into the inside of the connecting pipe. The water flow impacts the blocking block so that the top of the blocking block is away from the installation groove. At this time, the slider moves downward inside the installation block and presses against the second contraction spring. Squeeze, so that the water flows through the installation groove to the bottom of the connecting pipe to achieve a check-back effect, which brings convenience to people when using it.

Description of the drawings

The utility model will be further described below in conjunction with the accompanying drawings.

Figure 1 is a schematic diagram of the overall structure of the utility model;

Figure 2 is a schematic diagram of the overall structure of the non-return component of the utility model;

Figure 3 is a schematic diagram of the overall structure of the filter in the utility model;

Figure 4 is an enlarged structural schematic diagram of part A of the present utility model.

In the picture: 1. Shell; 101. Water inlet pipe; 102. Water outlet pipe; 103. Valve; 2. Check mechanism; 201. Installation sleeve; 202. Shrinking rod; 203. First shrinking spring; 204. First movable plate ; 205. Connecting column; 206. Sealing gasket; 207. Second movable plate; 208. Limiting rod; 209. Sliding groove; 210. Sliding block; 3. Non-return component; 301. Connecting pipe; 302. Installation box; 303. Installation groove; 304. Installation block; 305. Slider; 306. Second contraction spring; 307. Connecting plate; 308. Blocking block; 309. Fixing piece; 310. Baffle; 311. Threaded rod; 4. Filter Net; 401, first fixed block; 402, second fixed block; 403, fixed knob.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all implementations. example. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

As shown in Figure 1-4, a siphon drainage anti-backflow mechanism includes a shell 1. An inlet pipe 101 and a water outlet pipe 102 are installed at both ends of the shell 1. A valve 103 is installed inside the outlet pipe 102. The inner top of the shell 1 A non-return mechanism 2 is installed. The non-return mechanism 2 includes an installation sleeve 201. The top end of the installation sleeve 201 is fixedly connected to the shell 1. The bottom end of the installation sleeve 201 is symmetrically and fixedly connected to a shrink rod 202. The outer wall of the shrink rod 202 is The first contraction spring 203 is sleeved, the bottom end of the contraction rod 202 is fixedly connected to the first movable plate 204, the bottom end of the first movable plate 204 is symmetrically and fixedly connected to the connecting column 205, and the bottom end of the connecting column 205 is fixedly connected to the third movable plate 204. Two movable plates 207. The bottom end of the second movable plate 207 is fitted with sealing gaskets 206 on both sides. The sealing gaskets 206 are fixedly connected to both sides of the interior of the housing 1. One end of the second movable plate 207 is internally slidably connected to the limiting rod 208. The upper and lower ends of the limit rod 208 are fixedly connected to the shell 1 and the sealing gasket 206. The end of the second movable plate 207 away from the limit rod 208 is fixedly connected to a sliding block 210. A sliding groove 209 is provided on one side of the inner side of the shell 1. There is a sliding connection between the block 210 and the sliding groove 209.

A non-return component 3 is installed inside the bottom end of the shell 1. The non-return component 3 includes a connecting pipe 301. The top of the connecting pipe 301 is fixedly connected through the shell 1. A mounting box 302 is installed inside the connecting pipe 301. The upper and lower parts of the mounting box 302 are There is a mounting slot 303 inside the side, and mounting blocks 304 are fixedly connected to both sides of the mounting box 302. A sliding block 305 is slidingly connected to the inside of the mounting block 304. The bottom end of the sliding block 305 is fixedly connected to the internal bottom end of the mounting block 304. There is a second contraction spring 306, and a connecting plate 307 is fixedly connected between the sliders 305. The top of the connecting plate 307 is fixedly connected with a blocking block 308. The top of the blocking block 308 is connected with the installation groove 303. The installation box 302 and Fixing pieces 309 are fixedly connected between the connecting pipes 301, so that the installation box 302 is easy to install, disassemble and repair. A baffle 310 is slidably connected to the top of the connecting pipe 301. One end of the baffle 310 is rotatably connected to a threaded rod 311. The threaded rod The end of 311 away from the baffle 310 is threaded through the housing 1. By rotating the threaded rod 311, the baffle 310 is driven away from the connecting pipe 301. At this time, the water flow flows downward into the connecting pipe 301, and the water flow impacts the blocking block 308 so that the top of the blocking block 308 moves away. Installation groove 303, at this time, the slider 305 moves downward inside the installation block 304 to squeeze the second contraction spring 306, so that the water flows through the installation groove 303 and flows into the bottom end of the connecting pipe 301 to achieve a non-return effect, which is convenient for people to use. Bring convenience when using.

The inside of the water inlet pipe 101 is tilted and slidably connected with a filter 4. The top of the filter 4 is fixedly connected with a first fixing block 401. A second fixing block 402 is installed on one side of the first fixing block 401. The bottom of the second fixing block 402 The end is fixedly connected to the top of the water inlet pipe 101. The internal parts of the first fixed block 401 and the second fixed block 402 are threadedly connected with a fixed knob 403, so that small impurities in the water are filtered through the filter 4. Through the design of the fixed knob 403, It is convenient for the staff to replace and clean the filter screen 4.

The working principle of this utility model:

The water flows from the water inlet pipe 101 into the interior of the housing 1, and the second movable plate 207 is squeezed upward by the water flow, thereby driving the second movable plate 207 to move on the limiting rod 208, and at the same time driving the sliding block 210 to slide inside the sliding groove 209. , so that the second movable plate 207 drives the connecting column 205 to squeeze upward. Through the design of the limit rod 208, the sliding block 210 and the sliding groove 209, the movement of the second movable plate 207 is made more stable, and the impact of the water flow on the second movable plate is avoided. 207 shakes, and the movement of the connecting column 205 drives the first movable plate 204 to squeeze the contraction rod 202 and the first contraction spring 203, so that the water flows from between the second movable plate 207 and the sealing gasket 206 into the outlet pipe 102 , thereby completing the non-return effect. When the second movable plate 207 is impacted by water for a long time, the second movable plate 207 will be damaged, and the first contraction spring 203 frequently contracts in the water for a long time, resulting in a deterioration of the contraction effect, making the second activity A large gap is created between the plate 207 and the sealing gasket 206. The outlet pipe 102 is closed by operating the valve 103. At this time, backup transmission is performed through the connecting pipe 301 of the check assembly 3, so that there is too much water on the roof and the check mechanism 2 is damaged. At this time, it is inconvenient for the staff to repair the check mechanism 2, so the backup transmission effect brings many benefits to the staff. By rotating the threaded rod 311, the baffle 310 is driven away from the connecting pipe 301. At this time, the water flows downward into the inside of the connecting pipe 301. , the water flow impacts the blocking block 308 so that the top of the blocking block 308 is away from the installation groove 303. At this time, the slider 305 moves downward inside the installation block 304 to squeeze the second contraction spring 306, so that the water flows through the installation groove 303 into the connection The bottom end of the tube 301 achieves a non-return effect, which brings convenience to people when using it.

An embodiment of the present utility model has been described in detail above, but the content described is only a preferred embodiment of the present utility model and cannot be considered to limit the implementation scope of the present utility model. All equivalent changes and improvements made within the application scope of this utility model shall still fall within the patent coverage of this utility model.

Claims (7)

1. A siphon drainage backflow prevention mechanism, characterized in that it includes a shell (1), a check mechanism (2) is installed on the inner top of the shell (1), and the check mechanism (2) includes a mounting sleeve ( 201), the top end of the installation sleeve (201) is fixedly connected to the shell (1), the bottom end of the installation sleeve (201) is symmetrically and fixedly connected with a shrink rod (202), and the shrink rod (202) A first contraction spring (203) is sleeved on the outer wall. The bottom end of the contraction rod (202) is fixedly connected to a first movable plate (204). The bottom end of the first movable plate (204) is symmetrically and fixedly connected. There is a connecting column (205). The bottom end of the connecting column (205) is fixedly connected to a second movable plate (207). The bottom end of the second movable plate (207) is fitted with sealing gaskets (206) on both sides. , the sealing gasket (206) is fixedly connected to both sides of the interior of the housing (1), one end of the second movable plate (207) is internally slidingly connected to the limiting rod (208), and the limiting rod (208) The upper and lower ends are fixedly connected to the housing (1) and the sealing gasket (206). The end of the second movable plate (207) away from the limiting rod (208) is fixedly connected to a sliding block (210). The housing (1) A sliding groove (209) is provided on the inner side, and the sliding block (210) and the sliding groove (209) are slidingly connected. 2. A siphon drainage backflow prevention mechanism according to claim 1, characterized in that: a non-return component (3) is installed inside the bottom end of the housing (1), and the non-return component (3) includes a connection Pipe (301), the top of the connecting pipe (301) is fixedly connected through the shell (1), a mounting box (302) is installed inside the connecting pipe (301), and the upper and lower sides of the mounting box (302) An installation groove (303) is provided inside, and installation blocks (304) are fixedly connected to both sides of the installation box (302). A slide block (305) is slidably connected to the inside of the installation block (304). A second contraction spring (306) is fixedly connected to the bottom end of the block (305) and the inner bottom end of the installation block (304). A connecting plate (307) is fixedly connected between the slide blocks (305). The connecting plate The top end of (307) is fixedly connected with a blocking block (308), and the top end of the blocking block (308) is engaged and connected with the installation groove (303). 3. A siphon drainage backflow prevention mechanism according to claim 2, characterized in that: a fixing piece (309) is fixedly connected between the installation box (302) and the connecting pipe (301). 4. A siphon drainage backflow prevention mechanism according to claim 3, characterized in that: a baffle (310) is slidably connected to the top of the connecting pipe (301), and one end of the baffle (310) rotates A threaded rod (311) is connected, and one end of the threaded rod (311) away from the baffle (310) penetrates the housing (1) and is threaded. 5. A siphon drainage backflow prevention mechanism according to claim 4, characterized in that: a water inlet pipe (101) and a water outlet pipe (102) are installed at both ends of the housing (1). 6. A siphon drainage and backflow prevention mechanism according to claim 5, characterized in that: a filter screen (4) is tilted and slidably connected to the inside of the water inlet pipe (101), and the top of the filter screen (4) is fixed. A first fixed block (401) is connected, a second fixed block (402) is installed on one side of the first fixed block (401), and the bottom end of the second fixed block (402) is connected to the water inlet pipe (101) The top ends of the first fixing block (401) and the second fixing block (402) are threadedly connected with a fixing knob (403). 7. A siphon drainage backflow prevention mechanism according to claim 5, characterized in that a valve (103) is installed inside the water outlet pipe (102).