A water inlet pipe with a double-row toothed bend structure

Abstract

This utility model discloses a double-toothed bend structure for a water inlet pipe, relating to the technical field of pipe connection structures. It includes a bend body with an inlet and an outlet at each end. A threaded cap is installed at the inlet, and a double-toothed structure is fixedly installed at the outlet. An inlet mechanism is installed inside the inlet, comprising an inlet pipe, a stop plate, an elastic pressure plate, and a sealing plug. A filter mechanism is installed inside the inlet pipe, with a slot at the upper end and a liquid channel aligned vertically with the sealing plug in the middle of the stop plate. This double-toothed bend structure prevents backflow of liquid, and the filter mechanism ensures a continuous liquid supply even in emergency situations where the filter screen is clogged.

Description

Technical Field

[0001] This utility model relates to the field of pipeline connection structure technology, specifically a water inlet pipe with a double-row toothed bend structure. Background Technology

[0002] A pipe bend is a standard pipe fitting used in a piping system to change the direction of fluid flow. Its core function is to reduce fluid resistance through a smooth, curved flow path, thereby minimizing pressure loss in the piping system.

[0003] In the prior art, patent announcement number CN222977706U discloses a novel pipe bend connector, including a pipe bend body. One end of the pipe bend body is provided with a first connector that can be connected to a flexible hose, and the other end of the pipe bend body is provided with a second connector that can be connected to a rigid pipe. The second connector is connected to the rigid pipe through a connector. The side wall of the second connector is provided with an arc-shaped hole for the connector to pass through. The first connector and the pipe bend body are an integral structure, and the second connector and the pipe bend body are connected by a detachable connection structure.

[0004] The aforementioned elbow fittings facilitate quick and easy installation and disassembly, making them particularly suitable for operations in confined spaces. However, in actual use, due to their unique structure and hydrodynamic characteristics, the elbow body is prone to liquid backflow. Furthermore, users typically install filters at the ends of the elbow body. However, with prolonged use, the filters, after intercepting a large amount of impurities and particles, inevitably face the risk of clogging. A clogged filter cannot guarantee liquid supply in emergency situations. Summary of the Invention

[0005] The purpose of this invention is to provide a double-row toothed bend structure for a water inlet pipe to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a double-toothed bend structure for a water inlet pipe, comprising a bend body, with an inlet and an outlet respectively at both ends of the bend body. A threaded cap is installed at the inlet, and a double-toothed structure is fixedly installed at the outlet. An inlet mechanism is installed inside the inlet, the inlet mechanism including an inlet pipe installed inside the inlet, a water stop plate fixedly installed inside the inlet pipe, an elastic pressure plate fixedly installed at the bottom of the water stop plate, a sealing plug fixedly installed on the elastic pressure plate, and a filter mechanism installed inside the inlet pipe.

[0007] Preferably, a groove is provided at the upper end of the liquid inlet pipe, and a liquid channel is provided in the middle of the water stop plate, with the liquid channel and the sealing plug aligned vertically.

[0008] Preferably, the inlet is threaded, and the inlet pipe is installed in the inlet via the thread.

[0009] Preferably, the sealing plug is installed below the waterstop plate by an elastic pressure plate, the sealing plug is embedded in the waterstop plate through a liquid channel, and a sealing ring is sleeved on the outside of the sealing plug.

[0010] Preferably, the filtration mechanism includes a retainer fixedly installed inside the liquid inlet pipe, a secondary liquid inlet pipe fixedly installed on the retainer, a liquid inlet notch opened at the upper edge of the secondary liquid inlet pipe, a sliding frame slidably installed on the secondary liquid inlet pipe, a first filter screen fixedly installed inside the sliding frame, a return spring sleeved on the secondary liquid inlet pipe, and a second filter screen fixedly installed inside the secondary liquid inlet pipe, wherein the mesh size of the second filter screen is larger than that of the first filter screen.

[0011] Preferably, a sliding sleeve is provided at the middle position of the sliding frame, and the sliding frame is slidably installed on the secondary liquid inlet pipe through the sliding sleeve, and the sliding sleeve has a built-in sealing ring.

[0012] Preferably, the secondary inlet pipe is fixedly installed inside the inlet pipe by a retainer, one end of the return spring is connected to the retainer, and the other end of the return spring is connected to the sliding frame. The first filter screen is slidably installed inside the inlet pipe by the sliding frame, and a sealing ring is also provided on the outside of the sliding frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. In this application, under liquid pressure, liquid enters the inlet pipe through the inlet. At this time, the sealing plug disengages from the stop plate under pressure, causing the liquid channel to open. When the liquid channel is open, the liquid can pass smoothly through the bend body. Conversely, in the event of liquid backflow, the elastic force provided by the elastic plate will cause the sealing plug to re-embed into the liquid channel, thereby closing the liquid channel and effectively preventing liquid backflow.

[0014] 2. In this application, the first filter screen can filter the discharged liquid. Once the first filter screen becomes clogged, the liquid pressure will cause the sliding frame to move downwards. The downward movement of the sliding frame will cause the inlet to open, allowing the liquid to flow into the secondary inlet pipe. The liquid in the secondary inlet pipe will eventually pass through the second filter screen and be discharged. This design ensures that even in an emergency where the filter screen becomes clogged, the system can still maintain a continuous supply of liquid. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the assembly of the liquid inlet mechanism and the filtration mechanism of this utility model. Figure 4 This is a schematic diagram of the liquid inlet mechanism of this utility model; Figure 5 This is a schematic diagram of the filtration mechanism of this utility model.

[0016] The diagram shows the following markings: 1. Bend body; 2. Threaded cap; 3. Inlet; 4. Double tooth structure; 5. Outlet; 6. Inlet mechanism; 601. Inlet pipe; 602. Slotted groove; 603. Water stop plate; 604. Liquid channel; 605. Elastic pressure plate; 606. Sealing plug; 7. Filtering mechanism; 701. Secondary inlet pipe; 702. Inlet notch; 703. Sliding frame; 704. First filter screen; 705. Return spring; 706. Cage; 707. Second filter screen. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1 and Figure 2 As shown, this utility model provides a technical solution for a water inlet pipe with a double-row toothed bend structure, including a bend body 1, with an inlet 3 and an outlet 5 at each end of the bend body 1. A threaded cap 2 is installed at the inlet 3, and a double-toothed structure 4 is fixedly installed at the outlet 5. An inlet mechanism 6 is installed inside the inlet 3, and a filter mechanism 7 is installed inside the inlet pipe 601. The double-toothed structure 4 can ensure that the tooth tips are evenly embedded in the inner wall of the hose after sealing, preventing the hose from shifting vertically or rotating axially under external force after aging or thermal deformation, thus reducing the risk of leakage.

[0019] like Figure 2 and Figure 3 As shown, the liquid inlet mechanism 6 includes a liquid inlet pipe 601 installed in the liquid inlet 3. A water stop plate 603 is fixedly installed in the liquid inlet pipe 601. An elastic pressure plate 605 is fixedly installed at the bottom of the water stop plate 603. A sealing plug 606 is fixedly installed on the elastic pressure plate 605. A slot 602 is opened at the upper end of the liquid inlet pipe 601. A liquid channel 604 is opened in the middle of the water stop plate 603, and the liquid channel 604 is aligned vertically with the sealing plug 606. A thread is opened in the liquid inlet 3, and the liquid inlet pipe 601 is installed in the liquid inlet 3 through the thread.

[0020] Specifically, liquid enters the inlet pipe 601 through the inlet 3. Under the continuous pressure of the liquid itself, the sealing plug 606 gradually disengages from the fixed position of the waterstop plate 603. This process causes the liquid channel 604 to change from its original closed state to a fully open state. When the liquid channel 604 is fully open, the liquid can smoothly pass through the bend body 1, ensuring that the normal flow of the liquid is unobstructed. However, when liquid backflow occurs, the elastic pressure plate 605, with its own elastic force, presses the sealing plug 606 back into the liquid channel 604. This action causes the liquid channel 604 to return to a closed state, thereby effectively preventing liquid backflow and ensuring the normal operation of the system and the unidirectional flow of the liquid.

[0021] like Figure 2 and Figure 4 As shown, the filtration mechanism 7 includes a retainer 706 fixedly installed inside the liquid inlet pipe 601. A secondary liquid inlet pipe 701 is fixedly installed on the retainer 706. A liquid inlet notch 702 is opened at the upper edge of the secondary liquid inlet pipe 701. A sliding frame 703 is slidably installed on the secondary liquid inlet pipe 701. A first filter screen 704 is fixedly installed inside the sliding frame 703. A return spring 705 is sleeved on the secondary liquid inlet pipe 701. A second filter screen 707 is fixedly installed inside the secondary liquid inlet pipe 701, and the mesh size of the second filter screen 707 is larger than that of the first filter screen 704. A sliding sleeve is provided in the middle of the sliding frame 703. The sliding frame 703 is slidably installed on the secondary liquid inlet pipe 701 through the sliding sleeve, and the sliding sleeve has a built-in sealing ring.

[0022] Specifically, the liquid entering through the inlet pipe 601 first passes through the first filter screen 704, thus filtering the discharged liquid. However, as the equipment is used for an extended period, the first filter screen 704 inevitably accumulates more and more impurities and particulate matter, posing a risk of gradual clogging. When the first filter screen 704 becomes clogged due to impurity accumulation, the liquid flow is obstructed, and the pressure increases accordingly. This increased pressure forces the sliding frame 703 to move downwards. The downward movement of the sliding frame 703 is a crucial mechanical response, causing the inlet opening 702 to open. Once the inlet opening 702 opens, the previously obstructed liquid quickly flows into the secondary inlet pipe 701. The liquid entering the secondary inlet pipe 701 continues its flow path and is ultimately filtered through the second filter screen 707. This ensures that even in an emergency situation where the first filter screen 704 becomes clogged, the liquid supply can still be maintained, guaranteeing the normal operation of the entire equipment and the continuous flow of liquid.

[0023] Working principle: Liquid enters the inlet pipe 601 through the inlet port 3. Under the action of liquid pressure, the sealing plug 606 disengages from the water stop plate 603, so that the liquid channel 604 is in an open state. When the liquid channel 604 is in an open state, the liquid can pass through the bent pipe body 1 normally. When the liquid flows back, the elastic force provided by the elastic pressure plate 605 will press the sealing plug 606 into the liquid channel 604, so that the liquid channel 604 is closed, preventing the liquid from flowing back. Liquid entering through the inlet pipe 601 passes through the first filter screen 704, thus filtering the discharged liquid. As the usage time increases, the first filter screen 704 is at risk of clogging. When the first filter screen 704 is clogged, the liquid pressure forces the sliding frame 703 to move downward. After the sliding frame 703 moves downward, the inlet opening 702 will open, and the liquid will enter the secondary inlet pipe 701. The liquid entering the secondary inlet pipe 701 will eventually pass through the second filter screen 707 and be discharged for treatment, thus ensuring a liquid supply even in the event of filter clogging.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A double-row toothed bend structure for a water inlet pipe, comprising a bend body (1), wherein the bend body (1) is provided with an inlet (3) and an outlet (5) at both ends, characterized in that: A threaded cap (2) is installed at the inlet (3), a double tooth structure (4) is fixedly installed at the outlet (5), an inlet mechanism (6) is installed inside the inlet (3), the inlet mechanism (6) includes an inlet pipe (601) installed inside the inlet (3), a water stop plate (603) is fixedly installed inside the inlet pipe (601), an elastic pressure plate (605) is fixedly installed at the bottom of the water stop plate (603), a sealing plug (606) is fixedly installed on the elastic pressure plate (605), and a filter mechanism (7) is installed inside the inlet pipe (601).

2. The double-row toothed bend structure of a water inlet pipe according to claim 1, characterized in that: The upper end of the liquid inlet pipe (601) has a groove (602), and the middle position of the water stop plate (603) has a liquid channel (604), and the liquid channel (604) is aligned vertically with the sealing plug (606).

3. The double-row toothed bend structure of a water inlet pipe according to claim 2, characterized in that: The inlet (3) is threaded, and the inlet pipe (601) is installed in the inlet (3) by means of the thread.

4. The double-row toothed bend structure of a water inlet pipe according to claim 3, characterized in that: The sealing plug (606) is installed below the waterstop plate (603) by an elastic pressure plate (605). The sealing plug (606) is embedded in the waterstop plate (603) through a liquid channel (604), and a sealing ring is sleeved on the outside of the sealing plug (606).

5. The double-row toothed bend structure of a water inlet pipe according to claim 4, characterized in that: The filtration mechanism (7) includes a retainer (706) fixedly installed in the liquid inlet pipe (601), a secondary liquid inlet pipe (701) fixedly installed on the retainer (706), a liquid inlet notch (702) is provided at the upper edge of the secondary liquid inlet pipe (701), a sliding frame (703) is slidably installed on the secondary liquid inlet pipe (701), a first filter screen (704) is fixedly installed in the sliding frame (703), a reset spring (705) is sleeved on the secondary liquid inlet pipe (701), and a second filter screen (707) is fixedly installed in the secondary liquid inlet pipe (701), and the mesh size of the second filter screen (707) is larger than that of the first filter screen (704).

6. The double-row toothed bend structure of a water inlet pipe according to claim 5, characterized in that: The sliding frame (703) is provided with a sliding sleeve in the middle position. The sliding frame (703) is slidably installed on the secondary liquid inlet pipe (701) through the sliding sleeve, and the sliding sleeve has a built-in sealing ring.

7. The double-row toothed bend structure of a water inlet pipe according to claim 6, characterized in that: The secondary inlet pipe (701) is fixedly installed in the inlet pipe (601) by a retainer (706). One end of the return spring (705) is connected to the retainer (706), and the other end of the return spring (705) is connected to the sliding frame (703). The first filter screen (704) is slidably installed in the inlet pipe (601) by the sliding frame (703), and a sealing ring is also provided on the outside of the sliding frame (703).

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