Gate valve

Abstract

The utility model discloses a gate valve which comprises a valve body and a valve cover arranged on the valve body, a water inlet and a water outlet are arranged on two sides of the valve body, a water inlet pipe joint is arranged at the water inlet of the valve body, and a water outlet pipe joint is arranged at the water outlet of the valve body. A gate plate assembly is slidably installed in a valve cavity of the valve body, and the gate plate valve can be opened or closed through the gate plate assembly. A mounting seat is arranged at one end of the water outlet pipe joint, a rubber ring is sleeved on the mounting seat and is pressed by a rubber ring fixing ring, a boss is arranged on one side, facing the flashboard assembly, of the rubber ring, and the boss penetrates through a central hole of the rubber ring fixing ring and is pressed on the flashboard assembly to form sealing. The gate plate is pressed and sealed through the rubber ring installed on the water outlet pipe connector, internal water leakage caused by untight sealing of the valve in the closed state can be effectively prevented, and water resources are saved. When the valve is used, the water flow in the valve can be further adjusted by controlling the opening degree of the flashboard.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a gate valve. Background Technology

[0002] my country is a traditional agricultural country, and farmland is the material foundation for the healthy development of the social economy and the material guarantee for people's survival. In farmland management, the soil moisture content plays a crucial role in crop growth. Under natural conditions, insufficient rainfall or uneven distribution often fails to meet the water requirements of crops. Therefore, in order to ensure crop yield, irrigation systems are needed to supplement farmland with water.

[0003] In irrigation systems, valves are typically used to connect hoses for water delivery and control. By opening the valve, water can be directed through the hose to the field for sprinkler or drip irrigation. However, the existing agricultural valves have poor sealing performance, which makes them prone to leakage at the opening and closing points when the valves are closed, resulting in wasted water resources. Summary of the Invention

[0004] This utility model provides a gate valve that can effectively prevent internal water leakage due to poor sealing when the valve is closed, thus saving water resources. The specific technical solution is as follows:

[0005] A gate valve includes a valve body and a valve cover disposed on the valve body. The valve body has an inlet and an outlet on both sides. The valve body is characterized by having an inlet pipe connector at the inlet and an outlet pipe connector at the outlet. A gate assembly is slidably installed within the valve cavity of the valve body, allowing the gate valve to be opened or closed. One end of the outlet pipe connector has a mounting base, on which a rubber ring is fitted and pressed by a rubber ring retaining ring. A boss is provided on the side of the rubber ring facing the gate assembly, passing through the central hole of the rubber ring retaining ring and pressing against the gate assembly to form a seal.

[0006] Furthermore, the gate assembly includes a gate and a valve stem. The valve stem passes through the valve cover and is connected to the gate. The valve stem drives the gate to move up and down to realize the opening and closing of the gate valve. A gate groove matching the gate is provided between the inlet and outlet of the valve body. The gate slides into the gate groove along the valve cavity and fits tightly with the protrusion of the rubber ring to form a seal.

[0007] Furthermore, an annular groove is provided in the middle of the rubber ring fixing ring, the outer ring surface of the rubber ring abuts against the annular groove, and the protrusion of the rubber ring extends out of the rubber ring fixing ring and presses against the gate plate.

[0008] Furthermore, a stepped surface is provided inside the outlet of the valve body, and the outer edge of the rubber ring fixing ring abuts against the stepped surface.

[0009] Furthermore, the upper end of the gate is provided with a connector, the inner wall of the connector is provided with an internal thread, and the lower end of the valve stem is provided with an external thread that matches the internal thread of the connector. The valve stem is threadedly connected to the connector of the gate. The valve cavity of the valve body is provided with a slide that matches the connector of the gate. The connector of the gate is located in the slide and can move up and down along the slide.

[0010] Furthermore, a handle is provided at the upper end of the valve stem, which allows the gate to be easily pulled or pressed down.

[0011] Furthermore, a connecting post is provided on the valve cover. The outer surface of the connecting post is provided with external threads, and the top end is provided with a groove for placing a sealing ring. A nut is fitted onto the valve stem, and the inner hole of the nut is provided with internal threads that mate with the external threads of the connecting post. The nut is screwed onto the connecting post, and the raised edge at the top of the nut presses the sealing ring, so that the inner wall of the sealing ring is tightly attached to the outer wall of the valve stem, thereby fixing the valve stem.

[0012] Furthermore, to facilitate the rotation of the nut, protrusions are provided on the outer wall of the nut.

[0013] Furthermore, the inlet pipe connector and the valve body are integrated into one structure, and the outer surface of the inlet pipe connector is provided with anti-slip texture, so that the connection between the inlet pipe connector and the hose is firm and not easy to fall off.

[0014] Furthermore, the inlet pipe connector and the valve body are an integral structure, and the inner wall of the inlet pipe connector is provided with internal threads. The inlet pipe connector is connected to the hard pipe thread through the internal threads.

[0015] This utility model has a simple structure and reasonable design. The rubber ring installed on the outlet pipe joint presses and seals the gate, effectively preventing internal leakage caused by poor sealing when the valve is closed, thus saving water resources. In use, the flow of water inside the valve can be controlled by lifting or pressing down the gate. The flow rate can also be further adjusted by controlling the opening and closing degree of the gate. Attached Figure Description

[0016] Figure 1 This is a perspective view of Embodiment 1 of this utility model;

[0017] Figure 2 This is a front view of Embodiment 1 of this utility model;

[0018] Figure 3 This is an exploded structural diagram of Embodiment 1 of this utility model;

[0019] Figure 4 yes Figure 2 A cross-sectional view of surface AA;

[0020] Figure 5 yes Figure 2A cross-sectional view of the BB side;

[0021] Figure 6 This is a front view of the rubber ring of this utility model;

[0022] Figure 7 This is a three-dimensional view of the rubber ring of this utility model;

[0023] Figure 8 This is a schematic diagram of the connection structure between the valve body and the water inlet pipe connector in Embodiment 1 of this utility model;

[0024] Figure 9 This is a schematic diagram of the gate assembly of this utility model;

[0025] Figure 10 This is a schematic diagram of the structure of the water outlet pipe connector of this utility model;

[0026] Figure 11 This is a schematic diagram of the structure of the nut of this utility model;

[0027] Figure 12 This is a schematic diagram of the structure of the rubber ring fixing ring of this utility model;

[0028] Figure 13 This is a perspective view of Embodiment 2 of this utility model;

[0029] Figure 14 This is an exploded structural diagram of Embodiment 2 of this utility model;

[0030] Figure 15 This is a perspective view of Embodiment 3 of this utility model;

[0031] Figure 16 This is an exploded structural diagram of Embodiment 3 of this utility model. Detailed Implementation

[0032] To better understand the purpose, function, and specific design of this utility model, the gate valve of this utility model will be described in further detail below with reference to the accompanying drawings. Example 1

[0033] like Figures 1-10As shown, the gate valve of this utility model includes a valve body 1 and a valve cover 4 disposed on the valve body 1. An inlet 11 is provided on one side of the valve body 1, and an outlet 12 is provided on the other side of the valve body 1. The inlet 11 and the outlet 12 are connected. An inlet pipe connector 2 is provided at the inlet 11 of the valve body 1, and an outlet pipe connector 3 is provided at the outlet 12 of the valve body 1. A gate assembly 5 is slidably installed in the valve cavity 13 of the valve body 1, and the gate valve can be opened or closed through the gate assembly 5. A mounting base 31 is provided at one end of the outlet pipe connector 3. A rubber ring 7 is fitted onto the mounting base 31 and pressed tightly by a rubber ring fixing ring 8. A boss 71 is provided on the side of the rubber ring 7 facing the gate assembly 5. The boss 71 passes through the central hole of the rubber ring fixing ring 8 and is pressed tightly onto the gate assembly 5 to form a seal (e.g., Figure 8 (As shown).

[0034] Specifically, such as Figure 3 , Figure 4 , Figure 5 , Figure 8 and Figure 9 As shown, the gate assembly 5 includes a gate 52 and a valve stem 51. The valve stem 51 passes through the valve cover 4 and is connected to the gate 52. The valve stem 51 drives the gate 52 to move up and down to open and close the gate valve. A gate groove 14 matching the gate 52 is provided between the inlet 11 and the outlet 12 of the valve body 1. In use, the gate 52 is slid into the gate groove 14 along the valve cavity 13, so that the lower end of the gate 52 abuts against the gate groove 14, sealing the inlet 11 and the outlet 12, thereby cutting off the water flow. Pulling the valve stem 51 upwards drives the gate 52 to move upwards, which can gradually open the inlet 11 and the outlet 12, allowing the water to flow into the outlet pipe joint 3 through the outlet 12. In use, by pulling or pressing down the valve stem 51, the opening degree of the gate 52 can be further adjusted, thereby adjusting the water flow rate at the outlet 12.

[0035] like Figure 4 , Figure 6 , Figure 7 and Figure 12 As shown, an annular groove 81 is provided in the middle of the rubber ring fixing ring 8, the outer ring surface 72 of the rubber ring 7 abuts against the annular groove 81, and the protrusion 71 of the rubber ring 7 extends out of the rubber ring fixing ring 8 and seals against the gate plate 52 to solve the problem of water leakage when the valve is closed.

[0036] like Figure 3 and Figure 4 As shown, a stepped surface 121 is provided inside the outlet 12 of the valve body 1, and the outer edge 82 of the rubber ring retaining ring 8 abuts against the stepped surface 121. During installation, the outlet pipe connector 3, together with the rubber ring 7 and the rubber ring retaining ring 8, is inserted into the outlet 12, and then the outlet pipe connector 3 is connected to the valve body 1 by heat fusion.

[0037] like Figure 3 , Figure 8 and Figure 9 As shown, the upper end of the gate 52 is provided with a connector 521, the inner wall of which is provided with an internal thread. The lower end of the valve stem 51 is provided with an external thread 511 that mates with the internal thread of the connector 521. The valve stem 51 is threadedly connected to the connector 52 of the gate 52. The valve cavity 13 of the valve body 1 is provided with a slide 131 that is adapted to the connector 521 of the gate 52. The connector 521 of the gate 52 is located in the slide 131 and can move up and down along the slide 131.

[0038] To facilitate pulling or pressing down the gate 52, a handle 512 is also provided at the upper end of the valve stem 51.

[0039] like Figure 3 , Figure 5 and Figure 11 As shown, a connecting post 41 is provided on the valve cover 4. The outer surface of the connecting post 41 is provided with external threads. The top of the connecting post 41 is provided with a groove 411 for placing a sealing ring. The nut 6 is sleeved on the valve stem 51, and the inner hole of the nut 6 is provided with an internal thread that matches the external thread of the connecting post 41. The nut 6 is screwed onto the connecting post 41, and the protruding edge 62 at the top of the nut 6 presses the sealing ring, so that the inner wall of the sealing ring is tightly attached to the outer wall of the valve stem 51, thereby fixing the valve stem 51. This prevents the gate 52 from falling under the impact of water flow when the opening and closing degree of the gate 52 is controlled.

[0040] To facilitate the rotation of the nut 6, a protrusion 61 is provided on the outer wall of the nut 6. The valve cover 4 and the valve body 1 are connected together by heat fusion.

[0041] like Figure 3 , Figure 8 and Figure 10 As shown, the water inlet pipe connector 2 and the valve body 1 are an integral structure. The outer surface of the water inlet pipe connector 2 is provided with anti-slip texture 21, so that when the water inlet pipe connector 2 is connected to the hose, the connection is firm and not easy to fall off.

[0042] The outer surface of the water outlet pipe connector 3 is provided with anti-slip texture 32, so that when the water outlet pipe connector 3 is connected to the hose, the connection is firm and not easy to fall off. Example 2

[0043] like Figure 13 and Figure 14 As shown, the difference between this embodiment and Embodiment 1 is that it includes two valve bodies 1, with an inlet pipe connector 2 connected to the inlet of each valve body 1. The inlet pipe connector 2 and the two valve bodies are an integral structure, and each valve body has an outlet pipe connector 3 at its outlet 12. The rest of the structure is the same as in Embodiment 1, so it will not be described again. Example 3

[0044] like Figure 15 and Figure 16 As shown, the difference between this embodiment and Embodiment 1 is that the inlet pipe connector 2 and the valve body 1 are an integral structure, and the inner wall of the inlet pipe connector 2 is provided with internal threads. The inlet pipe connector 2 is connected to the hard pipe thread through the internal threads. The rest of the structure is the same as that in Embodiment 1, and will not be described again.

[0045] 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 flap valve comprising a valve body and a valve cover provided on the valve body, water inlet and outlet provided on both sides of the valve body, characterized in that, The water inlet pipe joint is arranged at the water inlet of the valve body, and the water outlet pipe joint is arranged at the water outlet of the valve body; the gate plate assembly is slidably arranged in the valve cavity of the valve body, and the gate valve can be opened or closed through the gate plate assembly; one end of the water outlet pipe joint is provided with a mounting seat, a rubber ring is sleeved on the mounting seat and is compressed by a rubber ring fixing ring, and a boss is arranged on one side of the rubber ring facing the gate plate assembly, and the boss is compressed on the gate plate assembly through the center hole of the rubber ring fixing ring to form a seal.

2. The gate valve of claim 1, wherein, The gate plate assembly comprises a gate plate and a valve rod, the valve rod is connected with the gate plate through the valve cover, and the gate plate is driven by the valve rod to move up and down to realize the opening and closing of the gate valve; a gate groove matched with the gate plate is arranged between the water inlet and the water outlet of the valve body, and the gate plate slides into the gate groove and tightly abuts against the boss of the rubber ring to form a seal.

3. The gate valve of claim 2, wherein, The middle part of the rubber ring fixing ring is provided with an annular groove, the outer ring surface of the rubber ring abuts against the annular groove, and the boss of the rubber ring protrudes out of the rubber ring fixing ring and is compressed on the gate plate.

4. The gate valve of claim 3, wherein, A step surface is arranged in the water outlet of the valve body, and the outer edge of the rubber ring fixing ring abuts against the step surface.

5. The gate valve of claim 2, wherein, The upper end of the gate plate is provided with a connecting head, the inner wall of the connecting head is provided with an internal thread, the lower end of the valve rod is provided with an external thread matched with the internal thread of the connecting head, and the valve rod is threadedly connected with the connecting head of the gate plate; a slide channel matched with the connecting head of the gate plate is arranged in the valve cavity of the valve body, and the connecting head of the gate plate is arranged in the slide channel and can move up and down along the slide channel.

6. The gate valve of claim 5, wherein, The upper end of the valve rod is provided with a handle, and the gate plate can be conveniently pulled or pressed down through the handle.

7. A flap valve according to claim 2 or 5, characterised in that A connecting column is arranged on the valve cover, the outer surface of the connecting column is provided with an external thread, the top end is provided with a notch for placing a sealing ring, a nut is sleeved on the valve rod, and the inner hole of the nut is provided with an internal thread matched with the external thread of the connecting column, the nut is screwed on the connecting column, the convex edge of the inner top of the nut is compressed on the sealing ring, and the inner wall of the sealing ring is tightly abutted against the outer wall of the valve rod, so that the valve rod is fixed.

8. The flap valve of claim 7, wherein, In order to facilitate the rotation of the nut, a protrusion is further arranged on the outer wall of the nut.

9. The flap valve of claim 1, wherein, The water inlet pipe joint and the valve body are of an integral structure, and the outer surface of the water inlet pipe joint is provided with anti-skid lines, so that the water inlet pipe joint is firmly connected with the hose and is not easy to fall off.

10. The gate valve of claim 1, wherein, The water inlet pipe joint and the valve body are of an integral structure, and the inner wall of the water inlet pipe joint is provided with an internal thread, and the water inlet pipe joint is threadedly connected with the hard pipe through the internal thread.

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