A valve for water supply pipelines with a limiting structure

Abstract

This utility model discloses a water pipeline valve with a limiting structure, relating to the field of valve technology. The water pipeline valve with a limiting structure includes: a valve cavity; a valve cover is bolted to the upper opening of the valve cavity; a valve stem is threaded to the inside of the valve cover; a valve disc is fixedly connected to the lower end of the valve stem; a handwheel is fixedly connected to the upper end of the valve stem; an adjusting cavity is fixedly connected to the upper end of the valve cover and outside the valve stem; an adjusting handle is sleeved on the outside of the adjusting cavity; the inside of the adjusting handle is threaded to the inner wall of the adjusting cavity; a fixed base is rotatably connected to the lower outer end of the adjusting handle; a sliding groove is formed on the inner wall of the lower end of the adjusting handle; a pressure block is slidably connected inside the sliding groove; the inner side of the pressure block is arc-shaped; an involute protrusion is fixedly connected to the lower surface of the pressure block; and an involute groove is formed on the upper surface of the fixed base.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a valve for water supply pipelines with a limiting structure. Background Technology

[0002] In various water pipeline systems, gate valves play a crucial role in fluid control. Their working principle involves rotating a handwheel to drive the valve stem and valve disc to move vertically, changing the flow channel area and thus achieving flow regulation and on / off control. In practical applications, such as heating systems requiring seasonal flow adjustments or chemical processes requiring raw material proportioning, valves must be opened to specific positions. However, existing gate valves primarily rely on manual control and experience-based judgment by operators to position the valve disc. This operational mode results in a lack of a unified benchmark for valve opening; operators often rely on feel and the length of the valve stem protruding for a vague positioning, making it difficult to maintain the target opening. Therefore, a water pipeline valve with a limiting structure is designed to solve these problems. Utility Model Content

[0003] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a water pipeline valve with a limiting structure, which solves the problem that existing gate valves mainly rely on manual control and experience judgment by operators to achieve valve disc stroke positioning, and the valve opening degree lacks a unified benchmark and is difficult to stay at the target opening degree.

[0004] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a valve for a water supply pipeline with a limiting structure, comprising: a valve cavity, a valve cover bolted to the upper opening of the valve cavity, a valve stem threadedly connected to the inside of the valve cover, a valve disc fixedly connected to the lower end of the valve stem, a handwheel fixedly connected to the upper end of the valve stem, an adjusting cavity fixedly connected to the upper end of the valve cover and outside the valve stem, an adjusting handle sleeved on the outside of the adjusting cavity, the inside of the adjusting handle being threadedly connected to the inner wall of the adjusting cavity, a fixed base rotatably connected to the lower outer end of the adjusting handle, a sliding groove formed on the lower inner wall of the adjusting handle, a pressure block slidably connected inside the sliding groove, the inner side of the pressure block being arc-shaped, an involute protrusion fixedly connected to the lower surface of the pressure block, an involute groove formed on the upper surface of the fixed base, and the fixed base and the pressure block engaging through the involute protrusion and the involute groove.

[0005] Preferably, a rubber pad is fixedly connected to the inner side of the pressure block.

[0006] Preferably, the thread direction between the adjusting handle and the adjusting cavity is opposite to the thread direction between the valve stem and the valve cover.

[0007] Preferably, the outer side of the regulating cavity is marked with a proportional indicator of the valve opening / closing depth.

[0008] Preferably, both the adjustment cavity and the adjustment handle are made of stainless steel.

[0009] Preferably, the handwheel includes a hollow base with an open top. The lower end of the base is fixedly connected to a valve stem. Teeth are fixedly connected to the lower end of the inner wall of the base. A handle is inserted into the base. Teeth are also fixedly connected to the outer side of the lower end of the handle. The teeth inside the base mate with the teeth at the lower end of the handle. Two arc-shaped limiting grooves are provided at the lower end of the handle and above the teeth. A limiting shell is provided around the upper end of the base. The limiting shell is connected to the base by threads. A limiting post is slidably connected inside the limiting shell. A spring abuts against the limiting post inside the limiting shell.

[0010] Preferably, the upper side of the lower end teeth of the inner wall of the base and the lower side of the outer end teeth of the handle are both chamfered.

[0011] (III) Beneficial Effects This utility model provides a valve for water supply pipelines with a limiting structure, which has at least the following advantages compared with the prior art: 0. This water pipeline valve with a limit structure sets a stop point for the downward stroke of the handwheel and valve stem by rotating and locking the height of the adjusting handle on the adjusting chamber. When the handwheel is operated to move the valve disc downward, the handwheel will stop at the upper end of the adjusting handle, thereby stopping the valve disc at the preset opening height. This solves the problem that the opening degree of traditional valves depends on the operator's experience and is difficult to maintain accurately.

[0012] 1. This water pipeline valve with a limit structure, through a preset mechanical limit, can prevent the handwheel from rotating beyond the set position, fundamentally avoiding damage to the sealing surface due to excessive valve disc closure caused by improper operation. This not only protects the key components of the valve but also extends its service life. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is an anatomical view of the present invention; Figure 4 This utility model Figure 3 A magnified view of a portion of the image; Figure 5 This is a schematic diagram of the handwheel structure of this utility model.

[0014] In the diagram: 1. Valve chamber; 2. Valve cover; 3. Valve stem; 4. Valve disc; 5. Handwheel; 6. Adjustment chamber; 7. Adjustment handle; 8. Fixed base; 9. Sliding groove; 10. Pressure block; 51. Base; 52. Handle; 53. Arc-shaped limiting groove; 54. Limiting shell; 55. Limiting column; 56. Spring. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-5 This utility model provides a technical solution: a valve for a water pipeline with a limiting structure, comprising: a valve cavity 1, a valve cover 2 bolted to the upper opening of the valve cavity 1, a valve stem 3 threadedly connected to the inside of the valve cover 2, a valve disc 4 fixedly connected to the lower end of the valve stem 3, a handwheel 5 fixedly connected to the upper end of the valve stem 3, an adjusting cavity 6 fixedly connected to the upper end of the valve cover 2 and located outside the valve stem 3, and an adjusting handle 7 sleeved on the outside of the adjusting cavity 6. The inner wall of the adjustment handle 7 is connected to the inner wall of the adjustment cavity 6 by threads. The lower outer side of the adjustment handle 7 is rotatably connected to the fixed base 8. The lower inner wall of the adjustment handle 7 is provided with a sliding groove 9. The sliding groove 9 is slidably connected to the pressure block 10. The inner side of the pressure block 10 is arc-shaped. The lower surface of the pressure block 10 is fixedly connected with an involute protrusion. The upper surface of the fixed base 8 is provided with an involute groove. The fixed base 8 and the pressure block 10 are engaged by the involute protrusion and the involute groove.

[0017] In use, after rotating the adjusting handle 7 upwards to the desired position, rotate the fixed base 8. Since the fixed base 8 and the pressure block 10 are engaged by the involute protrusion and involute groove, the pressure block 10 slides inwards until it abuts against the outer wall of the internal adjusting cavity 6, thus fixing the position of the adjusting handle 7. Rotate the handwheel 5, and the valve stem 3 will rotate together. The valve stem 3 is connected to the upper end of the valve cover 2 by a thread, causing the valve stem 3 to move downwards, thereby adjusting the position of the valve disc 4. However, when the set opening degree is reached, the position of the handwheel 5 will be blocked by the upper end of the adjusting handle 7, preventing it from rotating downwards further and ensuring the opening degree of the valve.

[0018] like Figure 1-5As shown in the figure, this utility model embodiment provides an implementation method in which a rubber pad is fixedly connected to the inner side of the pressure block 10 based on the above implementation method.

[0019] Analysis of the above structure shows that the rubber pad on the inner side of the pressure block 10 can increase friction and prevent the pressure block 10 from scratching the outer wall of the adjustment cavity 6.

[0020] like Figure 1-5 As shown, this utility model embodiment provides an implementation method in which the thread direction between the adjusting handle 7 and the adjusting cavity 6 is opposite to the thread direction between the valve stem 3 and the valve cover 2.

[0021] Analysis of the above structure shows that it can prevent the adjustment handle 7 from rotating when the handwheel 5 is operated, thus avoiding accidental displacement of the limit device and ensuring the stability of the set position.

[0022] like Figure 1-5 As shown, this utility model embodiment provides an implementation method. Based on the above implementation method, the outer side of the adjustment cavity 6 is marked with a proportional mark of the valve opening and closing depth.

[0023] Analysis of the above structure shows that it allows operators to quickly find the corresponding opening degree, facilitating operation and positioning.

[0024] like Figure 1-5 As shown, this utility model embodiment provides an implementation method. Based on the above implementation method, both the adjustment cavity 6 and the adjustment handle 7 are made of stainless steel.

[0025] Analysis of the above structure shows that both the adjustment chamber 6 and the adjustment handle 7 are made of stainless steel, which can reduce rust and extend service life.

[0026] like Figure 1-5 As shown, this utility model embodiment provides an implementation method. Based on the above implementation method, the handwheel 5 includes a hollow base 51 with an open upper end. The lower end of the base 51 is fixedly connected to the valve stem 3. Teeth are fixedly connected to the lower end of the inner wall of the base 51. A handle 52 is inserted and connected inside the base 51. Teeth are also fixedly connected to the outer side of the lower end of the handle 52. The teeth inside the base 51 cooperate with the teeth at the lower end of the handle 52. Two arc-shaped limiting grooves 53 are opened at the lower end of the handle 52 and above the teeth. A limiting shell 54 is provided around the upper end of the base 51. The limiting shell 54 is connected to the base 51 by threads. A limiting column head 55 is slidably connected inside the limiting shell 54. A spring 56 abuts against the limiting column head 55 and the inside of the limiting shell 54.

[0027] Analysis of the above structure shows that under normal conditions, the handle 52 is in the upper position, and the two sets of teeth are not engaged. When rotating, only the handle 52 rotates alone. When it is necessary to adjust the position of the regulating valve 4, the handle 52 is pressed down. At this time, the lower arc-shaped limiting groove 53 will push the limiting column 55 into the limiting housing 54 until the upper arc-shaped limiting groove 53 is pushed to the position of the limiting column 55. Then, the two sets of teeth are engaged. Rotating at this time will drive the base 51 to rotate together, thereby causing the valve stem 3 to rotate and adjust the position of the regulating valve 4. After the adjustment is completed, the handle 52 is lifted up until the limiting column 55 is stuck in the position of the lower arc-shaped limiting groove 53 to prevent accidental contact.

[0028] like Figure 1-5 As shown in the figure, this utility model embodiment provides an implementation method. Based on the above implementation method, the upper side of the lower end teeth of the inner wall of the base 51 and the lower side of the outer end teeth of the handle 52 are both provided with chamfers.

[0029] Analysis of the above structure shows that the chamfers on the upper side of the teeth at the lower end of the inner wall of the base 51 and the lower side of the teeth at the lower outer end of the handle 52 can serve as guides to facilitate the connection of the teeth.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A valve for a water pipeline equipped with a limiting structure, characterized in that, include: A valve chamber (1) has a valve cover (2) bolted to its upper opening. A valve stem (3) is threaded into the valve cover (2). A valve disc (4) is fixedly connected to the lower end of the valve stem (3). A handwheel (5) is fixedly connected to the upper end of the valve stem (3). An adjustment chamber (6) is fixedly connected to the upper end of the valve cover (2) and outside the valve stem (3). An adjustment handle (7) is fitted onto the outside of the adjustment chamber (6). The inside of the adjustment handle (7) is flush with the inner wall of the adjustment chamber (6). The adjustment handle (7) is connected by threads. The lower outer side of the adjustment handle (7) is rotatably connected to a fixed base (8). The lower inner wall of the adjustment handle (7) is provided with a sliding groove (9). The sliding groove (9) is slidably connected to a pressure block (10). The inner side of the pressure block (10) is arc-shaped. The lower surface of the pressure block (10) is fixedly connected with an involute protrusion. The upper surface of the fixed base (8) is provided with an involute groove. The fixed base (8) and the pressure block (10) cooperate through the involute protrusion and the involute groove.

2. A valve for a water pipeline with a limiting structure according to claim 1, characterized in that: A rubber pad is fixedly connected to the inner side of the pressure block (10).

3. A valve for a water pipeline with a limiting structure according to claim 1, characterized in that: The thread direction between the adjusting handle (7) and the adjusting cavity (6) is opposite to the thread direction between the valve stem (3) and the valve cover (2).

4. A valve for a water pipeline with a limiting structure according to claim 1, characterized in that: The regulating cavity (6) is marked with a proportional indicator of the valve opening and closing depth on its outer side.

5. A water pipeline valve with a limiting structure according to claim 1, characterized in that: Both the adjustment chamber (6) and the adjustment handle (7) are made of stainless steel.

6. A valve for a water pipeline with a limiting structure according to claim 1, characterized in that: The handwheel (5) includes a hollow base (51) with an open top. The lower end of the base (51) is fixedly connected to the valve stem (3). The lower end of the inner wall of the base (51) is fixedly connected with teeth. A handle (52) is inserted into the base (51). Teeth are also fixedly connected to the lower outer side of the handle (52). The teeth inside the base (51) cooperate with the teeth at the lower end of the handle (52). Two arc-shaped limiting grooves (53) are opened at the lower end of the handle (52) and above the teeth. A limiting shell (54) is provided around the upper end of the base (51). The limiting shell (54) is connected to the base (51) by threads. A limiting pin (55) is slidably connected inside the limiting shell (54). A spring (56) abuts against the limiting pin (55) and the inside of the limiting shell (54).

7. A valve for a water pipeline with a limiting structure according to claim 6, characterized in that: The upper side of the lower teeth of the inner wall of the base (51) and the lower side of the outer teeth of the lower end of the handle (52) are both chamfered.

Images