Efficient water-saving water supply pipeline valve for constructional engineering

Abstract

The utility model discloses an efficient water-saving type water supply pipeline valve for constructional engineering, which belongs to the technical field of valves and comprises a valve body, a valve cover is fixedly connected onto the valve body, a valve rod is mounted on the valve cover in a sliding manner, one end of the valve rod extends into the valve body, a valve core is mounted at one end of the valve rod in the valve body, a groove matched with the valve core is formed in the valve cover, and the valve cover is fixedly connected with the valve body. A limiting assembly is arranged on the valve deck and can limit the valve element in the groove. According to the water supply pipeline valve, the semicircular ring capable of locking the valve element is arranged on the valve deck, the groove matched with the valve element is formed in the valve deck, and when the valve is in a completely-opened state, the semicircular ring can lock the valve element in the groove, so that the situation that connection between the valve element and the valve rod is damaged due to the fact that water flow impacts the valve element is avoided, and the service life of the valve element is prolonged. And the situation that the valve cannot be completely closed due to inclination of the valve element can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, specifically disclose a high -efficient water -saving type water supply pipeline valve for constructional engineering. BACKGROUND

[0002] Water supply system has very important role on constructional engineering, it ensures that all users in building can obtain safe, reliable drinking water and other water demand, and valve plays an indispensable role in water supply system, they pass through the direction of water flow, pressure and flow to ensure the normal operation of system, and the valve includes stop valve, gate valve and ball valve, among them, stop valve is widely used because of having good regulating performance, reliable sealing, easy maintenance and the like, and in actual use, the opening of the valve can be adjusted to accurately control the flow of water to achieve the purpose of water saving.

[0003] Such as the patent with the publication number CN221145322U, the announcement date is June 14, 2024, which discloses a flange stop valve, belonging to valve technical field.It solves the problem that the existing flange stop valve does not have sealing protection and the like.The flange stop valve comprises a stop valve body, a stop valve cover is bolted to the top of the stop valve body, a stop valve stem is penetrated and installed at the center of the top of the stop valve cover, a stop valve flap is fixedly connected to the surface of the stop valve stem and located in the inner cavity of the stop valve body, a sealing protection assembly is installed at the center of the bottom of the stop valve cover, and a driving hand wheel is installed on the top surface of the stop valve stem.The utility model reaches the effect of double sealing with rubber sealing ring and rubber sealing sleeve, and the auxiliary connecting ring and supporting spring further improve the sealing effect.

[0004] The existing stop valve has the following deficiencies: in order to facilitate the maintenance or replacement of the valve core, the valve stem is usually connected with the valve core by a pin, and since the water flow direction in the stop valve is from bottom to top, the water flow will impact the valve core from bottom to top when the stop valve is in the open state, which has a great impact on the connection between the valve core and the valve stem, and even causes the valve core to tilt relative to the valve stem, so that the valve core cannot be completely closed. SUMMARY

[0005] The utility model aims at providing a high -efficient water -saving type water supply pipeline valve for constructional engineering.

[0006] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The utility model provides a high -efficient water -saving type water supply pipeline valve for construction engineering, including the valve body, the valve body is fixedly connected with the valve cover, the valve cover is slidably installed with the valve rod, the one end of valve rod stretches into the valve body, and the one end of valve rod is installed with the valve core in the valve body, the recess groove of being suitable for the valve core is set up to the valve cover, and the valve cover is provided with the limiting assembly, and the limiting assembly can limit the valve core in the recess groove.

[0008] The utility model discloses a water supply pipeline valve, the valve cover is seted up the filler groove on the outside of valve rod, and the valve cover is fixed with the packing gland, and the valve rod is screwed together with the packing gland, and the upper end of valve rod is installed with hand wheel.

[0009] The utility model discloses a water supply pipeline valve, and the limiting assembly includes the semicircle ring of being slidably installed in the valve cover, the inner wall of semicircle ring is provided with the second slope, and the central axis of semicircle ring and valve rod is parallel, the first spring is set up to the valve cover corresponding semicircle ring, and the first spring maintains the relative position of semicircle ring and valve cover, and the ring groove of cooperation semicircle ring is seted up to the valve core.

[0010] The utility model discloses a water supply pipeline valve, and semicircle ring is provided with two groups, and two semicircle rings are symmetrically distributed on the both sides of valve rod, and the size of two semicircle rings along the radial direction of itself is greater than the depth of ring groove.

[0011] The utility model discloses a water supply pipeline valve, and the upper end of valve rod is fixedly connected with the connecting sleeve, and the middle part of valve rod is seted up with the adjusting rod, and the upper end of adjusting rod is fixedly connected with hand wheel, and the middle part of valve core corresponding semicircle ring is seted up with the extrusion rod, and the extrusion rod is seted up one to one with semicircle ring, and the extrusion rod is all seted up along the radial direction of valve rod, and adjusting rod is driven to push extrusion rod and separate semicircle ring and valve core when moving down.

[0012] The utility model discloses a water supply pipeline valve, and adjusting rod includes the connecting section of being connected with hand wheel and the adjusting section of cooperation extrusion rod, and the first slope is seted up to the one end of each extrusion rod corresponding adjusting section, and the first slope corresponds with the edge position of adjusting rod, and the upper end of valve rod is fixedly connected with the connecting sleeve, and the middle part of hand wheel is inserted in the connecting sleeve, and the part of connecting section in the connecting sleeve is sleeved with the second spring.

[0013] The utility model discloses a water supply pipeline valve, and the notch is seted up to the adjusting section, and the notch is seted up along the radial direction of adjusting section, and the notch extends to the one end of adjusting section away from connecting section, and the width of notch is equal to the diameter of pin shaft between valve rod and valve core.

[0014] The utility model discloses a water supply pipeline valve, and the valve core includes valve plate and sealing pad, and valve rod is connected with valve plate, and recess groove is cooperated with the upper part of valve plate, and sealing pad is covered on the outside of middle part of valve plate, and sealing pad extends to the surface of valve plate and recess groove cooperation.

[0015] The utility model discloses a water supply pipeline valve, and the position of valve cover corresponding sealing pad is seted up with rubber pad.

[0016] The part of the hand wheel extending into the connecting sleeve is provided with a clamping groove, and the connecting sleeve is provided with a protrusion corresponding to the clamping groove.

[0017] In the above technical scheme, the water supply pipeline valve provided by the utility model can lock the valve core in the groove by the semicircular ring when the valve is in the fully open state, so that the impact of water flow on the valve core is avoided, the connection between the valve core and the valve rod is prevented from being damaged, and the valve core is prevented from being inclined to cause the valve to be unable to be fully closed. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the utility model, and other drawings can be obtained by those skilled in the art according to these drawings.

[0019] Figure 1 The sectional view of the valve provided by the utility model embodiment is provided.

[0020] Figure 2 The sectional view of the valve provided by the utility model embodiment is provided. Figure 1 The enlarged schematic view of A in the figure is provided.

[0021] Figure 3 The sectional view of the valve provided by the utility model embodiment is provided. Figure 1 The enlarged schematic view of B in the figure is provided.

[0022] Figure 4 The sectional view of the valve provided by the utility model embodiment is provided. Figure 2 The enlarged schematic view of C in the figure is provided.

[0023] Figure 5 The enlarged schematic view of the semicircular ring provided by the utility model embodiment is provided.

[0024] Figure 6 The enlarged schematic view of the cylindrical rod provided by the utility model embodiment is provided.

[0025] Figure 7 The connection state sectional view of the valve body and the valve cover provided by the utility model embodiment is provided.

[0026] MARKING OF DRAWINGS:

[0027] 1, valve body; 11, water inlet cavity; 12, water outlet cavity; 13, valve hole; 2, valve cover; 21, groove; 22, packing groove; 23, packing gland; 24, rubber pad; 3, valve stem; 31, connecting sleeve; 311, protrusion; 32, adjusting rod; 321, connecting section; 322, adjusting section; 323, notch; 324, first spring; 4, valve core; 41, valve plate; 42, sealing gasket; 43, ring groove; 44, extrusion rod; 441, first inclined surface; 5, limiting assembly; 51, semicircular ring; 511, second inclined surface; 52, second spring; 53, guide rod; 6, hand wheel; 61, cylindrical rod; 62, clamping groove. DETAILED DESCRIPTION

[0028] In order to make the technical personnel of the prior art better understand the technical scheme of the present application, the present application will be further described in detail below with reference to the drawings.

[0029] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more; The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation on the present application. The indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, therefore it cannot be understood as a limitation on the present application. In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; It can be mechanically connected, or it can be electrically connected; It can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] As shown in Figures 1-7 The utility model discloses a kind of high-efficiency water-saving water supply pipeline valves for constructional engineering, including valve body 1, valve body 1 is fixedly connected with valve cover 2, valve cover 2 is slidably installed with valve stem 3, one end of valve stem 3 extends into valve body 1, and valve core 4 is installed at the end of valve stem 3 in valve body 1, recess 21 of adaptation valve core 4 is formed in valve cover 2, and limiting assembly 5 is arranged on valve cover 2, limiting assembly 5 can limit valve core 4 in recess 21.

[0031] Filling groove 22 is formed on the outer side of valve stem 3 on valve cover 2, and packing gland 23 is fixed on valve cover 2, valve stem 3 is screwed with packing gland 23, and hand wheel 6 is installed on the upper end of valve stem 3.

[0032] Specifically, the valve body 1 and valve cover 2 are bolted together to form the main structure of the valve. A through hole is provided in the center of the valve cover 2, and the valve stem 3 extends into the valve body 1 through the through hole. A valve core 4 is detachably connected to one end of the valve stem 3 inside the valve body 1. The valve core 4 is connected to the valve stem 3 by a pin. The valve body 1 has an inlet chamber 11 and an outlet chamber 12 distributed vertically. Figure 1 As shown, the inlet chamber 11 is located below the outlet chamber 12, and the two are connected through the valve hole 13. Furthermore, a packing groove 22 is provided on the valve cover 2 around the valve stem 3, and a packing gland 23 is fixed to the upper part of the valve cover 2 by screws. Figure 1 As shown, the valve stem 3 passes through the packing gland 23 and is threaded to it. To facilitate the rotation of the valve stem 3, a handwheel 6 is installed at the upper end of the valve stem 3. Unlike the prior art, the valve cover 2 has a groove 21. The groove 21 is adapted to the upper part of the valve core 4, that is, the side where the valve core 4 is connected to the valve stem 3. In addition, the valve cover 2 is provided with a limiting component 5, which can restrict the valve core 4 within the groove 21.

[0033] During use, rotating the valve stem 3 by handwheel 6 will drive the valve core 4 to move axially along the valve stem 3. Within the movement stroke of the valve core 4, it has a first position and a second position:

[0034] When in the first position, the valve core 4 is inserted into the valve hole 13, separating the inlet chamber 11 and the outlet chamber 12 in the valve body 1. At this time, the valve is in the closed state.

[0035] When in the second position, the distance between the valve core 4 and the valve hole 13 is the largest. At this time, the valve is fully open. At this time, the upper part of the valve core 4 is in the groove 21 on the valve cover 2. When in this position, the limiting component 5 can restrict the valve core 4 in the groove 21 to prevent the valve core 4 from being tilted relative to the valve stem 3 due to water flow impact.

[0036] Optionally, such as Figure 2 and Figure 5 As shown, the limiting component 5 includes a semi-circular ring 51 slidably mounted within the valve cover 2. The inner wall of the semi-circular ring 51 is provided with a second inclined surface 511, as shown... Figure 5 As shown, the second inclined surface 511 is located on the side of the semicircular ring 51 facing the valve hole 13, and the central axes of the semicircular ring 51 and the valve stem 3 are parallel. A groove for accommodating the semicircular ring 51 is provided on the valve cover 2, allowing the semicircular ring 51 to slide completely into the groove. A first spring 324 is provided on the valve cover 2 at the position corresponding to the semicircular ring 51. A guide rod 53 is fixed to the outer wall of the semicircular ring 51, and the guide rod 53 is arranged radially along the semicircular ring 51, with its central axis coinciding with the axis of symmetry of the semicircular ring 51. Figure 5As shown, the first spring 324 is sleeved outside the guide rod 53, and the two ends of the first spring 324 are in contact with the inner wall of the accommodation groove and the semicircular ring 51 respectively, and the first spring 324 can maintain the relative position of the semicircular ring 51 and the valve cover 2. When the first spring 324 is in a natural state, the semicircular ring 51 extends outward from the accommodation groove, at this time, the second inclined surface 511 provided on the semicircular ring 51 is completely extended to the outside of the accommodation groove and forms Figure 2 the state shown, and the valve core 4 is provided with a ring groove 43 matched with the semicircular ring 51. When the valve core 4 is in the second position, the semicircular ring 51 extends outward from the accommodation groove to the ring groove 43 under the action of the elastic force of the first spring 324, thereby limiting the valve core 4 in the groove 21. In this way, when the water flow impacts the valve core 4, the valve core 4 is limited by the semicircular ring 51 and cannot be deviated, thereby preventing the connection position of the valve core 4 and the valve rod 3 from being damaged, and preventing the valve core 4 from tilting relative to the valve rod 3.

[0037] Preferably, the semicircular ring 51 is provided in two groups, and the size of the semicircular ring 51 along the radial direction thereof is greater than the depth of the ring groove 43. The two groups of semicircular rings 51 are arranged on the left and right sides of the valve rod 3 in the view, thereby limiting the valve core 4, which is good and comprehensive. When the semicircular ring 51 limits the valve core 4, part of the semicircular ring 51 is still in the accommodation groove, which ensures that the semicircular ring 51 has sufficient contact area with the valve cover 2. The valve core 4 is clamped in the groove 21 on the valve cover 2 by the semicircular ring 51, thereby stably limiting the valve core 4. Figure 1

[0038] Further, the middle part of the valve rod 3 is provided with an adjusting rod 32, the adjusting rod 32 is arranged along the axial direction of the valve rod 3, and the upper end of the adjusting rod 32 is fixedly connected with the hand wheel 6. The middle part of the valve core 4 corresponding to the semicircular ring 51 is provided with an extrusion rod 44, and the extrusion rod 44 is arranged one-to-one corresponding to the semicircular ring 51, and the extrusion rod 44 is arranged along the radial direction of the valve rod 3. When the adjusting rod 32 moves downward, the extrusion rod 44 drives the semicircular ring 51 to separate from the valve core 4.

[0039] Optionally, the adjusting rod 32 comprises a connecting section 321 connected with the hand wheel 6 and an adjusting section 322 matched with the extrusion rod 44. Each extrusion rod 44 is provided with a first inclined surface 441 at one end corresponding to the adjusting section 322. The upper end of the valve rod 3 is fixedly connected with a connecting sleeve 31, the middle part of the hand wheel 6 is inserted into the connecting sleeve 31, and the part of the connecting section 321 in the connecting sleeve 31 is sleeved with a second spring 52.

[0040] Preferably, the adjusting section 322 is provided with a slot 323, the slot 323 is arranged through along the radial direction of the adjusting section 322, and the slot 323 extends to one end of the adjusting section 322 away from the connecting section 321. The width of the slot 323 is equal to the diameter of the pin shaft between the valve rod 3 and the valve core 4. ​

[0041] Specifically, as shown in Figure 1 the middle part of the hand wheel 6 is protruded into the connecting sleeve 31 to form a cylindrical rod 61, and the adjusting rod 32 comprises a connecting section 321 and an adjusting section 322 connected with each other, wherein the upper end of the connecting section 321 penetrates into the connecting sleeve 31 and is connected with the cylindrical rod 61, the adjusting section 322 is located at the inner side of the end of the valve rod 3 connected with the valve core 4, and the adjusting section 322 can be extended outwards from the end of the valve rod 3 connected with the valve core 4, and the two ends of the second spring 52 arranged in the connecting sleeve 31 are in contact with the cylindrical rod 61 and the inner wall of the connecting sleeve 31 respectively, when the second spring 52 is in a natural state, the longest part of the cylindrical rod 61 extending out of the connecting sleeve 31, at this time, the adjusting section 322 is retracted into the valve rod 3; in addition, as shown in Figure 2 the first inclined surface 441 of the extruding rod 44 is provided at one end corresponding to the adjusting section 322, when the semi-circular ring 51 is extended into the ring groove 43, the upper end of the first inclined surface 441 of the extruding rod 44 corresponds to the edge position of the lower end of the adjusting section 322, so that when the adjusting section 322 is extended from the valve rod 3 into the valve core 4 by the pushing of the connecting section 321, the adjusting section 322 can slide along the first inclined surface 441 and push the extruding rod 44 to Figure 2 move the corresponding semi-circular ring 51 horizontally in the view, so as to push the semi-circular ring 51 out of the ring groove 43; in addition, in order to ensure that the hand wheel 6 can smoothly drive the valve rod 3 to rotate after being pressed at the valve rod 3, a notch 323 is provided on the adjusting section 322, the notch 323 is provided through along the radial direction of the adjusting section 322, as shown in Figure 1 and Figure 2 since the valve rod 3 is connected with the valve core 4 through a pin shaft, the notch 323 is adjusted to be opposite to the pin shaft before the hand wheel 6 is pressed, during the process that the adjusting section 322 is extended outwards from the valve rod 3, the pin shaft will be located in the notch 323, the pin shaft is driven to rotate by the adjusting section 322, and then the valve rod 3 is driven to rotate by the pin shaft, so that the valve core 4 can be adjusted between the first position and the second position, and when the pin shaft is not located in the recess 21, the hand wheel 6 can only drive the connecting section 321 and the adjusting section 322 to rotate in the valve rod 3, and the valve rod 3 itself does not rotate, so that the valve is prevented from being opened from the closed state or being closed from the opened state by mistake, especially during the maintenance process; obviously, in order to adjust the notch 323 to be opposite to the pin shaft before the hand wheel 6 is pressed each time, marks are provided on the hand wheel 6 and the valve rod 3, when the marks on the hand wheel 6 and the valve rod 3 correspond, it indicates that the notch 323 is opposite to the pin shaft, and the pin shaft can be moved into the notch 323 by directly pressing the hand wheel 6.

[0042] Further, the valve core 4 comprises a valve plate 41 and a sealing gasket 42, the valve rod 3 is connected with the valve plate 41, the recess 21 is matched with the upper part of the valve plate 41, and the sealing gasket 42 is covered on the outer side of the middle part of the valve plate 41 and extends to the surface of the valve plate 41 matched with the recess 21.

[0043] Specifically, the valve core 4 comprises a valve plate 41 and a sealing gasket 42, the valve rod 3 is connected with the valve plate 41 through a pin shaft, and the recess 21 is matched with the upper part of the valve plate 41, that is, when the valve core 4 is in the above-mentioned second position, the upper part of the valve plate 41 is in the recess 21, and the middle part of the valve plate 41 is arranged outwardly protruding, as shown in Figure 1 When the valve core 4 is in the above-mentioned first position, the lower part of the valve plate 41 extends into the valve hole 13, and the protruding position of the middle part of the valve plate 41 is in contact with the edge position of one end of the water outlet cavity 12 corresponding to the valve hole 13, the sealing gasket 42 is covered on the outer side of the protruding position of the valve plate 41, so as to improve the sealing effect of the valve plate 41 on the valve hole 13, and the sealing gasket 42 extends to the surface of the valve plate 41 matched with the recess 21, that is, the outer surface of the upper part of the valve plate 41, as shown in Figure 3 Therefore, when the valve core 4 is in the above-mentioned second position, the sealing gasket 42 can be in contact with the inner wall of the valve cover 2, the recess 21 is sealed through the cooperation of the sealing gasket 42 and the valve plate 41, and when the valve plate 41 is subjected to water pressure, the sealing gasket 42 is pressed, so as to improve the sealing effect of the sealing gasket 42, and further avoid leakage at the packing position.

[0044] Preferably, rubber pads 24 are arranged at positions corresponding to the sealing gaskets 42 on the valve cover 2, when the valve core 4 is in the second position, the sealing gaskets 42 are in contact with the rubber pads 24, so as to avoid that the valve rod 3 drives the valve core 4 to rotate synchronously when the valve rod 3 rotates, and the sealing gaskets 42 are excessively abraded.

[0045] In another embodiment of the utility model, the part of the hand wheel 6 extending into the connecting sleeve 31 is provided with a clamping groove 62, the connecting sleeve 31 is provided with a protruding block 311 corresponding to the clamping groove 62, and the protruding block 311 is matched with the clamping groove 62.

[0046] Specifically, in the above-mentioned embodiment, the cooperation of the slot 323 on the adjusting section 322 and the pin shaft enables the hand wheel 6 to drive the valve rod 3 to rotate through the adjusting rod 32 when the hand wheel 6 rotates, and with the long-time use of the valve, the middle part of the pin shaft is easily deformed due to excessive stress, so that the pin shaft cannot be removed from the valve rod 3 and the valve core 4; in the embodiment, as shown in Figure 1 and Figure 6 The hand wheel 6 is provided with a clamping groove 62, the clamping groove 62 is arranged at one end of the cylindrical rod 61 extending into the connecting sleeve 31, the connecting sleeve 31 is provided with a protruding block 311 corresponding to the clamping groove 62, and the protruding block 311 is matched with the clamping groove 62, Figure 1 Figure 1In the view, the clamping groove 62 on the hand wheel 6 is completely separated from the protrusion 311 in the connecting sleeve 31, at this time the hand wheel 6 is rotated and does not drive the valve stem 3 to rotate, and when the hand wheel 6 is pressed downward, the relative position of the adjusting section 322 and the pin shaft is adjusted, so that the pin shaft is in the slot 323, and at the same time, the clamping groove 62 on the hand wheel 6 can cooperate with the protrusion 311, thereby reducing the stress of the pin shaft when driving the valve stem 3 to rotate, and preventing the middle part of the pin shaft from being deformed due to the torsion of the adjusting section 322.

[0047] The above only describes some exemplary embodiments of the present application by way of illustration, without doubt, for ordinary skilled in the art, without departing from the spirit and scope of the present application, the described embodiments can be modified in various ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the present application.

Claims

1. A high-efficiency water-saving water supply pipeline valve for building engineering, comprising a valve body, a valve cover fixedly connected to the valve body, a valve stem slidably mounted on the valve cover, one end of the valve stem extending into the valve body, and a valve core installed at the end of the valve stem inside the valve body, characterized in that, The valve cover has a groove for fitting the valve core, and a limiting component is provided on the valve cover to restrict the valve core within the groove.

2. The high-efficiency water-saving water supply pipeline valve for building engineering according to claim 1, characterized in that, The valve cover has a packing groove on the outside of the valve stem, and a packing gland is fixed on the valve cover. The valve stem is threaded to the packing gland, and a handwheel is installed at the upper end of the valve stem.

3. A high-efficiency water-saving water supply pipeline valve for building engineering according to claim 2, characterized in that, The limiting component includes a semicircular ring that is slidably installed inside the valve cover. The inner wall of the semicircular ring is provided with a second inclined surface, and the central axes of the semicircular ring and the valve stem are parallel. A first spring is provided on the valve cover corresponding to the semicircular ring. The first spring maintains the relative position of the semicircular ring and the valve cover. The valve core is provided with an annular groove that matches the semicircular ring.

4. A high-efficiency water-saving water supply pipeline valve for building engineering according to claim 3, characterized in that, There are two sets of semicircular rings, which are symmetrically distributed on both sides of the valve stem, and the radial dimension of the two semicircular rings is greater than the depth of the ring groove.

5. A high-efficiency water-saving water supply pipeline valve for building engineering according to claim 3, characterized in that, A connecting sleeve is fixed to the upper end of the valve stem, and an adjusting rod is installed through the middle of the valve stem. The upper end of the adjusting rod is fixedly connected to the handwheel. A pressing rod is installed on the valve core corresponding to the middle of the semi-circular ring. The pressing rods are installed one-to-one with the semi-circular rings, and the pressing rods are all installed along the radial direction of the valve stem. When the adjusting rod moves down, it drives the pressing rod to push the semi-circular ring to separate from the valve core.

6. A high-efficiency water-saving water supply pipeline valve for building engineering according to claim 5, characterized in that, The adjusting rod includes a connecting section connected to the handwheel and an adjusting section that cooperates with the pressing rod. Each pressing rod has a first inclined surface at one end of the adjusting section. The first inclined surface corresponds to the edge position of the adjusting rod. A connecting sleeve is fixed to the upper end of the valve rod. The middle part of the handwheel is inserted into the connecting sleeve. A second spring is fitted inside the connecting sleeve of the connecting section.

7. A high-efficiency water-saving water supply pipeline valve for building engineering according to claim 6, characterized in that, The regulating section has a slot that runs radially through it and extends to the end of the regulating section away from the connecting section. The width of the slot is equal to the diameter of the pin between the valve stem and the valve core.

8. A high-efficiency water-saving water supply pipeline valve for building engineering according to claim 5, characterized in that, The valve core includes a valve plate and a sealing gasket. The valve stem is connected to the valve plate, the groove mates with the upper part of the valve plate, and the sealing gasket covers the outer side of the middle part of the valve plate and extends to the surface of the valve plate that mates with the groove.

9. A high-efficiency water-saving water supply pipeline valve for building engineering according to claim 8, characterized in that, Rubber gaskets are installed on the valve cover at the positions corresponding to the sealing gaskets.

10. A high-efficiency water-saving water supply pipeline valve for building engineering according to claim 7, characterized in that, The part of the handwheel that extends into the connecting sleeve has a slot, and a protrusion is provided at the corresponding position of the slot inside the connecting sleeve. The protrusion and the slot cooperate with each other.

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