Liftable stop valve device

Abstract

The utility model relates to the technical field of valves, in particular to a liftable stop valve device which comprises a stop valve body and a water outlet connector, the stop valve body comprises a valve seat, a valve rod and a hand wheel, the valve rod is rotatably arranged in the valve seat and is in threaded connection with the valve seat, the top of the valve rod extends to the upper portion of the valve seat and is fixedly provided with a connecting square rod, and the connecting square rod is connected with the hand wheel. The connecting square rod and the valve seat are sleeved with the hand wheel, a connecting square groove matched with the connecting square rod is formed in the top of an inner cavity of the hand wheel, semicircular locking grooves are formed in the inner cavity of the hand wheel and the outer portion of the valve seat, and an opening clamping spring is arranged between the two locking grooves. A sealing seat is detachably arranged at the bottom of the valve rod through a clamping seat, the bottom face of the sealing seat is in contact fit with the top face of the water outlet connector, and a sealing antifouling device is arranged between the valve seat and the valve rod.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a liftable stop valve device. Background Art

[0002] The globe valve is one of the most widely used valves. Its popularity stems from its low friction between the sealing surfaces during opening and closing, its durability, its low opening height, its ease of manufacture, and its convenient maintenance. It is suitable for both low and medium pressures, as well as high pressures. The closing principle of a globe valve is that the valve stem pressure forces the disc sealing surface to tightly fit the seat sealing surface, preventing the flow of media.

[0003] Existing valve structures often consist of a valve body, stem, linkage, seals, and other components, resulting in a large number of parts. Furthermore, most existing valves utilize a single-pass seal, resulting in poor sealing reliability and lacking anti-sand and anti-fouling features. Furthermore, valve assembly requires tools such as screws, decorative covers, and assembly wrenches when assembling the handwheel, making assembly complex. Therefore, a retractable stop valve device is urgently needed. Utility Model Content

[0004] The purpose of the utility model is to provide a liftable stop valve device.

[0005] A liftable stop valve device comprises a stop valve body and a water outlet joint, the stop valve body comprises a valve seat, a valve stem and a handwheel, the valve stem is rotatably set in the valve seat and is threadedly connected thereto, the top of the valve stem extends to the upper part of the valve seat and is fixedly provided with a connecting square rod, the handwheel is sleeved on the outside of the connecting square rod and the valve seat, the top of the inner cavity of the handwheel is provided with a connecting square groove that cooperates with the connecting square rod, the inner cavity of the handwheel and the outside of the valve seat are both provided with semicircular locking grooves, an open retaining spring is provided between the two locking grooves, the bottom of the valve stem is detachably provided with a sealing seat through a clamping seat, the bottom surface of the sealing seat is in contact with and cooperates with the top surface of the water outlet joint, and a sealing and anti-fouling device is provided between the valve seat and the valve stem.

[0006] Furthermore, the sealing and anti-fouling device includes an anti-fouling sealing groove and an anti-fouling sealing ring. A plurality of anti-fouling sealing grooves are opened on the outside of the valve stem. An anti-fouling sealing ring is detachably arranged in the anti-fouling sealing groove, and the anti-fouling sealing ring contacts and cooperates with the inner cavity of the valve seat.

[0007] Furthermore, a valve seat sealing ring is detachably provided on the outside of the valve seat.

[0008] In summary, the present invention has the following beneficial effects:

[0009] The open retaining ring of this utility model connects the handwheel and valve seat through the engagement of the locking groove, resulting in a simple structure and easy assembly. Multiple anti-fouling sealing rings are provided between the valve seat and the valve stem, effectively improving the sealing between the valve seat and the valve stem, preventing liquid leakage and preventing dirt, rust, and sediment in the liquid from entering the threaded connection between the valve seat and the valve stem, which could cause the threads of the valve seat and the valve stem to become immobilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0011] Figure 1 This is a front sectional view of a liftable stop valve device of the utility model;

[0012] Figure 2 This is an exploded view of the stop valve body of the present utility model;

[0013] Figure 3 This is a front cross-sectional view of the utility model installed on a pipe body.

[0014] In the figure: 1 tube body, 2 valve seat, 3 valve stem, 4 handwheel, 5 locking groove, 6 open retaining ring, 7 sealing seat, 8 clamping seat, 9 anti-fouling sealing groove, 10 anti-fouling sealing ring, 11 valve seat sealing ring, 12 water outlet joint, 13 connecting square rod, 14 connecting square groove. DETAILED DESCRIPTION

[0015] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] The following is combined with Figure 1-3 The utility model is further described as follows:

[0017] A liftable stop valve device comprises a stop valve body and a water outlet joint 12. The stop valve body comprises a valve seat 2, a valve stem 3 and a handwheel 4. The valve stem 3 is rotatably arranged in the valve seat 2 and is threadedly connected thereto. The top of the valve stem 3 extends to the upper part of the valve seat 2 and is fixedly provided with a connecting square rod 13. The handwheel 4 is sleeved on the outside of the connecting square rod 13 and the valve seat 2. The top of the inner cavity of the handwheel 4 is provided with a connecting square groove 14 that cooperates with the connecting square rod 13. The inner cavity of the handwheel 4 and the outside of the valve seat 2 are both provided with a semicircular locking groove 5. An open retaining spring 6 is provided between the two locking grooves 5. The bottom of the valve stem 3 is detachably provided with a sealing seat 7 through a clamping seat 8. The bottom surface of the sealing seat 7 contacts and cooperates with the top surface of the water outlet joint 12. A sealing and anti-fouling device is provided between the valve seat 2 and the valve stem 3.

[0018] In this embodiment, the shutoff valve body and the water outlet connector 12 are respectively mounted at the top and bottom of the pipe body 1. The shutoff valve body and the water outlet connector 12 work together to open and close the water outlet connector 12, controlling the flow of liquid from the pipe body 1 into the water outlet connector 12. The valve seat 2 and the water outlet connector 12 respectively penetrate the top and bottom surfaces of the pipe body 1 and are sealed therewith. Preferably, a valve seat sealing ring 11 is disposed between the valve seat 2 and the pipe body 1 to provide a more reliable seal at the joint.

[0019] The handwheel 4 and valve seat 2 are connected via a locking groove 5 and an open retaining spring 6. Preferably, the open retaining spring 6 is first installed in the locking groove 5 on the outside of the valve seat 2. The handwheel 4 is then placed over the outside of the valve seat 2. The handwheel 4 is then pressed downward. The open retaining spring 6 is squeezed, deformed, and reduced in size. The open retaining spring 6 then squeezes into the locking groove 5 within the inner cavity of the handwheel 4 and deforms back to its original size. The open retaining spring 6, engaged with the locking groove 5, connects the handwheel 4 and valve seat 2, resulting in a simple structure and easy assembly.

[0020] The valve stem 3 is rotatably arranged in the valve seat 2 and is threadedly connected to the valve seat 2. The handwheel 4 and the valve stem 3 are connected by a connecting square rod 13 and a connecting square groove 14. When the handwheel 4 is turned, the valve stem 3 rises and falls synchronously along the valve seat 2 through the connected threads. When the handwheel 4 is turned forward, the valve stem 3 rotates synchronously, and the sealing seat 7 at the bottom of the valve stem 3 moves downward and contacts the water outlet joint 12. The sealing seat 7 seals the water outlet joint 12, and the liquid in the pipe body 1 cannot enter the water outlet joint 12; when the handwheel 4 is turned backward, the valve stem 3 rotates synchronously, and the sealing seat 7 at the bottom of the valve stem 3 moves upward and separates from the water outlet joint 12. The water outlet joint 12 opens, and the liquid in the pipe body 1 enters the water outlet joint 12 and is discharged from the water outlet joint 12.

[0021] The sealing and anti-fouling device includes an anti-fouling sealing groove 9 and an anti-fouling sealing ring 10. A plurality of anti-fouling sealing grooves 9 are opened on the outside of the valve stem 3. An anti-fouling sealing ring 10 is detachably arranged in the anti-fouling sealing groove 9. The anti-fouling sealing ring 10 contacts and cooperates with the inner cavity of the valve seat 2.

[0022] In this embodiment, liquid leaks through the gap between the valve seat 2 and the valve stem 3, and dirt, rust, silt, etc. in the liquid enter the threaded connection between the valve seat 2 and the valve stem 3, causing the threads of the valve seat 2 and the valve stem 3 to be unable to rotate. Therefore, the sealing and anti-fouling device provided between the valve seat 2 and the valve stem 3 can prevent the liquid in the pipe body 1 from leaking from the gap between the valve seat 2 and the valve stem 3, and can prevent dirt, rust, silt, etc. in the liquid from entering the threaded connection between the valve seat 2 and the valve stem 3. Preferably, a plurality of anti-fouling sealing rings 10 are provided between the valve seat 2 and the valve stem 3, which can effectively improve the sealing between the valve seat 2 and the valve stem 3, prevent liquid leakage, and prevent dirt, rust, silt, etc. in the liquid from entering the threaded connection between the valve seat 2 and the valve stem 3, causing the threads of the valve seat 2 and the valve stem 3 to be unable to rotate.

[0023] In summary, the present invention is not limited to the above-described specific embodiments. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be based on the claims of the present invention.

[0024] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this patent.

[0025] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

Claims

1. A liftable stop valve device, characterized in that: The invention comprises a stop valve body and a water outlet joint (12), wherein the stop valve body comprises a valve seat (2), a valve stem (3) and a hand wheel (4), wherein the valve stem (3) is rotatably arranged in the valve seat (2) and is threadedly connected thereto, wherein the top of the valve stem (3) extends to the upper part of the valve seat (2) and is fixedly provided with a connecting square rod (13), wherein the hand wheel (4) is sleeved on the outside of the connecting square rod (13) and the valve seat (2), and the top of the inner cavity of the hand wheel (4) is provided with a connecting square rod. (13) and a matching connecting square groove (14), the inner cavity of the hand wheel (4) and the outer portion of the valve seat (2) are both provided with a semicircular locking groove (5), an open retaining spring (6) is provided between the two locking grooves (5), the bottom of the valve stem (3) is detachably provided with a sealing seat (7) through a clamping seat (8), the bottom surface of the sealing seat (7) is in contact with the top surface of the water outlet joint (12), and a sealing anti-fouling device is provided between the valve seat (2) and the valve stem (3).

2. A liftable stop valve device according to claim 1, characterized in that: The sealing and anti-fouling device comprises an anti-fouling sealing groove (9) and an anti-fouling sealing ring (10). The valve stem (3) is provided with a plurality of anti-fouling sealing grooves (9) on the outside. The anti-fouling sealing ring (10) is detachably provided in the anti-fouling sealing groove (9). The anti-fouling sealing ring (10) contacts and cooperates with the inner cavity of the valve seat (2).

3. A liftable stop valve device according to claim 2, characterized in that: A valve seat sealing ring (11) is detachably provided on the outside of the valve seat (2).

Images