Three-way hard sealing ball valve
By using replaceable ceramic valve seats and valve port rings in the tee-way hard seal ball valve, the problem of reduced sealing performance and high replacement cost is solved due to wear, and maintenance and replacement cost is achieved.
Patent Information
- Application Number
- CN202421931028.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-11
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-08-11
AI Technical Summary
The existing three-way hard seal ball valves are easily affected by friction inside the fluid during use, resulting in scraping of the hard seal and the spherical valve core surface, which reduces the sealing effect. At the same time, since the entire spherical valve core is cast in one piece, the replacement cost is higher.
A three-way hard sealed ball valve is designed, which includes an alternative ceramic valve seat and an alternative valve opening ring, through the contact seal of these components, when wear occurs, it can be directly removed and replaced, reducing replacement costs.
The sealing effect is maintained through the replaceable ceramic valve seat and valve opening ring, reducing replacement costs and avoiding the problem of degradation of sealing due to wear.
Smart Images
Figure CN222798213U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valve bodies, in particular to a three-way hard-sealed ball valve. Background Art
[0002] The three-way hard-sealed ball valve is a ball valve with a three-way pipe. At the same time, metal parts or other hard seals are used for contact sealing inside. Compared with soft-sealed valves, it has a longer service life, but it is easily affected by the friction of impurities inside the fluid, causing scratches on the hard seal and the surface of the spherical valve core, resulting in a decrease in the sealing effect.
[0003] However, in actual use, as the surface of the valve seat and the spherical valve core wears, the sealing performance will gradually decrease. Through research, it is found that the main sealing function is the outer surfaces at both ends of the internal opening of the valve core and the valve seat. When this part is worn, the sealing performance will be reduced. If this part is not worn, even if other parts of the entire spherical valve core are worn, it will not affect the sealing effect during use. In the prior art, the entire spherical valve core is cast as an integral part, and the replacement cost is high. For this purpose, a three-way hard-sealed ball valve is specially provided to solve the above problem. Utility Model Content
[0004] In view of the shortcomings of the prior art, the utility model provides a three-way hard-sealed ball valve, which solves the problem that the existing three-way hard-sealed ball valve mainly plays a sealing role at the outer surfaces at both ends of the internal opening of the valve core and the valve seat. If this part is not worn, even if other parts of the entire spherical valve core are worn, it will not affect the sealing effect during use. In the prior art, the entire spherical valve core is cast as an integral part, and the replacement cost is high.
[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a three-way hard-sealed ball valve, comprising a valve body and a spherical valve core installed inside the valve body, the top of the valve body is rotatably connected with a valve stem, the spherical valve core comprises a valve core body and a replaceable valve port ring, the valve core body is rotatably connected to the inside of the valve body, and the replaceable valve port ring is movably clamped on the outer surface of the valve core body;
[0006] A ceramic valve seat is movably inserted into the inner wall of the valve body, and the replaceable valve port ring abuts against the ceramic valve seat.
[0007] Preferably, a connecting flange pipe is integrally cast on the outer surface of the valve body, and the ceramic valve seat is movably plugged into the inner wall of the connecting flange pipe.
[0008] Preferably, a positioning shaft is fixedly welded to the inner side of the replaceable valve port ring, a positioning hole is opened on the outer surface of the valve core body, and the positioning shaft is movably inserted into the interior of the positioning hole.
[0009] Preferably, a hexagonal connecting groove is provided on the top of the valve core body, and the bottom end of the valve stem is movably inserted into the hexagonal connecting groove.
[0010] Preferably, the valve stem includes a rotating sleeve, an annular handle and an external hexagonal shaft, the rotating sleeve is fixedly sleeved on the outer surface of the external hexagonal shaft, the bottom end of the external hexagonal shaft is movably inserted in the hexagonal connecting groove, and the annular handle is fixedly mounted on the top outer surface of the external hexagonal shaft.
[0011] Preferably, a valve cover is fixedly mounted on the top of the valve body, a sealing member is mounted between the valve body and the valve cover, and the rotating sleeve is rotationally sealedly connected to the valve cover.
[0012] Preferably, a slot is provided on the outer surface of the upper end of the external hexagonal shaft, an anti-slip strip is movably inserted inside the slot, the anti-slip strip abuts against the top of the annular handle, the top end of the external hexagonal shaft is threadedly connected with a fixing stud, and the fixing stud passes through the anti-slip strip.
[0013] The utility model discloses a three-way hard-sealed ball valve, which has the following beneficial effects: a detachable ceramic valve seat is installed at the position where the valve body is connected to a connecting flange pipe, and replaceable valve port rings are installed at the openings at both ends of the valve core body; when in use, when the replaceable valve port ring and the ceramic valve seat are directly opposite to each other, the connecting flange pipes at both ends are connected through the spherical valve core, and at this time, contact sealing is performed by the ceramic valve seat and the replaceable valve port ring. When the ceramic valve seat and the replaceable valve port ring are worn and the sealing fails, the ceramic valve seat and the replaceable valve port ring can be disassembled and replaced, thereby reducing the replacement cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 This is a schematic diagram of the overall outer surface structure of the utility model;
[0016] Figure 2 This is a cross-sectional view of the internal structure of the valve body of the utility model;
[0017] Figure 3 This is an exploded view of the outer surface structure of the spherical valve core of the utility model;
[0018] Figure 4 This is a schematic diagram of the inner wall structure of the valve body of the utility model;
[0019] Figure 5 It is an exploded view of the outer surface structure of the valve stem of the utility model.
[0020] In the figure: 1. valve body; 2. valve cover; 3. valve stem; 31. rotating sleeve; 32. ring handle; 33. external hexagonal shaft; 34. slot; 35. anti-slip strip; 36. fixing stud; 4. spherical valve core; 41. valve core body; 42. hexagonal connecting groove; 43. replaceable valve mouth ring; 44. positioning shaft; 45. positioning hole; 5. sealing element; 6. connecting flange pipe; 7. ceramic valve seat. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] The embodiment of the present application solves the problem of the existing three-way hard-sealed ball valve by providing a three-way hard-sealed ball valve, in which the main sealing function is the outer surfaces at both ends of the internal opening of the valve core and the valve seat. If this part is not worn, even if other parts of the entire spherical valve core are worn, it will not affect the sealing effect during use. In the prior art, the entire spherical valve core is cast as an integral part, which has the problem of high replacement cost.
[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0024] The utility model embodiment discloses a three-way hard-sealed ball valve.
[0025] According to the attached Figure 1-5 As shown, it includes a valve body 1 and a spherical valve core 4 installed inside the valve body 1, the top of the valve body 1 is rotatably connected to a valve stem 3, the spherical valve core 4 includes a valve core body 41 and a replaceable valve port ring 43, the valve core body 41 is rotatably connected to the inside of the valve body 1, and the replaceable valve port ring 43 is movably clamped on the outer surface of the valve core body 41;
[0026] A ceramic valve seat 7 is movably inserted into the inner wall of the valve body 1 , and a replaceable valve port ring 43 abuts against the ceramic valve seat 7 . A connecting flange pipe 6 is integrally cast on the outer surface of the valve body 1 , and the ceramic valve seat 7 is movably inserted into the inner wall of the connecting flange pipe 6 .
[0027] When in use, when the replaceable valve ring 43 and the ceramic valve seat 7 are directly opposite to each other, the flange pipes 6 at both ends are connected through the spherical valve core 4. At this time, the ceramic valve seat 7 and the replaceable valve ring 43 are in contact and sealed. When the ceramic valve seat 7 and the replaceable valve ring 43 are worn and the seal fails, the ceramic valve seat 7 and the replaceable valve ring 43 can be disassembled and replaced, thereby reducing the replacement cost.
[0028] A positioning shaft 44 is fixedly welded to the inner side of the replaceable valve mouth ring 43, and a positioning hole 45 is opened on the outer surface of the valve core body 41. The positioning shaft 44 is movably inserted into the inside of the positioning hole 45, so that the replaceable valve mouth ring 43 can be tightly attached to the outer wall of the valve core body 41 to prevent it from sliding and rotating.
[0029] A hexagonal connecting groove 42 is provided at the top of the valve core body 41, and the bottom end of the valve stem 3 is movably inserted into the inside of the hexagonal connecting groove 42. The valve stem 3 includes a rotating sleeve 31, an annular handle 32 and an outer hexagonal shaft 33. The rotating sleeve 31 is fixedly sleeved on the outer surface of the outer hexagonal shaft 33, and the bottom end of the outer hexagonal shaft 33 is movably inserted into the hexagonal connecting groove 42. The annular handle 32 is fixedly installed on the top outer surface of the outer hexagonal shaft 33. A slot 34 is provided on the upper outer surface of the outer hexagonal shaft 33. An anti-slip strip 35 is movably inserted into the inside of the slot 34. The anti-slip strip 35 is abutted against the top of the annular handle 32. A fixing stud 36 is threadedly connected to the top of the outer hexagonal shaft 33, and the fixing stud 36 passes through the anti-slip strip 35. A valve cover 2 is fixedly installed on the top of the valve body 1, and a sealing member 5 is installed between the valve body 1 and the valve cover 2. The rotating sleeve 31 is rotatably sealed and connected to the valve cover 2.
[0030] Unscrew the fixing stud 36, then pull out the anti-slip strip 35 from the slot 34, then lift the annular handle 32 upwards, remove the valve cover 2 and the seal 5, then take out the spherical valve core 4 and the ceramic valve seat 7, and replace the replaceable valve mouth ring 43 and the ceramic valve seat 7.
[0031] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A three-way hard-sealed ball valve, comprising a valve body (1) and a spherical valve core (4) installed inside the valve body (1), wherein the top of the valve body (1) is rotatably connected to a valve stem (3), characterized in that: The spherical valve core (4) comprises a valve core body (41) and a replaceable valve port ring (43), wherein the valve core body (41) is rotatably connected to the inside of the valve body (1), and the replaceable valve port ring (43) is movably clamped on the outer surface of the valve core body (41); A ceramic valve seat (7) is movably inserted into the inner wall of the valve body (1), and the replaceable valve port ring (43) abuts against the ceramic valve seat (7).
2. A three-way hard-sealed ball valve according to claim 1, characterized in that: The outer surface of the valve body (1) is integrally cast with a connecting flange pipe (6), and the ceramic valve seat (7) is movably plugged into the inner wall of the connecting flange pipe (6).
3. A three-way hard-sealed ball valve according to claim 1, characterized in that: A positioning shaft (44) is fixedly welded to the inner side of the replaceable valve port ring (43), a positioning hole (45) is opened on the outer surface of the valve core body (41), and the positioning shaft (44) is movably inserted into the interior of the positioning hole (45).
4. A three-way hard-sealed ball valve according to claim 3, characterized in that: A hexagonal connecting groove (42) is provided on the top of the valve core body (41), and the bottom end of the valve stem (3) is movably inserted into the inside of the hexagonal connecting groove (42).
5. A three-way hard-sealed ball valve according to claim 4, characterized in that: The valve stem (3) comprises a rotating sleeve (31), an annular handle (32) and an outer hexagonal shaft (33); the rotating sleeve (31) is fixedly sleeved on the outer surface of the outer hexagonal shaft (33); the bottom end of the outer hexagonal shaft (33) is movably inserted into the hexagonal connecting groove (42); and the annular handle (32) is fixedly mounted on the top outer surface of the outer hexagonal shaft (33).
6. A three-way hard-sealed ball valve according to claim 5, characterized in that: A valve cover (2) is fixedly mounted on the top of the valve body (1), a sealing member (5) is mounted between the valve body (1) and the valve cover (2), and the rotating sleeve (31) is connected to the valve cover (2) in a rotating sealing manner.
7. A three-way hard-sealed ball valve according to claim 5, characterized in that: A slot (34) is provided on the outer surface of the upper end of the external hexagonal shaft (33), and an anti-slipping strip (35) is movably inserted into the interior of the slot (34), and the anti-slipping strip (35) abuts against the top of the annular handle (32). A fixing stud (36) is threadedly connected to the top of the external hexagonal shaft (33), and the fixing stud (36) passes through the anti-slipping strip (35).