A double ball valve body and valve

Abstract

This utility model provides a double-ball valve body and valve, belonging to the field of valve technology. It solves the technical problems such as inconvenient installation of existing double-ball valve bodies. A double-ball valve body includes a valve body with a first ball cavity, a second ball cavity, a first mounting groove, and a second mounting groove within it. The valve body also has an axially parallel first mounting seat and a second mounting seat. The first mounting seat has a first mounting hole communicating with the first ball cavity. The second mounting seat has a second mounting hole communicating with the second ball cavity. A positioning groove is provided between the first and second mounting seats. A first positioning block is located between the positioning groove and the first mounting seat, and a second positioning block is located between the positioning groove and the second mounting seat. This utility model has the advantages of improving assembly efficiency and precision.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and specifically refers to a double ball valve body and valve. Background Technology

[0002] Locking valves are critical devices in pipeline systems for controlling fluid flow, especially in heating and water supply systems where both sealing performance and operational safety must be considered. Existing technology, such as prior art document CN219299979U, proposes a combined dual-control locking valve, which integrates a manual ball valve ball and a locking ball valve ball within a single valve body to achieve dual on / off and locking functions. However, installing the ball and seals requires a step-by-step positioning process. First, the manual ball valve ball needs to be independently positioned and installed, its stem and first protruding neck aligned, and the seals installed. After this, the locking ball valve ball needs to be positioned a second time, adjusting the alignment of the second valve stem 5 at a 90° angle with the second protruding neck, before installing the magnetic pin, locking groove, and other locking components. The overlapping positioning operations during these two steps can easily lead to misalignment due to tool interference. The step-by-step installation also results in the superposition of coaxiality errors between the first and second balls, directly affecting the synchronous sealing performance of the two valves, requiring additional calibration procedures. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide a double-ball valve body and valve. The technical problem this invention aims to solve is how to achieve synchronous and precise positioning and installation of the two ball cores in a double-ball valve. This avoids the accumulation of coaxiality errors, interference with operating space, and additional correction processes caused by step-by-step assembly, thereby improving assembly efficiency and sealing reliability.

[0004] The objective of this utility model can be achieved through the following technical solution: A double-ball valve body includes a valve body, wherein a first ball cavity and a second ball cavity are provided within the valve body and are interconnected. A first mounting groove is provided on the side of the first ball cavity near the second ball cavity, and the diameter of the first ball cavity is larger than the diameter of the first mounting groove. A second mounting groove is provided on the side of the second ball cavity near the first ball cavity, and the diameter of the second ball cavity is larger than the diameter of the second mounting groove. The valve body is also provided with an axially parallel first mounting seat and a second mounting seat. A first mounting hole is provided in the first mounting seat and is connected to the first ball cavity. A second mounting hole is provided in the second mounting seat and is connected to the second ball cavity. A positioning groove is provided between the first mounting seat and the second mounting seat. A first positioning block is provided between the positioning groove and the first mounting seat. A second positioning block is provided between the positioning groove and the second mounting seat. The double ball valve body of this solution is integrally cast. The positioning groove, first positioning block and second positioning block integrally cast in the valve body can be quickly matched with tooling fixtures to achieve synchronous and precise installation of the first ball core, second ball core and first and second sealing elements. This greatly reduces step assembly errors, improves assembly efficiency and accuracy, and is suitable for mass production.

[0005] Furthermore, a first annular stop is provided on the right side of the first mounting groove, and a second annular stop is provided on the left side of the second mounting groove. A recessed water passage groove is formed between the first and second annular stop blocks. The water passage groove formed by the first and second annular stop blocks can guide the fluid to pass smoothly through the double spherical cavity, reduce turbulent impact, and lower the risk of seal wear.

[0006] Furthermore, the outer diameter of the positioning groove is larger than the outer diameter of the first positioning block and the second positioning block.

[0007] Furthermore, the outer diameter of the positioning groove is smaller than the outer diameter of the first positioning block and the second positioning block.

[0008] A valve includes a double-ball valve body. A first ball core is disposed in a first ball cavity, and a second ball core is disposed in a second ball cavity. A first valve cap is fixedly connected to the side of the first ball cavity away from the second ball cavity. The first valve cap has a third mounting groove. A first sealing element is fixedly disposed in the first mounting groove and the third mounting groove, and the first sealing element seals against the first ball core. A second valve cap is fixedly connected to the side of the second ball cavity away from the first ball cavity. The second valve cap has a fourth mounting groove. A second sealing element is fixedly disposed in the second mounting groove and the fourth mounting groove, and the second sealing element seals against the second ball core.

[0009] Furthermore, a first valve stem is rotatably and sealed within the first mounting hole, and the first valve stem and the first ball core are engaged and fixed together. The first valve stem extends out of the first mounting hole and is fixedly connected to a handle.

[0010] Furthermore, the first mounting hole has a first positioning hole on the side near the first ball cavity. The diameter of the first positioning hole is larger than that of the first mounting hole. The first positioning hole and the first mounting hole are connected by a first convex arc surface. The first valve stem has a first limiting block located within the first positioning hole. The first limiting block and the first valve stem are connected by a first concave arc surface, which abuts against the first convex arc surface. The first valve stem and the first mounting hole are fitted together by the first convex arc surface and the first concave arc surface, reducing rotational friction resistance, preventing the first valve stem from jamming, and extending the valve's service life.

[0011] Furthermore, the second mounting hole is rotatably fitted with a second valve stem, which engages and is fixed to the second ball core. The second mounting hole has a second positioning hole on the side near the second ball cavity, the diameter of which is larger than that of the second mounting hole. The second positioning hole and the second mounting hole are connected by a second convex arc surface. The second valve stem has a second limiting block located within the second positioning hole. The second limiting block and the second valve stem are connected by a second concave arc surface, which abuts against the second convex arc surface. The second valve stem and the second mounting hole cooperate through the second convex arc surface and the second concave arc surface structure, reducing rotational friction resistance, preventing the second valve stem from jamming, and extending the valve's service life. The second valve stem extends out of the second mounting hole and is fixedly connected to a hexagonal locking cap.

[0012] Compared with existing technologies, the technical advantages of this utility model are as follows: 1. The positioning groove, first positioning block, and second positioning block, integrally cast in the valve body, work in conjunction with tooling fixtures to achieve synchronous and precise positioning and installation of the double ball core and the sealing element. This avoids the accumulation of coaxiality errors, interference with operating space, and additional correction processes caused by step-by-step assembly, thereby improving assembly efficiency and sealing reliability, and is especially suitable for mass production. 2. The nested structure of the mounting groove and the valve cap forms a compact sealing space, enhancing the clamping force of the sealing element on the ball core; the valve stem and mounting hole, through the convex-concave arc surface fit, significantly reduce rotational friction resistance, prevent valve stem jamming, and extend the valve's service life. Attached Figure Description

[0013] Figure 1 This is a three-dimensional view of the valve of this utility model.

[0014] Figure 2 This is a cross-sectional view of the valve body of this utility model.

[0015] Figure 3This is a schematic diagram of the valve of this utility model.

[0016] Figure 4 This is a cross-sectional view of the valve of this utility model.

[0017] Figure 5 This is an enlarged view of section A of this utility model.

[0018] Figure 6 This is an enlarged view of section B of this utility model.

[0019] Drawing number explanation: 1. Valve body; 101. First ball cavity; 102. Second ball cavity; 103. First mounting groove; 104. Second mounting groove; 105. First mounting seat; 106. Second mounting seat; 107. First mounting hole; 108. Second mounting hole; 109. Positioning groove; 110. First positioning block; 111. Second positioning block; 112. First annular stop block; 113. Second annular stop block; 114. Water passage groove; 115. First positioning hole; 116. First convex arc surface; 117. Second positioning hole; 118. Second convex arc surface; 2. First ball core; 3. First valve cap; 301. Third mounting groove; 4. First seal; 5. Second valve cap; 501. Fourth mounting groove; 6. Second seal; 7. Handle; 8. First valve stem; 801. First limiting block; 802. First concave arc surface; 9. Second valve stem; 901. Second limiting block; 902. Second concave arc surface; 10. Hexagonal locking cover; 11. Second ball core; 12. Sealing ring one; 13. Sealing ring two. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] It should be noted that the descriptions of "up", "down", "left", "right", "top", "bottom", etc. in this utility model are defined based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] according to Figures 1 to 3As shown, a double-ball valve body includes a valve body 1. The valve body 1 has a first ball cavity 101 and a second ball cavity 102 that are interconnected. A first mounting groove 103 is provided on the side of the first ball cavity 101 near the second ball cavity 102, and the diameter of the first ball cavity 101 is larger than the diameter of the first mounting groove 103. A second mounting groove 104 is provided on the side of the second ball cavity 102 near the first ball cavity 101, and the diameter of the second ball cavity 102 is larger than the diameter of the second mounting groove 104. The valve body 1 also has an axially parallel first mounting seat 1. The first mounting base 105 has a first mounting hole 107 that communicates with the first ball cavity 101. The second mounting base 106 has a second mounting hole 108 that communicates with the second ball cavity 102. A positioning groove 109 is provided between the first mounting base 105 and the second mounting base 106. A first positioning block 110 is located between the positioning groove 109 and the first mounting base 105, and a second positioning block 111 is located between the positioning groove 109 and the second mounting base 106. The valve body of this double ball valve is integrally cast. The positioning groove 109, the first positioning block 110, and the second positioning block 111 integrally cast in the valve body 1 can be quickly matched with tooling fixtures to achieve synchronous and precise installation of the first ball core 2, the second ball core 11, the first seal 4, and the second seal 6. This significantly reduces step assembly errors, improves assembly efficiency and accuracy, and is suitable for mass production.

[0023] A first annular stop 112 is provided on the right side of the first mounting groove 103, and a second annular stop 113 is provided on the left side of the second mounting groove 104. A recessed water passage groove 114 is formed between the first annular stop 112 and the second annular stop 113. The water passage groove 114 formed by the first annular stop 112 and the second annular stop 113 can guide the fluid to pass smoothly through the double ball cavity, reduce turbulent impact, and reduce the risk of seal wear. Figure 1 and Figure 2 The outer diameter of the positioning groove 109 shown is smaller than the outer diameter of the first positioning block 110 and the second positioning block 111. For example... Figure 3 The outer diameter of the positioning groove 109 shown is larger than the outer diameter of the first positioning block 110 and the second positioning block 111.

[0024] according to Figures 4 to 6As shown, a valve includes the aforementioned double-ball valve body. A first ball core 2 is disposed in a first ball cavity 101, and a second ball core 11 is disposed in a second ball cavity 102. A first valve cap 3 is fixedly connected to the side of the first ball cavity 101 away from the second ball cavity 102. The first valve cap 3 has a third mounting groove 301. A first sealing element 4 is fixedly disposed in the first mounting groove 103 and the third mounting groove 301, and the first sealing element 4 and the first ball core 2 are sealed against each other. A second valve cap 5 is fixedly connected to the side of the second ball cavity 102 away from the first ball cavity 101. The second valve cap 5 has a fourth mounting groove 501. A second sealing element 6 is fixedly disposed in the second mounting groove 104 and the fourth mounting groove 501, and the second sealing element 6 and the second ball core 11 are sealed against each other. A first valve stem 8 is rotatably disposed in a first mounting hole 107, and the first valve stem 8 is engaged and fixedly fixed to the first ball core 2. The first valve stem 8 extends out of the first mounting hole 107 and is fixedly connected to a handle 7.

[0025] The first mounting hole 107 has a first positioning hole 115 on the side near the first ball cavity 101. The diameter of the first positioning hole 115 is larger than the diameter of the first mounting hole 107. The first positioning hole 115 and the first mounting hole 107 are connected by a first convex arc surface 116. The first valve stem 8 has a first limiting block 801, which is located inside the first positioning hole 115. The first limiting block 801 and the first valve stem 8 are connected by a first concave arc surface 802, which abuts against the first convex arc surface 116. The first valve stem 8 and the first mounting hole 107 are structurally matched by the first convex arc surface 116 and the first concave arc surface 802, which reduces rotational friction resistance, prevents the first valve stem 8 from jamming, and extends the service life of the valve. The second mounting hole 108 is rotatably fitted with a second valve stem 9, which engages and is fixed to the second ball core 11. The second mounting hole 108 has a second positioning hole 117 on the side near the second ball cavity 102. The diameter of the second positioning hole 117 is larger than that of the second mounting hole 108. The second positioning hole 117 and the second mounting hole 108 are connected by a second convex arc surface 118. The second valve stem 9 has a second limiting block 901 located within the second positioning hole 117. The second limiting block 901 and the second valve stem 9 are connected by a second concave arc surface 902, which abuts against the second convex arc surface 118. The second valve stem 9 and the second mounting hole 108 are structurally matched by the second convex arc surface 118 and the second concave arc surface 902, reducing rotational friction resistance, preventing the second valve stem 9 from jamming, and extending the valve's service life. The second valve stem 9 extends out of the second mounting hole 108 and is fixedly connected to a hexagonal locking cap 10. A sealing ring 12 is provided between the first valve stem 8 and the first mounting hole 107, and a sealing ring 13 is provided between the second valve stem 9 and the second mounting hole 108.

[0026] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection defined by the claims of the present utility model.

Claims

1. A double-ball valve body, comprising a valve body (1), wherein a first ball cavity (101) and a second ball cavity (102) are provided in the valve body (1) and are interconnected; a first mounting groove (103) is provided on the side of the first ball cavity (101) near the second ball cavity (102), the diameter of the first ball cavity (101) is larger than the diameter of the first mounting groove (103); a second mounting groove (104) is provided on the side of the second ball cavity (102) near the first ball cavity (101), the diameter of the second ball cavity (102) is larger than the diameter of the second mounting groove (104), characterized in that: The valve body (1) is further provided with an axially parallel first mounting seat (105) and a second mounting seat (106). The first mounting seat (105) is provided with a first mounting hole (107) that communicates with a first ball cavity (101). The second mounting seat (106) is provided with a second mounting hole (108) that communicates with a second ball cavity (102). A positioning groove (109) is provided between the first mounting seat (105) and the second mounting seat (106). A first positioning block (110) is provided between the positioning groove (109) and the first mounting seat (105). A second positioning block (111) is provided between the positioning groove (109) and the second mounting seat (106). The positioning groove, first positioning block, and second positioning block integrally cast by the valve body can be quickly matched with tooling fixtures to achieve synchronous and precise installation of the first ball core, second ball core, first seal, and second seal.

2. The valve body of a double ball valve according to claim 1, characterized in that: A first annular block (112) is provided on the right side of the first mounting groove (103), and a second annular block (113) is provided on the left side of the second mounting groove (104). A recessed water passage groove (114) is formed between the first annular block (112) and the second annular block (113).

3. The valve body of a double ball valve according to claim 2, characterized in that: The outer diameter of the positioning groove (109) is greater than the outer diameter of the first positioning block (110) and the second positioning block (111).

4. The valve body of a double ball valve according to claim 2, characterized in that: The outer diameter of the positioning groove (109) is smaller than the outer diameter of the first positioning block (110) and the second positioning block (111).

5. A valve, characterized in that: The valve body includes the double ball valve body according to any one of claims 1 to 4, wherein a first ball core (2) is provided in the first ball cavity (101), a second ball core (11) is provided in the second ball cavity (102), a first valve cap (3) is fixedly connected to the side of the first ball cavity (101) away from the second ball cavity (102), the first valve cap (3) has a third mounting groove (301), a first sealing element (4) is fixedly provided in the first mounting groove (103) and the third mounting groove (301), the first sealing element (4) and the first ball core (2) are sealed against each other, a second valve cap (5) is fixedly connected to the side of the second ball cavity (102) away from the first ball cavity (101), the second valve cap (5) has a fourth mounting groove (501), a second sealing element (6) is fixedly provided in the second mounting groove (104) and the fourth mounting groove (501), the second sealing element (6) and the second ball core (11) are sealed against each other.

6. A valve according to claim 5, characterized in that: The first valve stem (8) is rotatably sealed inside the first mounting hole (107). The first valve stem (8) and the first ball core (2) are engaged and fixed. The first valve stem (8) extends out of the first mounting hole (107) and is fixedly connected to a handle (7).

7. A valve according to claim 6, characterized in that: The first mounting hole (107) has a first positioning hole (115) on the side near the first ball cavity (101). The diameter of the first positioning hole (115) is larger than the diameter of the first mounting hole (107). The first positioning hole (115) and the first mounting hole (107) are connected by a first convex arc surface (116). The first valve stem (8) has a first limiting block (801). The first limiting block (801) is located inside the first positioning hole (115). The first limiting block (801) and the first valve stem (8) are connected by a first concave arc surface (802). The first concave arc surface (802) and the first convex arc surface (116) abut against each other.

8. A valve according to claim 5, characterized in that: The second mounting hole (108) is rotatably sealed with a second valve stem (9). The second valve stem (9) and the second ball core (11) are engaged and fixed. The second mounting hole (108) has a second positioning hole (117) on the side near the second ball cavity (102). The diameter of the second positioning hole (117) is larger than the diameter of the second mounting hole (108). The second positioning hole (117) and the second mounting hole (108) are connected by a second convex arc surface (118). The second valve stem (9) has a second limiting block (901). The second limiting block (901) is located in the second positioning hole (117). The second limiting block (901) and the second valve stem (9) are connected by a second concave arc surface (902). The second concave arc surface (902) and the second convex arc surface (118) abut against each other.

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