Valve

Abstract

The utility model provides a valve, and belongs to the technical field of valves. The problems that deteriorated water is not prone to being generated inside, and assembling is inconvenient are solved. The valve comprises a valve body and a cylindrical valve element, the valve body is provided with a water inlet hole, a water outlet hole and an installation cavity, the valve element is located in the installation cavity, a water through hole is formed in the side portion of the valve element, the installation cavity penetrates through the upper end face of the valve body, and the shape of the installation cavity is matched with that of the valve element. The water through hole is located between the two first sealing rings, the outer edges of the two first sealing rings abut against the cavity wall of the mounting cavity to form sealing, a through hole is formed in the bottom of the valve body and penetrates through the cavity bottom wall of the mounting cavity, a columnar connecting part is fixedly connected to the center area of the bottom of the valve element, and the lower end of the connecting part penetrates out of the through hole. A clamping spring is connected to the outer side of the lower end of the connecting part and abuts against the bottom of the valve body. The utility model has the advantages of difficult generation of deteriorated water inside, convenient assembly and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves and relates to a valve. Background Art

[0002] In existing pipelines, ball valves are commonly used to control water flow and regulate flow. However, in practice, a large gap exists between the outer wall of the ball core and the inner wall of the valve body, where water can accumulate. If the ball valve is left fully open or fully closed for an extended period, the water trapped in this gap will gradually deteriorate and become stagnant. In this situation, if the ball valve is switched to a partially open position, the deteriorated water will also flow outward, posing a health risk to people if used for domestic purposes.

[0003] To this end, the Chinese patent application number 201621460840.7 proposes a valve structure, which includes a valve body, a cylindrical cavity for medium circulation, and an accommodating cavity arranged radially along the cavity; a cylindrical valve seat, which is fixed in the accommodating cavity, and the valve seat is provided with a first through hole matching the cavity; a cylindrical valve core, which is assembled in the valve seat, and the valve core is provided with a second through hole matching the first through hole, and the outer wall of the valve core matches the shape of the inner wall of the valve seat; a valve stem coaxial with the valve core, which is provided on the valve core, and the valve stem is used to rotate the valve core to connect or disconnect the second through hole with the first through hole to control the opening and closing of the valve; a valve cover, which is assembled on the valve body, the valve cover seals the accommodating cavity, and the valve stem passes through the valve cover. The valve cover includes an upper end cover and a lower end cover, with the valve core and valve seat assembled between the upper and lower end covers. The upper and lower end covers are respectively connected to the valve body, and the valve seat is held between the upper and lower end covers. During use, the valve core is rotated by the valve stem, connecting or disconnecting the second through hole on the valve core with the first through hole of the valve seat to open and close the valve. In particular, because the valve core is cylindrical and its outer wall matches the inner wall of the valve seat, there is almost no gap between the valve core and the valve seat, thereby ensuring that no water will remain between the valve core and the valve seat, thereby preventing the residual water from deteriorating and causing corrosion inside the valve, shortening its service life.

[0004] However, the above-mentioned valve structure also has its shortcomings: in order to ensure sealing, a cylindrical valve seat is provided in the valve body. During assembly, the valve seat needs to be placed into the valve body first, and then the valve core is placed into the valve body. Finally, the upper end cover and the lower end cover are fixedly connected to the upper and lower ends of the valve body respectively to position the valve seat and the valve core. The upper end cover and the lower end cover need to be fixed with fasteners respectively. Therefore, the valve structure has the problem of inconvenient assembly. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems existing in the prior art and to propose a valve which solves the problem that deteriorated water is not easily generated inside and the assembly is inconvenient.

[0006] The purpose of this utility model can be achieved through the following technical solutions:

[0007] 2. The unclamping method of claim 1, wherein the closure of the valve body is constructed so that the closure is in the form of a circle, and the closure is constructed so that the closure is in the form of a circle. The closure is constructed so that the closure is in the form of a circle, and the closure is constructed so that the closure is in the form of a circle.

[0008] This valve is achieved by providing a through hole connected to the installation cavity at the bottom of the valve body and fixing a connecting part at the bottom of the valve core. After the lower end of the connecting part passes through the through hole, a retaining spring is directly connected to the outer side of the lower end of the connecting part. The retaining spring abuts against the bottom of the valve body, which is equivalent to the valve body at the through hole being positioned between the retaining spring and the bottom of the valve core. This does not affect the normal state of the valve core, and at the same time the valve core and the valve body are fixed together along the center line of the valve core. The provision of the two first sealing rings ensures the required sealing between the valve core and the valve body, thereby greatly improving the assembly convenience of the valve while preventing the generation of deteriorated water inside.

[0009] In the above-mentioned valve, the operating portion and the connecting portion are both integrally fixed to the valve core.

[0010] When processing the valve core, the operating part and the connecting part are directly processed as one piece. In this way, there is no need to connect the connecting operation and connecting part on the valve core separately during assembly, which further improves the convenience of assembly.

[0011] In the above-mentioned valve, two annular embedding grooves are provided on the side of the valve core between the two first sealing rings, and the two annular embedding grooves are arranged back to back on the valve core. Second sealing rings are respectively embedded in the two annular embedding grooves. The center lines of the two second annular embedding grooves are collinear and perpendicular to the center line of the valve core, and the center line of the second annular embedding grooves is perpendicular to the water through hole. When the valve is in a closed state, the two second sealing rings respectively abut against the inner wall of the installation cavity to form a seal, and the water inlet and outlet are respectively located on the inner sides of the two second sealing rings.

[0012] When the valve core rotates to the point where the valve is in a closed state (i.e., the water hole is in a position completely offset from the water inlet hole and the water outlet hole), one of the second sealing rings rests against the position of the cavity wall of the installation cavity penetrated by the water inlet hole, and the water inlet hole is located on the inner side of the second sealing ring, and the other second sealing ring rests against the position of the cavity wall of the installation hole penetrated by the water outlet hole, and the water outlet hole is located on the inner side of the second sealing ring. In this way, the gap between the valve core and the cavity wall of the installation cavity can be completely isolated from the water inlet hole and the water outlet hole at the same time, ensuring that water in the front-end pipeline will not flow from the water inlet hole to the water outlet hole through the gap between the valve core and the cavity wall of the installation cavity, thereby improving the sealing reliability of the valve.

[0013] In the above-mentioned valve, the top of the valve core has an upper concave cavity, the operating part is connected to the center of the bottom wall of the upper concave cavity, the bottom of the valve core has a lower concave cavity, and the connecting part is connected to the center of the bottom wall of the lower concave cavity.

[0014] The arrangement of the upper and lower concave cavities can reduce the weight of the valve core, making it easier for users to operate.

[0015] In the above-mentioned valve, the valve body is provided with a positioning step inside the mouth of the installation cavity, a circular plate is provided against the positioning step, the circular plate is tightly fitted with the valve body, and the operating part passes through the circular plate.

[0016] After the valve core is fixed to the valve body by means of a retaining spring, a circular plate is fixed tightly on the positioning step, and the circular plate can serve to isolate external rainwater.

[0017] Compared with the prior art, this valve is provided with a through hole connected to the installation cavity at the bottom of the valve body and a connecting part is fixedly connected to the bottom of the valve core. After the lower end of the connecting part passes through the through hole, a retaining spring is directly connected to the outer side of the lower end of the connecting part. The retaining spring is abutted against the bottom of the valve body, which is equivalent to the valve body at the through hole being positioned between the retaining spring and the bottom of the valve core. This does not affect the normal state of the valve core, and at the same time the valve core and the valve body are fixed together along the center line of the valve core. The provision of the two first sealing rings ensures the required sealing between the valve core and the valve body, thereby greatly improving the assembly convenience of the valve while preventing deteriorated water from being generated inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional view of the valve in the open state.

[0019] Figure 2 yes Figure 1 Cross-sectional view along the AA axis.

[0020] Figure 3 It is a three-dimensional schematic diagram of this valve.

[0021] Figure 4 This is a three-dimensional schematic diagram of the valve from another angle.

[0022] Figure 5 It is an exploded diagram of the valve core, the first sealing ring and the second sealing ring.

[0023] Figure 6 This is a schematic diagram of another angle of decomposition between the valve core, the first sealing ring and the second sealing ring.

[0024] Figure 7 It is a three-dimensional schematic diagram of the valve body.

[0025] Figure 8 This is a cross-sectional view of the valve in the closed state.

[0026] Figure 9 yes Figure 8 Cross-sectional view along the BB direction.

[0027] In the figure, 1. valve body; 1a. water inlet hole; 1b. water outlet hole; 1c. mounting cavity; 1d. limit lever; 1e. through hole; 1f. positioning step; 2. valve core; 2a. water through hole; 2b. operating part; 2c. annular sealing groove; 2d. connecting part; 2d1. annular mounting groove; 2e. annular embedding groove; 2f. upper concave cavity; 2g. lower concave cavity; 3. first sealing ring; 4. retaining spring; 5. second sealing ring; 6. handle; 6a. protrusion; 7. circular plate. DETAILED DESCRIPTION

[0028] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0029] like Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 7As shown, a valve includes a valve body 1 and a valve core 2. The valve body 1 has a water inlet hole 1a, a water outlet hole 1b and a mounting cavity 1c. The center line of the water inlet hole 1a is colinear with the center line of the water outlet hole 1b and is arranged horizontally. The water inlet hole 1a and the water outlet hole 1b are simultaneously connected to the mounting cavity 1c. The valve core 2 is arranged in the mounting cavity 1c. The valve core 2 is provided with a water through hole 2a along the horizontal direction. The rotation of the valve core 2 can enable the water through hole 2a to connect the water inlet hole 1a with the water outlet hole 1b. The upper end of the valve core 2 is fixedly connected to an operating part 2b extending outside the valve body 1. The installation cavity 1c passes through the upper end surface of the valve body 1. The valve core 2 is cylindrical and the shape of the installation cavity 1c matches the valve core 2. Annular sealing grooves 2c are respectively provided on the outer side of the upper end and the outer side of the lower end of the valve core 2. The two annular sealing grooves 2c are concentrically arranged with the valve core 2. First sealing rings 3 are respectively provided in the two annular sealing grooves 2c. The water hole 2a is located between the two first sealing rings 3. The outer circles of the two first sealing rings 3 are both in contact with the cavity wall of the installation cavity 1c to form a seal. Furthermore, two annular grooves 2e are provided on the side of the valve core 2 of the two first sealing rings 3. The two annular grooves 2e are arranged back to back on the valve core 2. Second sealing rings 5 ​​are respectively embedded in the two annular grooves 2e. The center lines of the two second annular grooves 2e are collinear and perpendicular to the center line of the valve core 2, and the center line of the second annular grooves 2e is perpendicular to the water hole 2a. When the valve is in a closed state, the two second sealing rings 5 ​​respectively abut against the inner wall of the installation cavity 1c to form a seal, and the water inlet hole 1a and the water outlet hole 1b are respectively located on the inner sides of the two second sealing rings 5.

[0030] In this embodiment, if Figure 1 、 Figure 3 and Figure 7 As shown, the upper end of the operating portion 2b is sleeved with a handle 6, which is fixed to the handle 6 by screws. The operating portion 2b and the handle 6 are flat and square. Two limiter tabs 1d are externally provided on the upper end of the valve body 1, with the angle between the two limiter tabs 1d being 90°. The handle 6 has a protruding piece 6a located between the two limiter tabs 1d. The protruding piece 6a and the two limiter tabs 1d form a limit structure for the rotation angle of the valve core 2, ensuring that the angle of the valve core 2 from fully open to fully closed is 90°, the same as in conventional ball valves.

[0031] Furthermore, if Figure 1 、 Figure 2 、 Figure 4 and Figure 7As shown, the valve body 1 has a through-hole 1e at its bottom, extending through the bottom wall of the mounting cavity 1c. A connecting portion 2d is fixedly connected to the center of the bottom of the valve core 2. This cylindrical connecting portion 2d extends beyond the through-hole 1e, and a retaining spring 4 is attached to the outer side of its lower end. Specifically, an annular mounting groove 2d1 is provided on the outer side of the connecting portion 2d, into which the inner ring of the retaining spring 4 is retained. The operating portion 2b and the connecting portion 2d are both integrally connected to the valve core 2. The valve core 2 has an upper concave cavity 2f at its top, with the operating portion 2b connected to the center of the bottom wall of the upper concave cavity 2f. The valve core 2 has a lower concave cavity 2g at its bottom, with the connecting portion 2d connected to the center of the bottom wall of the lower concave cavity 2g. A positioning step 1f is provided on the inner side of the opening of the mounting cavity 1c of the valve body 1. A circular plate 7 is positioned against the positioning step 1f, tightly fitting the valve body 1. The operating portion 2b extends through the circular plate 7.

[0032] like Figure 1 and Figure 2 As shown, when the valve is in the fully open state, the valve core 2 is in a position where the center line of the water hole 2a is colinear with the center line of the water inlet hole 1a, and the water inlet hole 1a and the water outlet hole 1b are connected through the water hole 2a. At this time, the two second sealing rings 5 ​​are offset from the water inlet hole 1a and the water outlet hole 1b respectively. The water flowing into the water inlet hole 1a will flow into the water outlet hole 1b through the water hole 2a and flow backwards. When the valve needs to be closed, the valve core 2 is rotated until the position of the water hole 2a and the water inlet hole 1a are completely offset, as shown in FIG. Figure 8 and Figure 9 As shown, one of the second sealing rings 5 ​​rests against the position where the cavity wall of the installation cavity 1c is penetrated by the water inlet hole 1a, and the water inlet hole 1a is located on the inner side of the second sealing ring 5, and the other second sealing ring 5 rests against the position where the cavity wall of the installation hole is penetrated by the water outlet hole 1b, and the water outlet hole 1b is located on the inner side of the second sealing ring 5. In this way, the gap between the valve core 2 and the cavity wall of the installation cavity 1c can be completely isolated from the water inlet hole 1a and the water outlet hole 1b, ensuring that the water in the front-end pipeline will not flow from the water inlet hole 1a into the gap between the valve core 2 and the cavity wall of the installation cavity 1c, and will not flow to the water outlet hole 1b through the gap.

[0033] This valve is achieved by providing a through hole 1e at the bottom of the valve body 1 that is connected to the installation cavity 1c and fixing a connecting portion 2d at the bottom of the valve core 2. After the lower end of the connecting portion 2d passes through the through hole 1e, a retaining spring 4 is directly connected to the outer side of the lower end of the connecting portion 2d. The retaining spring 4 is in contact with the bottom of the valve body 1, which is equivalent to the valve body 1 at the through hole 1e being positioned between the retaining spring 4 and the bottom of the valve core 2. This does not affect the normal state of the valve core 2, and at the same time fixes the valve core 2 and the valve body 1 together along the center line of the valve core 2. The provision of the two first sealing rings 3 ensures the required seal between the valve core 2 and the valve body 1, thereby greatly improving the assembly convenience of the valve while preventing deteriorated water from being generated inside.

[0034] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A valve comprising a valve body (1) and a cylindrical valve core (2), wherein the valve body (1) has a water inlet (1a), a water outlet (1b) and an installation cavity (1c) for connecting the two, the valve core (2) is located in the installation cavity (1c) and a water through hole (2a) is provided on the side of the valve core (2), and the valve core (2) rotates to enable the water through hole (2a) to connect the water inlet (1a) and the water outlet (1b), and the upper end of the valve core (2) is fixedly connected to an operating portion (2b) extending out of the valve body (1), characterized in that: The installation cavity (1c) passes through the upper end surface of the valve body (1) and the shape of the installation cavity (1c) matches the valve core (2). The outer sides of the upper end and the lower end of the valve core (2) are respectively provided with first sealing rings (3). The water hole (2a) is located between the two first sealing rings (3). The outer edges of the two first sealing rings (3) are both against the cavity wall of the installation cavity (1c) to form a seal. The bottom of the valve body (1) has a through hole (1e). The through hole (1e) passes through the cavity bottom wall of the installation cavity (1c). The bottom center area of ​​the valve core (2) is fixedly connected with a connecting part (2d). The connecting part (2d) is columnar. The lower end of the connecting part (2d) passes through the through hole (1e). The outer side of the lower end of the connecting part (2d) is connected with a retaining spring (4). The retaining spring (4) is against the bottom of the valve body (1).

2. A valve according to claim 1, characterized in that: The operating portion (2b) and the connecting portion (2d) are both integrally fixedly connected to the valve core (2).

3. A valve according to claim 2, characterized in that: Two annular embedding grooves (2e) are provided on the side of the valve core (2) between the two first sealing rings (3). The two annular embedding grooves (2e) are arranged opposite to each other on the valve core (2). Second sealing rings (5) are respectively embedded in the two annular embedding grooves (2e). The center lines of the two second annular embedding grooves (2e) are collinear and perpendicular to the center line of the valve core (2). The center line of the second annular embedding grooves (2e) is perpendicular to the water hole (2a). When the valve is in a closed state, the two second sealing rings (5) respectively abut against the inner wall of the installation cavity (1c) to form a seal, and the water inlet hole (1a) and the water outlet hole (1b) are respectively located on the inner sides of the two second sealing rings (5).

4. A valve according to claim 2 or 3, characterized in that: The valve core (2) has an upper concave cavity (2f) at the top, the operating portion (2b) is connected to the center of the bottom wall of the upper concave cavity (2f), the valve core (2) has a lower concave cavity (2g) at the bottom, and the connecting portion (2d) is connected to the center of the bottom wall of the lower concave cavity (2g).

5. A valve according to claim 1, 2 or 3, characterized in that: The valve body (1) is provided with a positioning step (1f) on the inner side of the mouth of the installation cavity (1c), and a circular plate (7) is provided against the positioning step (1f). The circular plate (7) is tightly matched with the valve body (1), and the operating part (2b) passes through the circular plate (7).

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