Anti-freezing rotary ball valve

Abstract

The utility model relates to the technical field of rotary ball valves, and discloses an anti-freezing rotary ball valve which comprises a protective cover and a supporting seat fixedly installed in the middle of the bottom of an inner cavity of the protective cover, and power can be provided for rotation of an inner valve rod through mutual matching of a rotary disc, a rotary rod, the rotary disc, an outer valve rod, a threaded sleeve and a threaded rod. And meanwhile, the height of the rotating disc can be flexibly adjusted according to actual needs, flexibility is high, use of the valve body in daily life cannot be limited, the using effect of the device is improved, and through mutual cooperation of a sealing cover, a heating block B, an L-shaped plate, a T-shaped rod, a reset spring A, a clamping plate, a sliding block, a push rod, a positioning rod and a reset spring B, the heating efficiency is improved, and the practicability is high. And meanwhile, the valve body is matched with the heating block A and the heating block B to heat the inner cavity of the protective cover, so that the valve body is in a proper-temperature state and cannot be frozen due to low temperature, and the anti-freezing effect is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of rotary ball valves, specifically an antifreeze rotary ball valve. Background Technology

[0002] The main feature of a rotary ball valve is that it can reliably shut off not only under forward pressure but also under reverse pressure or when the reverse pressure is much greater than the forward pressure. The rotary ball valve combines the functions and advantages of butterfly valves, ball valves, gate valves, and globe valves, while also possessing its own unique and powerful functions and advantages. In winter, due to the low temperature, water will freeze, so it is very necessary to have an anti-freeze rotary ball valve to prevent it from freezing and extend its service life.

[0003] Existing antifreeze rotary ball valves have fixed rod lengths for controlling the rotation of the valve, which limits their daily use and cannot meet the needs of different situations. In addition, they lack protective components, which can lead to freezing when used in low temperatures, reducing the practicality of the device.

[0004] Therefore, we propose an antifreeze rotary ball valve to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide an antifreeze rotary ball valve to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an antifreeze rotary ball valve, comprising a protective cover and a support seat fixedly installed at the bottom center of the inner cavity of the protective cover, the top of the support seat being fitted with a valve body, and connecting pipes being detachably installed at the left and right ends of the support seat, a protective tube being detachably installed at the center of the top of the valve body, an inner valve stem extending into the inner cavity of the protective tube, the outer side of the inner valve stem being movably installed through the protective cover, a rotating assembly being installed above the top of the protective tube, and a sealing assembly being installed at the top of the protective cover;

[0007] Heating blocks A are fixedly installed at the bottom of the inner cavity of the protective cover near the left and right sides respectively;

[0008] A turntable is provided above the top of the protective tube. A circular groove is opened in the middle of the top of the turntable, and a knob is installed in the inner cavity of the circular groove. An outer valve stem is fixedly installed in the middle of the bottom of the turntable, and the bottom end of the outer valve stem extends into the inner cavity of the protective tube. A rectangular groove is opened in the middle of the bottom of the outer valve stem, and the outer side of the inner valve stem is slidably installed in the inner cavity of the rectangular groove. A circular opening is opened at the top of the inner cavity of the rectangular groove. A threaded sleeve is fixedly installed in the middle of the bottom of the knob, and the lower end of the threaded sleeve extends movably through into the inner cavity of the circular opening.

[0009] Preferably, the inner cavity of the threaded sleeve is threaded with a threaded rod that extends into the inner cavity of the rectangular groove, and the lower end of the threaded rod is fixedly installed on the top of the inner valve rod.

[0010] Preferably, a number of rotating rods are fixedly installed at equal intervals on the outer side of the turntable.

[0011] Preferably, the sealing assembly includes a sealing cap that fits onto the top of the protective cover and L-shaped plates disposed on the left and right sides of the sealing cap. The opposite sides of the L-shaped plates are fixedly installed on the protective cover, and T-shaped rods are movably installed through the L-shaped plates. Slots are respectively opened in the middle of the left and right sides of the sealing cap, and the output ends of the T-shaped rods are respectively inserted into the inner cavities of the adjacent slots. Snap-fit ​​plates are fixedly installed on the top of the valve body near the left and right sides, and the tops of the snap-fit ​​plates slide through and extend to the outside of the sealing cap.

[0012] Preferably, the top of the sealing cover is provided with slots near the left and right sides, and the bottom of the slot cavity is respectively fitted with sliding blocks on opposite sides. The opposite side of the sliding blocks is respectively fixedly installed with positioning rods, and the opposite side of the slot cavity is respectively provided with through openings. The opposite side of the snap-fit ​​plate is provided with positioning grooves near the top. The opposite ends of the positioning rods pass through the adjacent through openings and extend into the inner cavity of the adjacent positioning grooves. The outer side of the positioning rods is respectively fitted with return springs B, and the two ends of the return springs B are respectively fixedly installed on the inner wall of the adjacent slot cavity and on the sliding blocks.

[0013] Preferably, a return spring A is sleeved on the outer side of the T-shaped rod, and the two ends of the return spring A are fixedly installed on the sealing cover and the adjacent L-shaped plate, respectively.

[0014] Preferably, push rods are fixedly installed at the middle of the top of the sliding block, and the upper ends of the push rods extend to the outside of the sealing cover.

[0015] Preferably, heating blocks B are fixedly installed at the bottom of the sealing cover near the left and right sides respectively.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. Through the cooperation of components such as the turntable, rotating rod, outer valve stem, threaded sleeve, and threaded rod, power can be provided for the rotation of the inner valve stem. At the same time, the height of the turntable can be flexibly adjusted according to actual needs. It is highly flexible and does not restrict the use of the valve body in daily life, thus improving the effectiveness of the device.

[0018] 2. Through the cooperation of the sealing cover, heating block B, L-shaped plate, T-shaped rod, return spring A, snap plate, sliding block, push rod, positioning rod and return spring B, the protective cover can be sealed. At the same time, the cooperation of heating block A and heating block B can heat the inner cavity of the protective cover, so that the valve body is kept at a suitable temperature and will not freeze due to low temperature, thus giving it an antifreeze function. Attached Figure Description

[0019] Figure 1 This is an overall cross-sectional view of the present invention;

[0020] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a partial top view of the turntable of this utility model;

[0022] Figure 4 For the present utility model Figure 1 Enlarged view of section B in the middle.

[0023] In the diagram: 1. Protective cover; 11. Heating block A; 2. Support base; 3. Valve body; 4. Connecting pipe; 5. Protective pipe; 6. Inner valve stem; 7. Rotating assembly; 71. Turntable; 711. Rotating rod; 72. Knob; 73. Outer valve stem; 74. Threaded sleeve; 75. Threaded rod; 8. Sealing assembly; 81. Sealing cover; 811. Heating block B; 82. L-shaped plate; 83. T-shaped rod; 831. Return spring A; 84. Snap-fit ​​plate; 85. Sliding block; 851. Push rod; 86. Positioning rod; 87. Return spring B. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] Please see Figure 1-4An antifreeze rotary ball valve includes a protective cover 1 and a support seat 2 fixedly installed at the bottom center of the inner cavity of the protective cover 1. The protective cover 1 has installation ports on its left and right sides respectively. The top of the support seat 2 is fitted with a valve body 3, and connecting pipes 4 are detachably installed at both ends of the support seat 2. A protective tube 5 is detachably installed at the center of the top of the valve body 3. An inner valve stem 6 is provided in the inner cavity of the protective tube 5, extending into the inner cavity of the protective cover 1. The outer side of the inner valve stem 6 is movably installed through the protective cover 1. A rotating component 7 is installed above the top of the protective tube 5. A sealing component 8 is installed on the top of the protective cover 1. The rotating component 7 can rotate the inner valve stem 6 and adjust its height, while the sealing component 8 can work with the protective cover 1 to protect the valve body 3 and prevent freezing.

[0027] Heating blocks A11 are fixedly installed at the bottom of the inner cavity of the protective cover 1 near the left and right sides, which can heat the inner cavity of the protective cover 1 and play a role in preventing freezing.

[0028] A turntable 71 is provided at the top of the protective tube 5. A circular groove is opened in the middle of the top of the turntable 71, and a knob 72 is installed in the inner cavity of the circular groove. An outer valve stem 73 is fixedly installed in the middle of the bottom of the turntable 71, and the bottom end of the outer valve stem 73 extends into the inner cavity of the protective tube 5. A rectangular groove is opened in the middle of the bottom of the outer valve stem 73, and the outer side of the inner valve stem 6 is slidably installed in the inner cavity of the rectangular groove. A circular opening is opened at the top of the inner cavity of the rectangular groove. A threaded sleeve 74 is fixedly installed in the middle of the bottom of the knob 72, and the lower end of the threaded sleeve 74 extends movably through the inner cavity of the circular opening, which can drive the inner valve stem 6 to rotate and flexibly adjust the height of the turntable 71.

[0029] The inner cavity of the threaded sleeve 74 is threaded with a threaded rod 75, one end of which extends into the inner cavity of the rectangular groove, and the lower end of the threaded rod 75 is fixedly installed on the top of the inner valve stem 6.

[0030] Several rotating rods 711 are fixedly installed at equal intervals on the outer side of the turntable 71, which can drive the turntable 71 to rotate.

[0031] In this embodiment: During use, the external pipe can be connected to the connecting pipe 4 through the installation port, allowing liquid to flow and thus enabling the valve body 3 to open and close. When the operator rotates the turntable 71, it can drive the outer valve stem 73 to rotate. When the outer valve stem 73 rotates, it will drive the inner valve stem 6 to rotate through the rectangular groove, thus realizing the opening and closing of the valve body 3. In addition, the height of the turntable 71 can be flexibly adjusted as needed before rotating it. Rotating the knob 72 can drive the threaded sleeve 74 to rotate. When the threaded sleeve 74 rotates, it will drive the inner valve stem 6 to move downward through the threaded rod 75. Since the position of the inner valve stem 6 is fixed, it will drive the outer valve stem 73 to move upward outside the inner valve stem 6, thus adjusting the height. After adjustment, the knob 72 can be stopped.

[0032] Example 2

[0033] This embodiment is an improvement upon embodiment 1. For details, please refer to [link / reference]. Figure 1-4 The sealing assembly 8 includes a sealing cover 81 that fits onto the top of the protective cover 1 and L-shaped plates 82 located on the left and right sides of the sealing cover 81. The opposite sides of the L-shaped plates 82 are fixedly installed on the protective cover 1, and T-shaped rods 83 are movably installed through the L-shaped plates 82. Slots are opened in the middle of the left and right sides of the sealing cover 81, and the output ends of the T-shaped rods 83 are inserted into the inner cavities of the adjacent slots. The top of the valve body 3 is fixedly installed near the left and right sides, and the top of the snap-fit ​​plates 84 slides through and extends to the outside of the sealing cover 81. They can cooperate with the protective cover 1 to protect the valve body 3 and prevent freezing. They can also be disassembled to facilitate the maintenance of the valve body 3 and improve the performance.

[0034] The top of the sealing cover 81 has slots on the left and right sides. Sliding blocks 85 are attached to the opposite sides of the bottom of the slots. Positioning rods 86 are fixedly installed on the opposite sides of the sliding blocks 85. Through openings are opened on the opposite sides of the slots. Positioning grooves are opened on the opposite side of the snap-fit ​​plate 84 near the top. The opposite ends of the positioning rods 86 pass through the adjacent through openings and extend into the inner cavities of the adjacent positioning grooves. Return springs B87 are sleeved on the outer sides of the positioning rods 86. The two ends of the return springs B87 are fixedly installed on the inner walls of the adjacent slot cavities and the sliding blocks 85, which can seal the protective cover 1. At the same time, the sealing cover 81 can be disassembled, and the sealing cover 81 and valve body 3 can be snapped and disassembled.

[0035] Return springs A831 are respectively fitted on the outer side of the T-shaped rod 83, and the two ends of the return springs A831 are respectively fixedly installed on the sealing cover 81 and the adjacent L-shaped plate 82, which facilitates the movement and restoration of the T-shaped rod 83.

[0036] Push rods 851 are fixedly installed at the middle of the top of the sliding block 85, and the upper ends of the push rods 851 extend to the outside of the sealing cover 81, which can push the sliding block 85 to move.

[0037] Heating blocks B811 are fixedly installed at the bottom of the sealing cover 81 near the left and right sides, which heats the inner cavity of the protective cover 1 and helps to prevent the valve body 3 from freezing.

[0038] In this embodiment: when the valve body 3 is being maintained, the T-shaped rod 83 can be pulled to the opposite side. The extension of the return spring A831 can drive the T-shaped rod 83 to move to the opposite side, thereby moving it away from the inner cavity of the adjacent slot. At this time, the locking of the sealing cover 81 can be released. Then, the sealing cover 81 can be removed by moving it upward. Then, the push rod 851 can be pushed to the opposite side to drive the adjacent sliding block 85 to move in the opposite direction, thereby driving the positioning rods 86 on both sides to move in the opposite direction. When the positioning rods 86 move in the opposite direction, they will stretch the adjacent return spring B87, thereby driving the positioning rods 86 away from the inner cavity of the adjacent positioning slot.

[0039] Working Principle: During use, the external pipeline can be connected to the connecting pipe 4 through the installation port, allowing liquid to flow and thus enabling the valve body 3 to open and close. When the operator rotates the turntable 71, it drives the outer valve stem 73 to rotate. The rotation of the outer valve stem 73, in turn, drives the inner valve stem 6 to rotate through the rectangular groove, thereby opening and closing the valve body 3. Furthermore, the height of the turntable 71 can be flexibly adjusted before rotation. Rotating the knob 72 drives the threaded sleeve 74 to rotate. When the threaded sleeve 74 rotates, it drives the inner valve stem 6 downward through the threaded rod 75. Since the position of the inner valve stem 6 is fixed, it drives the outer valve stem 73 to move upward outside the inner valve stem 6, thus adjusting the height. After adjustment, rotating the knob 72 can be stopped. When maintaining valve body 3, the T-shaped rod 83 can be pulled to the opposite side. The extension of the return spring A831 can move the T-shaped rod 83 to the opposite side, thus moving it away from the inner cavity of the adjacent slot. At this time, the locking of the sealing cover 81 can be released. Then, the sealing cover 81 can be removed by moving it upward. Then, push the push rod 851 to the opposite side to move the adjacent sliding block 85 in the opposite direction, thereby moving the positioning rods 86 on both sides in the opposite direction. When the positioning rods 86 move in the opposite direction, they will stretch the adjacent return spring B87, thereby moving the positioning rods 86 away from the inner cavity of the adjacent positioning slot. When used at low temperature, the heating blocks A11 and B811 can be used to heat the inside of the protective cover 1, so that the valve body 3 can be kept at a suitable temperature, which is beneficial for its antifreeze.

[0040] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An antifreeze rotary ball valve, comprising a protective cover (1) and a support seat (2) fixedly installed at the middle of the bottom of the inner cavity of the protective cover (1), characterized in that: The top of the support base (2) is fitted with a valve body (3), and connecting pipes (4) are detachably installed on the left and right ends of the support base (2). A protective pipe (5) is detachably installed in the middle of the top of the valve body (3). An inner valve stem (6) is provided in the inner cavity of the protective pipe (5) and extends into the inner cavity of the protective cover (1). The outer side of the inner valve stem (6) is movably installed on the protective cover (1). A rotating assembly (7) is installed above the top of the protective pipe (5), and a sealing assembly (8) is installed on the top of the protective cover (1). Heating blocks A (11) are fixedly installed at the bottom of the inner cavity of the protective cover (1) near the left and right sides respectively; A turntable (71) is provided above the top of the protective tube (5). A circular groove is provided in the middle of the top of the turntable (71), and a knob (72) is installed in the inner cavity of the circular groove. An outer valve stem (73) is fixedly installed in the middle of the bottom of the turntable (71), and the bottom end of the outer valve stem (73) extends into the inner cavity of the protective tube (5). A rectangular groove is provided in the middle of the bottom of the outer valve stem (73), and the outer side of the inner valve stem (6) is slidably installed in the inner cavity of the rectangular groove. A circular opening is provided at the top of the inner cavity of the rectangular groove. A threaded sleeve (74) is fixedly installed in the middle of the bottom of the knob (72), and the lower end of the threaded sleeve (74) extends movably through into the inner cavity of the circular opening.

2. The antifreeze rotary ball valve according to claim 1, characterized in that: The inner cavity of the threaded sleeve (74) is threaded with a threaded rod (75) extending into the inner cavity of the rectangular groove, and the lower end of the threaded rod (75) is fixedly installed on the top of the inner valve stem (6).

3. The antifreeze rotary ball valve according to claim 1, characterized in that: Several rotating rods (711) are fixedly installed at equal intervals on the outer side of the turntable (71).

4. The antifreeze rotary ball valve according to claim 1, characterized in that: The sealing assembly (8) includes a sealing cover (81) attached to the top of the protective cover (1) and L-shaped plates (82) set on the left and right sides of the sealing cover (81). The opposite sides of the L-shaped plates (82) are fixedly installed on the protective cover (1), and T-shaped rods (83) are movably installed through the L-shaped plates (82). Slots are opened in the middle of the left and right sides of the sealing cover (81), and the output ends of the T-shaped rods (83) are inserted into the inner cavity of the adjacent slots. The top of the valve body (3) is fixedly installed near the left and right sides, and the top of the snap-fit ​​plates (84) slides through and extends to the outside of the sealing cover (81).

5. The antifreeze rotary ball valve according to claim 4, characterized in that: The top of the sealing cover (81) is provided with slots near the left and right sides. Sliding blocks (85) are attached to the opposite side of the bottom of the slot cavity. Positioning rods (86) are fixedly installed on the opposite side of the sliding blocks (85). Openings are provided on the opposite side of the slot cavity. Positioning grooves are provided on the opposite side of the snap plate (84) near the top. The opposite ends of the positioning rods (86) pass through the adjacent openings and extend into the inner cavity of the adjacent positioning grooves. Return springs B (87) are sleeved on the outside of the positioning rods (86). The two ends of the return springs B (87) are fixedly installed on the inner wall of the adjacent slot cavity and the sliding block (85).

6. The antifreeze rotary ball valve according to claim 4, characterized in that: The T-shaped rod (83) is fitted with a return spring A (831) on its outer side, and the two ends of the return spring A (831) are fixedly installed on the sealing cover (81) and the adjacent L-shaped plate (82).

7. The antifreeze rotary ball valve according to claim 5, characterized in that: Push rods (851) are fixedly installed at the middle of the top of the sliding block (85), and the upper ends of the push rods (851) extend to the outside of the sealing cover (81).

8. The antifreeze rotary ball valve according to claim 4, characterized in that: Heating blocks B (811) are fixedly installed on the bottom of the sealing cover (81) near the left and right sides respectively.

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