Valve structure capable of preventing water from being sucked in

Abstract

The valve structure capable of preventing water suction comprises a valve body and a floating ring, the valve body is sleeved with the floating ring in a vertically movable mode, the position, located above the floating ring, of the valve body is provided with an upper limiting part used for preventing the floating ring from being disengaged from the top of the valve body, and the position, located below the floating ring, of the valve body is provided with a lower limiting part used for preventing the floating ring from being disengaged from the bottom of the valve body; the valve body is provided with an air inlet, an air outlet and an air channel communicated with the air inlet and the air outlet, and when the floating ring abuts against the upper limiting part, the air inlet is blocked by the floating ring and enters a closed state. In the normal working state, gas enters the valve body through the gas inlet of the valve body and is discharged out of the valve body through the gas outlet along the gas channel, and when the liquid level in the box exceeds the floating ring, the floating ring floats upwards along with rising of the liquid level to block the gas inlet, so that liquid is prevented from being sucked into the valve body.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a valve structure capable of preventing water suction. Background Art

[0002] During the operation of the motor, heat is generated inside the motor, so it is necessary to introduce external air into the motor to achieve the effect of heat dissipation, so as to reduce the internal temperature of the motor and prevent the motor from overheating and damage. At present, the motor air intake and heat dissipation port generally adopts a breathable valve, but the existing breathable valve has a small air intake volume, and when the liquid level exceeds the air intake port, the liquid can easily enter the motor through the air intake port, affecting the normal operation of the motor. Summary of the invention

[0003] In order to solve the technical problems existing in the background technology, the present invention proposes a valve structure for preventing water suction.

[0004] The present invention provides a valve structure for preventing water inhalation, comprising: a valve body and a floating ring, wherein:

[0005] On the set valve body where the float ring can move up and down, the position of the valve body located above the float ring is provided with an upper limit portion for preventing the float ring from escaping from the top thereof, and the position of the valve body located below the float ring is provided with a lower limit portion for preventing the float ring from escaping from the bottom thereof;

[0006] The valve body has an air inlet, an air outlet and an air passage connecting the air inlet and the air outlet, and when the floating ring abuts against the upper limit portion, the air inlet is blocked by the floating ring and enters a closed state.

[0007] Preferably, the outer periphery of the valve body at its top has a semi-enclosed cavity with an open lower end, and the air inlet and the upper limit portion are both located inside the semi-enclosed cavity. When the floating ring abuts against the upper limit portion, the floating ring blocks the lower end of the semi-enclosed cavity to form a closed space inside the semi-enclosed cavity.

[0008] Preferably, the upper limit portion at least includes an outer ring body sleeved on the valve body; the top of the valve body is provided with a valve cap, the valve cap has an outer brim, the outer brim covers the upper end portion of the valve body inside to form a semi-enclosed cavity on the inner side; the inner diameter of the floating ring is smaller than the outer diameter of the outer ring body, and the outer diameter of the floating ring is larger than the caliber of the outer brim.

[0009] Preferably, the port of the outer eaves and the lower end of the outer ring body are located at the same height, the inner edge of the port of the outer eaves and the outer edge of the lower port of the outer ring body are respectively provided with chamfers A1 and A2, the inner edge and outer edge of the top of the floating ring are respectively provided with chamfers B1 and B2, and the span between chamfers A1 and A2 is adapted to the width between chamfers B1 and B2.

[0010] Preferably, the upper limit portion also includes an inner ring body located inside the ring body, and a connecting surface connecting the inner ring body and the outer ring body, the top of the outer ring body is higher than the upper port of the valve body, the connecting surface is an annular surface and is stuck on the edge of the port of the valve body, the inner ring body is located inside the valve body and connected to the airway; the valve cap is located above the upper limit portion and covers the upper limit portion, and the air inlet is located at the junction of the valve cap and the upper limit portion.

[0011] Preferably, the connecting surface is located between the two ends of the outer ring body, and a plurality of circumferentially arranged avoidance holes are provided on the connecting surface; a plurality of circumferentially arranged positioning columns are provided on the top of the valve body, and each positioning column passes through each avoidance hole one by one, and the height of each positioning column is higher than the top of the outer ring body; the valve cap is fixed to each positioning column by threaded fasteners.

[0012] Preferably, the inner top surface of the valve cap is provided with a plurality of positioning sleeves, each positioning sleeve is correspondingly mounted on the positioning column and forms a seal with the outer wall of the positioning sleeve; the threaded fastener is screwed into the positioning column from the top of the valve cap.

[0013] Preferably, an inner flange is provided on the inner side of the upper port of the valve body, the positioning column is located on the inner flange, and the connecting surface is in contact with the inner flange.

[0014] Preferably, the lower limit portion is an annular structure, and a plurality of circumferentially arranged holes are provided on the lower limit portion directly below the floating ring.

[0015] Preferably, it also includes an outer cover body which is arranged outside the valve body, and a plurality of filter holes are densely distributed on the outer cover body.

[0016] Preferably, a handle is provided on the top of the outer cover.

[0017] In the present invention, a float ring is mounted on the valve body and is able to move up and down. Under normal working conditions, gas enters the valve body from the air inlet of the valve body and is discharged from the valve body through the air outlet along the air passage. When the liquid level in the box exceeds the float ring, the float ring floats up with the increase of the liquid level to block the air inlet, thereby preventing the liquid from being sucked into the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 An exploded view of a valve structure for preventing water suction proposed by the present invention;

[0019] Figure 2 This is a structural schematic diagram of the valve cap in a valve structure for preventing water suction proposed by the present invention;

[0020] Figure 3 This is a structural schematic diagram of the upper limit portion in a valve structure for preventing water suction proposed by the present invention;

[0021] Figure 4 This is a structural schematic diagram of the valve body in a valve structure for preventing water suction proposed by the present invention;

[0022] Figure 5 A schematic diagram of a water suction blocking valve structure proposed by the present invention in a normal working state;

[0023] Figure 6 It is a schematic diagram of a state in which the floating ring in the water suction blocking valve structure proposed by the present invention floats up and blocks the air inlet. DETAILED DESCRIPTION

[0024] Reference Figure 1 The present invention provides a water-intake-blocking valve structure, comprising: a valve body 1 and a floating ring 2, wherein:

[0025] On the set valve body 1 in which the float 2 can move up and down, the valve body 1 is provided with an upper limit portion 3 above the float 2 to prevent the float 2 from escaping from the top thereof, and the valve body 1 is provided with a lower limit portion 4 below the float 2 to prevent the float 2 from escaping from the bottom thereof. The valve body 1 has an air inlet, an air outlet, and an air passage connecting the air inlet and the air outlet, and when the float 2 abuts against the upper limit portion 3, the air inlet is blocked by the float 2 and enters a closed state. Under normal working conditions, the gas in the box enters the valve body 1 from the air inlet of the valve body 1 and is discharged from the valve body 1 from the air outlet along the air passage. When the liquid level in the box exceeds the float 2, the float 2 floats up with the increase of the liquid level to block the air inlet, thereby preventing the liquid from being sucked into the valve body 1.

[0026] Specifically, the outer periphery of the valve body 1 at the top thereof has a semi-enclosed cavity with an open lower end, and the air inlet and the upper limit portion 3 are both located inside the semi-enclosed cavity. When the float ring 2 abuts against the upper limit portion 3, the float ring 2 blocks the lower end of the semi-enclosed cavity to form a closed space inside the semi-enclosed cavity, so that external liquid cannot enter the space, and then the liquid cannot enter the valve body 1 through the air inlet, thereby achieving the purpose of preventing liquid from being sucked into the valve body 1.

[0027] Reference Figure 2-4 The upper limit portion 3 at least includes an outer ring body 31 sleeved on the valve body 1; the top of the valve body 1 is provided with a valve cap 5, and the valve cap 5 has an outer edge, and the outer edge covers the upper end part of the valve body 1 inside to form a semi-enclosed cavity inside thereof; the inner diameter of the float ring 2 is smaller than the outer diameter of the outer ring body 31, and the outer diameter of the float ring 2 is larger than the caliber of the outer edge. When the float ring 2 floats up with the increase of the liquid level, the inner and outer sides of the float ring 2 respectively abut against the outer ring body 31 and the outer edge to block the lower end of the semi-enclosed cavity, so that the internal space of the outer edge enters a closed state.

[0028] The port of the outer edge is at the same height as the lower end of the outer ring body 31, and the inner edge of the port of the outer edge and the outer edge of the lower port of the outer ring body 31 are respectively provided with chamfers A1 and A2, and the inner edge and outer edge of the top of the float ring 2 are respectively provided with chamfers B1 and B2, and the span between chamfers A1 and A2 is adapted to the width between chamfers B1 and B2. When the float ring 2 floats up with the increase of the liquid level, the chamfers B1 and B2 located on the inner and outer sides of the float ring 2 are respectively against and fitted with chamfers A1 and A2 to form a sealing surface. In this way, the upper end of the float ring 2 can be smoothly squeezed into the space between the outer edge and the outer ring body 31, thereby ensuring the sealing effect of the contact part between the float ring 2 and the outer edge and the outer ring body 31.

[0029] In addition, the upper limit portion 3 also includes an inner ring body 32 located inside the ring body, and a connecting surface 33 connecting the inner ring body 32 and the outer ring body 31. The top of the outer ring body 31 is higher than the upper port of the valve body 1. The connecting surface 33 is an annular surface and is stuck on the edge of the port of the valve body 1. The inner ring body 32 is located inside the valve body 1 and communicates with the airway; the valve cap 5 is located above the upper limit portion 3 and covers the upper limit portion 3. The air inlet is located at the junction of the valve cap 5 and the upper limit portion 3. The design of this structure forms a first sealing surface between the inner ring surface of the outer ring body 31 and the outside of the valve body 1, a second sealing surface between the connecting surface 33 and the port of the valve body 1, and a third sealing surface between the inner ring body 32 and the inner wall of the valve body 1, thereby ensuring the sealing of the assembly between the upper limit portion 3 and the valve body 1.

[0030] Furthermore, the connecting surface 33 is located between the two ends of the outer ring body 31, and a plurality of circumferentially arranged avoidance holes are provided on the connecting surface 33; a plurality of circumferentially arranged positioning posts 11 are provided on the top of the valve body 1, and each positioning post 11 passes through each avoidance hole one by one, and the height of each positioning post 11 is higher than the top of the outer ring body 31; the valve bonnet 5 is fixed to each positioning post 11 by a threaded fastener, thereby forming a fixation of the valve bonnet 5 and the valve body 1, and a gap is formed between the inner top surface of the valve bonnet 5 and the top surface of the outer ring body 31, and the gap is the air inlet, and the gas enters the interior of the valve body 1 from all around the inner side of the valve bonnet 5, and the valve bonnet 5 cooperates with the valve body 1 to fix the upper limit portion 3 therebetween. When the valve bonnet 5 is loosened, the upper limit portion 3 can be directly removed from the top of the valve body 1, and maintenance and disassembly are extremely convenient.

[0031] Furthermore, a plurality of positioning sleeves 51 are provided on the inner top surface of the valve bonnet 5, and each positioning sleeve 51 is correspondingly sleeved on the positioning column 11 and forms a seal with the outer wall of the positioning sleeve 51. The threaded fastener is screwed into the positioning column 11 from the top of the valve bonnet 5. The cooperation between the positioning sleeve 51 and the positioning column 11 separates the fastening part of the valve bonnet 5 from the sealing seal. Regardless of whether the threaded fastener is loosened or tightened, the top of the valve bonnet 5 is in a sealed state, and the positioning sleeve 51 on the valve bonnet 5 can press the upper limit portion 3 between the top of the valve body 1 and the inner side thereof.

[0032] In addition, in order to improve the sealing performance between the contact surface of the valve body 1 and the upper limit portion 3 and increase the stability of the assembly of the valve body 1 and the valve body 1, the present embodiment sets an inner flange 12 on the inner side of the upper port of the valve body 1, and makes the inner flange 12 an annular structure, sets the positioning column 11 on the inner flange 12, sets the inner ring body 32 on the inner side of the inner flange 12, and the connecting surface 33 is in contact with the inner flange 12.

[0033] The upper limit portion 3 in this embodiment is made of a sealing material to ensure the sealing performance of the contact surface with the contacting components.

[0034] The lower limit part 4 in this embodiment is an annular structure. The lower limit part 4 is located directly below the float ring 2 and is provided with a plurality of circumferentially arranged holes. When the liquid level in the tank rises, the liquid can lift the float ring 2 through the holes below the float ring 2 to ensure the stability of the float ring 2.

[0035] In addition, a water-intake-blocking valve structure proposed in the present invention also includes an outer cover body 6 arranged outside the valve body 1, and a plurality of filter holes are densely distributed on the outer cover body 6 to prevent foreign matter from being sucked into the motor through the valve body 1. The specific structure of the outer cover body 6 can adopt a grid structure design or a hollow structure design.

[0036] A handle is provided on the top of the outer cover body 6 to facilitate lifting the cover body.

[0037] As can be seen from the above, the present invention provides a floating ring 2 that can move up and down on the valve body 1, and in normal working state, the gas enters the valve body 1 from the air inlet of the valve body 1 and is discharged from the valve body 1 from the air outlet along the air passage. When the liquid level in the box exceeds the floating ring 2, the floating ring 2 floats up with the increase of the liquid level to block the air inlet, thereby preventing the liquid from being sucked into the valve body 1.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A valve structure for preventing water inhalation, characterized in that: include: Valve body (1) and float ring (2), wherein: A floating ring (2) is mounted on a valve body (1) that can move up and down. The valve body (1) is provided with an upper limit portion (3) at a position above the floating ring (2) to prevent the floating ring (2) from escaping from its top, and the valve body (1) is provided with a lower limit portion (4) at a position below the floating ring (2) to prevent the floating ring (2) from escaping from its bottom. The valve body (1) has an air inlet, an air outlet and an air passage connecting the air inlet and the air outlet, and when the floating ring (2) abuts against the upper limit portion (3), the air inlet is blocked by the floating ring (2) and enters a closed state.

2. A water-intake-blocking valve structure according to claim 1, characterized in that: The outer periphery of the valve body (1) at the top thereof has a semi-enclosed cavity with an open lower end, the air inlet and the upper limit portion (3) are both located inside the semi-enclosed cavity, and when the floating ring (2) abuts against the upper limit portion (3), the floating ring (2) blocks the lower end of the semi-enclosed cavity so that a closed space is formed inside the semi-enclosed cavity.

3. A water-intake-blocking valve structure according to claim 2, characterized in that: The upper limit portion (3) comprises at least an outer ring body (31) sleeved on the valve body (1); the top of the valve body (1) is provided with a valve cap (5), the valve cap (5) has an outer brim, and the outer brim covers the upper end portion of the valve body (1) inside thereof to form a semi-covered cavity inside thereof; the inner diameter of the floating ring (2) is smaller than the outer diameter of the outer ring body (31), and the outer diameter of the floating ring (2) is larger than the diameter of the outer brim.

4. A water-intake-blocking valve structure according to claim 3, characterized in that: The port of the outer edge is located at the same height as the lower end of the outer ring body (31), the inner edge of the port of the outer edge and the outer edge of the lower port of the outer ring body (31) are respectively provided with chamfers A1 and A2, the inner edge and the outer edge of the top of the floating ring (2) are respectively provided with chamfers B1 and B2, and the span between chamfers A1 and A2 is adapted to the width between chamfers B1 and B2.

5. A water-intake-blocking valve structure according to claim 3, characterized in that: The upper limit portion (3) further comprises an inner ring body (32) located inside the ring body, and a connecting surface (33) connecting the inner ring body (32) and the outer ring body (31); the top end of the outer ring body (31) is higher than the upper port of the valve body (1); the connecting surface (33) is an annular surface and is clamped on the edge of the port of the valve body (1); the inner ring body (32) is located inside the valve body (1) and is connected to the airway; the valve cap (5) is located above the upper limit portion (3) and covers the upper limit portion (3); the air inlet is located at the junction of the valve cap (5) and the upper limit portion (3).

6. A water-intake-blocking valve structure according to claim 5, characterized in that: The connecting surface (33) is located between the two ends of the outer ring body (31), and a plurality of circumferentially arranged avoidance holes are provided on the connecting surface (33); a plurality of circumferentially arranged positioning posts (11) are provided on the top of the valve body (1), and each positioning post (11) passes through each avoidance hole in a one-to-one correspondence, and the height of each positioning post (11) is higher than the top of the outer ring body (31); and the valve cap (5) is fixed to each positioning post (11) by a threaded fastener.

7. A water-intake-blocking valve structure according to claim 6, characterized in that: The inner top surface of the valve cap (5) is provided with a plurality of positioning sleeves (51), each positioning sleeve (51) is correspondingly sleeved on the positioning column (11) and forms a seal with the outer wall of the positioning sleeve (51); the threaded fastener is screwed into the positioning column (11) from the top of the valve cap (5).

8. A water-intake-blocking valve structure according to claim 5, characterized in that: An inner flange (12) is provided on the inner side of the upper port of the valve body (1), the positioning column (11) is located on the inner flange (12), and the connecting surface (33) is in contact with the inner flange (12).

9. A water-intake-blocking valve structure according to claim 1, characterized in that: The lower limit portion (4) is an annular structure, and is provided with a plurality of circumferentially arranged holes at a position directly below the floating ring (2).

10. A water suction blocking valve structure according to any one of claims 1 to 9, characterized in that: It also includes an outer cover body (6) which is arranged outside the valve body (1), and a plurality of filter holes are densely distributed on the outer cover body (6); Preferably, a handle is provided on the top of the outer cover (6).

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