CN219198115U

CN219198115U - Fluorine-adding single meter valve with good leak-proof performance

Info

Publication number: CN219198115U
Application number: CN202223479123.7U
Authority: CN
Inventors: 周柏林
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-06-16
Anticipated expiration: 2032-12-26

Abstract

The utility model discloses a fluorine-added single-meter valve with good leakage-proof performance, which comprises a valve body, a first mounting groove, a second mounting groove, a third mounting groove, a fourth mounting groove, a fifth mounting groove, a first joint, a second joint, a pressure gauge, a fixing sleeve, a valve rod, a sealing block, a first sealing ring and a second sealing ring, wherein the valve body is provided with a cylindrical fourth mounting groove, the bottom of the fourth mounting groove is provided with a sealing boss, the inner wall of the fourth mounting groove is provided with an inner thread, a fixing sleeve is screwed on the fourth mounting groove, and the fixing sleeve consists of a limit head and a stud. According to the utility model, when the valve rod rotates, the second sealing ring only rubs with the first rod body with a smooth surface, the friction force born by the second sealing ring is small, particularly when fluorine is added, the second sealing ring can be hardened due to low temperature, the second sealing ring can be better prevented from being worn by the small friction force, the sealing effect and the leakage-proof performance are ensured, and the service life of the second sealing ring is prolonged.

Description

Fluorine-adding single meter valve with good leak-proof performance

[ field of technology ]

The utility model relates to the technical field of valves, in particular to the technical field of single-meter valves.

[ background Art ]

The single-meter valve is a common device for adding freon refrigerant to refrigeration equipment such as an air conditioner, a refrigerator and the like. The existing fluorine-adding single-meter valve is characterized in that a valve core is sleeved on a threaded valve rod, when the valve core is used, the threaded valve rod rotates forwards or backwards to stretch forwards or backwards against the valve core, and as a sealing ring is arranged on the valve core, the service life of the sealing ring is influenced by friction force generated in the stretching process of the valve core, and particularly the service life of the sealing ring is influenced by damage and leakage caused by friction force generated in the stretching process of pushing the valve core by rotating the valve rod while the temperature of the sealing ring on the valve core is extremely low and hard during fluorine adding.

[ utility model ]

The utility model aims to solve the problems in the prior art, and provides the fluorine-added single-meter valve with good leak-proof performance, so that the single-meter valve has good sealing performance and is not easy to leak.

In order to achieve the above purpose, the utility model provides a fluorine adding single meter valve with good leakage resistance, which comprises a valve body, a first mounting groove, a second mounting groove, a third mounting groove, a fourth mounting groove, a fifth mounting groove, a first joint, a second joint, a pressure gauge, a fixing sleeve, a valve rod, a sealing block, a first sealing ring and a second sealing ring, wherein the valve body is provided with a cylindrical fourth mounting groove, the groove bottom of the fourth mounting groove is provided with a first sealing boss, the inner wall of the fourth mounting groove is provided with internal threads, a fixing sleeve is screwed on the fourth mounting groove, the fixing sleeve consists of a limit head and a stud, the stud is screwed on the fourth mounting groove, the limit head is abutted against the valve body, the closest to the limit head is provided with a first annular groove, the opening end of the fourth mounting groove is provided with a first second annular groove, the first annular groove and the limit head jointly enclose a first sealing cavity, the first sealing ring is arranged in the sealing cavity, each inner wall of the first sealing ring and the sealing cavity is tightly contacted, the fixing sleeve is internally provided with a first sealing boss, the fixing sleeve is internally provided with a large-diameter rod body and a second rod body is sequentially connected with a third through hole, the second rod body is sequentially arranged on the inner wall of the third rod body is sequentially penetrates through the first through hole, the second rod body is sequentially arranged on the second rod body is provided with a third through hole, the first through hole is sequentially penetrates through the second through hole is formed in the first through hole, the first through hole is provided with a third through hole, and the third through hole is provided with a three through hole is formed in the first through hole through the sealing valve body, and the sealing valve through the sealing valve body is respectively, the inner side of the second sealing ring is tightly contacted with the outer wall of the first rod body, the tail end of the third rod body is provided with an embedded groove, a sealing block is embedded in the embedded groove, the sealing boss is propped against the sealing block, a cylindrical first mounting groove is formed in the valve body, an inner thread is arranged on the inner wall of the first mounting groove, a first joint is screwed on the first mounting groove, the first mounting groove and the fourth mounting groove are communicated through a first communication hole, one opening end of the first communication hole is formed in the center of the groove bottom of the first mounting groove, the other opening end of the first communication hole is formed in the end, close to the sealing block, of the sealing boss, a cylindrical second mounting groove is formed in the valve body, an inner thread is arranged on the inner wall of the second mounting groove, the second joint is screwed on the second mounting groove, the second mounting groove and the fourth mounting groove are communicated through a second communication hole, one opening end of the second communication hole is arranged at the center of the bottom of the second mounting groove, the other opening end of the second communication hole is arranged on the side wall of the fourth mounting groove, the stud does not cover the opening end of the second communication hole, a third mounting groove is arranged on the valve body, a transparent observation window is arranged in the third mounting groove, the third mounting groove is communicated with the fourth mounting groove through the third communication hole, one opening end of the third communication hole is arranged at the bottom of the third mounting groove, the other opening end of the third communication hole is arranged on the side wall of the fourth mounting groove, the stud does not cover the opening end of the third communication hole, a cylindrical fifth mounting groove is arranged on the valve body, the fifth mounting groove is intersected with and communicated with the third mounting groove, an inner thread is arranged on the inner wall of the fifth mounting groove, the pressure gauge is screwed on the fifth mounting groove, the pressure gauge does not cover the intersection area of the fifth mounting groove and the third mounting groove.

Preferably, the limit head is provided with a hexagonal prism-shaped screwing section.

Preferably, a sixth mounting groove is formed in the valve body and is used for mounting the hook, and the sixth mounting groove and the fifth mounting groove are located on the same side of the valve body.

Preferably, the sealing boss is in a truncated cone shape, the first mounting groove, the first communication hole, the sealing boss and the fourth mounting groove are all positioned on the same central axis, and the second mounting groove and the second communication hole are positioned on the same central axis.

Preferably, the third mounting groove comprises a first groove body and a second groove body, the first groove body and the second groove body are cylindrical and are located on the same central axis, the inner diameter of the first groove body is larger than the outer diameter of the second groove body, the first groove body is arranged on the outer wall of the valve body, the second groove body is arranged at the groove bottom of the first groove body, internal threads are arranged on the inner wall of the first groove body, a sealing ring is arranged at the groove bottom of the first groove body, a pressing ring is screwed in the first groove body, transparent glass is clamped between the pressing ring and the sealing ring, the pressing ring, the transparent glass and the sealing ring are clamped at the groove bottom of the first groove body, and the pressing ring, the transparent glass and the sealing ring jointly form a transparent penetrating window.

Preferably, the compression ring is provided with a plurality of auxiliary grooves.

The utility model has the beneficial effects that: according to the utility model, when the valve rod rotates, the second sealing ring only rubs with the first rod body with a smooth surface, the friction force born by the second sealing ring is small, particularly when fluorine is added, the second sealing ring can be hardened due to low temperature, the second sealing ring can be better prevented from being worn by the small friction force, the sealing effect and the leakage-proof performance are ensured, and the service life of the second sealing ring is prolonged.

The features and advantages of the present utility model will be described in detail by way of example with reference to the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a front view of a single valve with fluorine of the present utility model having good leak resistance;

FIG. 2 is a front cross-sectional view of a single valve with fluorine of the present utility model having good leak resistance;

FIG. 3 is a side cross-sectional view of a single valve with fluorine of the present utility model having good leak resistance;

FIG. 4 is a cross-sectional view of the retaining cap and valve stem of the single fluorine-containing valve of the present utility model with good leak resistance.

In the figure: 1-valve body, 2-first mounting groove, 3-second mounting groove, 4-third mounting groove, 5-fourth mounting groove, 6-fifth mounting groove, 7-fixed sleeve, 8-valve stem, 10-sixth mounting groove, 20-first joint, 21-first communication hole, 30-second joint, 31-second communication hole, 41-first groove body, 42-second groove body, 43-sealing ring, 44-transparent glass, 45-compression ring, 46-auxiliary groove, 47-third communication hole, 50-sealing boss, 51-second annular groove, 52-first sealing ring, 60-manometer, 71-first through hole, 72-second through hole, 73-third through hole, 74-third annular groove, 75-second sealing ring, 76-stopper, 77-stud, 78-first annular groove, 80-handle, 81-first rod body, 82-second rod body, 83-third rod body, 84-embedded groove, 85-sealing block.

[ detailed description ] of the utility model

Referring to fig. 1, 2, 3 and 4, the fluorine adding single meter valve with good leak resistance comprises a valve body 1, a first mounting groove 2, a second mounting groove 3, a third mounting groove 4, a fourth mounting groove 5, a fifth mounting groove 6, a first joint 20, a second joint 30, a pressure meter 60, a fixing sleeve 7, a valve rod 8, a sealing block 85, a first sealing ring 52 and a second sealing ring 75, wherein the valve body 1 is provided with a cylindrical fourth mounting groove 5, the groove bottom of the fourth mounting groove 5 is provided with a sealing boss 50, the inner wall of the fourth mounting groove 5 is provided with an inner thread, the fixing sleeve 7 is screwed on the fourth mounting groove 5, the fixing sleeve 7 consists of a limiting head 76 and a stud 77, the stud 77 is screwed on the fourth mounting groove 5, the limiting head 76 is propped against the valve body 1, the position of the stud 77 closest to the limiting head 76 is provided with a first annular groove 78, the opening end of the fourth mounting groove 5 is provided with a second annular groove 51, the first annular groove 78, the second annular groove 51 and the limiting head 76 jointly enclose a sealing cavity, a first sealing ring 52 is arranged in the sealing cavity, the first sealing ring 52 is closely contacted with each inner wall of the sealing cavity, a first through hole 71, a second through hole 72 and a third through hole 73 which are sequentially connected and have sequentially enlarged diameters are arranged in the fixing sleeve 7, an inner thread is arranged on the inner wall of the second through hole 72, the valve rod 8 consists of a first rod body 81, a second rod body 82 and a third rod body 83 which are sequentially connected and have sequentially enlarged diameters, the end part of the first rod body 81 is connected with a handle 80, the first rod body 81 penetrates through the first through hole 71 to extend into the second through hole 72, an outer thread matched with the second through hole 72 is arranged on the second rod body 82, the second rod body 82 is screwed on the second through hole 72, a part of the second rod body 82 is positioned in the third through hole 73, a part of the third rod body 83 is positioned in the third through hole 73, another part of the third rod body 83 is positioned outside the third through hole 73, a third annular groove 74 is arranged on the inner wall of the first through hole 71, the second sealing ring 75 is embedded in the third annular groove 74, the inner side of the second sealing ring 75 is tightly contacted with the outer wall of the first rod body 81, an embedded groove 84 is arranged at the tail end of the third rod body 83, a sealing block 85 is embedded in the embedded groove 84, the sealing boss 50 abuts against the sealing block 85, a cylindrical first mounting groove 2 is arranged on the valve body 1, an internal thread is arranged on the inner wall of the first mounting groove 2, the first joint 20 is screwed on the first mounting groove 2, the first mounting groove 2 and the fourth mounting groove 5 are communicated through a first communication hole 21, an opening end of the first communication hole 21 is arranged at the center of the groove bottom of the first mounting groove 2, the other opening end of the first communication hole 21 is arranged at the end of the sealing boss 50, which is close to the sealing block 85, a cylindrical second installation groove 3 is arranged on the valve body 1, an internal thread is arranged on the inner wall of the second installation groove 3, a second joint 30 is screwed on the second installation groove 3, the second installation groove 3 and the fourth installation groove 5 are communicated through a second communication hole 31, one opening end of the second communication hole 31 is arranged at the center of the groove bottom of the second installation groove 3, the other opening end of the second communication hole 31 is arranged on the side wall of the fourth installation groove 5, the stud 77 does not cover the opening end of the second communication hole 31, a third installation groove 4 is arranged on the valve body 1, a transparent observation window is arranged in the third installation groove 4, the third installation groove 4 and the fourth installation groove 5 are communicated through a third communication hole 47, one opening end of the third communication hole 47 is arranged at the bottom of the third mounting groove 4, the other opening end of the third communication hole 47 is arranged on the side wall of the fourth mounting groove 5, the stud 77 does not cover the opening end of the third communication hole 47, a cylindrical fifth mounting groove 6 is arranged on the valve body 1, the fifth mounting groove 6 is intersected with and communicated with the third mounting groove 4, an internal thread is arranged on the inner wall of the fifth mounting groove 6, the pressure gauge 60 is screwed on the fifth mounting groove 6, and the pressure gauge 60 does not cover the intersection area of the fifth mounting groove 6 and the third mounting groove 4.

The limiting head 76 is provided with a hexagonal prism-shaped screwing section, and the fixing sleeve 7 can be conveniently detached through a wrench.

The valve body 1 is provided with a sixth mounting groove 10, the sixth mounting groove 10 is used for mounting a hook, and the sixth mounting groove 10 and the fifth mounting groove 6 are positioned on the same side of the valve body 1.

The sealing boss 50 is in a truncated cone shape, the first mounting groove 2, the first communication hole 21, the sealing boss 50 and the fourth mounting groove 5 are all positioned on the same central axis, and the second mounting groove 3 and the second communication hole 31 are positioned on the same central axis.

The third mounting groove 4 is composed of a first groove body 41 and a second groove body 42, the first groove body 41 and the second groove body 42 are cylindrical and located on the same central axis, the inner diameter of the first groove body 41 is larger than the outer diameter of the second groove body 42, the first groove body 41 is arranged on the outer wall of the valve body 1, the second groove body 42 is arranged at the groove bottom of the first groove body 41, an inner thread is arranged on the inner wall of the first groove body 41, a sealing ring 43 is arranged at the groove bottom of the first groove body 41, a pressing ring 45 is screwed in the first groove body 41, a piece of transparent glass 44 is clamped between the pressing ring 45 and the sealing ring 43, the pressing ring 45 and the groove bottom of the first groove body 41 clamp the transparent glass 44 and the sealing ring 43, and the pressing ring 45, the transparent glass 44 and the sealing ring 43 jointly form a transparent penetrating window.

The clamping ring 45 is provided with a plurality of auxiliary grooves 46, the number of the auxiliary grooves 46 is preferably 2, the auxiliary grooves 46 are arranged to facilitate the force application to the clamping ring 45, and the clamping ring 45 is convenient to rotate through a tool.

The first through hole 71, the second through hole 72, the third through hole 73, the first rod body 81, the second rod body 82 and the third rod body 83 are positioned on the same central axis, and when the valve rod 8 rotates, gap eccentric between the valve rod 8 and the fixed sleeve cannot occur, so that the valve rod 8 can be always in close contact with the second sealing ring 75, and the sealing performance is ensured.

The working process of the utility model comprises the following steps:

in the working process of the fluorine-added single-meter valve with good leak-proof performance, as the first sealing ring 52 is arranged at the opening of the fourth mounting groove 5, the Freon refrigerant cannot be in large-area contact with the first sealing ring 52, the first sealing ring 52 is not easy to undergo severe thermal expansion and contraction, the first sealing ring 52 is not easy to damage, and the sealing performance is ensured. When the valve rod 8 rotates, the second sealing ring 75 only rubs with the first rod body 81 with a smooth surface, the friction force born by the second sealing ring 75 is small, particularly when fluorine is added, the valve rod 8 can be screwed out outwards, the temperature of the second sealing ring 75 becomes low due to contact with Freon refrigerant, the second sealing ring 75 can be hardened, the second sealing ring 75 can be better prevented from being worn by small friction force, the sealing effect and the leakage-proof performance are guaranteed, and the service life of the second sealing ring is prolonged.

The above embodiments are illustrative of the present utility model, and not limiting, and any simple modifications of the present utility model fall within the scope of the present utility model.

Claims

1. The single table valve of adding fluorine that leak protection performance is good, its characterized in that: comprises a valve body (1), a first mounting groove (2), a second mounting groove (3), a third mounting groove (4), a fourth mounting groove (5), a fifth mounting groove (6), a first joint (20), a second joint (30), a pressure gauge (60), a fixing sleeve (7), a valve rod (8), a sealing block (85), a first sealing ring (52) and a second sealing ring (75), wherein a cylindrical fourth mounting groove (5) is arranged on the valve body (1), a sealing boss (50) is arranged at the groove bottom of the fourth mounting groove (5), an internal thread is arranged on the inner wall of the fourth mounting groove (5), the fixing sleeve (7) is screwed on the fourth mounting groove (5), the fixing sleeve (7) consists of a limiting head (76) and a stud (77), the stud (77) is screwed on the fourth mounting groove (5), the limiting head (76) is propped against the valve body (1), a first annular groove (78) is arranged at the position closest to the limiting head (76), an opening end of the fourth mounting groove (5) is provided with a first annular groove (51), a second annular groove (51) is arranged at the opening end of the limiting head (77), the first annular groove (76) is jointly formed in the annular groove (52), the first sealing ring (52) is tightly contacted with each inner wall of the sealing cavity, a first through hole (71), a second through hole (72) and a third through hole (73) which are sequentially connected and have sequentially enlarged diameters are arranged in the fixing sleeve (7), an internal thread is arranged on the inner wall of the second through hole (72), the valve rod (8) consists of a first rod body (81), a second rod body (82) and a third rod body (83) which are sequentially connected and have sequentially enlarged diameters, the end part of the first rod body (81) is connected with a handle (80), the first rod body (81) penetrates through the first through hole (71) to extend into the second through hole (72), an external thread matched with the second through hole (72) is arranged on the second rod body (82), the second rod body (82) is screwed on the second through hole (72), one part of the second rod body (82) is positioned in the third through hole (73), the other part of the third rod body (83) is positioned outside the third through hole (73), a third annular groove (74) is formed in the first inner wall (71), a third annular groove (74) is embedded in the inner wall (74), the third annular groove (74) is embedded in the third annular groove (74), the embedded groove (84) is embedded with a sealing block (85), the sealing boss (50) is propped against the sealing block (85), a first cylindrical mounting groove (2) is formed in the valve body (1), an inner thread is arranged on the inner wall of the first mounting groove (2), the first joint (20) is screwed on the first mounting groove (2), the first mounting groove (2) and the fourth mounting groove (5) are communicated through a first communication hole (21), one opening end of the first communication hole (21) is formed in the center of the groove bottom of the first mounting groove (2), the other opening end of the first communication hole (21) is formed in the end, close to the sealing block (85), of the sealing boss (50), a second cylindrical mounting groove (3) is formed in the valve body (1), an inner thread is arranged on the inner wall of the second mounting groove (3), the second joint (30) is screwed on the second mounting groove (3), one opening end of the second communication hole (31) is formed between the second mounting groove (3) and the fourth mounting groove (5) through a second communication hole (31), the other opening end of the second communication hole (31) is formed in the groove bottom of the second communication hole (31), a third mounting groove (4) is formed in the valve body (1), a transparent observation window is arranged in the third mounting groove (4), the third mounting groove (4) is communicated with the fourth mounting groove (5) through a third communication hole (47), one opening end of the third communication hole (47) is formed in the groove bottom of the third mounting groove (4), the other opening end of the third communication hole (47) is formed in the side wall of the fourth mounting groove (5), a stud (77) does not cover the opening end of the third communication hole (47), a fifth cylindrical mounting groove (6) is formed in the valve body (1), the fifth mounting groove (6) is intersected with and communicated with the third mounting groove (4), an inner thread is formed in the inner wall of the fifth mounting groove (6), a pressure gauge (60) is screwed on the fifth mounting groove (6), and the pressure gauge (60) does not cover the intersected area of the fifth mounting groove (6) and the third mounting groove (4).

2. The leak-proof, single valve with fluorine of claim 1, wherein: the limiting head (76) is provided with a hexagonal prism-shaped screwing section.

3. The leak-proof, single valve with fluorine of claim 1, wherein: a sixth mounting groove (10) is formed in the valve body (1), the sixth mounting groove (10) is used for mounting a hook, and the sixth mounting groove (10) and the fifth mounting groove (6) are located on the same side of the valve body (1).

4. The leak-proof, single valve with fluorine of claim 1, wherein: the sealing boss (50) is in a truncated cone shape, the first mounting groove (2), the first communication hole (21), the sealing boss (50) and the fourth mounting groove (5) are all positioned on the same central axis, and the second mounting groove (3) and the second communication hole (31) are positioned on the same central axis.

5. The leak-proof, single valve with fluorine of claim 1, wherein: the third mounting groove (4) comprises first cell body (41) and second cell body (42), first cell body (41) all are cylindric and are located same axis with second cell body (42), the internal diameter of first cell body (41) is greater than the external diameter of second cell body (42), first cell body (41) is seted up on the outer wall of valve body (1), the tank bottom at first cell body (41) is seted up to second cell body (42), be equipped with the internal thread on the inner wall of first cell body (41), sealing ring (43) have been placed to the tank bottom of first cell body (41), screw up a clamp ring (45) in first cell body (41), clamp a transparent glass (44) between clamp ring (45) and sealing ring (43), clamp transparent glass (44) and sealing ring (43) are pressed from both sides to the tank bottom of clamp ring (45) and first cell body (41), clamp ring (45), transparent glass (44), sealing ring (43) constitute transparent window that runs through jointly.

6. The leak-proof and good fluorine addition single gauge valve according to claim 5, wherein: a plurality of auxiliary grooves (46) are formed in the compression ring (45).

7. The leak-proof, single valve with fluorine of claim 1, wherein: the first through hole (71), the second through hole (72), the third through hole (73), the first rod body (81), the second rod body (82) and the third rod body (83) are positioned on the same central axis.