CN218236155U

CN218236155U - Drain valve

Info

Publication number: CN218236155U
Application number: CN202221511114.9U
Authority: CN
Inventors: 周敏杰; 周鹏
Original assignee: Changzhou Amg Refrigeration Equipment Co ltd
Current assignee: Changzhou Amg Refrigeration Equipment Co ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2023-01-06
Anticipated expiration: 2032-06-16

Abstract

The utility model relates to a bleeder valve, including valve body and valve gap, valve body upper end opening, install the valve gap on this opening, the valve body lower extreme is equipped with the liquid outlet, its lateral wall is equipped with the inlet, be equipped with the valve rod in the valve body, be connected with the valve clack on the lower extreme outer wall of valve rod, the valve gap is worn out and the handle is pressed in the connection to the valve rod upper end, the lower part of valve rod is equipped with pressure relief mechanism, pressure relief mechanism is including offering the row's pressure hole on the lateral wall of valve rod lower part, be located the first breach of valve rod lower extreme and the row's of intercommunication between them pressure passageway, be equipped with first spring in the first breach, the upper end of first spring is equipped with first steel ball, first spring housing has the spring guide pin bushing, the through-hole has been seted up to the bottom of valve clack. When the pressure is greater than the elastic force of the first spring, liquid enters the pressure discharge channel from the pressure discharge hole, presses the first steel ball and the first spring downwards, descends in the spring guide sleeve, flows into the spring guide sleeve from the pressure discharge channel, then flows out through the through hole at the bottom of the valve clack, plays a role in pressure relief, and can discharge accumulated liquid between the liquid discharge valve and the stop valve.

Description

Drain valve

Technical Field

The utility model belongs to the technical field of refrigeration trade technique and specifically relates to a bleeder valve.

Background

The compressor oil is needed to be used when the refrigerating unit operates, and the compressor oil needs to be replaced after the refrigerating unit operates for a certain time, so that the liquid discharge valves are arranged in all the devices of the refrigerating unit. The existing liquid discharging valve needs to be opened and closed by rotating a hand wheel, and under the emergency condition that pressure needs to be quickly discharged, the time spent on rotating the hand wheel is too long, so that potential safety hazards exist; at present, a liquid discharging valve pressed by a handle appears in the market, accumulated liquid is generated between the liquid discharging valve and a stop valve in the using process, the discharged accumulated liquid needs to exceed the opening pressure of a valve body, but the pressure relief is not in place due to the fact that a valve core of the liquid discharging valve is not provided with the structure, and therefore the liquid discharging valve is not suitable for emergency pressure relief in the refrigeration industry; in addition, the handle and the valve rod are only hinged, the handle can swing freely, and potential safety hazards also exist.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: overcomes the defects in the prior art and provides a liquid discharging valve.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a tapping valve, includes valve body and valve gap, valve body upper end opening installs the valve gap on this opening, and the valve body lower extreme is equipped with the liquid outlet, and its lateral wall is equipped with the inlet, is equipped with the valve rod in the valve body, be connected with the valve clack on the lower extreme outer wall of valve rod, the valve rod upper end is worn out the valve gap and is connected to press the handle, and the lower part of valve rod is equipped with pressure relief mechanism, pressure relief mechanism is including offering row pressure hole on the lateral wall of valve rod lower part, the first breach that is located the valve rod lower extreme and the row pressure passageway that communicates both, be equipped with first spring in the first breach, the upper end of first spring is equipped with first steel ball, and first spring overcoat has the spring guide pin bushing, the through-hole has been seted up to the bottom of valve clack.

When the pressure is greater than the elastic force of the first spring, liquid enters the pressure discharge channel from the pressure discharge hole and presses the first steel ball downwards, the first steel ball compresses the first spring, the first steel ball and the first spring descend in the spring guide sleeve, and the liquid flows into the spring guide sleeve from the pressure discharge channel and then flows out through the through hole at the bottom of the valve clack to play a role in pressure relief.

Furthermore, a second spring is arranged on the outer wall of the valve clack, and two ends of the second spring are respectively abutted against the bottom surfaces of the valve clack and the valve cover.

The two ends of the second spring are respectively propped against the bottom surfaces of the valve clack and the valve cover to strengthen the tight propping of the valve clack against the valve body

Furthermore, the valve rod is connected with the pressing handle through a positioning pin, a second notch is formed in the upper end of the valve rod, a third spring is arranged in the second notch, a second steel ball is arranged on the third spring, and the second steel ball abuts against the inner wall of the pressing handle.

So set up, press the handle and withstand by the second steel ball through the effort of third spring, can not swing at will, avoid producing the potential safety hazard.

Furthermore, a limit pin is arranged obliquely below the positioning pin on the pressing handle.

The limiting pin is arranged, so that the stroke of the handle can be limited, and the valve clack is prevented from exerting excessive force on the valve body.

In order to ensure the strength of the pressing handle, the section of the pressing handle is in a shape of '21274', the pressing handle comprises a connecting part and a holding part, the holding part is in a ladder platform structure, corners of the holding part are chamfers, and the connecting part and the holding part are in arc transition.

Furthermore, a first O-shaped sealing ring is arranged between the first steel ball and the upper top wall of the first notch.

Set up first O type sealing washer, prevent the rigid collision of roof on first steel ball and the first breach.

Furthermore, a first sealing gasket is arranged on the bottom surface of the valve clack, a pressing plate is arranged below the first sealing gasket, and a flanging for limiting the pressing plate is arranged on the bottom surface of the valve clack.

So set up, the valve clack need not direct action on the valve body, only needs to change first seal gasket.

In order to ensure the tight connection between the valve rod and the valve clack, a clamp spring and a second O-shaped sealing ring are further arranged at the joint of the valve rod and the valve clack.

In order to ensure the tight connection between the valve body and the valve cover, a second sealing gasket and a third O-shaped sealing ring are further arranged at the joint of the valve body and the valve cover.

In order to ensure the tight connection between the valve rod and the valve cover, a fourth O-ring is further arranged at the joint of the valve rod and the valve cover.

Furthermore, a stroke groove is formed in the valve rod above the first notch, and a cylindrical pin connected with the valve body is arranged in the stroke groove.

Set up stroke groove and cylindric lock, guarantee the effective motion of valve rod, avoid excessive motion.

The utility model has the advantages that: the pressure relief mechanism is arranged at the lower part of the valve rod, when the pressure is greater than the elastic force of the first spring, the liquid enters the pressure relief channel from the pressure relief hole, the first steel ball is pressed downwards, the first steel ball compresses the first spring, the first steel ball and the first spring descend in the spring guide sleeve, the liquid flows into the spring guide sleeve from the pressure relief channel and then flows out through the through hole at the bottom of the valve clack, the pressure relief effect is realized, and the accumulated liquid between the liquid discharge valve and the stop valve can be discharged; the pressing handle is supported by the second steel ball through the acting force of the third spring, cannot swing randomly, and avoids potential safety hazards.

Drawings

The present invention will be further described with reference to the accompanying drawings and embodiments.

Fig. 1 is a schematic structural view of the liquid discharge valve of the present invention when closed.

Fig. 2 is a schematic structural view of the tapping valve of the present invention.

In the figure: 1. the valve comprises a valve body, a liquid outlet 1-1, a liquid inlet 1-2, a valve cover 2, a valve rod 3, a valve clack 4, a pressing handle 5, a first spring 6, a first steel ball 7, a spring guide sleeve 8, a second spring 9, a positioning pin 10, a third spring 11, a second steel ball 13, a limiting pin 14, a first O-shaped sealing ring 15, a first sealing gasket 16, a pressing plate 17, a snap spring 18, a second O-shaped sealing ring 19, a second sealing gasket 20, a third O-shaped sealing ring 21, a fourth O-shaped sealing ring 22, a pressure discharge hole 23, a first notch 31, a second notch 32, a pressure discharge channel 33, a through hole 40, a flanging 41, a connecting part 51 and a holding part 52.

Detailed Description

The invention will now be further described with reference to the accompanying drawings. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1, a tapping valve comprises a valve body 1 and a valve cover 2, wherein the upper end of the valve body 1 is open, the valve cover 2 is installed on the opening, a liquid outlet 1-1 is formed in the lower end of the valve body 1, a liquid inlet 1-2 is formed in the side wall of the valve body 1, a valve rod 3 is arranged in the valve body 1, a valve clack 4 is connected to the outer wall of the lower end of the valve rod 3, the upper end of the valve rod 3 penetrates out of the valve cover 2 and is connected with a pressing handle 5, a pressure relief mechanism is arranged on the lower portion of the valve rod 3 and comprises a pressure discharge hole 23 formed in the side wall of the lower portion of the valve rod 3, a first notch 31 located at the lower end of the valve rod 3 and a pressure discharge channel 33 communicated with the pressure discharge hole and the pressure discharge hole, a first spring 6 is arranged in the first notch 31, a first steel ball 7 is arranged at the upper end of the first spring 6, a spring guide sleeve 8 is sleeved outside the first spring 6, and a through hole 40 is formed in the bottom of the valve clack 4. And a second spring 9 is arranged on the outer wall of the valve clack 4, and two ends of the second spring 9 are respectively abutted against the valve clack 4 and the bottom surface of the valve cover 2.

Wherein, the valve rod 3 is connected with the pressing handle 5 through the locating pin 10, the second breach 32 has been seted up to the upper end of valve rod 3, is equipped with the third spring 11 in the second breach 32, is equipped with the second steel ball 13 on the third spring 11, and the second steel ball 13 offsets with the inner wall of pressing handle 5. A limit pin 14 is arranged on the pressing handle 5 obliquely below the positioning pin 10. The section of the pressing handle 5 is in a shape of' 21274, the pressing handle 5 consists of a connecting part 51 and a holding part 52, the holding part 52 is in a ladder platform structure, corners of the holding part 52 are chamfers, and the connecting part 51 and the holding part 52 are in arc transition.

In order to ensure the sealing performance of the whole tapping valve, a first O-shaped sealing ring 15 is arranged between the first steel ball 7 and the top wall of the first notch 31. The bottom surface of the valve clack 4 is provided with a first sealing gasket 16, a pressing plate 17 is arranged below the first sealing gasket 16, and the bottom surface of the valve clack 4 is provided with a flanging 41 for limiting the pressing plate 17. And a clamp spring 18 and a second O-shaped sealing ring 19 are arranged at the joint of the valve rod 3 and the valve clack 4. The joint of the valve body 1 and the valve cover 2 is provided with a second sealing gasket 20 and a third O-shaped sealing ring 21. And a fourth O-shaped sealing ring 22 is arranged at the joint of the valve rod 3 and the valve cover 2.

When pressure relief is needed in emergency, the pressing handle 5 is pressed downwards manually to drive the valve rod 3 to rise, meanwhile, the valve clack 4 is far away from the liquid inlet 1-2, the valve clack 4 compresses the second spring 9, and meanwhile, the pressing handle 5 compresses the third spring 11 to completely open the valve body 1; as shown in fig. 2, the liquid flows out from the liquid inlet 1-2 to the liquid outlet 1-1; when the pressure relief is finished, as long as the hand releases the pressing handle 5, the valve rod 3 descends rapidly under the action of the elastic force of the second spring 9, the valve clack 4 blocks the liquid outlet 1-1, the third spring 11 recovers, and the limit pin 14 is blocked by the valve rod 3; as shown in fig. 1, the valve will close immediately upon release of the handle, thus protecting the user and the environment from damage from refrigerant leakage.

When the pressure in the valve body 1 is larger than the elastic force of the first spring 6, the liquid enters the pressure discharge channel 33 from the pressure discharge hole 23, the first steel ball 7 is pressed downwards, the first steel ball 7 compresses the first spring 6, the first steel ball 7 and the first spring 6 descend in the spring guide sleeve 8, the liquid flows into the spring guide sleeve 8 from the pressure discharge channel 33 and then flows out through the through hole 40 in the bottom of the valve clack 4, and the pressure relief effect is achieved.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a bleeder valve, includes valve body (1) and valve gap (2), valve body (1) upper end opening installs valve gap (2) on this opening, and valve body (1) lower extreme is equipped with liquid outlet (1-1), and its lateral wall is equipped with inlet (1-2), is equipped with valve rod (3) in valve body (1), be connected with valve clack (4), its characterized in that on the lower extreme outer wall of valve rod (3): valve gap (2) are worn out and press handle (5) are connected to valve rod (3) upper end, and the lower part of valve rod (3) is equipped with pressure relief mechanism, pressure relief mechanism presses passageway (33) including offering row pressure hole (23) on valve rod (3) lower part lateral wall, first breach (31) that are located valve rod (3) lower extreme and the row that communicates both, be equipped with first spring (6) in first breach (31), the upper end of first spring (6) is equipped with first steel ball (7), and first spring (6) overcoat has spring guide pin bushing (8), through-hole (40) have been seted up to the bottom of valve clack (4).

2. The bleeder valve as defined in claim 1, wherein: and a second spring (9) is arranged on the outer wall of the valve clack (4), and two ends of the second spring (9) are respectively propped against the bottom surfaces of the valve clack (4) and the valve cover (2).

3. The bleeder valve as defined in claim 1, wherein: the valve rod (3) is connected with the pressing handle (5) through a positioning pin (10), a second notch (32) is formed in the upper end of the valve rod (3), a third spring (11) is arranged in the second notch (32), a second steel ball (13) is arranged on the third spring (11), and the second steel ball (13) is abutted to the inner wall of the pressing handle (5).

4. The bleeder valve as defined in claim 3, wherein: and a limiting pin (14) is arranged on the pressing handle (5) and below the positioning pin (10) in an inclined manner.

5. The bleeder valve as defined in claim 1, wherein: the section of the pressing handle (5) is in a '21274', the pressing handle (5) consists of a connecting part (51) and a holding part (52), the holding part (52) is in a ladder platform structure, corners of the holding part are chamfers, and the connecting part (51) and the holding part (52) are in arc transition.

6. The bleeder valve as defined in claim 1, wherein: a first O-shaped sealing ring (15) is arranged between the first steel ball (7) and the upper top wall of the first notch (31).

7. The bleeder valve as defined in claim 1, wherein: the bottom surface of the valve clack (4) is provided with a first sealing gasket (16), a pressing plate (17) is arranged below the first sealing gasket (16), and the bottom surface of the valve clack (4) is provided with a flanging (41) for limiting the pressing plate (17).

8. The bleeder valve as defined in claim 1, wherein: and a clamp spring (18) and a second O-shaped sealing ring (19) are arranged at the joint of the valve rod (3) and the valve clack (4).

9. The bleeder valve as defined in claim 1, wherein: and a second sealing gasket (20) and a third O-shaped sealing ring (21) are arranged at the joint of the valve body (1) and the valve cover (2).

10. The bleeder valve as defined in claim 1, wherein: and a fourth O-shaped sealing ring (22) is arranged at the joint of the valve rod (3) and the valve cover (2).