CN218761626U

CN218761626U - Check valve

Info

Publication number: CN218761626U
Application number: CN202222956671.8U
Authority: CN
Inventors: 王春生; 黄志刚; 张运星
Original assignee: Shenzhen Zhongding Air Conditioner Purification Co ltd
Current assignee: Shenzhen Zhongding Air Conditioner Purification Co ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-03-28
Anticipated expiration: 2032-11-07

Abstract

The utility model discloses a check valve, including valve case, last valve case, lower valve case, telescopic machanism, spout, slide bar, spring, apopore, first contrary mechanism, water guide sleeve and connection montant, the inboard of going up valve case is provided with apopore and cavity, the inboard of valve case is provided with the inlet opening down, the apopore communicates with each other with the cavity, the cavity communicates with each other with the inlet opening, the inboard of cavity is provided with first contrary mechanism, first contrary mechanism includes connecting block, seal cover, crosses water hole and water guide sleeve, water guide sleeve's lateral wall and the inside wall fixed connection of cavity, vertically run through on the water guide sleeve and seted up the water hole, when stopping the drainage, under the effect of spring rebound force, promote the connecting block downstream in the first contrary mechanism, and then make the connecting block downstream to make seal cover and water guide sleeve support tightly and closely laminate, thereby carry out the shutoff to crossing the water hole, can be stable block off and prevent the water reflux.

Description

Check valve

Technical Field

The utility model relates to the technical field of valves, specifically a check valve.

Background

Generally, an air conditioning apparatus of an air conditioner or a heating apparatus is provided with a condensed water discharge line for guiding condensed water generated in use to a water tank; in order to prevent the discharged condensed water from flowing back to the machine body, the discharge line is often provided with a check valve. The check valve comprises a body and a stop ball, wherein the body is provided with a containing chamber, a water inlet end and a water outlet end which are communicated with the containing chamber, and the stop ball is positioned in the containing chamber. When the check valve is used, the check valve needs to be arranged in the pipeline in a mode of being vertical to the ground, so that the stop ball can be stopped at the water inlet of the water inlet end by depending on the gravity, and thus when condensed water continuously enters from the water inlet end, the generated continuous water pressure can impact the stop ball, the stop ball is far away from the water inlet, and the condensed water can be discharged to the water outlet end. On the contrary, when the condensed water stops entering the water inlet end, the stopping ball can stop at the water inlet end again due to gravity, and the condensed water remained at the water outlet end is prevented from flowing back from the water inlet end.

Chinese utility model patent with publication number CN203098964U, a check valve of a drainage device for air conditioning equipment, includes: the body is provided with a water inlet shell, a water outlet shell and a containing chamber defined by the water inlet shell and the water outlet shell together, the water inlet shell is provided with a water inlet, a water inlet channel communicated with the water inlet and a containing groove communicated with the water inlet channel, and the water outlet shell is provided with a water outlet, a water outlet channel communicated with the water outlet and an annular protrusion embedded into the containing groove; the hollow elastic body is arranged in the containing chamber of the body and provided with a chamber communicated with the water inlet of the body, an end part which is relatively close to the water outlet of the body and provided with a notch, a body part connected with the end part and a head part which extends out of the body part in an annular shape, the end part is provided with two valve plates which extend out of the body part respectively, the tail ends of the valve plates are partially connected in an abutting mode and partially fixedly connected to each other to form the notch, the end part can elastically deform under the action of water pressure to open the notch and can elastically return after the action of the water pressure disappears to close the notch, and the head part is contained in the containing groove of the water inlet shell and is tightly fixed between the tail end of the annular protrusion and the bottom wall of the containing groove.

The check valve in the prior art opens or closes the incision by elastically deforming the two elastic flaps at the end of the hollow elastic body, but the two elastic flaps are likely to deform and difficult to completely close in practical use, so that water is easy to flow back.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a check valve to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a check valve, includes the valve case, the valve case includes valve housing and lower valve housing, the inboard of going up valve housing is provided with apopore and cavity, the inboard of valve housing is provided with the inlet opening down, the apopore communicates with each other with the cavity, the cavity communicates with each other with the inlet opening, the inboard of cavity is provided with first check mechanism, first check mechanism includes connecting block, seal cover, crosses water hole and water guide cover, the lateral wall of water guide cover and the inside wall fixed connection of cavity, the water guide is sheathe in and is vertically run through and has been seted up the water hole, the connecting block sets up in the top of water guide cover, the outside of connecting block is located to the fixed cover of seal cover, the seal cover supports tightly to laminate with the upper end of water guide cover, connecting block top symmetry is provided with two telescopic machanism, telescopic machanism includes spout, slide bar and spring, the spout is vertical to be seted up on valve housing, the slide bar slides and cup joints the inboard in the spout, the outside of slide bar is located to the spring housing.

As a further aspect of the present invention: the bottom end of the spring is fixedly connected with the top of the connecting block, and the top end of the spring is fixedly connected with the top of the inner side of the cavity.

As the utility model discloses further scheme again: the cavity is characterized in that a second check mechanism is arranged below the first check mechanism on the inner side of the cavity, the second check mechanism is identical to each part of the first check mechanism in specification, a connecting block top fixedly connected with a connecting vertical rod is arranged in the second check mechanism, and the top end of the connecting vertical rod penetrates through a sealing sleeve in the first check mechanism and then is fixedly connected with the bottom of the connecting block.

As a further aspect of the present invention: the seal cover is made of rubber.

As a further aspect of the present invention: the sealing sleeve is arranged right opposite to the water passing hole.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through the valve case, go up the valve casing, lower valve casing, telescopic machanism, the spout, the slide bar, a spring, the apopore, first contrary mechanism that ends, the connecting block, the seal cover, the water hole of crossing, water guide sleeve, the inlet opening, the cavity, connect the cooperation of montant, when stopping the drainage, under the effect of spring bounce-back force, promote the connecting block downstream in the first contrary mechanism that ends, and then make the connecting block downstream, and make seal cover and water guide sleeve support tightly and closely laminate, thereby the seal cover carries out the shutoff to crossing the water hole, can be stable carry out the shutoff and prevent the water backward flow, excellent in use effect.

2. Through the two non-return mechanisms of the first non-return mechanism and the second non-return mechanism, the condition of water backflow is further prevented.

Drawings

Fig. 1 is a schematic structural view of a check valve.

Fig. 2 is a plan view of a water guide sleeve in the check valve.

Fig. 3 is a schematic view of the connections in the check valve.

Shown in the figure: the valve comprises a valve shell 1, an upper valve shell 101, a lower valve shell 102, a telescopic mechanism 2, a sliding groove 201, a sliding rod 202, a spring 203, a water outlet hole 3, a first check mechanism 4, a connecting block 401, a sealing sleeve 402, a water through hole 403, a water guide sleeve 404, a second check mechanism 5, a water inlet hole 6, a cavity 7 and a connecting vertical rod 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-3, in an embodiment of the present invention, a check valve, including a valve housing 1, the valve housing 1 includes an upper valve housing 101 and a lower valve housing 102, the inner side of the upper valve housing 101 is provided with a water outlet 3 and a chamber 7, the inner side of the lower valve housing 102 is provided with a water inlet 6, the water outlet 3 is communicated with the chamber 7, the chamber 7 is communicated with the water inlet 6, the inner side of the chamber 7 is provided with a first check mechanism 4, the first check mechanism 4 includes a connecting block 401, a sealing sleeve 402, a water through hole 403 and a water guide sleeve 404, the outer side wall of the water guide sleeve 404 is fixedly connected with the inner side wall of the chamber 7, the water through hole 403 is longitudinally penetrated through the water guide sleeve 404, the connecting block 401 is disposed above the water guide sleeve 404, the sealing sleeve 402 is fixedly disposed at the outer side of the connecting block 401, the sealing sleeve 402 is disposed right opposite to the water through hole 403, the sealing sleeve 402 and the upper end of the water guide sleeve 404 are tightly attached, thereby blocking the water through hole 403, the top of the connecting block 401 is symmetrically disposed with two telescopic mechanisms 2, the telescopic mechanisms 2 include a sliding chute 201, a sliding rod 202 and a spring 203 are disposed at the inner side of the sliding chute 201, the sliding rod 202 and a vertical upper end of the sliding sleeve disposed on the upper valve housing 101.

The bottom end of the spring 203 is fixedly connected with the top of the connecting block 401, and the top end of the spring 203 is fixedly connected with the top of the inner side of the cavity 7.

The inboard below that is located first contrary mechanism 4 of chamber 7 is provided with the contrary mechanism 5 of ending of second, and the contrary mechanism 5 of ending of second is the same with each part specification homogeneous phase of first contrary mechanism 4, and connecting block 401 top fixedly connected with in the contrary mechanism 5 of second connects montant 8, and the top of connecting montant 8 is passed behind the seal cover 402 in the first contrary mechanism 4 and is connected with connecting block 401 bottom fixed connection.

The sealing sleeve 402 is made of rubber.

The upper valve housing 101 and the lower valve housing 102 are fixedly connected by bolts, and a seal ring for sealing a joint between the upper valve housing 101 and the lower valve housing 102 is provided.

The utility model discloses a theory of operation is:

when the check valve is used, the check valve is installed in a drainage pipeline, wherein a pipe B in fig. 3 is used for connecting a water outlet pipe of an air conditioner, the pipe A is used for discharging discharged water to a water collecting tank, the pipe A is fixedly connected with an upper valve shell 101 and communicated with a water outlet hole 3, the pipe B is fixedly connected with a lower valve shell 102 and communicated with a water inlet hole 6, water discharged through the air conditioner enters the water inlet hole 6 through the pipe B and then enters a cavity 7 through the water inlet hole 6, water generates water pressure in the cavity 7 to push a connecting block 401 in a second check mechanism 5 to move upwards, and under the drive of a connecting vertical rod 8, the connecting block 401 in the first check mechanism 4 also moves upwards synchronously, at the moment, a sliding rod 202 moves towards a sliding groove 201, a spring 203 is compressed, when the connecting block 401 in the first check mechanism 4 and the connecting block 401 in the second check mechanism 5 both move upwards, the sealing sleeve 402 is driven to move upwards, so that the sealing sleeve 402 does not block the water outlet hole 403, water can enter the water outlet hole 3 through the water outlet hole 403 and then enters an A through the sealing sleeve 3, the water guide sleeve 203, and finally, the water guide sleeve 402 is pushed to tightly to move downwards to abut against the water collecting tank 401, and the water collecting tank, and the water guide mechanism 401 tightly, so that water guide pipe is pushed to move downwards, and the water guide sleeve 402 tightly abuts against the water guide pipe 401.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A non-return valve comprising a valve housing (1), characterized in that: the valve shell (1) comprises an upper valve shell (101) and a lower valve shell (102), a water outlet (3) and a cavity (7) are arranged on the inner side of the upper valve shell (101), a water inlet hole (6) is formed in the inner side of the lower valve shell (102), the water outlet (3) is communicated with the cavity (7), the cavity (7) is communicated with the water inlet hole (6), a first check mechanism (4) is arranged on the inner side of the cavity (7), the first check mechanism (4) comprises a connecting block (401), a sealing sleeve (402), a water passing hole (403) and a water guide sleeve (404), the outer side wall of the water guide sleeve (404) is fixedly connected with the inner side wall of the cavity (7), the water passing hole (403) longitudinally penetrates through the water guide sleeve (404), the connecting block (401) is arranged above the water guide sleeve (404), the sealing sleeve (402) is fixedly arranged on the outer side of the connecting block (401), the sealing sleeve (402) is tightly attached to the upper end of the water guide sleeve (404), two telescopic mechanisms (2) are symmetrically arranged at the top of the connecting block (401), and the upper telescopic mechanism (2) comprises a sliding chute (201) and an upper sliding groove (201) and a vertical sliding groove (201), the sliding rod (202) is sleeved on the inner side of the sliding groove (201) in a sliding mode, and the spring (203) is sleeved on the outer side of the sliding rod (202).

2. The check valve of claim 1, wherein: the bottom end of the spring (203) is fixedly connected with the top of the connecting block (401), and the top end of the spring (203) is fixedly connected with the top of the inner side of the cavity (7).

3. The check valve of claim 1, wherein: the inboard below that is located first contrary mechanism (4) of ending of cavity (7) is provided with contrary mechanism (5) of second, contrary mechanism (5) of second is the same with each part specification homogeneous phase of first contrary mechanism (4) of ending, connecting block (401) top fixedly connected with in the contrary mechanism (5) of second is connected montant (8), pass behind seal cover (402) in first contrary mechanism (4) of ending with connecting block (401) bottom fixed connection on the top of connecting montant (8).

4. The check valve of claim 1, wherein: the sealing sleeve (402) is made of rubber.

5. The check valve of claim 1, wherein: the sealing sleeve (402) is arranged opposite to the water through hole (403).