CN220452791U - Vertical check valve of air conditioner - Google Patents

Abstract

The utility model provides a vertical check valve of an air conditioner, and belongs to the field of air conditioner accessories. It has solved the not good enough problem of current protection against insects valve stability. The vertical check valve of the air conditioner comprises a valve body, wherein the upper end and the lower end of the valve body are respectively a water inlet end and a water outlet end, the water inlet end and the water outlet end are communicated through a water passing cavity formed in the middle of the valve body, a one-way structure which enables the water inlet end and the water passing cavity to be communicated in one way is arranged in the upper end of the water passing cavity, an isolation part is fixed in the lower end of the water passing cavity, a strip-shaped tortuous flow passage is formed in the isolation part, and the water passing cavity is communicated with the water outlet end through the tortuous flow passage. The vertical check valve of the air conditioner works stably.

Description

Vertical check valve of air conditioner

Technical Field

The utility model belongs to the field of air conditioner accessories, and relates to an air conditioner check valve, in particular to an air conditioner vertical check valve.

Background

The air conditioner water outlet in the market at present is straight-through, in high airtight house, because the atmospheric pressure difference between indoor and outdoor, outdoor air is followed the drain pipe and is flowed back to indoor, just produced the noise at the portion that the drainage is backlogged, simultaneously, the straight-through water outlet insect climbs into easily, also the pipeline stink that just usual upwards flees.

For the problems, people have realized that the problems are insufficient and improved, and an indoor air conditioner silencing/insect preventing valve (application number 201410440482.2) disclosed in China patent library is formed by connecting an upper half section and a lower half section, wherein the upper half section is connected with a rotatable automatic valve, a tongue piece is arranged on the lower half section, buckles are arranged on two sides of the upper half section, and clamping grooves matched with the buckles are formed on two sides of the lower half section; the automatic valve comprises a balance weight end, a valve cover end and a connecting point in the middle; the upper half section connecting end is provided with a spring buckle for pipeline connection.

The above-mentioned patent utilizes built-in automatic valve to realize upper and lower half one-way switch on, reaches deodorant, protection against insects, noise control sound three proofings effect, but this patent has two problems: 1. the connection point of the automatic valve and the upper half section are sealed hard, so that the lower port of the upper half section cannot be sealed completely easily; 2. because the air conditioner is used for a long time, dust and dirt in the air can be sucked into the air conditioner along with the air flow, and part of the dust and dirt can enter the insect prevention valve along with the fluid, the probability of blocking the automatic valve exists, and the normal use of the insect prevention valve is affected.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides an air conditioner vertical check valve, which solves the technical problem of improving the working stability.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a vertical check valve of air conditioner, includes that upper and lower extreme is the valve body of inlet end and play water end respectively, and inlet end and play water end are through the shaping in the middle part of the valve body cross water chamber intercommunication, are equipped with the one-way structure that makes inlet end and water chamber one-way switch on in crossing the water chamber upper end, its characterized in that, cross water chamber lower extreme internal fixation and have isolation component, isolation component internal shaping has the tortuous runner that is the bar, and cross water chamber through foretell tortuous runner intercommunication play water end.

The water passing cavity and the water outlet end are communicated through the zigzag flow passage formed in the isolation part, so that a similar trap effect is achieved, the design is matched with the unidirectional structure together to form a twice blocking barrier in the axial direction of the valve body, thus the deodorization, noise prevention and insect prevention effects of the check valve can be effectively enhanced, the technical effect can be still achieved when the unidirectional structure fails, and the working stability is good.

In the vertical check valve for air conditioner, the zigzag flow passage is composed of at least two vertically arranged strip-shaped sections, the strip-shaped sections are arranged in parallel, the distribution direction is vertical to the axial direction of the valve body, the adjacent two strip-shaped sections are communicated end to end, and the upper ends of the strip-shaped sections at the head part and the lower ends of the strip-shaped sections at the tail part are respectively connected with the water cavity and the water outlet end. By adopting the design, on the premise that the zigzag flow passage realizes deodorization, noise prevention and insect prevention effects, a larger water passing channel can be formed, so that the water draining process is smoother, and the working stability of the check valve is further improved.

In the vertical check valve of the air conditioner, the strip sections have 3 strips; the isolation component comprises a barrel and a baffle, wherein the barrel and the baffle are fixedly connected with the valve body, the baffle is arranged above the barrel, the barrel and the valve body are coaxially arranged, sealing is formed between the outer side wall of the barrel and the inner side wall of the water passing cavity, the barrel is internally provided with an isolation wall in an integrated manner, the vertical sections of the isolation wall and the baffle are approximately L-shaped, two ends of the isolation wall are respectively extended to the inner side wall of the barrel, sealing is formed between the upper side wall of the baffle and the inner side wall of the barrel, and the lower section of the baffle is clamped into the barrel and is extended into the isolation wall to form the tortuous flow passage. The isolation part consists of a cylinder body and a baffle plate, and has the advantages of simple structure and convenient assembly.

In the vertical check valve of the air conditioner, the top surface and the bottom surface of the cylinder body are respectively pressed on the upper section of the baffle plate and the inner wall of the water passing cavity, so that the installation is limited, the cylinder body and the baffle plate are installed in place at one time, and the assembly is further convenient.

In the vertical check valve of the air conditioner, the upper section of the baffle is obliquely downwards arranged to play a role in guiding flow, so that fluid in the water passing cavity is smoothly discharged into a tortuous flow passage, and the working stability of the check valve is further enhanced.

In the vertical check valve of the air conditioner, the upper section of the baffle and the cylinder are sealed and fixedly connected with the valve body in a welding mode, so that the vertical check valve is beneficial to assembly and can further simplify the structure.

In the air conditioner vertical check valve, the water guide part is vertically formed in the water passing cavity, and the water inlet end is connected with the water passing cavity through the water guide part; the one-way structure comprises a valve plate which is arranged between the water guide part and the isolation part and is hinged with the valve body, a balancing weight which enables the valve plate to swing upwards is fixed at one end of the valve plate, the bottom surface of the water guide part is obliquely arranged, and a rubber pad which can be in contact with the bottom surface of the water guide part and is sealed when the valve plate swings upwards is fixed at the upper side of the other end of the valve plate. The arrangement of the rubber pad enables the valve plate and the water guide part to form elastic soft seal, effectively strengthens the effect of sealing the lower port of the water guide part, and further improves the working stability of the check valve.

In the vertical check valve of the air conditioner, the upper side face of the end part of the valve plate for installing the rubber pad comprises a supporting plane and an annular yielding plane, the middle part of the bottom surface of the rubber pad is attached to the supporting plane, the yielding plane and the edge of the bottom surface of the rubber pad are opposite to each other, a small gap exists between the yielding plane and the edge of the bottom surface of the rubber pad, and the rubber pad is contacted with the water guide part by utilizing the edge of the rubber pad. There is less clearance between the border that rubber pad and water guide part contacted and the valve plate to utilize this clearance to make the rubber pad produce elastic deformation and water guide part more closely contact, further strengthen the effect of sealing water guide part lower port.

In the above air conditioner vertical check valve, the inner wall of the water inlet end is integrally formed with a positioning seat in a ring shape, the positioning seat and the water inlet end are coaxial, and the water guide part is formed on the positioning seat. By adopting the design, the design and the processing are convenient.

In the vertical check valve of the air conditioner, the annular water inlet part which is coaxial with the positioning seat is formed on the top wall of the positioning seat, the water inlet part is communicated with the water guide part, and the water inlet part and the water guide part are eccentrically arranged to form a bending channel, so that the odor can be further blocked from flowing upwards on the premise of ensuring smooth water discharge, and the odor-preventing effect is better.

In the vertical check valve of the air conditioner, the valve body comprises an upper pipe body and a lower pipe body which are coaxially arranged, and the lower end of the upper pipe body is detachably, hermetically and fixedly connected with the upper end of the lower pipe body; the water inlet end and the water outlet end are respectively arranged on the upper pipe body and the lower pipe body, the valve plate is hinged on the water guide part, and the valve plate can extend out through the upper port of the lower pipe body, so that the check valve is convenient to integrally assemble.

In the vertical check valve of the air conditioner, the rubber pad and the valve plate can be detachably and fixedly connected, so that the rubber pad can be replaced after the upper pipe body and the lower pipe body are separated and the valve plate is taken out, and the maintenance cost is effectively reduced.

In the vertical check valve of air conditioner, the through hole is axially penetrated in the middle of the rubber pad, the threaded hole is correspondingly formed in the supporting plane, the gasket is pressed on the end face of the rubber pad far away from the supporting plane, the rubber pad sequentially penetrates through the gasket and the through hole through the rod part and is fixedly connected with the valve plate through the screw screwed into the threaded hole, and therefore the rubber pad can be replaced through the rotating screw, and the operation is extremely convenient.

In the vertical check valve of the air conditioner, the valve plate is a plastic integrated piece and comprises a shaft part which is horizontally arranged, the shaft part and the water inlet end are vertical in axis, and the valve plate is hinged with the upper pipe body through the shaft part.

In the vertical check valve of the air conditioner, the valve plate comprises a plate-shaped main body, and the rubber pad and the balancing weight are respectively fixed at two ends of the main body; the upper side integrated into one piece in main part middle part has the block, and block length extends along the axial extension of shaft part, and the both ends of block all are formed with above-mentioned shaft part. The block not only provides the mounted position for the shaft part, but also forms the function similar to the reinforcing rib, improves the integral strength of the valve plate, namely, in the application, the block has the dual-purpose effect of one object, and the structure is simplified.

In the vertical check valve of the air conditioner, the clamping groove for clamping the balancing weight is formed in the upper side of the main body, so that the balancing weight is conveniently connected with the valve plate.

In the vertical check valve of the air conditioner, the upper pipe body and the lower pipe body are sealed by a sealing ring; the upper pipe body outer wall is formed with a circle of buckle, the lower pipe body outer wall is formed with an annular blocking edge matched with the buckle, and the buckle is buckled on the lower side of the annular blocking edge, so that the pipe has the advantages of stable structure and convenience in disassembly and assembly.

Compared with the prior art, the vertical check valve of the air conditioner has the following advantages:

1. the water passing cavity and the water outlet end are communicated through the zigzag flow passage formed in the isolation part, so that a similar trap effect is achieved, the design is matched with the unidirectional structure together to form a twice blocking barrier in the axial direction of the valve body, thus the deodorization, noise prevention and insect prevention effects of the check valve can be effectively enhanced, the technical effect can be still achieved when the unidirectional structure fails, and the working stability is good.

2. The arrangement of the rubber pad enables the valve plate and the water guide part to form elastic soft seal, effectively strengthens the effect of sealing the lower port of the water guide part, and further improves the working stability of the check valve.

3. There is less clearance between the border that rubber pad and water guide part contacted and the valve plate to utilize this clearance to make the rubber pad produce elastic deformation and water guide part more closely contact, further strengthen the effect of sealing water guide part lower port.

Drawings

Fig. 1 is a schematic perspective view of a vertical check valve of the air conditioner.

Fig. 2 is a schematic sectional view of the vertical check valve of the air conditioner.

Fig. 3 is a schematic diagram of the connection structure of the valve plate, the counterweight and the rubber pad.

Fig. 4 is a schematic perspective view of the spacer member.

In the figure, 1, a valve body; 1a, an upper pipe body; 1a1, a water inlet end; 1a2, a buckle; 1a3, a connecting piece; 1a4, a positioning seat; 1a5, a water inlet part; 1b, lower pipe body; 1b1, a water outlet end; 1b2, annular blocking edges; 1c, a water passing cavity; 1d, a water guide part; 2. an isolation member; 2a, a tortuous flow path; 2a1, a bar section; 2b, a cylinder; 2b1, partition walls; 2c, a baffle plate; 3. a valve plate; 3a, a main body; 3a1, a support plane; 3a2, a yielding plane; 3b, a shaft portion; 3c, a block; 4. balancing weight; 5. a rubber pad; 6. a seal ring; 7. a gasket; 8. and (5) a screw.

Description of the embodiments

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

Example 1

As shown in fig. 1 and 2, the vertical check valve for air conditioner comprises a valve body 1 having a substantially straight tubular shape, and both ends of the valve body 1 are in a reduced mouth shape. When in actual use, the valve body 1 is vertically arranged, the upper end and the lower end of the valve body 1 are respectively a water inlet end 1a1 and a water outlet end 1b1, and the water inlet end 1a1 and the water outlet end 1b1 are communicated through a water passing cavity 1c formed in the middle of the valve body 1.

Wherein,

the upper end of the water passing cavity 1c is internally provided with a unidirectional structure which enables the water inlet end 1a1 and the water passing cavity 1c to be in unidirectional conduction, the lower end of the water passing cavity 1c is internally fixed with an isolation part 2, a strip-shaped tortuous flow passage 2a is formed in the isolation part 2, and the water passing cavity 1c is communicated with the water outlet end 1b1 through the tortuous flow passage 2a. The water passing cavity 1c and the water outlet end 1b1 are communicated through the tortuous flow passage 2a formed in the isolation part 2, so that a similar trap effect is achieved, the design and the one-way structure are matched together to form two blocking barriers in the axial direction of the valve body 1, thus the deodorizing, noise-preventing and insect-preventing effects of the check valve can be effectively enhanced, the technical effect can be still achieved when the one-way structure fails, and the working stability is good.

In particular the number of the elements,

the two ends of the tortuous flow passage 2a are respectively provided with an inlet communicated with the water passing cavity 1c and an outlet communicated with the water outlet end 1b1, and the axes of the inlet and the outlet are vertically arranged. As shown in fig. 2, the tortuous flow passage 2a is composed of at least two vertically arranged strip-shaped sections 2a1, the plurality of strip-shaped sections 2a1 are arranged in parallel and are perpendicular to the axial direction of the valve body 1, the adjacent two strip-shaped sections 2a1 are communicated end to end, and the upper end of the strip-shaped section 2a1 at the head and the lower end of the strip-shaped section 2a1 at the tail are respectively connected with the water cavity 1c and the water outlet end 1b1. By adopting the design, the tortuous flow passage 2a can form a larger water passing passage on the premise of realizing deodorization, noise prevention and insect prevention effects, so that the water discharging process is smoother, and the working stability of the check valve is further improved. Naturally, other shapes of the meandering flow path 2a are also possible.

In an actual product, the strip-shaped section 2a1 has 3 strips; as shown in fig. 2 and 4, the partition member 2 includes a cylinder 2b and a baffle plate 2c each fixedly attached to the valve body 1, wherein the baffle plate 2c is disposed above the cylinder 2 b; the cylinder body 2b and the valve body 1 are coaxially arranged, and a seal is formed between the outer side wall of the cylinder body 2b and the inner side wall of the water passing cavity 1c; the cylinder 2b is integrally formed with a partition wall 2b1, the vertical sections of the partition wall 2b1 and the baffle plate 2c are approximately L-shaped, both ends of the partition wall 2b1 extend to the inner side wall of the cylinder 2b, a seal is formed between the upper side wall of the baffle plate 2c and the inner side wall of the cylinder 2b, and the lower section of the baffle plate 2c is clamped into the cylinder 2b and extends into the partition wall 2b1 to form the tortuous flow passage 2a. The isolation part 2 consists of a cylinder body 2b and a baffle plate 2c, and has the advantages of simple structure and convenient assembly.

Further, a strip-shaped clamping groove matched with the lower section of the baffle plate 2c is vertically formed in the inner side wall of the cylinder body 2b, and the upper end and the lower end of the strip-shaped clamping groove are respectively in an opening shape and a sealing shape; the two sides of the lower section of the baffle plate 2c are respectively clamped in the two strip-shaped clamping grooves, so that the structural stability of the tortuous flow passage 2a is effectively enhanced. The top surface and the bottom surface of the cylinder body 2b are respectively pressed on the upper section of the baffle plate 2c and the inner wall of the water passing cavity 1c, so that the installation limit is realized, the cylinder body 2b and the baffle plate 2c are installed in place at one time, and the assembly is further convenient; the upper section of the baffle plate 2c is obliquely downwards arranged to play a role in guiding, so that fluid in the water passing cavity 1c is smoothly discharged into the tortuous flow passage 2a, and the working stability of the check valve is further enhanced.

In actual products, the inside wall of the water passing cavity 1c is a circumferential surface, the outside surface of the upper section of the baffle plate 2c and the outside surface of the cylinder body 2b are circumferential surfaces matched with the inside wall of the water passing cavity 1c, and the upper section of the baffle plate 2c and the cylinder body 2b are fixedly connected with the valve body 1 in a sealing manner in a welding manner, so that the assembly is facilitated, and meanwhile, the structure can be further simplified.

The unidirectional structure is specifically as follows: as shown in fig. 2, a water guiding part 1d is vertically formed in the water passing cavity 1c, and a water inlet end 1a1 is communicated with the water passing cavity 1c through the water guiding part 1 d; the one-way structure comprises a valve plate 3 which is arranged between a water guide part 1d and an isolation part 2 and is hinged with a valve body 1, one end of the valve plate 3 is fixed with a balancing weight 4 which enables the valve plate 3 to swing upwards, the bottom surface of the water guide part 1d is obliquely arranged, and the upper side of the other end of the valve plate 3 is fixed with a rubber pad 5 which can be in contact seal with the bottom surface of the water guide part 1d when the valve plate 3 swings upwards. The arrangement of the rubber pad 5 enables the valve plate 3 and the water guide part 1d to form elastic soft seal, effectively enhances the effect of sealing the lower port of the water guide part 1d, and further improves the working stability of the check valve.

Further, the upper side surface of the end portion of the valve plate 3 for installing the rubber pad 5 includes a supporting plane 3a1 and an annular yielding plane 3a2, wherein the middle portion of the bottom surface of the rubber pad 5 is attached to the supporting plane 3a1, the yielding plane 3a2 and the bottom surface edge of the rubber pad 5 are opposite to each other, a small gap exists between the two, and the rubber pad 5 contacts with the water guiding portion 1d by using the edge of the rubber pad 5. A small gap exists between the edge of the rubber pad 5, which is contacted with the water guide part 1d, and the valve plate 3, and the rubber pad 5 is elastically deformed to be in closer contact with the water guide part 1d by utilizing the gap, so that the effect of closing the lower port of the water guide part 1d is further enhanced. Preferably, the axial dimension of the gap is 2mm to 3mm.

The valve body 1 is of a split structure, and the structure is as follows: the water inlet end 1a1 and the water outlet end 1b1 are respectively arranged on the upper pipe body 1a and the lower pipe body 1 b; the valve plate 3 is hinged on the water guide part 1d, and the valve plate 3 can extend out through the upper port of the lower pipe body 1b, so that the check valve is convenient to integrally assemble.

The upper tube body 1a and the lower tube body 1b are connected as follows: the outer wall of the upper pipe body 1a is integrally formed with a circle of buckles 1a2 uniformly distributed along the circumferential direction of the upper pipe body 1a, the outer side wall of the lower pipe body 1b is integrally formed with an annular blocking edge 1b2 matched with the buckles 1a2, and the buckles 1a2 are buckled on the lower side of the annular blocking edge 1b2, so that the pipe has the advantages of being stable in structure and convenient to assemble and disassemble.

The sealing mode of the upper pipe body 1a and the lower pipe body 1b is as follows: the upper pipe body 1a and the lower pipe body 1b form a seal through a sealing ring 6, specifically, an annular groove coaxial with the upper pipe body 1a is formed in the bottom wall of the upper pipe body 1a, the sealing ring 6 is arranged in the annular groove, and two end faces of the sealing ring 6 are respectively pressed on the bottom wall of the annular groove and the top face of the lower pipe body 1 b.

Naturally, the upper pipe body 1a and the lower pipe body 1b are in threaded connection, and the upper pipe body 1a and the lower pipe body 1b can be detachably, hermetically and fixedly connected by winding a raw material belt at the connection position.

The rubber pad 5 is installed as follows: as shown in fig. 2 and 3, the rubber pad 5 is detachably and fixedly connected with the valve plate 3, so that after the upper pipe body 1a and the lower pipe body 1b are separated and the valve plate 3 is taken out, the rubber pad 5 can be replaced, and the maintenance cost is effectively reduced. Specifically, the middle part of the rubber pad 5 axially penetrates through the through hole, a threaded hole is correspondingly formed in the supporting plane 3a1, the end face, far away from the supporting plane 3a1, of the rubber pad 5 is pressed with the gasket 7, the rubber pad 5 sequentially penetrates through the gasket 7 and the through hole through the rod part and is fixedly connected with the valve plate 3 through a screw 8 screwed into the threaded hole, and therefore the rubber pad 5 can be replaced through rotating the screw 8, and the operation is extremely convenient.

Naturally, it is also possible that the rubber pad 5 is directly fastened to the valve plate 3 by means of bonding.

The valve plate 3 has the following structure: the valve plate 3 is a plastic integrated piece, the valve plate 3 comprises a shaft part 3b which is horizontally arranged, the axes of the shaft part 3b and the water inlet end 1a1 are vertical, and the valve plate 3 is hinged with the upper pipe body 1a through the shaft part 3b. The valve plate 3 comprises a plate-shaped main body 3a, and a rubber pad 5 and a balancing weight 4 are respectively fixed at two ends of the main body 3 a; the upper side of the middle part of the main body 3a is integrally formed with a block 3c, the length of the block 3c extends along the axial direction of the shaft part 3b, and the shaft part 3b is formed at both ends of the block 3 c. The block 3c not only provides the installation position for the shaft part 3b, but also forms the function similar to a reinforcing rib, and improves the overall strength of the valve plate 3, namely, in the application, the block 3c has a dual-purpose effect of one object, and the structure is simplified.

The shaft portion 3b and the upper tube body 1a are connected as follows: a shaft portion 3b is a circular shaft; a connecting sheet 1a3 is vertically formed on the bottom wall of the upper pipe body 1a, and two connecting sheets 1a3 are arranged opposite to the two shaft parts 3b respectively; the two connecting pieces 1a3 are respectively provided with a round hole with one side open and matched with the shaft part 3b, and the shaft part 3b is clamped in the corresponding round hole.

The counterweight 4 is installed as follows: the clamping groove for clamping the balancing weight 4 is formed in the upper side of the main body 3a, and the balancing weight 4 is convenient to connect with the valve plate 3. Preferably, the balancing weight 4 is circular, and the axial cross section of the clamping groove is circular arc-shaped matched with the balancing weight 4.

As shown in fig. 2, a positioning seat 1a4 is integrally formed on the inner wall of the water inlet end 1a1, the positioning seat 1a4 and the water inlet end 1a1 are coaxial, and a water guiding portion 1d is formed on the positioning seat 1a 4. The top wall of the positioning seat 1a4 is provided with a water inlet part 1a5 which is annular and coaxial with the positioning seat 1a4, the water inlet part 1a5 is communicated with a water guide part 1d, and the water inlet part 1a5 and the water guide part 1d are eccentrically arranged to form a bending channel, so that on the premise of ensuring smooth water drainage, odor can be further prevented from flowing upwards, and the deodorizing effect is better.

Example two

The structure and principle of the second embodiment are basically the same as those of the first embodiment, except that: the valve plate 3 is provided with a threaded column, the threaded column penetrates through the through hole and the gasket 7 and is in threaded connection with a nut, the nut is pressed on the gasket 7, and the rubber pad 5 and the valve plate 3 can be detachably and fixedly connected.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (10)

1. The utility model provides a vertical check valve of air conditioner, including upper and lower extreme is valve body (1) of water inlet end (1 a 1) and play water end (1 b 1) respectively, water inlet end (1 a 1) and play water end (1 b 1) communicate through shaping in water cavity (1 c) in valve body (1) middle part, be equipped with the one-way structure that makes water inlet end (1 a 1) and water cavity (1 c) one-way switch on in water cavity (1 c) upper end, a serial communication port, water cavity (1 c) lower extreme internal fixation has isolation component (2), the shaping has tortuous runner (2 a) that are the bar in isolation component (2), and water cavity (1 c) communicate play water end (1 b 1) through foretell tortuous runner (2 a).

2. The vertical check valve for air conditioner according to claim 1, wherein the tortuous flow passage (2 a) is composed of at least two vertically arranged strip-shaped sections (2 a 1), the plurality of strip-shaped sections (2 a 1) are arranged in parallel and are perpendicular to the axial direction of the valve body (1), the adjacent two strip-shaped sections (2 a 1) are communicated end to end, and the upper end of the strip-shaped section (2 a 1) at the head and the lower end of the strip-shaped section (2 a 1) at the tail are respectively connected with the water cavity (1 c) and the water outlet end (1 b 1).

3. The upright check valve for air conditioner according to claim 2, characterized in that the strip section (2 a 1) has 3 strips; the isolation part (2) comprises a barrel (2 b) and a baffle (2 c) which are fixedly connected with the valve body (1), the baffle (2 c) is arranged above the barrel (2 b), the barrel (2 b) and the valve body (1) are coaxially arranged, a seal is formed between the outer side wall of the barrel (2 b) and the inner side wall of the water passing cavity (1 c), the isolation wall (2 b 1) is integrally formed in the barrel (2 b), the vertical sections of the isolation wall (2 b 1) and the baffle (2 c) are approximately L-shaped, two ends of the isolation wall (2 b 1) are respectively extended to the inner side wall of the barrel (2 b), a seal is formed between the upper side wall of the baffle (2 c) and the inner side wall of the barrel (2 b), and the lower section of the baffle (2 c) is clamped into the barrel (2 b) and is extended into the isolation wall (2 b 1) to form the tortuous flow passage (2 a).

4. A vertical check valve for an air conditioner according to claim 3, wherein the upper section of the baffle plate (2 c) is provided obliquely downward.

5. The vertical check valve of an air conditioner according to claim 1, wherein a water guide part (1 d) is vertically formed in the water passing cavity (1 c), and the water inlet end (1 a 1) is communicated with the water passing cavity (1 c) through the water guide part (1 d); the one-way structure comprises a valve plate (3) which is arranged between a water guide part (1 d) and an isolation part (2) and is hinged with a valve body (1), a balancing weight (4) which enables the valve plate (3) to swing upwards is fixed at one end of the valve plate (3), the bottom surface of the water guide part (1 d) is obliquely arranged, and a rubber pad (5) which can be in contact with the bottom surface of the water guide part (1 d) when the valve plate (3) swings upwards is fixed at the upper side of the other end of the valve plate (3).

6. The vertical check valve for air conditioner according to claim 5, wherein the upper side surface of the end portion of the valve plate (3) for mounting the rubber pad (5) comprises a supporting plane (3 a 1) and an annular giving-up plane (3 a 2), the middle part of the bottom surface of the rubber pad (5) is attached to the supporting plane (3 a 1), the giving-up plane (3 a 2) and the edge of the bottom surface of the rubber pad (5) are opposite to each other with a small gap therebetween, and the rubber pad (5) is contacted with the water guiding part (1 d) by the edge thereof.

7. The vertical check valve for air conditioner according to claim 5 or 6, wherein the positioning seat (1 a 4) is integrally formed on the inner wall of the water inlet end (1 a 1), the positioning seat (1 a 4) and the water inlet end (1 a 1) are coaxial, and the water guiding portion (1 d) is formed on the positioning seat (1 a 4).

8. The vertical check valve for an air conditioner according to claim 7, wherein a water inlet portion (1 a 5) which is annular and coaxial with the positioning seat (1 a 4) is formed on a top wall of the positioning seat (1 a 4), the water inlet portion (1 a 5) and the water guide portion (1 d) are communicated, and the water inlet portion (1 a 5) and the water guide portion (1 d) are eccentrically disposed.

9. The vertical check valve for an air conditioner according to claim 5, wherein the valve body (1) comprises an upper pipe body (1 a) and a lower pipe body (1 b) which are coaxially arranged, and the lower end of the upper pipe body (1 a) is detachably sealed and fixedly connected with the upper end of the lower pipe body (1 b); the water inlet end (1 a 1) and the water outlet end (1 b 1) are respectively arranged on the upper pipe body (1 a) and the lower pipe body (1 b), the valve plate (3) is hinged on the water guide part (1 d), and the valve plate (3) can extend out through the upper port of the lower pipe body (1 b).

10. The vertical check valve for air conditioner according to claim 9, wherein the rubber pad (5) is detachably and fixedly connected with the valve plate (3).