CN210423735U

CN210423735U - Two-way valve for central air conditioner

Info

Publication number: CN210423735U
Application number: CN201921599478.5U
Authority: CN
Inventors: 熊军红
Original assignee: Aijiedun Valve Co ltd
Current assignee: Aijiedun Valve Co ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-04-28
Anticipated expiration: 2029-09-25

Abstract

The utility model provides a two-way valve for central air conditioning belongs to valve manufacturing technical field. It has solved the slow scheduling problem that resets of current central air conditioning two-way valve. This two-way valve for central air conditioning includes the valve body, the valve rod, valve gap and case, valve gap threaded connection is at the valve body top, the valve body has the end of intaking and is equipped with the intercommunication in play water end and the valve body and intake the disk seat of end and play water end, the case is located the valve body and is located the disk seat top, the inner of valve rod links firmly mutually with the case, the valve gap setting is stretched out to the outer end of valve rod, the outer end of valve rod has linked firmly and has blocked the piece, the valve rod cover is equipped with the spring that provides elasticity and make the valve rod keep to valve gap top displacement trend, the one end of spring is contradicted in the valve gap, the. The utility model discloses reset fast and can prolong the plastics claw clamp life that electric actuator has.

Description

Two-way valve for central air conditioner

Technical Field

The utility model belongs to the technical field of the valve is made, a valve for central air conditioning is related to, in particular to two-way valve for central air conditioning.

Background

The electric two-way valve is one of various pipeline valves, is suitable for the temperature control of the end system of a central air conditioner, such as an air conditioning box, a fresh air unit, an air processor and the like, and mainly comprises an electric actuator and a two-way valve, wherein the electric actuator is generally driven by a synchronous motor and has the functions of spring resetting and manual valve opening lever operation, and the two-way valve is generally composed of a valve body, a valve rod and a valve seat.

For example, chinese patent literature discloses an electric two-way valve [ application number: 201520484949.3, respectively; authorization notice number: CN204784743U ], which comprises a valve body, a valve cover hermetically mounted on the top surface of the valve body, an inlet end and an outlet end which are respectively arranged at two ends of the valve body and are communicated with each other, a valve seat and a valve clack arranged between the inlet end and the outlet end, and a valve rod and an electric actuator for driving the valve clack to lift and start the valve seat, wherein the cross section of the valve clack is U-shaped with an upward opening, a sleeve and a guide sleeve which are sleeved are arranged outside the U-shaped valve clack, the guide sleeve and the sleeve are positioned and mounted according to the upper position and the lower position, a movable sealing assembly is arranged between the valve clack and the guide sleeve, an upper cavity is formed between the valve clack, the guide sleeve and the valve cover, the outer edge of the bottom of the valve cla.

The electric two-way valve realizes pressure balance between the inlet end and the upper cavity through the bottom limbers, reduces the opening and closing torque of the valve, avoids cavitation erosion of the side limbers, but is not quick enough in resetting, and at present, in order to reduce cost, an electric actuator is clamped through plastic claws, the claws are divided into three parts to be used for clamping the top end of the valve rod to drive the valve rod to lift, and the plastic claws are easily expanded to be damaged.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide one kind and reset fast and can prolong the plastic claw clamp life's that electric actuator has two-way valve for central air conditioning.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a two-way valve for central air conditioning, includes valve body, valve rod, valve gap and case, valve gap threaded connection in valve body top, the valve body have the end of intaking and go out the water end and be equipped with the disk seat that feeds through the end of intaking and go out the water end in the valve body, the case be located the valve body and lie in the disk seat top, the inner of valve rod link firmly with the case mutually, the valve gap setting is stretched out to the outer end of valve rod, its characterized in that, the outer end of valve rod link firmly and block the piece, the valve rod cover be equipped with and provide elasticity and make the valve rod keep to the spring of valve gap top displacement trend, the one end of spring contradict in the valve gap, the other end of spring contradicts in blocking the piece, the valve.

In the two-way valve for the central air conditioner, the bottom surface of the retaining ring is provided with a plurality of connecting columns which are uniformly distributed in the circumferential direction and are connected with the retaining ring into a whole, the middle part of the bottom surface of each connecting column is provided with a split extending in the axial direction, and the top of the valve cover is provided with connecting holes for the connecting columns to be inserted into one to one. The split facilitates deformation of the connecting column to facilitate insertion into the connecting hole, and provides elastic force to enable the connecting column to be firmly connected with the connecting hole, so that connection between the retaining ring and the valve cover is facilitated.

In the two-way valve for the central air conditioner, a guide structure which plays an axial guide role for the valve rod is arranged between the valve cover and the valve core. The guide structure enables the axial displacement of the valve rod to be stable, and the working stability is guaranteed.

In the two-way valve for the central air conditioner, the guide structure comprises a guide cylinder sleeved outside the valve rod, a guide hole for inserting the guide cylinder is formed in the bottom of the valve cover, the bottom end of the guide cylinder props against the top end of the valve core, and a compression assembly for compressing the top end of the guide cylinder is arranged on the valve rod. The guide cylinder is matched with the guide hole, so that the guide performance is good, and the axial displacement stability of the valve rod is good.

In the two-way valve for the central air conditioner, a circle of convex ring protruding radially is arranged at the position, close to the top end, of the guide cylinder, and the outer wall of the convex ring is in contact with the inner wall of the guide hole. Therefore, the weight of the guide cylinder can be reduced, the purpose of saving materials is achieved, and the manufacturing cost is reduced.

In the two-way valve for the central air conditioner, the compressing assembly comprises a sealing ring sleeved on the valve rod and compressed on the top end of the guide cylinder, and a clamping ring for compressing the sealing ring is embedded on the valve rod. The sealing ring ensures the sealing property between the valve rod and the guide cylinder, and the sealing ring and the retainer ring are axially displaced along with the valve rod and tightly press the guide cylinder, so that the guide precision is prevented from being influenced by the axial movement of the guide cylinder.

In the two-way valve for the central air conditioner, the inner wall of the valve core is provided with a convex shoulder and an annular groove, the outer wall of the bottom end of the valve rod is provided with a groove for clamping the convex shoulder and an annular bulge embedded in the annular groove, the valve core is provided with a plugging ring which is radially protruded and used for plugging the valve seat, and the top end of the valve seat is embedded with a sealing gasket.

In the two-way valve for the central air conditioner, the valve cover is in threaded connection with a dustproof cover covering the valve rod, and the top end bottom wall of the dustproof cover is used for pushing and contacting the top end of the valve rod.

In the above two-way valve for a central air conditioner, the blocking member is a blocking ring protruding radially from the top end of the valve rod or a blocking ring embedded in the top end of the valve rod.

Compared with the prior art, this two-way valve for central air conditioning low in manufacturing cost, its and electric actuator equipment back, the retaining ring avoids electric actuator's plastics claw to press from both sides the atress and expands outward, avoids plastics claw to press from both sides the damage, and the spring makes the case reset fast moreover, reduces and interferes, and flow control precision is high, and the guidance quality to the valve rod is good, and job stabilization nature is good, and manual regulation is convenient.

Drawings

Fig. 1 is an exploded view of the two-way valve for a central air conditioner.

Fig. 2 is an exploded view of the two-way valve for air conditioner, which is composed of a valve rod, a valve cover and a valve core.

Fig. 3 is a partial sectional view of the two-way valve for a central air conditioner.

In the figure, 1, a valve body; 11. a water inlet end; 12. a water outlet end; 13. a valve seat; 14. a gasket; 2. a valve stem; 21. an annular projection; 3. a valve cover; 31. connecting holes; 32. a guide hole; 4. a valve core; 41. a shoulder is formed; 42. a plugging ring; 5. a blocking member; 6. a spring; 7. a retaining ring; 71. connecting columns; 72. a breach; 8. a guide cylinder; 81. a convex ring; 9. a seal ring; 10. a collar; 15. a dust cover.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2 and 3, the two-way valve for central air conditioner includes a valve body 1, valve rod 2, valve gap 3 and

case

4, 3 threaded connection of valve gap in 1 top of valve body, valve body 1 has into water end 11 and play water end 12 and is equipped with the disk seat 13 that feeds through water end 11 and play water end 12 in the valve body 1, case 4 is located valve body 1 and is located disk seat 13 top, the inner and the case 4 of valve rod 2 link firmly mutually, valve gap 3 sets up is stretched out to the outer end of valve rod 2, the outer end of valve rod 2 has linked firmly and has blockked the

piece

5, 2 covers of valve rod are equipped with the spring 6 that provides elasticity and make valve rod 2 keep to the displacement trend of valve gap 3 top, the one end of spring 6 is contradicted in valve gap 3, the other end of spring 6 is contradicted in blockking piece 5, valve gap 3 is last to link firmly and is annular retaining ring 7, block piece 5 for inlaying the retaining ring of locating 2 tops of.

When the two-way valve for the central air conditioner is used, the plastic claw clamp of the electric actuator penetrates through the retaining ring 7 and clamps the top end of the valve rod 2, the retaining ring 7 prevents the plastic claw clamp from being stressed and expanded outwards, the plastic claw clamp is prevented from being damaged, and the working stability is ensured; the elasticity that spring 6 provided makes valve rod 2 keep the trend of displacement to valve gap 3 top, make valve rod 2 drive case 4 and make case 4 keep keeping away from the trend of disk seat 13, this two-way valve for central air conditioning keeps normally open state like this, when needing to adjust, electric actuator work is pressed down through the elasticity that plastics claw smugglied with valve rod 2 and overcome elasticity, valve rod 2 drives case 4 and is close to or shutoff in disk seat 13, reduce the flow or block the flow, the elasticity that spring 6 provided after the regulation makes valve rod 2, case 4 reset fast, reduce and interfere, flow control precision is high.

In further detail, the bottom surface of the retaining ring 7 is provided with a plurality of connecting columns 71 which are circumferentially and uniformly distributed and are connected with the retaining ring 7 into a whole, the middle part of the bottom surface of each connecting column 71 is provided with a split 72 which axially extends, the top of the valve cover 3 is provided with connecting holes 31 into which the connecting columns 71 are inserted in a one-to-one correspondence manner, and the number of the connecting columns 71 and the number of the connecting holes 31 are two in the embodiment. The slits 72 facilitate the deformation of the coupling post 71 to facilitate the insertion into the coupling hole 31, while providing an elastic force to firmly couple the coupling post 71 with the coupling hole 31, which facilitates the coupling of the retainer ring 7 with the cap 3.

In order to make 2 axial displacement of valve rod steady, be equipped with the guide structure who plays the axial direction effect to valve rod 2 between valve gap 3 and the case 4, guide structure is including the guide cylinder 8 of cover in the valve rod 2 outside, valve gap 3 bottom is equipped with and supplies guide cylinder 8 male guiding hole 32, the bottom of guide cylinder 8 is contradicted in the top of case 4, be equipped with the subassembly that compresses tightly with 8 tops of guide cylinder on the valve rod 2, guide cylinder 8 is close to top department and has the radial convex bulge loop 81 of round, the outer wall contact of bulge loop 81 sets up in guiding hole 32 inner wall, compress tightly the subassembly including the cover on valve rod 2 and compress tightly in the sealing washer 9 on 8 tops of guide cylinder, inlay the rand 10 that is equipped with to compress tightly sealing washer 9 on the valve rod.

The inner wall of the valve core 4 is provided with a convex shoulder 41 and an annular groove, the outer wall of the bottom end of the valve rod 2 is provided with a groove for clamping the convex shoulder 41 and an annular bulge 21 embedded in the annular groove, the valve core 4 is provided with a blocking ring 42 which is radially protruded and used for blocking the valve seat 13, and the top end of the valve seat 13 is embedded with a sealing gasket 14. After case 4 and valve rod 2 press fit like this, case 4 and valve rod 2 firm in connection, case 4 can not receive the impact of rivers and not hard up, and job stabilization nature is good, and shutoff ring 42 makes 4 external diameters of case need not too big moreover, has practiced thrift the material, the cost is reduced, and when shutoff ring 42 sealed in disk seat 13 top, sealed 14 has guaranteed the leakproofness between disk seat 13 and the sealing ring.

The valve cover 3 is in threaded connection with a dustproof cover 15 covering the valve rod 2, and the top end bottom wall of the dustproof cover 15 is used for abutting against the top end of the valve rod 2. Dust cover 15 not only plays dustproof water proof effect, and the elasticity of spring 6 makes 2 tops of valve rod contradict in 15 top diapire of dust cover all the time moreover, rotates dust cover 15 like this and can adjust valve rod 2 and go up and down, and valve rod 2 drives case 4 and goes up and down with regulation flow size, and manual regulation is convenient.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A two-way valve for a central air conditioner comprises a valve body (1), a valve rod (2), a valve cover (3) and a valve core (4), wherein the valve cover (3) is connected to the top of the valve body (1) in a threaded manner, the valve body (1) is provided with a water inlet end (11) and a water outlet end (12), a valve seat (13) communicated with the water inlet end (11) and the water outlet end (12) is arranged in the valve body (1), the valve core (4) is positioned in the valve body (1) and above the valve seat (13), the inner end of the valve rod (2) is fixedly connected with the valve core (4), the outer end of the valve rod (2) extends out of the valve cover (3) for arrangement, the two-way valve is characterized in that a blocking piece (5) is fixedly connected with the outer end of the valve rod (2), a spring (6) providing elastic force to enable the valve rod (2) to keep the trend of displacement above the valve cover (3) is, the other end of the spring (6) is abutted against the blocking piece (5), and the valve cover (3) is fixedly connected with an annular retaining ring (7).

2. The two-way valve for the central air conditioner as claimed in claim 1, wherein the bottom surface of the retaining ring (7) is provided with a plurality of connecting columns (71) which are circumferentially and uniformly distributed and are integrally connected with the retaining ring (7), a split (72) which axially extends is formed in the middle of the bottom surface of each connecting column (71), and the top of the valve cover (3) is provided with connecting holes (31) into which the connecting columns (71) are correspondingly inserted one by one.

3. The two-way valve for the central air conditioner as claimed in claim 1 or 2, wherein a guide structure for axially guiding the valve rod (2) is arranged between the valve cover (3) and the valve core (4).

4. The two-way valve for the central air conditioner according to claim 3, wherein the guide structure comprises a guide cylinder (8) sleeved outside the valve rod (2), a guide hole (32) for inserting the guide cylinder (8) is formed in the bottom of the valve cover (3), the bottom end of the guide cylinder (8) abuts against the top end of the valve core (4), and a pressing component for pressing the top end of the guide cylinder (8) is arranged on the valve rod (2).

5. The two-way valve for central air conditioners as claimed in claim 4, wherein the guide cylinder (8) has a ring of radially projecting collars (81) near the top end, the outer walls of the collars (81) being disposed in contact with the inner walls of the guide holes (32).

6. The two-way valve for the central air conditioner according to claim 5, wherein the compressing assembly comprises a sealing ring (9) sleeved on the valve rod (2) and compressed on the top end of the guide cylinder (8), and a clamping ring (10) for compressing the sealing ring (9) is embedded on the valve rod (2).

7. The two-way valve for the central air conditioner as claimed in claim 6, wherein the inner wall of the valve core (4) is provided with a shoulder (41) and an annular groove, the outer wall of the bottom end of the valve rod (2) is provided with a groove for clamping the shoulder (41) and an annular protrusion (21) embedded in the annular groove, the valve core (4) is provided with a blocking ring (42) which protrudes radially and is used for blocking the valve seat (13), and the top end of the valve seat (13) is embedded with a sealing gasket (14).

8. The two-way valve for the central air conditioner as recited in claim 7, wherein the bonnet (3) is threadedly connected with a dust cover (15) covering the valve rod (2), and a top end bottom wall of the dust cover (15) is used for abutting against the top end of the valve rod (2).

9. The two-way valve for central air conditioners according to claim 8, wherein the blocking member (5) is a blocking ring protruding radially from the top end of the valve stem (2) or the blocking member (5) is a blocking ring embedded in the top end of the valve stem (2).