CN212564562U

CN212564562U - Valve seat and piston type check valve

Info

Publication number: CN212564562U
Application number: CN202021991090.2U
Authority: CN
Inventors: 王伟东; 吕锋; 唐相海; 戴王杰
Original assignee: XINCHANG FENGYI ELECTRIC APPLIANCE CO Ltd
Current assignee: XINCHANG FENGYI ELECTRIC APPLIANCE CO Ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-02-19
Anticipated expiration: 2030-09-11

Abstract

The utility model relates to a valve class technical field specifically discloses a disk seat and piston check valve. Wherein, disk seat formula structure as an organic whole, the disk seat includes direction section, base member section, taper changeover portion and linkage segment in proper order, the inside connection chamber that is provided with of linkage segment, the inside transition chamber that is provided with of taper changeover portion, connect through the connecting hole intercommunication between chamber and the transition chamber, the chamber end in connection chamber is provided with the location step, be provided with at least one overflow hole that runs through base member section and communicate with the transition chamber on the base member section. The valve seat is applied to the piston type check valve, so that the parts forming the piston type check valve are fewer, the valve seat is installed and compared with three parts, namely the guide pillar, the check ring and the joint, in the assembling process, the structural strength is higher, the stability is better, the coaxiality of the valve body and the piston is higher, the assembling process is more simplified, the assembling process is simpler, the auxiliary positioning is not needed, and the assembling precision is obviously improved.

Description

Valve seat and piston type check valve

Technical Field

The utility model relates to a valve class technical field, concretely relates to disk seat and piston check valve.

Background

A known piston type check valve is structurally shown in figure 1 and comprises a valve body 2, wherein an inlet connecting pipe 1 is welded at one end of the valve body 2, a connector 9 is welded at the other end of the valve body, and an outlet connecting pipe 10 is welded at the outlet end of the connector 9. A piston 5 is arranged in the valve body, a sealing ring 4 is arranged on the end face, facing the inlet end, of the piston 5, the sealing ring is used for being abutted against the sealing end in the valve body 2, and a gasket 3 is arranged on one side, close to the inlet end, of the sealing ring. The valve body 2 is also internally provided with a guide post 7 which is axially matched with the piston 5. One end of the guide post 7 far away from the piston is fixedly connected with a check ring 8, an overflowing hole is formed in the check ring 8, and the check ring 8 is pressed and fixed in the valve body through a connector 9. Wherein a spring 6 is arranged between the piston and the retainer ring.

Fluid enters from one end of the inlet, when the pressure of the fluid is larger than the elastic force of the spring, the spring is compressed, the piston moves towards one end of the outlet, the sealing ring is separated from the sealing ring, and the fluid enters the valve body and flows out from the outlet connecting pipe through the overflowing hole. When the pressure of the fluid is smaller than the elastic force of the spring, the sealing ring is abutted against the sealing ring and is in a sealing state.

In the structure, although the overall structure principle is simple, the number of parts is too much, especially guide columns, check rings and joints are used as three independent parts and need to be processed respectively, and when the parts are assembled, the assembling procedures are more, and meanwhile, in the assembling process, too many small parts are accurately positioned to be higher in difficulty, so that the assembling cost is increased, and the assembling efficiency is reduced. In addition, in particular, excessive assembly processes and connection relations lead to error accumulation, and technical defects of low assembly precision and low coaxiality are caused.

Disclosure of Invention

The to-be-solved technical problem of the utility model is, the part quantity of solving piston check valve among the prior art too much leads to assembly precision and the lower technical defect of assembly efficiency.

In order to solve the technical problem, the utility model provides a technical scheme as follows: the utility model provides a valve seat, valve seat formula structure as an organic whole, the valve seat includes guide section, base member section, taper changeover portion and linkage segment in proper order, the inside connection chamber that is provided with of linkage segment, the inside transition chamber that is provided with of taper changeover portion, connect through the connecting hole intercommunication between chamber and the transition chamber, be provided with the location step at the bottom of the chamber in connection chamber, be provided with at least one cross the discharge orifice that runs through base member section and communicate with the transition chamber on the base member section.

In a preferred embodiment, the overflowing hole is a plurality of overflowing holes, and the overflowing holes are uniformly distributed in the circumferential direction.

The utility model provides a piston check valve, includes the valve body at least, the one end fixedly connected with import of valve body is taken over, install the piston in the valve body, one side that the piston is close to the import and is taken over is provided with the sealing member, the one end that the import was taken over is kept away from to the valve body is connected with the disk seat, the direction section and the axial swing joint of piston of disk seat, install the cover between piston and the disk seat and locate the spring on the piston, the connection intracavity of disk seat is installed and is exported the takeover.

In a preferred embodiment, the inlet connection pipe is welded to the valve body.

In a preferred embodiment, the valve seat is welded to the valve body.

In a preferred embodiment, the connecting end of the valve seat is welded and fixed to the outlet connection pipe.

In a preferred embodiment, the free end of the inlet and/or outlet connection piece is provided with a dust cap.

The disk seat of this embodiment, formula structure as an organic whole has integrateed among the prior art guide pillar, retaining ring and has connected the function of three part, and the disk seat of integrated multiple functions is applied to in the piston check valve for the part that constitutes piston check valve is less, and in the assembling process, the installation disk seat compares with installing guide pillar, retaining ring and connecting three part respectively, and the assembly process is retrencied more, and assembly process is simpler, need not auxiliary positioning, and the assembly precision promotes obviously. In addition, the piston is compared with the assembly body that guide pillar, retaining ring and joint constitute, and structural strength is higher, and stability is better, and is higher with the axiality of valve body and piston.

Drawings

FIG. 1 is a schematic diagram of a piston check valve according to the prior art;

FIG. 2 is a schematic structural diagram of the piston check valve of the present embodiment;

FIG. 3 is a perspective view of the valve seat in the present embodiment;

FIG. 4 is a schematic sectional view of the valve seat in the present embodiment;

FIG. 5 is a schematic view of a blank structure after the stamping process of process 10 when manufacturing the valve seat of the present embodiment;

fig. 6 is a left side view of the blank shown in fig. 5.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, an integral connection, or a detachable connection; may be communication within two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention in specific situations.

As shown in fig. 2, the piston type check valve of the present embodiment includes a valve body 2, and an inlet connection pipe 1 is welded to one end of the valve body 2. Wherein a piston 5 is arranged in the valve body 2, and a sealing element 4 and a gasket 3 are arranged on one side of the piston 5 close to the inlet connecting pipe 1. The valve seat 20 is connected to one end of the valve body 2 far away from the inlet connection pipe 1, and the valve seat 20 is fixedly connected with the valve body 2.

As the greatest improvement of the present embodiment, the valve seat 20 is of a one-piece structure. As shown in fig. 3 and 4, the valve seat includes a guide section 21, a base section 22, a tapered transition section 25, and a connecting section 23 in this order. Wherein, the guide section 21 is axially matched with the piston 5, and the piston 5 can move along the axial direction.

In this embodiment, a spring 6 sleeved on the piston is installed between the piston 5 and the valve seat 20, and when the fluid pressure in the inlet connection pipe 1 is greater than the elastic force of the spring 6, the piston 5 is driven to move axially and compress the spring 6, so that the sealing ring 4 is separated from the sealing end inside the valve body, and the check valve is in a conducting state. When the pressure in the inlet connecting pipe 1 is smaller than the elastic force of the spring, the spring drives the piston to move to the position where the sealing ring is abutted against the sealing end, so that the one-way valve is in a closed state.

The valve seat 20 of the present embodiment has a connecting cavity 28 disposed inside the connecting section 23 for connecting the outlet nozzle 10, and the bottom of the connecting cavity 28 is provided with a positioning step 26 for positioning and supporting the end of the outlet nozzle 10.

In the present embodiment, a transition cavity 29 is provided inside the tapered transition section 25, and the connection cavity 28 and the transition cavity 29 are communicated through a connection hole 27.

In the present embodiment, the base body segment 22 is provided with three overflowing holes 24 penetrating through the base body segment 22 and communicating with the transition cavity 29. Preferably, the overflowing holes are uniformly distributed in the circumferential direction. Of course, the number of the overflowing holes may be other numbers, and is not particularly limited herein.

In a preferred embodiment, in this embodiment, the inlet connection pipe is welded and fixed to the valve body.

In a preferred embodiment, the valve seat is welded to the valve body.

In a preferred embodiment, the connecting end of the valve seat is welded to the outlet connection pipe.

In a preferred embodiment, in the present embodiment, the free end of the inlet connection pipe and/or the outlet connection pipe is provided with a dust cap.

The special part of this embodiment lies in, disk seat formula structure as an organic whole has integrateed among the prior art guide pillar, retaining ring and the function that connects three part, and the disk seat of integrated multiple functions is applied to in the piston check valve for the part that constitutes piston check valve is less, and in the assembling process, installation disk seat compares with installing guide pillar, retaining ring and the three part that connects respectively, and the assembly process is retrencied more, and assembly process is simpler, need not auxiliary positioning, and the assembly precision promotes obviously. In addition, the piston is compared with the assembly body that guide pillar, retaining ring and joint constitute, and structural strength is higher, and stability is better, and is higher with the axiality of valve body and piston.

As another modification of the present embodiment, the manufacturing method of the valve seat 20 includes the following steps:

step 10: and a stamping process, namely stamping and forming the bar stock through a die, wherein the stamped blank body comprises a large-diameter section 30 and a small-diameter section 31 positioned on one side of the large-diameter section as shown in fig. 5, wherein the large-diameter section 30 and the small-diameter section 31 are coaxial.

As the special points of the present embodiment, as shown in fig. 5 and 6, the end surface of the large diameter section on the side of the small diameter section has the slot 32, and the slot 32 is formed by press forming in the punching stage as the overflowing hole.

Step 20: and a turning step of turning the blank formed in the step 10, wherein the small-diameter section 31 is turned to form the pilot section 21, and the large-diameter section 30 is turned to sequentially form the base body section 22, the tapered transition section 25, and the connecting section 23.

The multi-section structure formed by turning has the technical advantages of simple processing technology and high processing precision.

Step 30: and a drilling process, wherein the end face of the connecting section 23 is drilled, the drilling diameter is the diameter of the connecting hole 27, and the drilling depth is that the drilling depth at least reaches the bottom of the slotted hole 32 from the end face of the connecting section 23, so that a structural foundation is provided for the forming of the overflowing hole.

Step 40: and a boring step of boring the hole based on the drilled hole formed in the step 30 to form a transition cavity 29, wherein after the boring step, the transition cavity 29 is communicated with the slot hole 32, and the slot hole 32 forms the overflowing hole 24.

Step 50: and a hole expanding process, wherein a connecting cavity 28 is formed through a hole expanding process, and the bottom of the connecting cavity 28 forms the positioning step 26.

The manufacturing method of the valve seat comprises the steps of firstly processing a blank through a stamping process, particularly forming a slotted hole for forming the overflowing hole in the blank, and then completing the manufacturing of the valve seat through a turning process, a drilling process, a boring process and a hole expanding process in sequence.

Although the manufacturing method adopts conventional process means, the structure of the traditional valve seat and the piston type check valve is changed and the performance of the piston type check valve is improved through special process route design. The method has the technical advantages of simple process, high structural strength of the machined valve seat and low cost.

In summary, the above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a valve seat, its characterized in that, valve seat (20) formula structure as an organic whole, the valve seat includes direction section (21), base member section (22), taper changeover portion (25) and linkage segment (23) in proper order, linkage segment inside is provided with connecting chamber (28), inside changeover portion (29) that are provided with of taper changeover portion, communicate through connecting hole (27) between connecting chamber and the changeover portion, the chamber end in connecting chamber is provided with location step (26), be provided with at least one overflow hole (24) that run through base member section and communicate with the changeover portion on the base member section.

2. The valve seat of claim 1, wherein said flow orifice is a plurality of flow orifices, and a plurality of said flow orifices are circumferentially evenly distributed.

3. The utility model provides a piston check valve, its characterized in that includes valve body (2) at least, (1) are taken over in the one end fixedly connected with import of valve body, install piston (5) in the valve body, one side that the piston is close to the import and takes over is provided with sealing member (4), the one end that the import was taken over was kept away from to the valve body is connected with claim 1 or 2 the disk seat, the guide section and the axial swing joint of piston of disk seat, install spring (6) that the cover was located on the piston between piston and the disk seat, install export takeover (10) in the connection intracavity of disk seat.

4. The piston check valve as claimed in claim 3, wherein said inlet connection is welded to said valve body.

5. The piston check valve as claimed in claim 3, wherein said valve seat is welded to said valve body.

6. The piston check valve as claimed in claim 3, wherein the connecting end of said valve seat is welded to the outlet connection tube.

7. Piston check valve according to any of the claims 3-6, characterized in that the free end of the inlet connection and/or the outlet connection is provided with a dust cap (11).