CN215568182U

CN215568182U - Safety three-way sight glass valve

Info

Publication number: CN215568182U
Application number: CN202121494393.8U
Authority: CN
Inventors: 段盛忠
Original assignee: Yuhuan Beijinsi Fluid Control Technology Co ltd
Current assignee: Yuhuan Beijinsi Fluid Control Technology Co ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2022-01-18
Anticipated expiration: 2031-07-02

Abstract

The utility model discloses a safe three-way sight glass valve, which belongs to the technical field of fluid control and solves the problem of reduced safety and reliability under the condition of fluid control overpressure of the sight glass valve, and the technical scheme is characterized in that a safety valve and a bypass channel are added, a first ball valve switch comprises a first ball core, a first main channel for opening and closing, controlling and communicating a third pipeline and a first auxiliary channel opposite to an inlet of the safety valve in an opening state are arranged on the first ball core; the second ball valve switch comprises a second ball core, wherein a second main channel for opening and closing control of communicating with the third pipeline, a first through hole for communicating with the bypass channel and a second through hole for communicating with the third pipeline in a closed state are arranged on the second ball core, so that the effects of safe pressure relief, backflow control and improvement of service life and safety are achieved.

Description

Safety three-way sight glass valve

Technical Field

The utility model relates to the field of fluid control, relates to a sight glass valve, and particularly relates to a safe three-way sight glass valve.

Background

From the prior patent literature, it is known that: the patent document of the patent publication No. CN 207945321U is designed according to the current requirements of fluid control and installation operation, and the three-way sight glass valve structure is mainly used for controlling a fluid path and is convenient for observation.

According to the above structure, the following problems are found: in fluid control, under the condition that the water pressure condition of a water inlet interface of the three-way sight glass valve is not clear or difficult to determine, the water pressure is easy to exceed the standard, or in the using process, the valve rod is switched on or off, so that the water pressure of a local path or a space in the pipe exceeds the standard. The influence brought by the method is that the reliability and the service life of the internal sealing structure are reduced, the service life of the internal valve core is reduced, and hidden troubles of breakage and looseness exist in the endoscope part.

In view of the above problems, there is still room for improvement in safety and reliability, and improvement in such safety is required.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, at least solves the technical problems in the related technology to a certain extent, and provides a safe three-way sight glass valve so as to achieve the advantages of improving the fluid control safety, miniaturizing the whole structure, prolonging the service life of the product and prolonging the use safety and reliability.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a safe three-way sight glass valve comprises a three-way valve body, a first ball valve switch, a second ball valve switch and a sight glass assembly, wherein the three-way valve body is of a T-shaped structure and is provided with a first pipeline, a second pipeline and a third pipeline;

the first ball valve switch comprises a first ball core, and a first main channel for opening and closing, controlling and communicating a third pipeline and a first auxiliary channel which is opposite to an inlet of the safety valve in an opening state are arranged on the first ball core;

the second ball valve switch comprises a second ball core, wherein a second main channel for opening and closing control communication of the third pipeline, a first through hole for communicating the bypass channel and a second through hole for communicating the third pipeline in a closed state are arranged on the second ball core.

Through the aforesaid setting, utilize tee bend valve body and first ball valve switch, second ball valve switch, control first pipeline, the second pipeline, and the route of third pipeline switches and controls, because bypass channel and relief valve have been designed to this scheme, consequently when water pressure is too big on first pipeline, rivers directly control during unnecessary water discharge enters the second pipeline through the relief valve, then can control the intercommunication condition of second pipeline and third pipeline by second ball valve switch, thereby the stability and the security of rivers control have been improved greatly, avoid water pressure to first ball valve switch, second ball valve switch or tee bend valve body's life-span causes the influence.

As specific embodiments of the present invention, the following may be preferred: the safety valve comprises an external valve body, a piston body, a spring body, a pressure regulating seat and a top cover; the external valve body is in threaded connection with the three-way valve body and just faces to the position of the first ball valve switch, the piston body blocks the bypass channel and seals one end of the bypass channel, the piston body is assembled in the external valve body in a sliding mode and supports against the lower end of the spring body at the top, the upper end of the spring body is supported against one side of the pressure regulating seat, the pressure regulating seat is in threaded connection with the external valve body and can adjust the fixed position, and the top cover is in threaded connection with the upper end of the external valve body.

Through the aforesaid setting, in the design relief valve, consider the decline of the spring body at long-term working process elasticity reset capacity or need adjust initial elastic potential energy in the assembling process, so this scheme can be through the upper and lower height of pressure regulating seat, thereby change the initial compression state of the spring body, in long-term use, when spring elasticity is not enough, also can be through adjusting the position of pressure regulating seat, further compress the spring body in order to improve the compression potential energy of the spring body, in addition, through the sealed separation effect of piston body, realize the control to bypass channel, the inside of external valve body can effectively be protected in the assembly of top cap, avoid the foreign matter to get into. The external valve body is also convenient to detach and replace.

As specific embodiments of the present invention, the following may be preferred: the center position of top cap is provided with the hexagonal groove of indent, the opening edge in hexagonal groove has the direction hypotenuse, and the direction in hexagonal groove is the same with top cap feed direction.

Through the arrangement, the hexagonal groove is suitable for a hexagonal tool to perform matching operation, and subsequent disassembly and maintenance are facilitated. The beveled guide edge can facilitate rapid insertion of a hex tool.

As specific embodiments of the present invention, the following may be preferred: the guide post is arranged at the inner side end of the top cover and penetrates through the pressure regulating seat and the spring body.

Through the setting, the top cap can make the spring lid body more steady through the guide post except shielding the protection, with the cooperation of pressure regulating seat, further improves the stability of guide post.

As specific embodiments of the present invention, the following may be preferred: the three-way valve body is provided with an assembly groove for assembling the safety valve, the bottom of the assembly groove is provided with a rectangular groove, a sealing ring is filled in the rectangular groove, and the external valve body is pressed on the plane of the sealing ring.

Through the arrangement, in order to improve the sealing effect, the assembly groove and the sealing ring are utilized, the sealing area is improved, and therefore water flow can be prevented from overflowing at the gap.

As specific embodiments of the present invention, the following may be preferred: the axial lead of the bypass channel and the second ball valve switch are parallel or coincident.

Through the aforesaid setting, bypass channel's primary action lies in providing the pressure release route, in order to can be quicker, the smooth pressure release that carries on, then adopts and to pass through bypass channel above-mentioned setting and can be more high-efficient.

The technical effects of the utility model are mainly reflected in the following aspects:

1. the safety valve is integrally installed, so that the safety valve is safer and more reliable through a bypass channel and has a pressure relief function;

2. the structure is more integrated and miniaturized, the appearance of the safety valve device is greatly increased originally, and the connection space and the structural arrangement are more compact and reasonable through the design of the integral structure of the three-way valve body and the safety valve;

3. the operating mode is diversified, can control the route of rivers to it is safe and reliable more.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a sectional view of the structure of the embodiment;

fig. 3 is an exploded view of the structure of the embodiment, mainly illustrating a first ball valve switch and a second ball valve switch.

Reference numerals: 1. a three-way valve body; 11. a first pipeline; 12. a second pipeline; 13. a third pipeline; 14. a bypass channel; 15. assembling a groove; 16. a seal ring; 2. a first ball valve switch; 21. a first core; 22. a first main channel; 23. a first secondary channel; 3. a second ball valve switch; 31. a second core; 32. a second main channel; 33. a first through hole; 34. a second through hole; 4. a sight glass assembly; 5. a safety valve; 51. an external valve body; 52. a piston body; 53. a spring body; 54. a pressure regulating seat; 55. a top cover; 551. a hexagonal groove; 552. a hypotenuse guide; 553. and a guide post.

Detailed Description

The embodiments of the present invention will be described in detail below, examples of which are illustrated in the accompanying drawings, and the embodiments described below by referring to the drawings are exemplary and intended to explain the present invention so that the technical aspects of the present invention can be more easily understood and appreciated, and are not to be construed as limiting the present invention.

Example (b):

a safe three-way sight glass valve is shown in figure 1 and comprises a three-way valve body 1, a first ball valve switch 2, a second ball valve switch 3 and a sight glass assembly 4. The three-way valve body 1 is in a T-shaped structure and is provided with a first pipeline 11, a second pipeline 12 and a third pipeline 13. The sight glass assembly 4 is arranged at the intersection of a first pipeline 11, a second pipeline 12 and a third pipeline 13, a first ball valve switch 2 is arranged on the first pipeline 11, a second ball valve switch 3 is arranged on the second pipeline 12, a bypass channel 14 for communicating the first pipeline 11 with the second pipeline 12 is arranged on the three-way valve body 1, and a safety valve 5 for controlling the opening and closing of the bypass channel 14 is arranged on the three-way valve body 1. The sight glass assembly 4 is used to observe the condition of the fluid, typically water, in the interior wall. The sight glass assembly 4 is arranged at the junction of the first pipeline 11, the second pipeline 12 and the third pipeline 13, so that the water flow condition can be known more intuitively.

With reference to fig. 2 and 3, the first ball valve switch 2 includes a first ball core 21, and the first ball core 21 is provided with a first main passage 22 for opening and closing the third pipeline 13, and a first sub-passage 23 facing the inlet of the safety valve 5 in the open state. In the design, can directly set up first auxiliary channel 23 on current ball core structure, current ball core has first main channel 22, consequently for this scheme of implementation, can directly reform transform on this basis to can retrieve old part, form new part, utilize. And (5) processing by a drilling machine when the hole is formed.

The second ball valve switch 3 includes a second ball core 31, and the second ball core 31 is provided with a second main passage 32 for communicating the third pipeline 13 by opening and closing control, a first through hole 33 for communicating the bypass passage 14, and a second through hole 34 for communicating the third pipeline 13 in a closed state. Similarly, for the processing of the second core 31, referring to fig. 3, a first through hole 33 and a second through hole 34 are added to the existing core structure.

Referring to fig. 2, the relief valve 5 includes an external valve body 51, a piston body 52, a spring body 53, a pressure-regulating seat 54, and a top cover 55. The external valve body 51 is in threaded connection with the three-way valve body 1 and is opposite to the position of the first ball valve switch 2, the piston body 52 separates the bypass channel 14 and seals one end of the bypass channel 14, the piston body 52 is slidably assembled in the external valve body 51 and supports against the lower end of the spring body 53 at the top, the upper end of the spring body 53 is supported against one side of the pressure regulating seat 54, the pressure regulating seat 54 is in threaded connection with the external valve body 51 and can adjust the fixed position, and the top cover 55 is in threaded connection with the upper end of the external valve body 51. The center of the top cover 55 is provided with an inner concave hexagonal groove 551, the opening edge of the hexagonal groove 551 is provided with a beveled guide edge 552, and the direction of the hexagonal groove 551 is the same as the feeding direction of the top cover 55. The inner end of the top cover 55 is provided with a guide column 553, and the guide column 553 penetrates through the pressure regulating seat 54 and the spring body 53.

The three-way valve body 1 is provided with an assembly groove 15 for assembling the safety valve 5, the bottom of the assembly groove 15 is provided with a rectangular groove, the rectangular groove is filled with a sealing ring 16, and the external valve body 51 is pressed on the plane of the sealing ring 16.

During assembly, the sealing ring 16 with a rectangular cross section is filled and assembled, and then the safety valve 5 integrally presses the sealing ring 16 through a thread structure and forms a fixed and sealed assembly structure. For the installation and the disassembly of the safety valve 5, the specific component assembly and adjustment modes are as follows: firstly, the piston body 52 is plugged on the three-way valve body 1, the spring is placed on the convex part of the piston body 52, then the pressure regulating seat 54 is placed, at the moment, the center of the pressure regulating seat 54 is in a hexagonal hole structure, so that the pressure regulating seat 54 is operated by a hexagonal tool to rotate the pressure regulating seat 54, so that the pressure regulating seat 54 continuously moves downwards and compresses the spring body 53. Finally, the top cover 55 is assembled, and the top cover 55 can be quickly inserted into the hole of the pressure regulating seat 54 due to the design of the guide column 553 in the assembling process, so that the thread structure of the top cover 55 is matched with the thread structure of the external valve body 51, and only screwing is needed.

Referring to fig. 2, the axial lines of the bypass passage 14 and the second ball valve switch 3 are parallel or coincident. The preferred solution is a coincidence design.

To sum up, through first ball valve switch 2, can control the break-make of rivers on first pipeline 11, at the switch-on in-process, if water pressure is too big, make relief valve 5 work open to open bypass channel 14 reaches the purpose of pressure release, unnecessary water volume can directly enter into on second pipeline 12 fast. In addition, the safety valve 5 does not open when the water pressure is insufficient. In addition, the second ball valve switch 3 can control the on-off of the second pipeline 12 to the third pipeline 13.

The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.

Claims

1. A safe three-way sight glass valve comprises a three-way valve body (1), a first ball valve switch (2), a second ball valve switch (3) and a sight glass assembly (4), wherein the three-way valve body (1) is of a T-shaped structure and is provided with a first pipeline (11), a second pipeline (12) and a third pipeline (13), the sight glass assembly (4) is arranged at the intersection of the first pipeline (11), the second pipeline (12) and the third pipeline (13), the first ball valve switch (2) is arranged on the first pipeline (11), the second ball valve switch (3) is arranged on the second pipeline (12), and the safety three-way sight glass valve is characterized in that a bypass channel (14) which communicates the first pipeline (11) with the second pipeline (12) is arranged on the three-way valve body (1), and a safety valve (5) which is used for controlling the opening and closing of the bypass channel (14) is arranged on the three-way valve body (1);

the first ball valve switch (2) comprises a first ball core (21), and a first main channel (22) for controlling the opening and closing of and communicating with the third pipeline (13) and a first auxiliary channel (23) which is opposite to the inlet of the safety valve (5) in an opening state are arranged on the first ball core (21);

the second ball valve switch (3) comprises a second ball core (31), wherein a second main channel (32) for controlling opening and closing of the third pipeline (13) to be communicated, a first through hole (33) for communicating the bypass channel (14) and a second through hole (34) for communicating the third pipeline (13) in a closed state are arranged on the second ball core (31).

2. The safety three-way sight-glass valve of claim 1, wherein: the safety valve (5) comprises an external valve body (51), a piston body (52), a spring body (53), a pressure regulating seat (54) and a top cover (55); the external valve body (51) is in threaded connection with the three-way valve body (1) and is just opposite to the position of the first ball valve switch (2), the piston body (52) blocks the bypass channel (14) and seals one end of the bypass channel (14), the piston body (52) is slidably assembled in the external valve body (51) and supports the lower end of the spring body (53) at the top, the upper end of the spring body (53) is supported on one side of the pressure regulating seat (54), the pressure regulating seat (54) is in threaded connection with the external valve body (51) and can be adjusted to a fixed position, and the top cover (55) is in threaded connection with the upper end of the external valve body (51).

3. The safety three-way sight-glass valve of claim 2, wherein: the center position of the top cover (55) is provided with an inwards concave hexagonal groove (551), the opening edge of the hexagonal groove (551) is provided with a guiding bevel edge (552), and the direction of the hexagonal groove (551) is the same as the feeding direction of the top cover (55).

4. A safety three-way sight-glass valve according to claim 2 or 3, wherein: the inner end of the top cover (55) is provided with a guide post (553), and the guide post (553) penetrates through the pressure regulating seat (54) and the spring body (53).

5. The safety three-way sight-glass valve of claim 2, wherein: the three-way valve is characterized in that an assembly groove (15) for assembling the safety valve (5) is formed in the three-way valve body (1), a rectangular groove is formed in the bottom of the assembly groove (15), a sealing ring (16) is filled in the rectangular groove, and the external valve body (51) is pressed on the plane of the sealing ring (16).

6. The safety three-way sight-glass valve of claim 1, wherein: the axial leads of the bypass channel (14) and the second ball valve switch (3) are parallel or coincident.