CN210531741U - Mute check valve with automatic pressure relief structure - Google Patents
Mute check valve with automatic pressure relief structure Download PDFInfo
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- CN210531741U CN210531741U CN201921189225.0U CN201921189225U CN210531741U CN 210531741 U CN210531741 U CN 210531741U CN 201921189225 U CN201921189225 U CN 201921189225U CN 210531741 U CN210531741 U CN 210531741U
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Abstract
The utility model discloses a silent check valve with an automatic pressure relief structure, which comprises a valve body, a valve seat, a valve clack, a check assembly, a water inlet cavity and a water outlet cavity which are separated in the valve body, wherein a water inlet pressure relief hole communicated with the water outlet cavity and a water outlet pressure relief hole communicated with the water inlet cavity are arranged in the valve body, and a pressure relief valve is arranged between the water inlet pressure relief hole and the water outlet pressure relief hole; therefore, when the pressure in the water inlet cavity disappears and the return water pressure at the water outlet cavity is too high, a large water hammer and sound are easily generated, part of the return water can be discharged back into the water inlet cavity through the water inlet pressure relief hole and the water outlet pressure relief hole, and the automatic pressure relief pressure is preset through the adjusting pressure relief valve, so that the use safety of a pipe network is ensured; the other effect is when the silence formula check valve is closed, will be to the pipe network construction maintenance behind the valve, can open the relief valve completely, and pressure relief pressure sets up to 0 promptly. Meanwhile, a pressure gauge communicated with the water outlet cavity is additionally arranged outside the valve body, so that the static pressure value of the medium in the valve body can be displayed in real time, and a user can better master and use the mute check valve.
Description
Technical Field
The utility model relates to a silent check valve specifically indicates an automatic pressure relief structure's silent check valve.
Background
The existing silent check valve has the use advantages of noise elimination, water hammer prevention and the like, but has the defects that when the back pressure is too large, the functions of the noise elimination and the water hammer prevention are weak, so that the valve is easy to generate sound and vibration when opened and closed, and the use safety of a pipe network can be hidden danger due to the too large back pressure. Meanwhile, the existence of back pressure in the check valve can also cause that the construction and maintenance of the pipe network at the rear end of the check valve cannot be carried out. In addition, the static pressure value of the medium in the valve body cannot be known by a user when the check valve works, so that the mute check valve cannot be better mastered and used.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect and provide one kind and still can realize noise elimination and water hammer under the operating mode of high back pressure to can also show the silence formula check valve of an automatic pressure release structure of the static pressure value of medium in the valve body in real time.
The technical problem of the utility model is realized through following technical scheme:
a silent check valve with an automatic pressure relief structure comprises a valve body, a valve seat and a valve clack in the valve body, and a check assembly for driving the valve clack and the valve seat to form check opening and closing, wherein the valve clack is matched with the valve seat to divide the interior of the valve body into a water inlet cavity and a water outlet cavity; and a pressure gauge communicated with the water outlet cavity is arranged outside the valve body.
The pressure relief valve include the pressure relief valve body and rotate the valve rod of installing in the pressure relief valve body, pressure relief valve body the inner install on the valve body, valve rod outer end stretch out pressure relief valve body and connect the hand wheel subassembly, the valve rod the inner connects the pressure relief valve clack through spring assembly, and the pressure relief valve clack pushes away by spring assembly and stretches out pressure relief valve body the inner, and then the non return is opened and close the pressure release hole of intaking.
The spring assembly comprises an upper spring seat and a lower spring seat which are axially and movably installed in the pressure release valve body, and pressure release springs which elastically push the upper spring seat and the lower spring seat respectively, the inner end of the valve rod is in threaded connection with the upper spring seat, the inner end of the lower spring seat is provided with a spring rod extending out of the inner end of the pressure release valve body, and the valve clack is fixed at the tail end of the spring rod.
The valve body on be equipped with the mounting groove that communicates pressure release hole and play water pressure release hole respectively, pressure release valve body the inner install in this mounting groove.
The hand wheel assembly comprises a hand wheel main body with a scale ring and a dial, a shifting sheet is arranged on the hand wheel main body, and the hand wheel assembly further comprises a scale driving plate which is matched with the hand wheel main body to rotate and is shifted to rotate by the shifting sheet.
The pressure measuring valve is characterized in that a pressure measuring hole communicated with the water outlet cavity is formed in the valve body, a pressure pipe communicated with the pressure measuring hole is arranged outside the valve body, and a pressure gauge is installed at the tail end of the pressure pipe.
The valve seat is a sealing ring pressed on the outer edge of a water through hole in the valve body.
The non-return assembly comprises a flow guide body fixed in the water outlet cavity, a guide hole which has the same axial lead with the water through hole is arranged in the flow guide body, a guide shaft which is movably and telescopically arranged in the guide hole is arranged at the rear end of the valve clack, non-return springs which are mutually pushed are arranged between the valve clack and the flow guide body, and the valve clack is pushed by the elasticity of the non-return springs to be in sealing contact with the valve seat and form non-return opening and closing.
The valve body is internally provided with an axially through valve cavity, the valve seat is arranged in the middle of the valve cavity, the lower part of the valve cavity is provided with a water inlet cavity, and the upper part of the valve cavity is provided with a water outlet cavity; the flow guide body is arranged at the top of the water outlet cavity and is screwed and fixed in the water outlet cavity.
Compared with the prior art, the utility model is mainly characterized in that a water inlet pressure relief hole communicated with the water outlet cavity and a water outlet pressure relief hole communicated with the water inlet cavity are arranged in the valve body, and a pressure relief valve is arranged between the water inlet pressure relief hole and the water outlet pressure relief hole; therefore, when the pressure in the water inlet cavity disappears and the return water pressure at the water outlet cavity is too high, a large water hammer and sound are easily generated, part of the return water can be discharged back into the water inlet cavity through the water inlet pressure relief hole and the water outlet pressure relief hole, the automatic pressure relief pressure is preset through the adjusting pressure relief valve, and the use safety of a pipe network is ensured; the other effect is when silence formula check valve closes, when will be to the pipe network behind the valve when maintaining under construction, can open the relief valve completely, and pressure relief pressure sets up to 0 promptly. Meanwhile, a pressure gauge communicated with the water outlet cavity is additionally arranged outside the valve body, so that the static pressure value of the medium in the valve body can be displayed in real time, and a user can better master and use the mute check valve.
Drawings
Fig. 1 is a schematic sectional view of the present invention.
Fig. 2 is a schematic sectional structure diagram of the pressure relief valve.
Fig. 3 is a schematic structural view of a handwheel assembly.
Fig. 4 is a schematic view of a fitting structure of the hand wheel body and the scale ring.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the drawings.
As shown in the figures 1-4, the pressure-relief valve comprises a valve body 1, a water inlet cavity 11, a water outlet cavity 12, a water outlet cavity 13, a water inlet pressure-relief hole 14, a water outlet pressure-relief hole 15, a water through hole 16, a pressure measuring hole 17, a mounting groove 2, a valve seat 3, a valve clack 3, a guide shaft 31, a check assembly 4, a flow guide body 41, a guide hole 411, a check spring 42, a pressure relief valve 5, a pressure relief valve body 51, a pressure relief valve body 52, a valve rod 53, a hand wheel assembly 531, a hand wheel body 532, a scale ring 533, a scale disc 534, a dial 535, a scale dial 54, a spring assembly 54, an upper spring seat 541, a pressure relief spring 542, a pressure relief spring 543, a lower spring seat 544, a spring rod 55, a pressure relief valve clack 6, a pressure gauge 7 and.
A silent check valve with an automatic pressure relief structure is mainly related to a silent check valve capable of automatically relieving pressure, and the silent check valve is mainly composed of a valve body 1, a valve seat 2 and a valve clack 3 in the valve body, a check assembly 4 for driving the valve clack and the valve seat to form check opening and closing, and the like.
Wherein, the valve body 1 is internally provided with a valve cavity which is axially communicated up and down as shown in figure 1, the middle part of the valve cavity is provided with a water through hole 15 which is communicated up and down, the valve seat 2 is a sealing ring which is pressed on the outer edge of the water through hole 15, the lower part of the valve cavity is arranged as a water inlet cavity 11 with the water through hole 15 as a boundary, and the upper part of the valve cavity is arranged as a water outlet cavity 12.
Valve clack 3 and non return subassembly 4 all set up in the play water cavity 12 of disk seat 2 top, this non return subassembly 4 is including fixing the baffle 4 in a water cavity 12, concrete structure is: the guide body 4 is arranged from the top of the water outlet cavity 12 and screwed and fixed in the water outlet cavity 12 by screw threads, a guide hole 411 which has the same axial lead with the water through hole is arranged in the guide body 4, a guide shaft 31 which is connected and extends upwards is arranged at the rear end of the valve clack 3, the guide shaft is movably and telescopically arranged in the guide hole 411, and a check spring 42 which is pushed mutually is arranged between the valve clack 3 and the guide body 41; therefore, the valve clack 3 can be in sealing contact with the valve seat 2 and forms a check opening and closing by the elastic pushing of the check spring 42.
That is, a sealing pair is formed between the valve clack 3 and the valve seat 2, the valve clack 3 can keep enough sealing specific pressure under the action of the check spring 42 to prevent backflow, when the water inlet cavity 11 provides pressure water, the check spring 42 is stressed and compressed, the valve clack 3 rises to open the check valve, and if the water pressure provided by the water inlet cavity 11 is lower than the compression elastic force of the check spring 42, the check valve is in a closed state.
The valve body 1 in be equipped with the pressure release hole 14 of intaking 13 and the play water pressure release hole that communicates intake chamber 11 that communicate goes out water cavity 12, be equipped with the mounting groove 17 that communicates pressure release hole 13 and play water pressure release hole 14 respectively on the valve body 1 between the pressure release hole of intaking, going out water, install relief valve 5 in this mounting groove.
The pressure relief valve 5 is a valve adopting a hidden rod type lifting structure and comprises a pressure relief valve body 51, inner end threads of the pressure relief valve body are screwed and installed in the installation groove 17, the pressure relief valve further comprises a valve rod 52 rotatably installed in the pressure relief valve body 51, the outer end of the valve rod extends out of the pressure relief valve body 51 to be connected with a hand wheel assembly 53, and the inner end of the valve rod 52 is connected with a pressure relief valve clack 55 through a spring assembly 54.
As shown in fig. 2, the spring assembly 54 mainly includes an upper spring seat 541 and a lower spring seat 543 movably mounted in the axial direction in the pressure relief valve body 51, and a pressure relief spring 542 elastically pushed between the upper spring seat and the lower spring seat, the inner end of the valve rod 52 is connected to the upper spring seat 541 by a thread, the inner end of the lower spring seat 543 is provided with a spring rod 544 connected with the inner end of the pressure relief valve body 51 and extending downward, and the tail end of the spring rod is fixed with a pressure relief valve clack 55, so that the pressure relief valve clack can be pushed by the spring assembly 54 to extend out of the inner end of the pressure relief valve body 51.
As shown in fig. 3, the handwheel assembly 53 mainly includes a handwheel body 531 with a scale ring 532 and a dial 533, a dial 534 is disposed on the handwheel body 531, and a scale dial 535 which is engaged with the handwheel body 531 to rotate and is dialed to rotate by the dial 534 as shown in fig. 4.
Therefore, the handwheel assembly 53 drives the valve rod 52 to rotate, so that the rotation of the valve rod can be converted into the lifting movement of the upper spring seat 541, when the upper spring seat 541 moves inwards, the pressure relief spring 542 is compressed to increase the elastic force, and the lower spring seat 543 is further pressed, and the increased elastic force acts on the pressure relief valve clack 55 to form a seal with the water inlet pressure relief hole 13; therefore, the elastic force of the relief spring 542 can be adjusted by rotating the hand wheel assembly 53 in the forward and reverse directions, and the drain pressure value can be set according to actual needs when the relief spring is used.
The hand wheel assembly 53 with the special design is used for conveniently setting the pressure of the pressure relief spring 542 of the pressure relief valve 5, for example, the dial 533 and the scale ring 532 on the hand wheel body 531 are fixed, the scale ring is provided with scale values of 0-9, when the scale ring rotates for one circle, namely, the scale value is 9 → 0, the poking sheet 534 on the hand wheel body 531 can poke the groove on the scale dial 535, so that the scale value on the dial 533 is increased by 1, the compression amount of the spring is increased by 0.1mm, the reading of a user is facilitated, and the hand wheel assembly 53 is more accurate and flexible to debug, reduces the debugging time, and quickly and conveniently debugs the preset pressure relief pressure.
The utility model adds the relief valve 5 on the valve body 1, when the pressure of the water inlet cavity 11 disappears and the backwater pressure at the water outlet cavity 12 is too large, the water hammer and the sound are easy to generate, part of backwater can be discharged back to the water inlet cavity 11 through the water inlet relief holes 13 and the water outlet relief holes 14, and the automatic pressure relief pressure is preset by adjusting the relief valve 5, so that the safety of a pipe network is ensured; the other effect is when the check valve is closed, when the pipe network after will going on the valve is under construction and is maintained, can open relief valve 5 completely, and pressure relief pressure sets up to 0 promptly.
Meanwhile, a pressure gauge 6 communicated with the water outlet cavity 12 is additionally arranged outside the valve body 1, and the pressure gauge specifically comprises: be equipped with the pressure cell 16 that feeds through out water cavity 12 in the valve body 1, be equipped with the manometer pipe 7 of switch-on pressure cell 16 outside the valve body 1, the terminal installation manometer 6 of this manometer pipe, just so can show the static pressure value of medium in the valve body 1 in real time, convenience of customers's better grasp and use this silence formula check valve.
The above description is only an embodiment of the present invention, and it should be understood by those skilled in the art that any structural design equivalent to this embodiment is included in the scope of the present invention.
Claims (8)
1. A silent check valve with an automatic pressure relief structure comprises a valve body (1), a valve seat (2) and a valve clack (3) in the valve body, and a check assembly (4) for driving the valve clack and the valve seat (2) to open and close in a check mode, wherein the valve clack (3) and the valve seat (2) are matched to divide the interior of the valve body (1) into a water inlet cavity (11) and a water outlet cavity (12), a water inlet pressure relief hole (13) communicated with the water outlet cavity (12) and a water outlet pressure relief hole (14) communicated with the water inlet cavity (11) are formed in the valve body (1), and a pressure relief valve (5) is arranged between the water inlet pressure relief hole and the water; valve body (1) be equipped with manometer (6) that intercommunication goes out water cavity (12) outward, its characterized in that relief valve (5) including pressure release valve body (51) and rotate valve rod (52) of installing in the relief valve body, pressure release valve body (51) the inner install on valve body (1), valve rod (52) outer end stretch out pressure release valve body (51) and connect hand wheel assembly (53), valve rod (52) the inner is through spring assembly (54) connection pressure release valve clack (55), and the pressure release valve clack is pushed up by spring assembly (54) and stretch out pressure release valve body (51) the inner, and then the check is opened and close pressure release hole (13) of intaking.
2. The silent check valve with automatic pressure relief structure as claimed in claim 1, wherein said spring assembly (54) comprises an upper spring seat (541) and a lower spring seat (543) axially movably mounted in the pressure relief valve body (51), and a pressure relief spring (542) elastically pushing between the upper spring seat and the lower spring seat, respectively, the inner end of said valve stem (52) is screwed on the upper spring seat (541), the inner end of said lower spring seat (543) is provided with a spring rod (544) extending out of the inner end of the pressure relief valve body (51), and said pressure relief flap (55) is fixed at the end of said spring rod (544).
3. The silent check valve with the automatic pressure relief structure as claimed in claim 1, wherein said valve body (1) is provided with an installation groove (17) respectively communicating with said water inlet pressure relief hole (13) and said water outlet pressure relief hole (14), and the inner end of said pressure relief valve body (51) is installed in said installation groove (17).
4. The silent check valve with the automatic pressure relief structure as claimed in claim 1, wherein said hand wheel assembly (53) comprises a hand wheel body (531) with a scale ring (532) and a dial (533), a dial (534) is disposed on the hand wheel body (531), and a scale dial (535) is engaged with the hand wheel body (531) to be rotated by the dial (534).
5. The silent check valve with automatic pressure relief structure as claimed in claim 1, wherein the valve body (1) is provided with a pressure measuring hole (16) communicated with the water outlet chamber (12), a pressure tube (7) communicated with the pressure measuring hole (16) is arranged outside the valve body (1), and a pressure gauge (6) is arranged at the end of the pressure tube.
6. The silent check valve with automatic pressure relief structure as claimed in claim 1, wherein said valve seat (2) is a sealing ring press-fitted to the outer edge of the water passage hole (15) in the valve body (1).
7. The silent check valve with the automatic pressure relief structure as claimed in claim 6, wherein the check assembly (4) comprises a guide body (41) fixed in the water outlet cavity (12), a guide hole (411) having the same axial line as the water through hole (15) is provided in the guide body, a guide shaft (31) movably and telescopically mounted in the guide hole (411) is provided at the rear end of the valve flap (3), a check spring (42) for pushing each other is provided between the valve flap (3) and the guide body (41), and the valve flap (3) is pushed by the check spring (42) to be in sealing contact with the valve seat (2) and form the check opening and closing.
8. The silent check valve with the automatic pressure relief structure as claimed in claim 7, wherein said valve body (1) is internally provided with an axially through valve cavity, said valve seat (2) is arranged in the middle of the valve cavity, the lower part of the valve cavity is provided with a water inlet cavity (11), and the upper part of the valve cavity is provided with a water outlet cavity (12); the flow guide body (41) is arranged at the top of the water outlet cavity (12) and is screwed and fixed in the water outlet cavity (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921189225.0U CN210531741U (en) | 2019-07-26 | 2019-07-26 | Mute check valve with automatic pressure relief structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921189225.0U CN210531741U (en) | 2019-07-26 | 2019-07-26 | Mute check valve with automatic pressure relief structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210531741U true CN210531741U (en) | 2020-05-15 |
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ID=70599281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921189225.0U Active CN210531741U (en) | 2019-07-26 | 2019-07-26 | Mute check valve with automatic pressure relief structure |
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| Country | Link |
|---|---|
| CN (1) | CN210531741U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957948A (en) * | 2021-11-02 | 2022-01-21 | 曾秀云 | Secondary water supply system for waterproof hammer |
-
2019
- 2019-07-26 CN CN201921189225.0U patent/CN210531741U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957948A (en) * | 2021-11-02 | 2022-01-21 | 曾秀云 | Secondary water supply system for waterproof hammer |
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