CN214037019U

CN214037019U - Adjusting valve group for maritime work machinery

Info

Publication number: CN214037019U
Application number: CN202023171593.8U
Authority: CN
Inventors: 徐瑞良; 赵小田; 申柳洋
Original assignee: Yitu Hydraulic Engineering Technology Changzhou Co ltd
Current assignee: Yitu Hydraulic Engineering Technology Changzhou Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-08-24
Anticipated expiration: 2030-12-24

Abstract

The utility model relates to a marine affairs marine worker is governing valve group for machinery, it includes preceding trunk line, back trunk line and adjustable governing valve, preceding trunk line is connected at the inlet of adjustable governing valve, back trunk line is connected at the liquid outlet of adjustable governing valve, adjustable governing valve includes the valve body, case and pressure drive assembly, pressure drive assembly is connected with the case, the case cooperation is in the valve body, be connected with the choke valve on the preceding trunk line, the choke valve inlet communicates with preceding trunk line, the liquid outlet and the pressure drive assembly of choke valve communicate, pressure drive assembly includes the shell, push pedal and spring, push pedal and shell sealing cooperation form the pressure chamber, the push pedal is connected with the case, the spring is located the shell, the effort direction that the spring produced to the push pedal is towards the direction that the case was opened, choke valve and pressure chamber communicate, be connected with the choke pipe on the shell, choke pipe one end and pressure chamber communicate, the other end is communicated with the rear main pipeline. This application has the effect of the pressure fluctuation behind the adjustable governing valve that reduces.

Description

Adjusting valve group for maritime work machinery

Technical Field

The application relates to the technical field of marine engineering machinery, in particular to a regulating valve group for marine engineering machinery.

Background

Various valve banks are needed to be used for controlling the movement of machinery, wherein an adopted adjusting valve bank needs an instrument valve for accurately adjusting parameters such as pressure, temperature and flow of media such as liquid and gas, and the requirement on the adjusting precision of the valve is high under the working condition of high pressure difference and small flow of many media.

Application publication number is CN111089181A discloses a pressure regulating valve in the patent application file, including the commander, detect actuating mechanism, take over, decompression filter, main valve core, valve rod, inserted bar, spring, choke valve, commander case, the commander cross-under is inside detecting actuating mechanism to through the bolt and detect actuating mechanism fixed connection, detect the actuating mechanism downside and pass through bolt and commander case fixed connection, take over bolt and commander case fixed connection through bolt and commander case one end, the other end passes through bolt and main valve fixed connection, decompression filter valve concatenates in the takeover middle part, the main valve core sets up inside the main valve, and the upper end is provided with the valve rod, the valve rod passes through bolt and inserted bar fixed connection, the choke valve sets up in inserted bar one side, through spring and inserted bar elastic connection.

However, in the above structure, when the pressure before the regulating valve fluctuates during use, the pressure after the regulating valve also fluctuates greatly.

SUMMERY OF THE UTILITY MODEL

In order to reduce the pressure fluctuation behind the adjustable governing valve, this application provides a marine worker is governing valve group for machinery.

The application provides a marine for mechanical valve bank of adjusting, adopts following technical scheme:

a regulating valve group for maritime work machinery comprises a front main pipeline, a rear main pipeline and an adjustable regulating valve, wherein the front main pipeline is connected with a liquid inlet of the adjustable regulating valve, the rear main pipeline is connected with a liquid outlet of the adjustable regulating valve, the adjustable regulating valve comprises a valve body, a valve core and a pressure driving assembly, the pressure driving assembly is connected with the valve core, the valve core is matched in the valve body, a throttle valve is connected onto the front main pipeline, the liquid inlet of the throttle valve is communicated with the front main pipeline, the liquid outlet of the throttle valve is communicated with the pressure driving assembly, the pressure driving assembly comprises a shell, a push plate and a spring, the push plate is in sealing fit with the shell to form a pressure cavity, the push plate is connected with the valve core, the spring is positioned in the shell, one end of the spring is abutted against the push plate, the other end of the spring is abutted against the shell, and the direction of acting force generated by the spring on the push plate faces the direction that the valve core is opened, the throttling valve is communicated with the pressure cavity, the shell is connected with a throttling pipe, one end of the throttling pipe is communicated with the pressure cavity, and the other end of the throttling pipe is communicated with the rear main pipeline.

Through adopting above-mentioned technical scheme, during the use, connect the choke valve on the preceding trunk line, when pressure on the preceding trunk line takes place the increase, pressure behind the choke valve is along with the increase also, connect the pressure chamber behind the choke valve, during the pressure increase of pressure intracavity, the push pedal is downstream under the effect of pressure, make the push pedal drive the case and remove to the direction of closing, thereby reduce the clearance between case and the valve body, and then maintain the pressure in the trunk line of back, connect the choke pipe on the pressure chamber simultaneously, the choke pipe can guarantee the pressure establishment in the pressure chamber, consequently, can reach the effect of reducing adjustable governing valve back pressure oscillation.

Preferably, the throttle valve comprises a shell and a core, the core is located in the shell and is in sliding fit with the shell, an adjusting stud is arranged on the shell, the adjusting stud is in threaded connection with the shell, and when the core is opened, the core abuts against the end of the adjusting stud.

Through adopting above-mentioned technical scheme, adjust double-screw bolt and casing threaded connection, when will adjusting the double-screw bolt and rotate, can adjust the maximum aperture of inner core to can adapt to the application of multiple occasion.

Preferably, the inner core is sleeved with a pressure spring, one end of the pressure spring abuts against the shell, the other end of the pressure spring abuts against the inner core, and the acting force direction of the pressure spring on the inner core is the closing direction of the inner core.

Through adopting above-mentioned technical scheme, pressure spring one end butt is on the casing, and the other end butt is on the inner core to the spring of different elastic coefficient can be selected to the pressure spring and be used for adapting to different pressure chamber pressure changes.

Preferably, a valve seat is arranged in the valve body and comprises a connecting portion and a guide portion, the connecting portion is in threaded connection with the valve body, the valve element is located in the guide portion, and a sealing inclined surface used for being matched with the valve element is formed in the connecting portion and the guide portion.

Through adopting above-mentioned technical scheme, when connecting portion threaded connection was in the valve body, can dismantle the change that can conveniently be to the disk seat with the disk seat from the valve body.

Preferably, the upper portion of the guide part is provided with a filler, a through hole is formed in the side wall of the guide part, and a gap is reserved between the outer wall of the guide part and the valve body.

Through adopting above-mentioned technical scheme, set up the through-hole on the lateral wall of guide part, make the liquid that enters into the guide part can follow the position of through-hole and flow out fast.

Preferably, a communication channel is arranged on the valve core, one end of the communication channel is located at the sealing position of the valve core, and the other end of the communication channel is located at one end, far away from the connecting part, of the valve core.

Through adopting above-mentioned technical scheme, set up the intercommunication way on the case, the medium that passes through from sealed inclined plane can enter into the upper end of case through the intercommunication way, makes things convenient for the medium can the disk seat.

Preferably, one end of the valve core is inserted into the connecting portion, and the diameter of the valve core gradually decreases while the end of the valve core inserted into the connecting portion extends toward the connecting portion.

Through adopting above-mentioned technical scheme, the case reduces to the one end diameter that connecting portion extend gradually to can adapt to the aperture demand in different clearances when the case is opened.

Preferably, a protective cover is fixedly arranged on the shell, and the adjusting stud is located in the protective cover.

Through adopting above-mentioned technical scheme, set up the safety cover on the casing, can reduce the operation that the regulation double-screw bolt takes place the mistake.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the pressure in the pressure cavity is increased due to the increase of the pressure after passing through the throttle valve, the push plate moves downwards under the action of the pressure, so that the push plate drives the valve core to move towards the closing direction, the gap between the valve core and the valve body is reduced, and the rear pressure fluctuation effect of the adjustable regulating valve is reduced;

2. the adjusting stud is in threaded connection with the shell, and when the adjusting stud rotates, the maximum opening of the inner core can be adjusted, so that the adjusting stud can be applied to various occasions;

3. when the valve seat is connected in the valve body through the connecting part in a threaded manner, the valve seat can be detached from the valve body, and the valve seat can be conveniently replaced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic diagram of a full-section of the adjustable regulating valve;

fig. 3 is a schematic view of a full-section structure of the throttle valve.

Description of reference numerals: 1. a front main pipe; 2. a rear main pipeline; 3. an adjustable regulating valve; 31. a valve body; 311. connecting holes; 32. a valve core; 321. a communicating channel; 33. a housing; 34. pushing the plate; 35. a pressure chamber; 351. controlling the inlet; 352. a control outlet; 36. a spring; 37. a valve seat; 371. a connecting portion; 372. a guide portion; 373. sealing the inclined plane; 374. a through hole; 38. a filler; 4. a throttle valve; 41. a housing; 42. an inner core; 43. adjusting the stud; 44. a protective cover; 45. a pressure spring; 5. a throttle tube.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses marine for mechanical valve unit. Referring to fig. 1, including preceding trunk line 1 and back trunk line 2, set up adjustable governing valve 3 between trunk line 1 and back trunk line 2 in the front, preceding trunk line 1 is connected at adjustable governing valve 3's inlet, and back trunk line 2 links at adjustable governing valve 3's liquid outlet, makes preceding trunk line 1 and back trunk line 2 through adjustable governing valve 3 intercommunication, and the liquid in preceding trunk line 1 flows into in back trunk line 2. Preceding trunk line 1 is located adjustable governing valve 3's front portion and is connected with choke valve 4, choke valve 4's inlet and preceding trunk line 1 intercommunication, choke valve 4's liquid outlet and adjustable governing valve 3's control position intercommunication, thereby when choke valve 4 and preceding main pipe intercommunication, because during the pressure in the preceding trunk line changes, pressure behind choke valve 4 also has corresponding positive correlation's change, thereby choke valve 4 will be preceding in the trunk line 1 pressure change feed back adjustable governing valve 3 in, make adjustable governing valve 3 carry out self-adaptation regulation, thereby pressure in the trunk line behind adjustable governing valve 3 can be more stable.

Referring to fig. 1 and 2, the adjustable regulating valve 3 includes a valve body 31, a valve core 32, a housing 33 and a push plate 34, the valve body 31 is used for connecting to the front main pipe 1 and the rear main pipe 2, the valve core 32 is slidably connected in the valve body 31, the housing 33 is fixed on the valve body 31, the push plate 34 is located in the housing 33, and a pressure chamber 35 is formed between the upper surface of the push plate 34 and the housing 33, a control inlet 351 and a control outlet 352 are respectively arranged on the shell 33, the control inlet 351 and the control outlet 352 are both communicated with the pressure cavity 35, the control inlet 351 is connected with the liquid outlet of the throttle valve 4, the control outlet 352 is connected with a throttle pipe 5, one end of the throttle pipe 5 is communicated with the control outlet 352, the other end of the throttle pipe 5 is connected with the rear main pipeline 2, so that the medium passing through the pressure cavity 35 flows back into the rear main pipeline 2, and due to the arrangement of the throttle 5 it is ensured that a pressure difference is left between the pressure chamber 35 and the rear main conduit 2. When the pressure of the medium in the pressure cavity 35 is increased, the push plate 34 moves downwards, the push plate 34 is connected with the valve core 32, and the valve core 32 can be moved towards the closing direction when the push plate 34 moves downwards. Be located and be fixed with a plurality of springs 36 on the lower surface of push pedal 34, spring 36 one end is fixed in shell 33, the other end is fixed on push pedal 34, thereby can make push pedal 34 rebound under spring 36's effort, when push pedal 34 rebound, push pedal 34 drives case 32 and removes to the direction of opening, thereby when trunk line internal pressure increases, push pedal 34 receives decurrent pressure increase, make push pedal 34 move down and close case 32, increase adjustable governing valve 3's the fore-and-aft pressure difference, and then keep the pressure in trunk line 2 behind stable.

Referring to fig. 2, a valve seat 37 is arranged inside the valve body 31, the valve seat 37 comprises a connecting portion 371 and a guiding portion 372 which are integrally arranged, the connecting portion 371 and the guiding portion 372 are both cylindrical tubular structures, the diameter of the connecting portion 371 is smaller than that of the guiding portion 372, a connecting hole 311 is formed in the valve body 31, the connecting portion 371 is in threaded connection with the connecting hole 311, the valve seat 37 is installed in the valve body 31, and the valve seat 37 can be taken out of the valve body 31 after the valve seat 37 is damaged, so that the valve seat 37 is convenient to replace. A sealing inclined surface 373 is formed at the connection position between the connection portion 371 and the guide portion 372. Slide fit in the guide part 372 and set up case 32, the diameter reduces gradually when case 32's one end can stretch into in connecting portion 371 and extend to connecting portion 371, when case 32 opened, because the interval between case 32 and the sealed inclined plane 373 increases gradually to the convenience is adjusted case 32 fore-and-aft pressure. When the valve element 32 abuts against the seal slope 373, the valve element 32 can be in a closed state.

Referring to fig. 2, a plurality of through holes 374 are uniformly formed in the side wall of the guide portion 372, and a gap is left between the outer wall of the guide portion 372 and the periphery of the inside of the valve body 31, so that a medium flowing through the through holes 374 can conveniently enter the gap. A packing 38 is provided at the upper end of the guide 372, and the packing 38 enters into a seal with the valve body 31. The valve core 32 is provided with a communication channel 321, one end of the communication channel 321 is located at the sealing position of the valve core 32, and the other end extends out from the upper end of the valve core 32, so that when the valve core 32 is opened, liquid passing through the sealing inclined surface 373 enters the guide part 372 from the communication channel 321, and the medium can conveniently flow in.

Referring to fig. 3, the throttle valve 4 includes a housing 41 and a core 42, the core 42 is located inside the housing 41 and is matched with the housing 41, the core 42 is slidably matched with the housing 41, the core 42 is adjustable in the housing 41, an adjusting stud 43 is provided on the housing 41, the adjusting stud 43 is screwed with the housing 41, the length direction of the adjusting stud 43 is parallel to the moving direction of the core 42, and the core 42 can abut against the end of the adjusting stud 43 when opening, so that the opening degree of the maximum opening of the core 42 can be adjusted by the adjusting stud 43. A protective cover 44 is fixedly provided outside the housing 41 by bolts, and the end of the adjustment stud 43 is provided in the protective cover 44, so that the protective cover 44 can be opened when adjustment is required, and the setting of the protective cover 44 can reduce erroneous operation of the adjustment stud 43. A compression spring 45 is fitted over the inner core 42, one end of the compression spring 45 abuts against the housing 41, and the other end abuts against the inner core 42, and the inner core 42 is moved in the closing direction by the direction of the urging force of the compression spring 45 against the inner core 42.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a marine for mechanical adjusting valve group which characterized in that: including preceding trunk line (1), back trunk line (2) and adjustable control valve (3), the inlet at adjustable control valve (3) is connected to preceding trunk line (1), back trunk line (2) is even at the liquid outlet of adjustable control valve (3), adjustable control valve (3) include valve body (31), case (32) and pressure drive assembly, pressure drive assembly is connected with case (32), case (32) cooperation is in valve body (31), be connected with choke valve (4) on preceding trunk line (1), choke valve (4) inlet and preceding trunk line (1) intercommunication, the liquid outlet and the pressure drive assembly intercommunication of choke valve (4), pressure drive assembly includes shell (33), push pedal (34) and spring (36), push pedal (34) and shell (33) sealed cooperation form pressure chamber (35), the push plate (34) is connected with the valve core (32), the spring (36) is located in the shell (33), one end of the spring (36) abuts against the push plate (34), the other end of the spring (36) abuts against the shell (33), the acting force direction of the spring (36) on the push plate (34) faces the opening direction of the valve core (32), the throttle valve (4) is communicated with the pressure cavity (35), the shell (33) is connected with the throttle pipe (5), one end of the throttle pipe (5) is communicated with the pressure cavity (35), and the other end of the throttle pipe is communicated with the rear main pipeline (2).

2. The regulating valve group for marine machinery as claimed in claim 1, wherein: the throttling valve (4) comprises a shell (41) and a core (42), wherein the core (42) is located in the shell (41), the core (42) is in sliding fit with the shell (41), an adjusting stud (43) is arranged on the shell (41), the adjusting stud (43) is in threaded connection with the shell (41), and when the core (42) is opened, the core (42) abuts against the end of the adjusting stud (43).

3. The regulating valve group for marine machinery as claimed in claim 2, wherein: the pressure spring (45) is sleeved on the inner core (42), one end of the pressure spring (45) abuts against the shell (41), the other end of the pressure spring (45) abuts against the inner core (42), and the acting force direction of the pressure spring (45) on the inner core (42) is the closing direction of the inner core (42).

4. The regulating valve group for marine machinery as claimed in claim 1, wherein: be provided with valve seat (37) in valve body (31), valve seat (37) are including connecting portion (371) and guide part (372), connecting portion (371) and valve body (31) threaded connection, case (32) are located guide part (372), the junction of connecting portion (371) and guide part (372) is seted up and is used for with case (32) complex sealed inclined plane (373).

5. The regulating valve group for marine machinery as claimed in claim 4, wherein: the upper portion of the guide portion (372) is provided with a filler (38), a through hole (374) is formed in the side wall of the guide portion (372), and a gap is reserved between the outer wall of the guide portion (372) and the valve body (31).

6. The regulating valve group for marine machinery as claimed in claim 5, wherein: the valve core (32) is provided with a communication channel (321), one end of the communication channel (321) is located at the sealing position of the valve core (32), and the other end of the communication channel (321) is located at one end, far away from the connecting part (371), of the valve core (32).

7. The regulating valve group for marine machinery as claimed in claim 6, wherein: one end of the valve core (32) is inserted into the connecting part (371), and the diameter of the valve core (32) is gradually reduced in the process that the end inserted into the connecting part (371) extends to the connecting part (371).

8. The regulating valve group for marine machinery according to claim 2 or 3, wherein: a protective cover (44) is fixedly arranged on the shell (41), and the adjusting stud (43) is located in the protective cover (44).