CN217207931U

CN217207931U - Novel pressure reducing valve for boat

Info

Publication number: CN217207931U
Application number: CN202121868987.0U
Authority: CN
Inventors: 李雷; 李志杰; 刘春明; 关丽君; 金菊; 林小青; 张晗; 王剑; 林继海; 刘成林
Original assignee: Shenyang Shengshi Wuhuan Technology Co ltd
Current assignee: Shenyang Shengshi Wuhuan Technology Co ltd
Priority date: 2021-08-07
Filing date: 2021-08-07
Publication date: 2022-08-16
Anticipated expiration: 2031-08-07

Abstract

The utility model discloses a novel pressure reducing valve for a boat, which comprises a valve body, a valve cover, a valve seat and a valve clack, wherein the valve seat and the valve clack are arranged in the valve body; the valve seat is matched and connected with the valve body, the valve clack is arranged in the valve seat, the top end of the valve clack is exposed out of the valve seat, and the valve clack can be movably connected to the valve seat up and down; a diaphragm is arranged on the port of a middle flange of the valve body and is positioned above the valve seat and the valve clack; an adjusting spring is arranged in the valve cover above the diaphragm, and an upper spring seat connected with the upper end of the adjusting spring and a lower spring seat connected with the lower end of the adjusting spring are respectively arranged at the two ends of the adjusting spring; the top port of the valve cover is in threaded connection with an adjusting screw, and the bottom of the adjusting screw is abutted to the upper spring seat. The utility model provides a present not enough problem of flow of relief pressure valve after the throttle decompression for the ship, make this valve realize outlet pressure under certain flow, import pressure scope at required within range, satisfy water charging system's water requirement.

Description

Novel pressure reducing valve for boat

Technical Field

The utility model belongs to the technical field of the valve, specifically relate to a novel relief pressure valve for ship.

Background

The pressure reducing valve for the boat is installed on a return pipe of an outlet of a water replenishing pump of a primary circuit system, and has the main functions of regulating the boosting speed when the water replenishing pump is used for boosting the primary circuit system, providing a pressure regulating means for regular debugging of a safety valve at the outlet of the water replenishing pump and providing water for a low-pressure system. In a 09III first boat mooring test, the flow of the water after the pressure of the water replenishing valve is reduced is insufficient, the water using requirement of a water replenishing system cannot be met, and meanwhile, the pressure reducing valve also has the problems that the angle of the hand wheel operation torque is small, and the pressure change amplitude behind the valve is large.

Disclosure of Invention

Aiming at the problems, the utility model makes up the defects of the prior art and provides a novel pressure reducing valve for the boat; the utility model provides a present not enough problem of flow of relief pressure valve for ship after the throttle decompression, make this valve realize outlet pressure at required within range under certain flow, import pressure scope, satisfy water charging system's water requirement.

In order to achieve the above purpose, the utility model adopts the following technical scheme.

The utility model relates to a novel relief pressure valve for ship, its characterized in that: the valve comprises a valve body, a valve cover, a valve seat and a valve clack, wherein the valve seat and the valve clack are arranged in the valve body; the method is characterized in that: the valve seat is matched and connected with the valve body, the valve clack is arranged in the valve seat, the top end of the valve clack is exposed out of the valve seat, and the valve clack can be movably connected to the valve seat up and down; a diaphragm is arranged on the middle flange port of the valve body and is positioned above the valve seat and the valve clack, and the valve cover is connected with the middle flange port of the valve body in a matching way through the diaphragm; an adjusting spring is arranged in the valve cover above the diaphragm, and an upper spring seat connected with the upper end of the adjusting spring and a lower spring seat connected with the lower end of the adjusting spring are respectively arranged at two ends of the adjusting spring; the top port of the valve cover is in threaded connection with an adjusting screw, and the bottom of the adjusting screw is abutted to the upper spring seat.

As a preferred scheme of the utility model, the inlet and the outlet of the channels at the two sides of the valve body are both provided with internal threads, the outer side of the flange port in the valve body is provided with external threads, and the middle cavity of the valve body is provided with internal threads; the valve seat is provided with external threads, the external threads of the valve seat are matched and connected with the internal threads of the middle cavity of the valve body, and a first sealing ring is arranged at the tool withdrawal groove of the external threads of the valve seat.

Furthermore, a cavity matched and connected with the valve clack is arranged in the valve seat, and the valve clack is a rod-shaped component; a first pressure regulating sealing area with a section of conical surface with an angle of 60 degrees is arranged at the upper part of the cavity of the valve seat, and a second pressure regulating sealing area corresponding to the first pressure regulating sealing area in the valve seat is arranged at the upper part of the valve clack; a first positioning area is arranged in the middle of the cavity of the valve seat, a second positioning area corresponding to the first positioning area in the valve seat is arranged in the middle of the valve clack, and a section of cylindrical rod above the second pressure regulating sealing area of the valve clack is a driving area; the top in the valve seat is provided with a flow guide area, and the lowest part of the cavity of the valve seat is provided with a section of internal thread.

As the utility model discloses a another kind of preferred scheme, the internal thread department of disk seat cavity lower part is connected with the valve clack spring holder of outband screw thread, and valve clack spring holder inside is provided with counter bore and 4 passway holes, and valve clack spring holder bottom is provided with a word groove.

Furthermore, a valve clack spring is arranged in a counter bore in the valve clack spring seat, and the top end of the valve clack spring is connected with a cylindrical rod arranged at the lower part of the valve clack in the valve seat cavity in a matching mode.

As another preferred scheme of the utility model, the backplate has been detained at the disk seat top, exposes in one section and backplate looks butt in the valve clack top of disk seat.

As another preferred scheme of the utility model, the junction still is provided with the second sealing washer between the flange port in valve gap and the valve body, and the second sealing washer is located the top of diaphragm.

As another preferred scheme of the present invention, the upper spring seat and the lower spring seat are both boss structures, the boss surfaces of the upper spring seat and the lower spring seat are opposite, and two ends of the adjusting spring are connected between the bosses of the two spring seats; the outer edge of the lower end of the boss of the upper spring seat is set to be a conical surface, the bottom surface of the lower spring seat is set to be a spherical surface, and the spherical surface of the lower spring seat is in contact with the diaphragm.

As another preferred scheme of the utility model, the upper end of the valve cover is provided with internal and external threads, the lower end of the valve cover is provided with internal threads, and the internal threads at the lower end of the valve cover are matched and connected with the external threads at the flange port in the valve body; the internal thread of the upper end of the valve cover is matched and connected with the adjusting screw, and the adjusting screw is provided with a locking nut.

As another preferred scheme of the utility model, the external thread at the upper end of the valve cover is connected with a protective cover with internal thread, the upper end of the adjusting screw is square, and the bottom is spherical; and a groove is arranged on the surface of the upper spring seat which is matched and abutted with the bottom of the adjusting screw.

The beneficial effects of the utility model.

1. The pressure reducing valve for the novel boat, provided by the utility model, is provided with the valve clack and the valve seat structure which are mutually matched and connected, and finally successfully meets the requirements of the pressure reducing valve on the boat by arranging the conical surface with the angle of 60 degrees and the diaphragm and the adjusting spring structure in the pressure regulating and sealing area which is matched between the valve clack and the valve seat; when high-pressure and large-flow medium flows in from the inlet of the pressure reducing valve, the low-pressure and large-flow medium is conveyed out from the outlet of the pressure reducing valve through the difference of the flow areas among the positioning area, the pressure regulating and sealing area and the flow guiding area between the valve clack and the valve seat, and meanwhile, when the pressure of the inlet fluctuates, the balance force relation of the spring and the medium acting on the diaphragm is regulated, so that the pressure and the flow of the outlet are basically kept unchanged.

2. This novel relief pressure valve for ship has that the decompression is effectual, and flow is big, simple structure, compactness, reasonable in design, advantages such as reliable operation, owing to take above-mentioned scheme, when pressure oscillation appears in the front of the valve, the medium power of transmitting the diaphragm and the balance relation of spring force can make behind the valve pressure, flow remain unchanged basically, and it is easier to manufacture simultaneously, can wide application in the valve trade.

Drawings

In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and the detailed description of the present invention. It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only.

Fig. 1 is the overall structure schematic diagram of the novel pressure reducing valve for the boat of the present invention.

Fig. 2 is a schematic structural view of a valve seat of the novel pressure reducing valve for the boat.

Fig. 3 is a schematic structural diagram of a valve clack of the novel pressure reducing valve for the boat.

The mark in the figure is: 1 is a valve body; 2 is a valve seat; 3 is a valve clack spring seat; 4 is a valve clack spring; 5 is a first sealing ring; 6 is a guard plate; 7 is a valve clack; 8 is a valve cover; 9 is an adjusting spring; 10 is an upper spring seat; 11 is an adjusting screw; 12 is a shield; 13 is a lock nut; 14 is a lower spring seat; 15 is a membrane; 16 is a second sealing ring; 17 is a flow guide area; 18 is a first pressure regulating sealing area; 19 is a first positioning area; 20 is a driving area; 21 is a second pressure regulating sealing area; 22 is a second positioning area; a is an inlet; and B is an outlet.

Detailed Description

With the accompanying drawings of fig. 1 to 3, the utility model relates to a novel relief pressure valve for ship, including valve body 1, disk seat 2, valve clack spring holder 3, valve clack spring 4, first sealing washer 5, backplate 6, valve clack 7, valve gap 8, adjusting spring 9, go up spring holder 10, adjusting screw 11, guard shield 12, lock nut 13, lower spring holder 14, diaphragm 15, second sealing washer 16. The inlet A and the outlet B of the channels at the two ends of the valve body 1 are provided with threads and are connected with a pipeline through the threads; the valve seat 2 is connected with the valve body 1 through threads, and a first sealing ring 5 is placed at the tail end of the threaded connection to ensure sealing; the valve clack spring seat 3 is in threaded connection with the valve seat 2, a cavity is formed in the middle of the valve clack spring seat, the valve clack spring 4 and the valve clack 7 are placed in the cavity, and the part, extending out of the valve seat 2, of the valve clack 7 is buckled with the protective plate 6; a lower spring seat 14, an adjusting spring 9, an upper spring seat 10, a diaphragm 15 and a second sealing ring 16 are placed in the valve cover 8 and then are connected with the valve body 1 through threads; an adjusting screw 11 is screwed in from the upper end of the valve cover 8, after the screwing depth of the adjusting screw 11 is adjusted according to the pressure reduction and flow requirements of the pressure reducing valve, the adjusting screw 11 is locked by a locking nut 13, and the adjusting screw 11 is prevented from being loosened; finally, the cover 12 is screwed onto the valve cover 8 in order to prevent access to the set screw 11.

The sealing mode between the valve cover 8 and the valve body 1 is soft sealing, and a sealing ring is pressed through threads; the sealing mode between the valve body 1 and the valve seat 2 is soft sealing, and the sealing ring is pressed through threads.

The adjusting screw 11 is in threaded connection with the valve cover 8, and the force of the adjusting spring 9 is controlled by screwing the valve cover 8 into the depth.

The utility model discloses a theory of operation of relief pressure valve for ship: medium flows in from an inlet A of the pressure reducing valve, flows into an inner cavity formed by combining a valve seat 2 and a valve clack 7 through a small hole at the bottom end of a spring seat 3 of the valve clack, is screwed in an adjusting screw 11 to enable a diaphragm 15 to move downwards, at the moment, the medium flows out from a small hole formed by contacting the valve seat 2 and the valve clack 7, pushes the diaphragm 15 upwards, repeatedly adjusts the adjusting screw 11 to enable the pressure and the flow of an outlet B to meet the specification of technical requirements, locks the adjusting screw 11 by using a locking nut 13, and screws a protective cover 12 and a valve cover 8 together, when the flow in front of the valve changes, the pressure reducing valve adjusts itself through the force of the medium and an adjusting spring 9 acting on the diaphragm 15, and the stability of the flow and the pressure behind the valve is ensured.

Specifically, internal threads are arranged on an inlet A and an outlet B at two ends of a channel of the valve body 1, external threads are arranged at a middle flange, and internal threads are arranged in a middle cavity; the valve seat 2 is provided with an external thread which is connected with an internal thread of a cavity in the valve body 1, a first sealing ring 5 is placed at a tool withdrawal groove of the external thread of the valve seat 2, 4 channel holes are formed in the upper end of the valve seat 2, a cavity is formed below the valve seat 2, a pitch of conical surface is arranged at the upper end of the cavity, and a section of internal thread is arranged at the lowest end of the cavity; the valve clack spring seat 3 is provided with external threads, a counter bore and 4 passage holes are formed in the valve clack spring seat, and a straight groove is milled at the lower end of the valve clack spring seat; the valve clack 7 is a rod part, the upper end of the valve clack 7 is provided with a pitch of conical surface, the valve clack 7 is in clearance fit with a cavity below the valve seat 2, the valve clack spring 4 is placed in a counter bore of the valve clack spring seat 3 and hung on a cylinder at the lower end of the valve clack 7, the valve clack spring seat 3 and threads of the valve seat 2 are screwed, the valve clack 7 extends out of the valve seat 2 by one pitch, and the guard plate 6 is buckled on the round surface of the pitch; the diaphragm 15 is flatly placed at a flange in the valve body 1, and a second sealing ring 16 is placed above the diaphragm 15; the lower spring seat 14 is of a boss structure, a spherical surface is milled below the lower spring seat, and the spherical surface is in contact with the plane of the diaphragm; one end of the adjusting spring 9 is hung on a boss of the lower spring seat 14, the other end of the adjusting spring is hung on a boss of the upper spring seat 10, and a conical surface is milled below the boss of the upper spring seat 10; the upper end of the valve cover 8 is provided with internal and external threads, the middle flange is provided with internal threads, the internal threads at the middle flange are connected with the external threads at the middle flange of the valve body 1, the internal threads at the upper end are matched with the external threads of the adjusting screw 11, and the external threads at the upper end are matched with the internal threads of the shield 12; the upper part of the adjusting screw 11 is milled into a square, and the lower part is milled into a spherical surface.

Specifically, the internal threads of the inlet A and the outlet B at two ends of the channel of the valve body 1 are 2-Rc1-1/4 and are connected with the external threads of the pipeline; the external thread at the flange in the valve body 1 is M120 multiplied by 2-6g and is matched with the internal thread M120 multiplied by 2-6H at the flange in the valve cover 8; the inner threads of the middle cavity of the valve body 1 are M33 multiplied by 1.5-6H and are matched with the outer threads M33 multiplied by 1.5-6g of the valve seat 2; the internal thread of the valve seat 2 is M22 multiplied by 1.5-6H and is matched with the external thread M22 multiplied by 1.5-6g of the valve clack spring seat 3; the upper end of the valve seat 2 is provided with a channel hole of 4-phi 3, and the upper end of a cavity of the valve seat 2 is provided with a 60-degree conical surface matched with a 60-degree conical surface of the valve clack 7; the valve clack spring seat 3 is provided with a 6mm deep counter bore and a 4-phi 4 channel hole; the SR340 spherical surface is milled below the boss of the lower spring seat 14 and is in point contact with the plane of the diaphragm 15.

Specifically, the upper part of the adjusting screw 11 is milled to be square; a 120-degree conical surface is milled below the boss of the upper spring seat 10 and is in line contact with the SR8 spherical surface milled below the adjusting screw 11; the external thread at the upper end of the valve cover 8 is M36 multiplied by 1.5-6g and is matched with the internal thread M36 multiplied by 1.5-6H of the shield 12; the internal thread at the upper end of the valve cover 8 is Tr20 multiplied by 2-6H and is matched with the external thread Tr20 multiplied by 2-6g of the adjusting screw 11.

In addition, the utility model selects the diaphragm 15 with the largest effective sectional area as an important part for realizing the large-flow adjusting function of the pressure reducing valve for the novel boat; the novel pressure reducing valve for the boat keeps the pressure of an outlet B stable by depending on the balance relation between the acting force of the adjusting spring 9 and the medium force, and selects the adjusting spring with the spring stiffness of 129N/mm according to calculation and simulation analysis.

This novel valve clack 7 structure of relief pressure valve for ship is the triplex: a second positioning zone 22, a second pressure-regulating sealing zone 21, and a driving zone 20, see fig. 3. The valve seat 2 is structurally divided into three parts: a first positioning area 19, a first pressure-regulating sealing area 18 and a flow guiding area 17, which are shown in figure 2. The main functions of the positioning areas of the valve seat 2 and the valve clack 7 are that the valve seat and the valve clack are matched and positioned, and the pressure is basically not reduced; the main functions of the pressure regulating sealing area of the valve seat 2 and the valve clack 7 are medium pressure regulating and sealing, the position of the overflow area is matched with the conical surface of the body in order to ensure the pressure reducing effect and realize the large flow function, the conical surface has the function of slowing down the pressure to be rapidly reduced, and the continuity is realized for the increase and reduction of the overflow area. The main function of the actuation area 20 of the flap 7 is to raise or lower the membrane 15, thus ensuring a stable pressure behind the valve; the main function of the flow guide area 17 of the valve seat 2 is to increase the flow rate of the medium after passing through the pressure regulating sealing area and reduce the flow rate of the medium through flow guide.

It should be understood that the above detailed description of the present invention is only used for illustrating the present invention and not limited to the technical solutions described in the embodiments of the present invention, and it should be understood by those skilled in the art that the present invention can be modified or replaced with equivalent ones to achieve the same technical effects; as long as satisfy the operation needs, all be in the protection scope of the utility model.

Claims

1. A novel pressure reducing valve for a boat comprises a valve body (1), a valve cover (8), a valve seat (2) and a valve clack (7), wherein the valve seat (2) and the valve clack (7) are arranged in the valve body (1), the valve cover (8) is connected above the valve body (1), channels are arranged on two sides of the valve body (1), an inlet (A) is arranged in the channel on one side, and an outlet (B) is arranged in the channel on the other side; the method is characterized in that: the valve seat (2) is connected with the valve body (1) in a matching way, the valve clack (7) is arranged in the valve seat (2), the top end of the valve clack (7) is exposed out of the valve seat (2), and the valve clack (7) can be movably connected to the valve seat (2) up and down; a diaphragm (15) is arranged on a middle flange port of the valve body (1), the diaphragm (15) is positioned above the valve seat (2) and the valve clack (7), and the valve cover (8) is connected with the middle flange port of the valve body (1) in a matching manner through the diaphragm (15); an adjusting spring (9) is arranged in the valve cover (8) above the diaphragm (15), and an upper spring seat (10) connected with the upper end of the adjusting spring (9) and a lower spring seat (14) connected with the lower end of the adjusting spring (9) are respectively arranged at two ends of the adjusting spring (9); an adjusting screw (11) is connected to the top port of the valve cover (8) in a threaded manner, and the bottom of the adjusting screw (11) is abutted to the upper spring seat (10).

2. The novel pressure reducing valve for boats as claimed in claim 1, wherein: internal threads are arranged on an inlet (A) and an outlet (B) of channels on two sides of the valve body (1), external threads are arranged on the outer side of a flange port in the valve body (1), and internal threads are arranged in a middle cavity of the valve body (1); the valve seat (2) is provided with an external thread, the external thread of the valve seat (2) is matched and connected with the internal thread of the middle cavity of the valve body (1), and a first sealing ring (5) is arranged at the position of an external thread withdrawal groove of the valve seat (2).

3. The novel pressure reducing valve for boats as claimed in claim 1, wherein: a cavity which is matched and connected with the valve clack (7) is arranged in the valve seat (2), and the valve clack (7) is a rod-shaped component; a first pressure regulating sealing area (18) with a conical surface with an angle of 60 degrees is arranged at the upper part of the cavity of the valve seat (2), and a second pressure regulating sealing area (21) corresponding to the first pressure regulating sealing area (18) in the valve seat (2) is arranged at the upper part of the valve flap (7); a first positioning area (19) is arranged in the middle of a cavity of the valve seat (2), a second positioning area (22) corresponding to the first positioning area (19) in the valve seat (2) is arranged in the middle of the valve flap (7), and a section of cylindrical rod above a second pressure regulating sealing area (21) of the valve flap (7) is a driving area (20); the top in the valve seat (2) is provided with a flow guide area (17), and the lowest part of the cavity of the valve seat (2) is provided with a section of internal thread.

4. The novel pressure reducing valve for boats as claimed in claim 3, wherein: the valve seat is characterized in that a valve clack spring seat (3) with external threads is connected to the inner thread of the lowest portion of the cavity of the valve seat (2), a counter bore and 4 passage holes are formed in the valve clack spring seat (3), and a straight groove is formed in the bottom of the valve clack spring seat (3).

5. The novel pressure reducing valve for boats as claimed in claim 4, wherein: a valve clack spring (4) is arranged in a counter bore in the valve clack spring seat (3), and the top end of the valve clack spring (4) is connected with a cylindrical rod arranged at the lower part of a valve clack (7) in a cavity of the valve seat (2) in a matched mode.

6. The novel pressure reducing valve for boats as claimed in claim 1, wherein: the top of the valve seat (2) is buckled with a guard plate (6), and one section of the top end of the valve clack (7) exposed out of the valve seat (2) is abutted against the guard plate (6).

7. The novel pressure reducing valve for boats as claimed in claim 1, wherein: and a second sealing ring (16) is further arranged at the joint between the valve cover and the flange port in the valve body (1), and the second sealing ring (16) is positioned above the diaphragm (15).

8. The novel pressure reducing valve for boats as claimed in claim 1, wherein: the upper spring seat (10) and the lower spring seat (14) are of boss structures, the boss surfaces of the upper spring seat (10) and the lower spring seat (14) are opposite, and two ends of the adjusting spring (9) are connected between the bosses of the two spring seats; the outer edge of the lower end of the boss of the upper spring seat (10) is set to be a conical surface, the bottom surface of the lower spring seat (14) is set to be a spherical surface, and the spherical surface of the lower spring seat (14) is in contact with the diaphragm (15).

9. The novel pressure reducing valve for boats as claimed in claim 1, wherein: the upper end of the valve cover (8) is provided with internal and external threads, the lower end of the valve cover (8) is provided with internal threads, and the internal threads at the lower end of the valve cover (8) are in matched connection with the external threads at the flange port in the valve body (1); the internal thread of the upper end of the valve cover (8) is matched and connected with an adjusting screw (11), and a locking nut (13) is arranged on the adjusting screw (11).

10. The novel pressure reducing valve for boats as claimed in claim 9, wherein: the external thread at the upper end of the valve cover (8) is connected with a protective cover (12) with internal threads, the upper end of the adjusting screw (11) is square, and the bottom of the adjusting screw is spherical; and a groove is arranged on the surface of the upper spring seat (10) which is matched and abutted with the bottom of the adjusting screw (11).