阅读说明：本技术 消防用阀体结构 (Valve body structure for fire control ) 是由 祝冠华 于 2021-09-30 设计创作，主要内容包括：本发明公开了消防用阀体结构,包括上阀壳、中阀壳、下阀壳和阀芯；上阀壳内设置有上支撑板,中阀壳内设置有中支撑板,下阀壳内设置有密封板；阀芯包括锥齿盘、移动调节板和密封垫板,移动调节板、上支撑板、中支撑板和密封板均设置有供流体通过的孔；移动调节板和密封垫板之间设置有弹簧,上支撑板配合中支撑板对锥齿盘进行安装和定位,密封垫板在弹簧的作用下被压在密封板上实现密封截止作用；转动锥齿盘从而改变移动调节板和密封垫板之间的间距,以此改变弹簧的初始压缩量。本发明公开了消防用阀体结构,能够按照实际工作情况调节开启压强,实现一阀多用的目的；并且具有常开功能,满足更多的使用场景。(The invention discloses a valve body structure for fire fighting, which comprises an upper valve shell, a middle valve shell, a lower valve shell and a valve core, wherein the upper valve shell is provided with a first valve core; an upper supporting plate is arranged in the upper valve shell, a middle supporting plate is arranged in the middle valve shell, and a sealing plate is arranged in the lower valve shell; the valve core comprises a conical fluted disc, a movable adjusting plate and a sealing base plate, and the movable adjusting plate, the upper supporting plate, the middle supporting plate and the sealing plate are all provided with holes for fluid to pass through; a spring is arranged between the movable adjusting plate and the sealing base plate, the upper supporting plate is matched with the middle supporting plate to install and position the bevel gear disc, and the sealing base plate is pressed on the sealing plate under the action of the spring to realize a sealing stop function; the bevel disk is rotated to change the spacing between the movable adjustment plate and the seal pad, thereby changing the initial compression of the spring. The invention discloses a valve body structure for fire fighting, which can adjust the opening pressure according to the actual working condition and realize the purpose of one valve with multiple functions; and the device has a normally open function, and meets more use scenes.)

1. Valve body structure for fire control, its characterized in that: comprises an upper valve casing (3), a middle valve casing (2), a lower valve casing (3) and a valve core; an upper supporting plate (31) is arranged in the upper valve casing (3), a middle supporting plate (21) is arranged in the middle valve casing (2), and a sealing plate (11) is arranged in the lower valve casing (3); the valve core comprises a conical fluted disc (6), a movable adjusting plate (5) and a sealing cushion plate (4), and holes for fluid to pass through are formed in the movable adjusting plate (5), the upper supporting plate (31), the middle supporting plate (21) and the sealing plate (11); a spring (52) is arranged between the movable adjusting plate (5) and the sealing cushion plate (4), the upper supporting plate (31) is matched with the middle supporting plate (21) to mount and position the conical fluted disc (6), and the sealing cushion plate (4) is pressed on the sealing plate (11) under the action of the spring (52) to realize a sealing stop function; the conical fluted disc (6) is rotated to change the distance between the movable adjusting plate (5) and the sealing cushion plate (4), so that the initial compression amount of the spring (52) is changed.

2. The valve of claim 1, wherein: go up backup pad (31) and be provided with a fastening section of thick bamboo (32), a fastening section of thick bamboo (32) bottom with be provided with the bearing groove on well backup pad (21), be provided with pressure bearing (61) in the bearing groove, be provided with between two pressure bearing (61) awl fluted disc (6).

3. The valve of claim 2, wherein: awl fluted disc (6) meshing is connected with bevel gear (7), bevel gear (7) are provided with dwang (71), and dwang (71) tip stretches out outside well valve casing (2), dwang (71) end is provided with rotates wheel (72), thereby orders about bevel gear (7) through twisting rotary wheel (72) and rotates, finally makes awl fluted disc (6) rotate.

4. The valve of claim 1, wherein: the top of the movable adjusting plate (5) is provided with a threaded pipe (51), the threaded pipe (51) penetrates through the conical fluted disc (6) and the conical fluted disc are connected through threads; the lateral wall that removes regulating plate (5) is provided with the sand grip of a plurality of vertical directions, the inner wall of well valve casing (2) is provided with the recess that quantity corresponds, the sand grip card is gone into make in the recess remove regulating plate (5) and can only reciprocate in well valve casing (2).

5. The valve of claim 1, wherein: the upper side and the lower side of the sealing base plate (4) are respectively provided with an upper pressing plate (42) and a lower pressing plate (43), the upper pressing plate (42) is matched with the lower pressing plate (43) to clamp the sealing base plate (4) and keep the sealing base plate flat, the diameter of the lower pressing plate (43) is smaller than the aperture of a hole for water circulation on the sealing plate (11), and the diameter of the upper pressing plate (42) is larger than the aperture of the hole for water circulation on the sealing plate (11).

6. The valve of claim 5, wherein: a connecting rod (41) penetrates through the center of the sealing base plate (4), an end head (411) is arranged at the bottom end of the connecting rod, a compression nut (44) is arranged on the connecting rod (41), and the compression nut is matched with the end head (411) to compress an upper pressure plate (42), the sealing base plate (4) and a lower pressure plate (43) between the sealing base plate and the connecting rod; and sealing treatment is carried out between the connecting rod (41) and the sealing cushion plate (4).

7. The valve of claim 4, wherein: the upper shell (3) is a right-angle bent pipe in appearance, a boss (33) is arranged at the bent part, an internal thread hole is formed in the boss (33), an adjusting nut (34) is in threaded connection with the internal thread hole, the top end of the connecting rod (41) penetrates through the threaded pipe (51) and enters the inner cavity of the upper shell (3), a pull rope is fixedly connected to the top end of the connecting rod (41), and the end part of the pull rope upwards penetrates through the outer wall of the upper shell (3) and is connected with the adjusting nut (34); when the internal thread hole is screwed to the bottom, the adjusting nut (34) releases the pull rope downwards, so that the sealing cushion plate (4) completely covers the sealing plate (11) to be sealed.

8. The valve of claim 7, wherein: the top of the adjusting nut (34) is fixedly connected with an adjusting turntable (35).

9. The valve of claim 7, wherein: the bottom surface of the movable adjusting plate (5) is provided with a plurality of stop blocks, and the stop blocks act on the ends of the springs (52) to generate blocking effect, so that relative displacement or rotation between the two is avoided.

10. The valve of claim 1, wherein: the upper valve casing (3), the middle valve casing (2) and the lower valve casing (3) are assembled and installed in a threaded connection mode, and a sealing ring is arranged at the connection position for sealing; or the upper valve casing (3), the middle valve casing (2) and the lower valve casing (3) are welded together by utilizing a welding mode.

Technical Field

The invention relates to the technical field of fire fighting equipment, in particular to a valve body structure for fire fighting.

Background

The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. It is a control component in fluid conveying system, and has the functions of stopping, regulating, guiding, preventing counter flow, stabilizing pressure, shunting or overflow and pressure relief, etc. Valves used in fluid control systems range in variety and size from the simplest shut-off valves to the variety of valves used in extremely complex autonomous systems.

The valve can be controlled by adopting various transmission modes, such as manual, electric, hydraulic, pneumatic, turbine, electromagnetic hydraulic, electrohydraulic, pneumatic hydraulic, spur gear, bevel gear drive and the like; the valve can be operated according to the preset requirement under the action of pressure, temperature or other forms of sensing signals, or can be simply opened or closed without depending on the sensing signals, and the valve can make the opening and closing piece perform lifting, sliding, swinging or rotating motion by depending on a driving or automatic mechanism, so that the size of the flow passage area of the valve can be changed to realize the control function of the valve.

At present, the opening pressure of most valves on the market is determined when the valves leave a factory and cannot be adjusted, so that a purchaser needs to purchase the valves according to actual requirements. However, in some special situations, the opening pressure needs to be changed, so that the existing valves on the market cannot meet the requirements.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a valve body structure for fire fighting, which can adjust the opening pressure according to the actual working condition and realize the purpose of one valve with multiple purposes; and the device has a normally open function, and meets more use scenes.

In order to solve the technical problem, the invention is solved by the following technical scheme: the fire-fighting valve body structure comprises an upper valve shell, a middle valve shell, a lower valve shell and a valve core; an upper supporting plate is arranged in the upper valve shell, a middle supporting plate is arranged in the middle valve shell, and a sealing plate is arranged in the lower valve shell; the valve core comprises a conical fluted disc, a movable adjusting plate and a sealing base plate, and the movable adjusting plate, the upper supporting plate, the middle supporting plate and the sealing plate are all provided with holes for fluid to pass through; a spring is arranged between the movable adjusting plate and the sealing base plate, the upper supporting plate is matched with the middle supporting plate to install and position the conical fluted disc, and the sealing base plate is pressed on the sealing plate under the action of the spring to realize a sealing stop function; the conical fluted disc is rotated to change the spacing between the movable adjusting plate and the sealing pad plate, so that the initial compression amount of the spring is changed.

Among the above-mentioned technical scheme, preferably, it is provided with a fastening section of thick bamboo to go up the backup pad, fastening bobbin base with be provided with the bearing groove in the well backup pad, the bearing inslot is provided with pressure bearing, is provided with between two pressure bearing conical fluted disc.

Among the above-mentioned technical scheme, preferably, the awl fluted disc meshing connection has bevel gear, bevel gear is provided with the dwang, and the dwang tip stretches out outside the well valve casing, the dwang end is provided with rotates the wheel, thereby orders about bevel gear through twisting the rotation wheel and rotates, finally makes the awl fluted disc rotate.

In the above technical solution, preferably, a threaded pipe is arranged at the top of the movable adjusting plate, and the threaded pipe passes through the conical fluted disc and is connected with the conical fluted disc through threads; the lateral wall that removes the regulating plate is provided with the sand grip of a plurality of vertical directions, the inner wall of well valve casing is provided with the recess that quantity corresponds, the sand grip card is gone into make in the recess remove the regulating plate and can only reciprocate in well valve casing.

In the above technical scheme, preferably, an upper pressing plate and a lower pressing plate are respectively arranged on the upper side and the lower side of the sealing pad plate, the upper pressing plate is matched with the lower pressing plate to clamp the sealing pad plate and keep the sealing pad plate flat, the diameter of the lower pressing plate is smaller than the aperture of a hole for water circulation on the sealing plate, and the diameter of the upper pressing plate is larger than the aperture of the hole for water circulation on the sealing plate.

In the above technical solution, preferably, a connecting rod penetrates through the center of the sealing pad, an end head is arranged at the bottom end of the connecting rod, a compression nut is arranged on the connecting rod, and the compression nut cooperates with the end head to compress the upper pressure plate, the sealing pad and the lower pressure plate therebetween; and sealing treatment is carried out between the connecting rod and the sealing cushion plate.

Among the above-mentioned technical scheme, preferably, the epitheca is the right angle return bend for the appearance, is provided with the boss in the department of buckling, the boss is provided with the internal thread hole, internal thread hole threaded connection has adjusting nut, the sealing pad board is provided with the connecting rod in the centre, the connecting rod upwards extends and pierces through adjusting nut department, and is provided with the fitting nut cooperation at the tip, adjusting nut is in the internal thread hole is twisted when going to the end, makes the sealing pad board is totally covered seal on the closing plate.

In the above technical solution, preferably, the top of the adjusting nut is fixedly connected with an adjusting turntable.

Among the above-mentioned technical scheme, preferably, removal regulating plate bottom surface is provided with a plurality of dogs, the dog acts on the end of spring produces the hindrance effect, avoids both to take place relative displacement or rotation.

In the above technical solution, preferably, the upper valve casing, the middle valve casing and the lower valve casing are assembled and installed in a threaded connection manner, and a sealing ring is provided at a connection part for sealing; or the upper valve shell, the middle valve shell and the lower valve shell are welded together in a welding mode.

The invention provides a valve body structure for fire fighting, which can adjust the opening pressure according to the actual working condition, realizes the purpose of one valve with multiple purposes, and can meet various different use scenes by a buyer only needing to buy one valve. And this device still has normally to open the function, can realize the purpose of quick pressure release, satisfies more use scenes.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be discussed below, it is obvious that the technical solutions described in conjunction with the drawings are only some embodiments of the present invention, and for those skilled in the art, other embodiments and drawings can be obtained according to the embodiments shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic structural view of the bevel disk and its peripheral parts of the present invention.

Fig. 3 is a schematic structural view of the sealing pad and its peripheral parts of the present invention.

Fig. 4 is a schematic structural diagram of a second embodiment of the present invention.

In the figure, the lower valve casing 1, the inlet 10, the sealing plate 11, the middle valve casing 2, the middle support plate 21, the upper valve casing 3, the outlet 30, the upper support plate 31, the fastening cylinder 32, the boss 33, the adjusting nut 34, the adjusting dial 35, the sealing pad 4, the connecting rod 41, the end 411, the upper pressing plate 42, the lower pressing plate 43, the pressing nut 44, the movable adjusting plate 5, the threaded pipe 51, the spring 52, the bevel gear disc 6, the pressure bearing 61, the bevel gear 7, the rotating rod 71 and the rotating wheel 72.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments described herein without the need for inventive work, are within the scope of the present invention.

The first embodiment is as follows: as shown in fig. 1 to 3, the first embodiment discloses an adjustable valve, which comprises an upper valve housing 3, a middle valve housing 2, a lower valve housing 3 and a valve core; an upper support plate 31 is arranged in the upper valve casing 3, a middle support plate 21 is arranged in the middle valve casing 2, and a sealing plate 11 is arranged in the lower valve casing 3; the valve core comprises a conical fluted disc 6, a movable adjusting plate 5 and a sealing cushion plate 4, and holes for fluid to pass through are formed in the movable adjusting plate 5, the upper supporting plate 31, the middle supporting plate 21 and the sealing plate 11; a spring 52 is arranged between the movable adjusting plate 5 and the sealing cushion plate 4, the upper supporting plate 31 is matched with the middle supporting plate 21 to mount and position the conical fluted disc 6, and the sealing cushion plate 4 is pressed on the sealing plate 11 under the action of the spring 52 to realize a sealing stop function; the conical toothed disc 6 is rotated to change the spacing between the movable adjusting plate 5 and the sealing pad 4, thereby changing the initial compression of the spring 52.

Go up backup pad 31 and be provided with a fastening section of thick bamboo 32, a fastening section of thick bamboo 32 bottom with be provided with the bearing groove on the well backup pad 21, be provided with pressure bearing 61 in the bearing groove, be provided with between two pressure bearing 61 awl fluted disc 6.

The bevel gear plate 6 is connected with a bevel gear 7 in a meshed mode, the bevel gear 7 is provided with a rotating rod 71, the end portion of the rotating rod 71 extends out of the middle valve shell 2, the end of the rotating rod 71 is provided with a rotating wheel 72, the rotating wheel 72 is twisted to drive the bevel gear 7 to rotate, and finally the bevel gear plate 6 rotates. A threaded pipe 51 is arranged at the top of the movable adjusting plate 5, the threaded pipe 51 penetrates through the conical fluted disc 6, and the threaded pipe and the conical fluted disc are connected through threads; the lateral wall that removes regulating plate 5 is provided with the sand grip of a plurality of vertical directions, the inner wall of well valve casing 2 is provided with the recess that quantity corresponds, the sand grip card is gone into make in the recess remove regulating plate 5 can only reciprocate in well valve casing 2.

The bevel gear 7 is driven by the rotating wheel 73 to rotate, and the bevel gear disc 6 rotates along with the bevel gear disc by utilizing the meshing transmission relationship of the gears. The bevel gear 6 is in threaded connection with the threaded pipe 51, and the movable adjusting plate 5 is limited to rotate, so that the movable adjusting plate 5 can be driven to move upwards or downwards under the rotation of the bevel gear 6. This compresses, or releases, the spring 32. Spring 32 is blocked between removal regulating plate 5 and sealing pad plate 4, and only water pressure is big enough, and the spring action of spring 32 can be overcome to the power that acts on sealing pad plate 4 bottom, just can be with sealing pad plate 4 jack-up to realize the circulation of rivers. The compression length of the spring 32 is changed to deform the spring, so that the inner side of the spring applied to the seal pad 4 can be changed. Thus, the regulation is completed.

The calculation formula according to the spring force is as follows: f = F × G × D ^4/(8 × n × D ^3)

F: pressure in units of N;

f: deformation in mm;

g: shear modulus of the material, in MPa;

d: the diameter of the steel wire is in mm;

n: the effective number of turns of the spring;

d: the pitch diameter of the spring is in mm.

For the same spring, G, D, n and D in the parameters are fixed numbers, and the variable is f. Therefore, the present apparatus can change F by changing F.

In order to improve the sealing effect and the service life, the sealing pad 4 needs to be skillfully designed. Specifically, the method comprises the following steps: an upper pressing plate 42 and a lower pressing plate 43 are respectively arranged on the upper side and the lower side of the sealing base plate 4, the upper pressing plate 42 is matched with the lower pressing plate 43 to clamp the sealing base plate 4 and keep the sealing base plate 4 flat, the diameter of the lower pressing plate 43 is smaller than the aperture of a hole for water circulation on the sealing plate 11, and the diameter of the upper pressing plate 42 is larger than the aperture of the hole for water circulation on the sealing plate 11. A connecting rod 41 penetrates through the center of the sealing cushion plate 4, an end head 411 is arranged at the bottom end of the connecting rod, a compression nut 44 is arranged on the connecting rod 41, and the compression nut is matched with the end head 411 to compress an upper pressure plate 42, the sealing cushion plate 4 and a lower pressure plate 43; the sealing process is performed between the tie rod 41 and the seal pad 4.

The upper valve shell 3, the middle valve shell 2 and the lower valve shell 3 are assembled and installed in a threaded connection mode, and a sealing ring is arranged at the connection position for sealing; or the upper valve housing 3, the middle valve housing 2 and the lower valve housing 3 are welded together by using a welding method.

The upper valve housing 3 is provided with an outlet 30 and the lower valve housing 1 is provided with an inlet 10, water entering the valve from the inlet 10. After the valve element opens, it flows out of the outlet 30.

Finally, to avoid the conical toothed disc 6 from rotating by itself under the effect of the spring force, it is necessary to provide a locking function. The device of the group surrounds the rotating rod 71 on the outer wall of the middle valve shell 2 and is provided with a plurality of insertion holes, and the rotating wheel 72 is provided with one or a plurality of through locking holes. And magnets are provided within the rotatable wheel 72 for magnetically attracting one or more latches. The bolt penetrates through the locking hole and then is inserted into the inserting hole, so that the self-locking function is realized. When the adjustment is needed, the bolt is pulled out.

In addition, the bolt can assist the rotation of the rotating wheel 72, thereby saving labor.

Example two: the second embodiment provides a valve with a normally open function, and can realize quick normally opening. The adjusting nut 34 is mainly rotated to move upwards in the boss 33, so that the pull rope is pulled upwards, the connecting rod 41 and the sealing cushion plate 4 are driven to move upwards through the pull rope, the through hole in the sealing plate 11 is opened, and the normally open function is realized.

The second embodiment is specifically configured as shown in fig. 4, and is different from the first embodiment in that: the upper shell 3 is a right-angle bent pipe in appearance, a boss 33 is arranged at the bent part, an internal thread hole is arranged on the boss 33, the internal thread hole is in threaded connection with an adjusting nut 34, the top end of the connecting rod 41 penetrates through the threaded pipe 51 and enters the inner cavity of the upper shell 3, the top end of the connecting rod 41 is fixedly connected with a pull rope, and the end part of the pull rope penetrates upwards through the outer wall of the upper shell 3 and is connected with the adjusting nut 34; when the internal threaded hole is screwed to the bottom, the adjusting nut 34 releases the pull rope downwards, so that the sealing cushion plate 4 completely covers the sealing plate 11 for sealing.

The top of the adjusting nut 34 is fixedly connected with an adjusting turntable 35. The adjusting turnplate 35 is utilized to drive the adjusting nut 34 to rotate, so that labor can be saved, and the adjusting can be quickly carried out.

The bottom surface of the movable adjusting plate 5 is provided with a plurality of stop blocks, and the stop blocks act on the end heads of the springs 52 to generate blocking effect, so that relative displacement or rotation between the stop blocks and the springs is avoided. With this arrangement, the wear of the movable adjusting plate 5 and the spring 52 over time is prevented, so that the life of the movable adjusting plate 5 can be prolonged. In actual production, the processing degree of difficulty and the cost of removing regulating plate 5 all are higher than top board 43, so set up like this, can enough promote life, can also reduce the maintenance cost in later stage.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention is indicated by the appended claims, rather than the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

The invention provides a valve body structure for fire fighting, which can adjust the opening pressure according to the actual working condition, realizes the purpose of one valve with multiple purposes, and can meet various different use scenes by a buyer only needing to buy one valve. And this device still has normally to open the function, can realize the purpose of quick pressure release, satisfies more use scenes.