Medium-low pressure valve capable of conveniently adjusting flow speed

Abstract

The utility model provides a medium and low pressure valve convenient to adjust flow velocity, which relates to the technical field of medium and low pressure valves, and comprises a valve body, a valve rod and a valve core, the valve body is internally provided with a separation layer, the separation layer is internally provided with a through hole, the inner side of the through hole is provided with a sealing ring, and the top of the valve body is provided with an adjusting mechanism; the movable cover is pushed to be inserted into the movable cover through the inserting hole, the movable cover is pushed to rotate on the outer wall of the threaded pipe through the pushing rod, the movable cover is in threaded fit with the threaded pipe, and when the movable cover rotates forwards and backwards, the movable cover can move up and down on the outer wall of the threaded pipe in a reciprocating mode to drive the movable cover to rotate till the movable cover moves to a proper position. And elastic force generated by the spring directly acts on the valve rod through the top cover to change the pressure of the valve rod on the valve element, so that the impact force of water flow is increased or reduced to push the valve element to move upwards, the frequency of pushing the valve element is changed, and the flow speed of fluid can be changed.

Description

TECHNICAL FIELD

[0001] The utility model relates to middle and low pressure valve technical field especially, relates to a middle and low pressure valve of convenient regulation flow rate. BACKGROUND

[0002] Middle and low pressure valve is the key equipment for controlling the flow, pressure and flow direction of fluid medium (such as water, steam, gas, etc.) in industrial pipeline system, and the pressure grade is usually between PN16 and PN40 (about 1.6-4.0MPa), and it is compact in structure, flexible in operation, and is suitable for building, chemical industry, heating, water supply and drainage and other fields, and common types include gate valve, stop valve, ball valve and butterfly valve, and it has the characteristics of good sealing, wear resistance and long service life, and middle and low pressure valve is driven by manual, electric or pneumatic mode, and the flow can be accurately adjusted to ensure the safe and efficient operation of the system.

[0003] The middle and low pressure valve on the market is provided with a valve core and a spring, and the elastic force generated by the spring drives the valve core to move to adjust the flow, and when it is necessary to adjust the fluid flow rate interval, the spring needs to be replaced to change the speed of the valve core movement to achieve the purpose, so that the use is more inconvenient, and the work efficiency is reduced, and in view of this, the utility model provides a middle and low pressure valve for conveniently adjusting flow rate to solve the above problems. UTILITY MODEL CONTENT

[0004] In view of the above problems, the utility model provides a middle and low pressure valve for conveniently adjusting flow rate to solve the problem that in the prior art, when the fluid flow rate interval is adjusted, the spring needs to be replaced to change the speed of the valve core movement to achieve the purpose, so that the use is more inconvenient, and the work efficiency is reduced.

[0005] To achieve the purpose of the utility model, the utility model realizes the following technical scheme: a middle and low pressure valve for conveniently adjusting flow rate, including valve body, valve rod and valve core, the inside of valve body is equipped with valve rod, and the bottom end of valve rod is fixedly connected with valve core, the inside of valve body is equipped with partition layer, the inside of partition layer is equipped with through hole, and the inside of through hole is equipped with sealing ring, the outside of valve core is connected with the inside of sealing ring, and the top of valve body is equipped with adjusting mechanism.

[0006] Further improvement lies in that the adjusting mechanism includes threaded pipe, movable cover, spring, top cover and jack, the top of valve body is threadedly connected with threaded pipe, the outside of threaded pipe is threadedly connected with movable cover, the outside of threaded pipe is sleeved with spring, the top end of valve rod is fixedly connected with top cover, and the outside of movable cover is equidistantly equipped with a plurality of jacks.

[0007] Further improvement lies in that the bottom end of spring is attached to the top of movable cover, the top end of spring is attached to the bottom of top cover, and the inside of jack is inserted with push rod.

[0008] Further improvement lies in that the top of the valve body is fixedly connected with a bottom plate, the two sides of the bottom plate are fixedly connected with threaded rods in a symmetrical mode, the top end of the threaded rod is inserted with a top plate, and the top end of the threaded rod is threadedly connected with two nuts.

[0009] Further improvement lies in that the top of the top plate is fixedly connected with a top seat, the top end of the valve rod penetrates through the top of the top seat, and a limiting sleeve is arranged between the inside of the top seat and the top end of the valve rod.

[0010] Further improvement lies in that the bottom end of the limiting sleeve is inserted into the inside of the top seat, the top end of the limiting sleeve is provided with a stop edge, a plurality of screws are inserted into the inside of the stop edge at equal intervals, and the bottom end of the screw is detachably connected with the inside of the top seat.

[0011] Further improvement lies in that the two ends of the valve body are fixedly connected with flange plates in a symmetrical mode, and a plurality of mounting holes are arranged in the inside of the flange plate at equal intervals.

[0012] The utility model discloses beneficial effects that: through the jack, the inside of the movable cover is inserted, the movable cover is rotated on the outer wall of the threaded pipe through the push rod, the movable cover is threadedly cooperated with the threaded pipe, when the movable cover is positively and reversely rotated, can reciprocate on the outer wall of the threaded pipe, and when the push rod meets the threaded rod interference, can pull out the push rod from the inside of one jack, and insert into another jack to drive the movable cover to rotate until moving to the appropriate position, to change the compression degree of the spring, the elastic force of the spring is directly acted on the valve rod through the top cover, to change the pressure of the valve rod to the valve core, so that the water flow impact force increases or reduces also pushes the valve core to move upwards, to change the frequency of pushing the valve core, can change the fluid flow rate. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 It is the adjusting mechanism structure schematic view of the utility model;

[0015] Figure 3 It is the adjusting mechanism assembly schematic view of the utility model.

[0016] Among them: 1, valve body, 2, valve rod, 3, valve core, 4, separation layer, 5, sealing ring, 6, threaded pipe, 7, movable cover, 8, spring, 9, top cover, 10, jack, 11, bottom plate, 12, top plate, 13, threaded rod, 14, top seat, 15, limiting sleeve. DETAILED DESCRIPTION

[0017] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0018] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a medium-low pressure valve for convenient flow rate adjustment, including a valve body 1, a valve stem 2, and a valve core 3. The valve stem 2 is located inside the valve body 1, and the valve core 3 is fixedly connected to the bottom end of the valve stem 2. The valve body 1 has a partition layer 4 inside, and a through hole is provided inside the partition layer 4. A sealing ring 5 is provided inside the through hole. The outer side of the valve core 3 is fitted and connected to the inner side of the sealing ring 5. An adjustment mechanism is provided on the top of the valve body 1. When the medium-low pressure valve is in use, the fluid enters through the inlet end on the left side of the valve body 1. When the fluid pressure is high, it pushes the valve core 3 upward to leak out of the through hole. The fluid passes through the through hole and is discharged from the outlet end on the right side of the valve body 1. When the flow pressure is normal, the valve core 3 automatically moves downward to reset, and the valve body 1 is in a closed state. The fluid flow rate can be adjusted, and the pressure of the flow on the valve core 3 can be adjusted by the adjustment mechanism. Increasing or decreasing the water flow impact force will also push the valve core 3 upward to change the frequency of pushing the valve core 3, thereby changing the fluid flow rate.

[0019] The adjusting mechanism includes a threaded tube 6, a movable cover 7, a spring 8, a top cover 9, and insertion holes 10. The top of the valve body 1 is threadedly connected to the threaded tube 6, and the movable cover 7 is threadedly connected to the outer side of the threaded tube 6. A spring 8 is sleeved on the outer side of the threaded tube 6. The top of the valve stem 2 is fixedly connected to the top of the valve stem 2. Multiple insertion holes 10 are equidistantly arranged on the outer side of the movable cover 7. The bottom end of the spring 8 fits against the top of the movable cover 7, and the top end of the spring 8 fits against the bottom of the top cover 9. A push rod is inserted into the insertion hole 10, pushing the movable cover 7 into the movable cover 7 through the insertion hole 10. The push rod pushes the movable cover 7 against the threaded tube. The outer wall of 6 rotates, and the movable cover 7 is threadedly engaged with the threaded tube 6. When the movable cover 7 rotates in both directions, it can move back and forth up and down on the outer wall of the threaded tube 6. When the push rod encounters interference from the threaded rod 13, the push rod can be pulled out from the inside of one insertion hole 10 and inserted into another insertion hole 10 to drive the movable cover 7 to rotate until it moves to a suitable position, thereby changing the compression degree of the spring 8. The elastic force generated by the spring 8 acts directly on the valve stem 2 through the top cover 9 to change the pressure of the valve stem 2 on the valve core 3, so that the water flow impact force increases or decreases, which will also push the valve core 3 upward to change the frequency of pushing the valve core 3, thereby changing the fluid flow rate.

[0020] The top of the valve body 1 is fixedly connected with a bottom plate 11, both sides of the bottom plate 11 are symmetrically fixedly connected with threaded rods 13, the top end of the threaded rod 13 is inserted with a top plate 12, two nuts are threadedly connected with the top end of the threaded rod 13, first screw the two nuts into the top end of the two threaded rods 13, then screw the top plate 12 into the top end of the two threaded rods 13, and then tighten the nuts on the top end of the two threaded rods 13, clamp the two sides of the top plate 12 by the two groups of nuts, and fix the top plate 12 on the top end of the valve stem 2.

[0021] The top of the top plate 12 is fixedly connected with a top seat 14, the top end of the valve stem 2 penetrates through the top of the top seat 14, a limiting sleeve 15 is arranged between the inside of the top seat 14 and the top end of the valve stem 2, the bottom end of the limiting sleeve 15 is inserted into the inside of the top seat 14, the top end of the limiting sleeve 15 is provided with a stop edge, a plurality of screws are equidistantly inserted into the inside of the stop edge, the bottom end of the screw is detachably connected with the inside of the top seat 14, the top end of the valve stem 2 penetrates through the top of the top seat 14, the limiting sleeve 15 is sleeved on the top end of the valve stem 2, the bottom end of the limiting sleeve 15 is inserted into the top seat 14, and the stop edge on the top of the limiting sleeve 15 is attached to the top of the top seat 14, the limiting sleeve 15 and the top seat 14 are connected into an integrated whole through the screw, the outer wall of the valve stem 2 is attached to the inner wall of the limiting sleeve 15, the movement track of the valve stem 2 is limited through the limiting sleeve 15, and deviation of the valve stem 2 during movement is avoided.

[0022] Both ends of the valve body 1 are symmetrically fixedly connected with flange plates, a plurality of mounting holes are equidistantly arranged in the inside of the flange plate, after the flange plates of the external pipeline and the flange plates at both ends of the valve body 1 are butted, the position of the pipeline is adjusted so that the mounting holes on the two flange plates are aligned, the stud bolts are inserted into the mounting holes, and the two bolt heads are respectively penetrated through the two flange plates, nuts are tightened on both ends of the stud bolts, the two flange plates are clamped by the nuts, and the external pipeline is connected with the valve body 1.

[0023] The medium-low pressure valve, the push rod pushes the movable cover 7 in the inside of the insertion hole 10, the movable cover 7 is rotated on the outer wall of the threaded pipe 6 through the push rod, the movable cover 7 is threadedly connected with the threaded pipe 6, when the movable cover 7 is reversely rotated, the movable cover 7 can reciprocate on the outer wall of the threaded pipe 6, when the push rod interferes with the threaded rod 13, the push rod can be pulled out from the inside of one insertion hole 10 and inserted into another insertion hole 10 to drive the movable cover 7 to rotate until the movable cover 7 moves to a suitable position, so as to change the compression degree of the spring 8, the elastic force generated by the spring 8 directly acts on the valve stem 2 through the top cover 9, so as to change the pressure of the valve stem 2 on the valve core 3, so that the water flow impact force increases or decreases and the valve core 3 is moved upward, so as to change the frequency of the valve core 3, and the fluid flow rate can be changed.

[0024] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A medium-to-low pressure valve for convenient flow rate adjustment, comprising a valve body (1), a valve stem (2), and a valve core (3), characterized in that: The valve body (1) is provided with a valve stem (2) inside, and a valve core (3) is fixedly connected to the bottom end of the valve stem (2). The valve body (1) is provided with a partition layer (4) inside, and a through hole is provided inside the partition layer (4). A sealing ring (5) is provided inside the through hole. The outer side of the valve core (3) is fitted and connected to the inner side of the sealing ring (5). An adjustment mechanism is provided on the top of the valve body (1). The adjusting mechanism includes a threaded tube (6), a movable cover (7), a spring (8), a top cover (9), and a socket (10). The top of the valve body (1) is threadedly connected to the threaded tube (6), the outer side of the threaded tube (6) is threadedly connected to the movable cover (7), the outer side of the threaded tube (6) is sleeved with the spring (8), the top of the valve stem (2) is fixedly connected to the top cover (9), and multiple sockets (10) are provided at equal intervals on the outer side of the movable cover (7).

2. The medium- and low-pressure valve for convenient flow rate adjustment according to claim 1, characterized in that: The bottom end of the spring (8) is attached to the top of the movable cover (7), the top end of the spring (8) is attached to the bottom of the top cover (9), and a push rod is inserted into the hole (10).

3. A medium-to-low pressure valve for convenient flow rate adjustment according to claim 1, characterized in that: A base plate (11) is fixedly connected to the top of the valve body (1), and threaded rods (13) are symmetrically fixedly connected to both sides of the base plate (11). A top plate (12) is inserted into the top of the threaded rod (13), and two nuts are threadedly connected to the top of the threaded rod (13).

4. A medium-to-low pressure valve for convenient flow rate adjustment according to claim 3, characterized in that: The top plate (12) is fixedly connected to the top seat (14), and the top end of the valve stem (2) extends through the top of the top seat (14). A limiting sleeve (15) is provided between the inside of the top seat (14) and the top end of the valve stem (2).

5. A medium-to-low pressure valve for convenient flow rate adjustment according to claim 4, characterized in that: The bottom end of the limiting sleeve (15) is inserted into the interior of the top seat (14). The top end of the limiting sleeve (15) is provided with a retaining edge. Multiple screws are inserted at equal intervals inside the retaining edge. The bottom end of the screws is detachably connected to the interior of the top seat (14).

6. A medium-to-low pressure valve for convenient flow rate adjustment according to claim 1, characterized in that: The valve body (1) is symmetrically fixedly connected to flanges at both ends, and the flanges are provided with multiple mounting holes at equal intervals inside.

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