CN112324937A

CN112324937A - Piston type flow regulating valve

Info

Publication number: CN112324937A
Application number: CN202011233949.8A
Authority: CN
Inventors: 苏凤霞; 刘天昌; 王月慧
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-07
Filing date: 2020-11-07
Publication date: 2021-02-05

Abstract

The invention relates to a piston-type flow regulating valve, comprising: the valve body, the driving piece, the driving shaft, the first bevel gear, the supporting piece, the rotating shaft, the sleeve, the first hole seat and the second hole seat, and the valve has the advantages that: the invention is provided with a first hole seat and a second hole seat, wherein the first hole seat is provided with a first through hole, the second hole seat is provided with a second through hole, and the size of the communication area between the first through hole and the second through hole can be controlled by controlling the second hole seat to rotate relative to the first hole seat, so that the flow regulation effect is realized; the invention is provided with the cleaning structure, when the flow regulating valve is in the full open position, the cleaning structure can be controlled to work by controlling the driving piece to rotate continuously, each through-flow hole is cleaned, and blockage is prevented.

Description

Piston type flow regulating valve

Technical Field

The invention relates to the technical field of flow regulating valves, in particular to a piston type flow regulating valve.

Background

The flow regulating valve has high regulating precision, small cavitation, noise and vibration, good energy dissipation effect, ideal flow-opening curve, convenient realization of automatic control and wide application in a plurality of large-scale water delivery projects. The main functions of the flow regulating valve are expressed in three aspects of energy dissipation, flow regulation and emergency treatment. Firstly, the energy dissipation effect, the operation in-process, rivers pass through the flow regulating valve, at the exit collision energy dissipation, and water kinetic energy subducts to zero basically to make the water flow state in the pipeline of low reaches more steady, the operation is safer. The flow regulating valve in the prior art has the following technical problems:

1. the adjusting function of the flow adjusting valve in the prior art is realized by moving a piston-like sliding sleeve in the valve cavity along the axial direction (water flow direction) so as to change the throttling area of a throttling hole on a first hole seat to control the valve outlet area of water flow;

2. when the flow regulating valve in the prior art is used for a long time, the throttling hole in the first hole seat is easily blocked by impurities and garbage, so that the adjusting performance is influenced.

Disclosure of Invention

In view of the above, there is a need to provide a piston type flow regulating valve with compact volume and anti-blocking function.

The invention discloses a piston type flow regulating valve, which comprises:

the valve body is provided with a middle cavity, an inlet flow channel and an outlet flow channel which are communicated with the middle cavity, a mounting seat is arranged in the valve body, a mounting column is arranged on the mounting seat, and the mounting column and the outlet flow channel are coaxially arranged;

the driving piece is fixedly arranged at the upper end of the valve body;

the driving shaft penetrates through the valve body and can rotate under the driving of the driving piece;

the first bevel gear is fixedly arranged at the lower end of the driving shaft;

the supporting piece is fixedly connected to the center of the mounting column and extends towards the outlet flow channel;

the rotating shaft is sleeved on the supporting piece and can rotate relative to the supporting piece;

the sleeve is sleeved on the rotating shaft, a second bevel gear is arranged on the outer ring of the sleeve, and the second bevel gear is meshed with the first bevel gear;

the first hole seat is sleeved on the rotating shaft, and a plurality of first through holes are formed in the side wall of the first hole seat;

the second hole seat is sleeved on the first hole seat, a plurality of second through holes are formed in the side wall of the second hole seat, the second through holes can be communicated with the first through holes in a one-to-one correspondence mode by rotating the first hole seat, and therefore the middle cavity is communicated with the outlet flow channel,

the sleeve is provided with a clamping hole, the first hole seat is provided with a first clamping groove corresponding to the clamping hole, and the clamping hole is provided with a clamping small ball in the first clamping groove, so that the sleeve is connected with the first hole seat, and the driving piece can drive the sleeve to rotate so as to drive the first hole seat to rotate.

In one of them embodiment, be provided with the stopper on the valve body, the arc wall has been seted up on the first hole seat, along with first hole seat is rotatory, the stopper can be followed the arc wall slides, works as when the stopper is in the first end of arc wall, first through-flow hole and second through-flow hole do not communicate, works as when the stopper is in the second end of arc wall, first through-flow hole and second through-flow hole communicate.

In one embodiment, the rotating shaft is provided with a second clamping groove, and the clamping ball can enter the clamping hole and the second clamping groove, so that the rotating shaft is connected with the sleeve.

In one embodiment, when the limiting block is located at the second end of the arc-shaped groove, the clamping ball can leave the first clamping groove and enter the second clamping groove, so that the rotating shaft is fixed with the sleeve, and the sleeve and the first hole seat can rotate relatively.

In one embodiment, a circular tool rest is arranged at one end, far away from the mounting column, of the support, a plurality of tool rest sliding grooves are radially formed in the circular tool rest in a one-to-one correspondence with the second through-flow holes, a dredging knife is slidably arranged in each tool rest sliding groove, a control slider is arranged on each dredging knife, a drive plate is arranged at one end, far away from the mounting column, of the rotating shaft, a plurality of arc-shaped sliding grooves are arranged on the drive plate in a one-to-one correspondence with the tool rest sliding grooves, the control sliders are arranged in the arc-shaped sliding grooves in a one-to-one correspondence, and the control sliders can slide along the arc-shaped sliding grooves by controlling rotation of the rotating shaft, so that the dredging knives are controlled to slide along the tool rest sliding grooves to dredge the first through-flow holes.

In one embodiment, four tool rest sliding grooves are uniformly radially arranged on the circular tool rest, and four arc-shaped sliding grooves are arranged on the rotating shaft and correspond to the tool rest sliding grooves.

In one embodiment, a clamping component is arranged on the mounting column, a third clamping groove is formed in the rotating shaft, the clamping component can be matched with the third clamping groove, so that the rotating shaft is fixed with the mounting column, and when the driving force applied to the rotating shaft is greater than a preset value, the clamping component can be separated from the third clamping groove, so that the rotating shaft can rotate relative to the mounting column.

In one embodiment, the clamping assembly comprises a limiting ball and an elastic piece arranged between the limiting ball and the mounting column.

In one embodiment, a connecting seat is disposed in the outlet flow passage, one end of the second hole seat abuts against the mounting seat, and the other end of the second hole seat abuts against the connecting seat.

Compared with the prior art, the invention has the advantages that:

1. the valve is provided with the first hole seat and the second hole seat, the first through hole is arranged on the first hole seat, the second through hole is arranged on the second hole seat, and the size of the communication area between the first through hole and the second through hole can be controlled by controlling the second hole seat to rotate relative to the first hole seat, so that the flow adjusting effect is achieved;

2. the rotating shaft is controlled to rotate by the driving part, and the rotating shaft does not move up and down relative to the radial direction of the valve body, so that compared with the prior art, the diameter of the valve body can be reduced, and the valve body is more compact;

3. the dredging cutter capable of cleaning the first through-flow hole and the second through-flow hole is arranged, when the flow adjusting valve is in the fully-open position, the driving piece is controlled to rotate continuously to control the dredging cutter to work, each through-flow hole is cleaned, blockage is prevented, and compared with the prior art, the dredging cutter capable of cleaning the through-flow holes without disassembling the valve is quite convenient.

Drawings

FIG. 1 is a sectional structure view of a piston type flow regulating valve provided by the invention when closed;

FIG. 2 is a sectional view of A-A in FIG. 1;

FIG. 3 is a sectional view of B-B in FIG. 1;

FIG. 4 is a sectional view of C-C in FIG. 1;

FIG. 5 is a sectional view of D-D in FIG. 1;

FIG. 6 is a cross-sectional view of a piston type flow regulating valve of the present invention when fully open;

FIG. 7 is a sectional view taken along line A-A in FIG. 6;

FIG. 8 is a sectional view of B-B in FIG. 6;

FIG. 9 is a sectional view of C-C in FIG. 6;

FIG. 10 is a sectional view of D-D in FIG. 6;

FIG. 11 is a cross-sectional view of the present invention illustrating the cleaning of the through-flow holes;

FIG. 12 is a sectional view taken along line A-A in FIG. 11;

FIG. 13 is a sectional view of B-B in FIG. 11;

FIG. 14 is a sectional view of C-C in FIG. 11;

FIG. 15 is a sectional view of D-D in FIG. 11;

fig. 16 is a three-dimensional structure view of the dredging knife of the present invention.

In the figure, a valve body 1, a middle cavity 11, an inlet flow passage 12, an outlet flow passage 13, a mounting seat 14, a mounting column 15, a limiting block 16, a connecting seat 17, a limiting ball 171, an elastic part 172, a driving part 21, a driving shaft 22, a first bevel gear 23, a supporting part 3, a circular tool holder 31, a tool holder sliding groove 311, a dredging tool 32, a control slider 321, a guide block 322, a rotating shaft 4, a second clamping groove 41, a dial 42, an arc-shaped sliding groove 421, a third clamping groove 43, a sleeve 5, a second bevel gear 51, a clamping hole 52, a first hole seat 6, a first through-flow hole 61, a first clamping groove 62, a clamping small ball 63, an arc-shaped groove 64, a second hole seat 7 and a second through-flow hole 71.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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 given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

The invention discloses a piston type flow regulating valve, as shown in figures 1, 6 and 11, the piston type flow regulating valve comprises:

the valve comprises a valve body 1, a valve body and a valve body, wherein the valve body 1 is provided with a middle cavity 11, and an inlet flow passage 12 and an outlet flow passage 13 which are communicated with the middle cavity 11, a mounting seat 14 is arranged in the valve body 1, a mounting column 15 is arranged on the mounting seat 14, and the mounting column 15 and the outlet flow passage 13 are coaxially arranged;

a driving member 21 fixedly disposed at an upper end of the valve body 1, in this embodiment, the driving member 21 is a stepping motor;

a drive shaft 22 inserted into the valve body 1 and capable of rotating by the drive of the drive member 21;

a first bevel gear 23 fixedly provided at a lower end of the driving shaft 22;

the supporting piece 3 is fixedly connected to the center of the mounting column 15 and extends towards the outlet flow channel 13;

the rotating shaft 4 is sleeved on the support 3 and can rotate relative to the support 3;

the sleeve 5 is sleeved on the rotating shaft 4, a second bevel gear 51 is arranged on the outer ring of the sleeve 5, and the second bevel gear 51 is meshed with the first bevel gear 23;

the first hole seat 6 is sleeved on the rotating shaft 4, and a plurality of first through holes 61 are formed in the side wall of the first hole seat 6;

the second hole seat 7 is sleeved on the first hole seat 6, a plurality of second through holes 71 are formed in the side wall of the second hole seat 7, the second through holes 71 can be communicated with the first through holes 61 in a one-to-one correspondence manner by rotating the first hole seat 6, so that the middle cavity 11 is communicated with the outlet flow passage 13,

the last joint hole 52 of having seted up of sleeve 5, correspond on the first hole seat 6 first joint groove 62 has been seted up to joint hole 52, joint hole 52 with be provided with joint bobble 63 in the first joint groove 62, thereby make sleeve 5 with first hole seat 6 is connected, thereby driving piece 21 can drive sleeve 5 is rotatory to be driven first hole seat 6 is rotatory.

Preferably, the valve body 1 is provided with a limit block 16, the first hole seat 6 is provided with an arc-shaped groove 64, the first hole seat 6 rotates, the limit block 16 can slide along the arc-shaped groove 64, when the limit block 16 is located at the first end of the arc-shaped groove 64, the first through-flow hole 61 is not communicated with the second through-flow hole 71, and when the limit block 16 is located at the second end of the arc-shaped groove 64, the first through-flow hole 61 is communicated with the second through-flow hole 71.

Preferably, a second clamping groove 41 is formed in the rotating shaft 4, and the clamping ball 63 can enter the clamping hole 52 and the second clamping groove 41, so that the rotating shaft 4 is connected with the sleeve 5.

Preferably, when the limiting block 16 is located at the second end of the arc-shaped groove 64, the clamping ball 63 can leave the first clamping groove 62 and enter the second clamping groove 41, so that the rotating shaft 4 and the sleeve 5 are fixed, and the sleeve 5 and the first hole seat 6 can rotate relatively.

Preferably, as shown in fig. 16, a circular tool holder 31 is provided at one end of the supporting member 3 away from the mounting post 15, a plurality of tool rest sliding grooves 311 are radially arranged on the circular tool rest 31 in a one-to-one correspondence with the second through holes 71, a dredging knife 32 is slidably connected in each tool rest sliding groove 311, a control sliding block 321 is arranged on each dredging knife 32, a driving plate 42 is arranged at one end of the rotating shaft 4 far away from the mounting column 15, a plurality of arc-shaped sliding grooves 421 are arranged on the driving plate 42 in one-to-one correspondence with the tool holder sliding grooves 311, the control sliding blocks 321 are arranged in the arc-shaped sliding grooves 421 in one-to-one correspondence, the control slide block 321 can slide along the arc chute 421 by controlling the rotation of the rotating shaft 4, thereby controlling the dredging knife 32 to slide along the knife rest slide groove 311 to dredge the first through-flow hole 61 and the second through-flow hole 71.

Preferably, the dredging knife 32 is provided with a guide block 322 which is matched with the knife rest sliding groove 311.

Preferably, four tool rest sliding grooves 311 are uniformly radially arranged on the circular tool rest 31, and four arc-shaped sliding grooves 421 are arranged on the rotating shaft 4 and correspond to the tool rest sliding grooves 311.

Preferably, be provided with the joint subassembly on the erection column 15, third joint groove 43 has been seted up on the pivot 4, the joint subassembly can with the cooperation of third joint groove 43, thereby make pivot 4 with the erection column 15 is fixed, works as when the drive power that pivot 4 received is greater than the default, the joint subassembly can break away from third joint groove 43, thereby makes pivot 4 can for the erection column 15 is rotatory.

Preferably, the clamping assembly includes a limiting ball 171 and an elastic member 172 disposed between the limiting ball 171 and the mounting post 15.

It can be understood that the limiting ball 171 can be clamped into the third clamping groove 43, so that the rotating shaft 4 and the mounting column 15 are fixedly connected, when the driving force received by the rotating shaft 4 can extrude the elastic part 172 to push the limiting ball 171 out of the third clamping groove 43, the clamping component is separated from the third clamping groove 43, namely, when the clamping small ball 63 is located in the first clamping groove 62, the rotating shaft 4 can keep a static state.

Preferably, a connecting seat 17 is disposed in the outlet flow channel 13, one end of the second hole seat 7 abuts against the mounting seat 14, and the other end abuts against the connecting seat 17.

The working mode of the invention is as follows: the invention controls the medium flow quantity between the inlet flow channel 12 and the outlet flow channel 13 by controlling the corresponding relation between the first through hole 61 on the first hole seat 6 and the second through hole 71 on the second hole seat 7, and controls the expansion and contraction of the dredging knife 32 to dredge the first through hole 61 and the second through hole 71.

Specifically, as shown in fig. 1 to 5, the first through-flow hole 61 and the second through-flow hole 71 are in a dislocated state, the middle cavity 11 is not communicated with the outlet flow channel 13, and the clamping small ball 63 is located in the first clamping groove 62 and the clamping hole 52, so that the first hole seat 6 is fixedly connected with the sleeve 5, and when the driving member 21 drives the first bevel gear 23 to rotate in the forward direction, the first hole seat 6 can be driven to rotate in the forward direction, so that the limiting block 16 moves from the first end to the second end of the arc-shaped groove 64. At this time, as shown in fig. 6 to 10, the first through-flow hole 61 and the second through-flow hole 71 are in a communicating state, and the middle chamber 11 and the outlet flow passage 13 communicate. By controlling the opening and closing of the piston type flow control valve, the flow rate can be controlled by controlling the degree of overlap between the first through-hole 61 and the second through-hole 71.

After a period of use, when sludge is formed in the first through-flow hole 61 and the second through-flow hole 71, it is necessary to dredge with the dredging knife 32, as shown in fig. 6 to fig. 15, when the state of fig. 6 is, that is, when the state of communication between the first through-flow hole 61 and the second through-flow hole 71 is reached, the first bevel gear 23 is continuously driven to rotate in the forward direction, at this time, the clamping hole 52 corresponds to the second clamping groove 41, and the stopper 16 is located at the second end of the arc-shaped groove 64 and cannot rotate in the forward direction, so that the first clamping groove 62 pushes the clamping small ball 63 into the second clamping groove 41, so that the sleeve 5 is clamped with the rotating shaft 4, and by continuously driving the sleeve 5 to rotate, the rotating shaft 4 can be driven to rotate, so that the control slider 321 can slide along the arc-shaped sliding groove 421, so that the dredging knife 32 can slide along the knife rest sliding groove 311, and extend into the first through-flow hole 61 and the second through, so that the dredging knife 32 can be repeatedly extended and retracted to thoroughly clean the first and second through-flow holes 61 and 71.

After cleaning, the first bevel gear 23 is reversely driven, the dredging cutter 32 is retracted into the cutter frame sliding groove 311, the first bevel gear 23 is continuously reversely rotated, the clamping small ball 63 is pushed into the first clamping groove 62 through the second clamping groove 41, the sleeve 5 is clamped with the first hole seat 6, the first hole seat 6 is driven to reversely rotate, the limiting block 16 moves to the first end from the second end of the arc-shaped groove 64, the first through flow hole 61 and the second through flow hole 71 are staggered, and the middle cavity 11 and the outlet flow channel 13 are blocked.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A piston type flow regulating valve, characterized in that said piston type flow regulating valve comprises:

the driving piece is fixedly arranged at the upper end of the valve body;

the first bevel gear is fixedly arranged at the lower end of the driving shaft;

2. The piston type flow regulating valve as claimed in claim 1, wherein the valve body is provided with a stopper, the first hole seat is provided with an arc-shaped groove, the stopper can slide along the arc-shaped groove as the first hole seat rotates, the first through-flow hole is not communicated with the second through-flow hole when the stopper is located at a first end of the arc-shaped groove, and the first through-flow hole is communicated with the second through-flow hole when the stopper is located at a second end of the arc-shaped groove.

3. The piston type flow regulating valve as claimed in claim 2, wherein the rotating shaft is provided with a second clamping groove, and the clamping ball can enter the clamping hole and the second clamping groove, so that the rotating shaft is connected with the sleeve.

4. The piston type flow regulating valve as claimed in claim 3, wherein when the stop block is located at the second end of the arc-shaped groove, the snap-fit ball can leave the first snap-fit groove and enter the second snap-fit groove, thereby fixing the rotating shaft and the sleeve and enabling the sleeve and the first hole seat to rotate relatively.

5. The piston choke valve according to claim 4, characterized in that a circular tool holder is arranged on the support at the end remote from the mounting post, a plurality of tool rest chutes are radially arranged on the circular tool rest in a one-to-one correspondence with the second through holes, a dredging knife is slidably arranged in each tool rest chute, a control slide block is arranged on each dredging knife, a driving plate is arranged at one end of the rotating shaft far away from the mounting column, a plurality of arc-shaped sliding grooves are arranged on the driving plate in one-to-one correspondence with the tool rest sliding grooves, the control sliding blocks are arranged in the arc-shaped sliding grooves in one-to-one correspondence, the control slide block can slide along the arc-shaped sliding groove by controlling the rotation of the rotating shaft, thereby controlling the dredging knife to slide along the knife rest sliding groove so as to dredge the first through-flow hole and the second through-flow hole.

6. The piston type flow regulating valve as claimed in claim 5, wherein four tool rest chutes are uniformly radially arranged on the circular tool rest, and four arc chutes are arranged on the rotating shaft corresponding to the tool rest chutes.

7. The piston type flow regulating valve according to claim 1, wherein a clamping assembly is arranged on the mounting column, a third clamping groove is formed in the rotating shaft, the clamping assembly can be matched with the third clamping groove, so that the rotating shaft and the mounting column are fixed, and when a driving force applied to the rotating shaft is larger than a preset value, the clamping assembly can be separated from the third clamping groove, so that the rotating shaft can rotate relative to the mounting column.

8. The piston type flow regulating valve as recited in claim 7, wherein said snap assembly comprises a stop ball and a resilient member disposed between said stop ball and said mounting post.

9. The piston type flow regulating valve as claimed in claim 1, wherein a connecting seat is provided in the outlet flow passage, one end of the second bore seat abuts against the mounting seat and the other end abuts against the connecting seat.