CN220646779U

CN220646779U - Dynamic flow control valve with flow preset function

Info

Publication number: CN220646779U
Application number: CN202320549901.0U
Authority: CN
Inventors: 权凌霄
Original assignee: Yanshan University
Current assignee: Yanshan University
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2024-03-22
Anticipated expiration: 2033-03-21

Abstract

The utility model relates to the technical field of flow control valves, in particular to a dynamic flow control valve with a flow preset function. The technical proposal comprises: the valve body assembly comprises a valve body assembly, a first valve assembly and a second valve assembly, wherein a measuring assembly is arranged on the outer wall of one side of the valve body assembly, the valve body assembly comprises the first valve assembly and the second valve assembly, the valve body assembly further comprises a valve seat with an opening, the valve body is fixedly arranged on a sleeve with the opening, a valve plug is arranged in the first valve assembly, a first valve rod capable of axially moving in the axial direction is arranged in the valve plug, a fluid assembling device is arranged outside the valve seat, and a preset knob is arranged at the upper end of the first valve assembly. The effective stroke of the valve is not changed by presetting the flow, so that the valve has good regulation performance.

Description

Dynamic flow control valve with flow preset function

Technical Field

The utility model relates to the technical field of flow control valves, in particular to a dynamic flow control valve with a flow preset function.

Background

The serious hydraulic unbalance phenomenon often occurs in the heating ventilation air conditioning water system, so that the problems of poor system operation effect and high energy consumption are directly caused. In this regard, the usual solution is mainly to make hydraulic balance calculations in the design to reduce or eliminate hydraulic disturbances as much as possible. However, for a number of reasons, the system in most cases has a disturbance that the proximal drag coefficient does not reach the desired design and the proximal flow is excessive and the distal flow is insufficient. If it is desired to achieve the overall hydraulic balance of the system, the proper use of static and dynamic balance valves in the system for hydraulic balance adjustment is currently the most cost-effective solution, since dynamic flow balance valves can automatically act to change the drag coefficient according to changes in system operating conditions (fluid pressure differential) without the aid of external energy sources.

The utility model discloses a dynamic balance electric regulating valve, which belongs to a flow control valve and solves the technical problems of complex structure, control precision and small application range of the traditional dynamic balance valve. The embodiment of the utility model is applied to a waterway pipe network system of heating and air conditioning.

In the using process of the prior art CN102927324B, although the advantages are more, the following problems still exist, and the dynamic flow balance valve in the prior art has two types; one is a fixed flow balance valve, the other is an adjustable flow balance valve. The flow rate of each valve of the fixed flow balance valve is fixed and cannot be adjusted. It has the following drawbacks. 1. When the cold and hot load of the heating ventilation air conditioning water system changes in use, the system flow needs to be debugged again, and the valve cannot adjust the flow on line; 2. the valve flow rate is specially customized in factories and cannot be adjusted on site, so that if the valve flow rate needs to be changed on site, only new products can be purchased; 3. because of the seasonal temperature difference, the fluid flow requirement is generally changed, and the flow of the two-pipe fan coil system is generally required to be switched in winter and summer, however, the fixed flow type dynamic valve liner cannot meet the requirement. The current market flow-adjustable balance valve has the following defects that 1, for a dynamic flow balance valve with the valve seat stroke adjusted by adjusting the valve, a similar valve actuator causes no flow change of the valve in a section of control signal range when driving the valve due to the change of the valve opening and closing stroke, so that the control performance of the valve is very poor. 2. There are two disadvantages to a dynamic flow balance valve with an axially rotating flow resistor added to the valve seat. One relies on the rotation of the valve stem to actuate the flow resistor to preset the flow, and the valve stem is changed because the preset flow is easily rotated by the reciprocating pushing of the valve actuator. And secondly, the flow resistor is easy to break when preset.

Disclosure of Invention

The present utility model is directed to a dynamic flow control valve with a flow preset function, so as to solve the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a dynamic flow control valve with flow presets function, includes valve body subassembly, first valve subassembly and second valve subassembly, valve body subassembly one side outer wall is provided with the measurement subassembly, valve body subassembly is including first valve subassembly and second valve subassembly, valve body subassembly is still including having the open-ended disk seat for taking the fixed valve body that sets up of open-ended sleeve pipe, first valve subassembly is located inside the disk seat, and the inside valve plug that is provided with of first valve subassembly, the inside first valve rod that can carry out axial motion in the axial that is provided with of valve plug, the aperture size of disk seat can be adjusted in the axial to first valve rod, the disk seat outside is provided with the group flow ware, first valve subassembly upper end is provided with and presets the knob, the group flow ware can be through preseting the knob drive in radial direction and do rotary motion to adjust disk seat open-ended size, second valve subassembly is including piston body and piston sleeve, and piston body and piston sleeve inlay through the sawtooth structure, second valve member is including the second valve gap.

When the dynamic flow control valve with the flow preset function in the technical scheme is used, after the valve flow is preset, the circular bulge on the preset knob and the concave part on the digital display can be locked through the spring force, when the self-locking position can be separated through the external force rotation force, the digital display is provided with the scale value, the corresponding relation between the scale indication mark of the knob and the digital display can be displayed, and the preset constant flow point can be displayed.

Preferably, the valve seat is fixedly connected with the valve body, the valve seat adopts a sleeve structural design with openings at two ends, the upper end in the middle of the sleeve is provided with an opening, and the angle formed by the two sections of the opening and the center of the sleeve is between the degree and the degree.

Preferably, the flow combining device is also provided with an opening, the angle formed by the opening and the center of the flow combining device is between degrees, and the valve seat and the flow combining device form a window with adjustable size.

Preferably, the valve plug is provided with a through hole, and a sealing element is inlaid on the valve plug.

Preferably, the flow combining device is slidably connected with the preset knob and is driven to rotate by the preset knob.

Preferably, the valve plug is fixedly connected with the first valve rod, and is driven to do linear motion through the first valve rod.

Preferably, the outer wall of one side of the flow combining device is provided with a first valve cover, one side of the outer wall of the upper end of the first valve assembly is provided with a valve cap, the valve cap is provided with threads, the threads can be connected with a valve actuator, and the threads can be connected with a manual valve cap to automatically or manually drive the first valve rod to drive the valve cap to move.

Preferably, the second valve cover further comprises a second valve rod, a piston body is arranged on the outer wall of the second valve rod, and a diaphragm is arranged on the outer wall of the piston body.

Preferably, a piston sleeve is arranged on the outer wall of the upper end of the piston body, the piston sleeve is in a stepped design, a diaphragm is fixed between the piston body and the piston sleeve through welding, and the diaphragm can balance pressure difference in the valve body;

the piston body is fixedly connected with the second valve cover through the second valve rod, the valve body is divided into an upper part and a lower part through the diaphragm, the second valve rod is provided with a clamp spring, a spring is arranged between the clamp spring and the piston body, the second valve cover is sealed with the valve body through a sealing ring, and the second valve cover is fixedly connected with the valve body through threads or riveting.

Preferably, the outer wall at one side of the preset knob is provided with a digital display, the digital display is provided with a scale indication mark, the preset knob is provided with a limit circular protrusion, the digital display is provided with a circular limit step corresponding to the preset knob, after the valve flow is preset, the valve flow can be locked through the circular protrusion on the preset knob and the concave-up type digital display through spring force, when the self-locking position can be disengaged through external force rotation force, the digital display is provided with a scale value, the scale indication mark of the knob corresponds to the digital display, and a preset constant flow point can be displayed.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the effect of controlling the flow is achieved through the preset knob and the digital display, and the flow can be preset in a certain range through the preset knob. The effective stroke of the valve is not changed by presetting the flow, so that the valve has good regulation performance.

2. According to the utility model, the effect of changing the flow is achieved by arranging the preset knob, the first valve rod and the second valve rod, and the preset mechanism is relatively independent from the first valve rod and the second valve rod respectively, so that the preset mechanism is not peristaltic due to the movement of the first valve rod or the second valve rod valve, and the preset flow is changed. The mechanism ensures high reliability and flow setting precision after long-time use.

3. According to the utility model, the valve plug is arranged, so that the effect of improving the sealing performance of the valve is achieved, the valve is provided with the pressure compensation function by opening the hole in the valve plug, and the valve can be sealed by a small driving force required by valve opening and closing.

4. According to the utility model, the piston body and the piston sleeve are arranged, so that the effect of prolonging the service life is achieved, and the piston sleeve are inlaid through the saw-tooth structure. The dynamic flow balance valve piston has reliable connection and sealing effects, high reliability and long service life.

Drawings

FIG. 1 is a schematic cross-sectional view of a valve body assembly of the present utility model.

In the figure: 110. a valve body assembly; 111. a valve body; 112. a valve seat; 113. a measurement assembly; 120. a first valve assembly; 121. a valve plug; 122. a flow combiner; 123. a first valve stem; 124. a digital display; 125. presetting a knob; 126. a seal; 127. a first valve cover; 128. a valve cap; 130. a second valve assembly; 131. a second valve cover; 132. a second valve stem; 133. a membrane; 134. a piston body; 135. a piston sleeve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, two embodiments of the present utility model are provided:

embodiment one: the utility model provides a dynamic flow control valve with flow presets function, including valve body subassembly 110, first valve subassembly 120 and second valve subassembly 130, valve body subassembly 110 one side outer wall is provided with measuring subassembly 113, valve body subassembly 110 is including first valve subassembly 120 and second valve subassembly 130, valve body subassembly 110 is including having the disk seat 112 of opening for the fixed valve body 111 that sets up of sleeve pipe that has the opening, first valve subassembly 120 is located disk seat 112 inside, and first valve subassembly 120 inside is provided with valve plug 121, valve plug 121 inside is provided with the first valve rod 123 that can axial motion in the axial, first valve rod 123 can adjust the aperture size of disk seat 112 in the axial, the disk seat 112 outside is provided with the mass flow ware 122, first valve subassembly 120 upper end is provided with predetermine knob 125, mass flow ware 122 can drive through predetermine knob 125 in the radial direction and make rotary motion, thereby the disk seat 112 open size is adjusted in the radial direction, second valve subassembly 130 includes piston body 134 and piston sleeve 135, and piston body 134 and piston sleeve 135 inlay through the sawtooth structure, second valve subassembly 130 includes second valve gap 131.

The valve seat 112 is fixedly connected with the valve body 111, the valve seat 112 adopts a sleeve structure design with two open ends, the upper end in the middle of the sleeve is provided with an opening, and the angle formed by the two sections of the opening and the center of the sleeve is between 150 degrees and 210 degrees.

The flow combiner 122 also has an opening formed therein at an angle between 150 degrees and 210 degrees from the center of the flow combiner 122, and the valve seat 112 and the flow combiner 122 form a window of adjustable size.

Through holes are formed in the valve plug 121, and a sealing member 126 is embedded in the valve plug 121.

The flow combining device 122 is in sliding connection with the preset knob 125, and rotates through the drive of the preset knob 125, a digital display 124 is arranged on the outer wall of one side of the preset knob 125, a scale indication mark is arranged on the digital display 124, a limit circular protrusion is arranged on the preset knob 125, a circular limit step corresponding to the preset knob 125 is arranged on the digital display 124, after the valve flow is preset, locking can be generated through the circular protrusion on the preset knob 125 and the concave type on the digital display 124 through spring force, when the self-locking position can be separated through the external force rotation force, a scale value is arranged on the digital display 124, and the scale indication mark of the knob corresponds to the digital display 124, so that a preset constant flow point can be displayed.

The valve plug 121 is fixedly connected with the first valve rod 123, and is driven to move linearly through the first valve rod 123.

The outer wall of one side of the flow combining device 122 is provided with a first valve cover 127, one side of the outer wall of the upper end of the first valve assembly 120 is provided with a valve cap 128, threads are arranged on the valve cap 128, the threads can be connected with a valve actuator, and the threads can be connected with a manual valve cap 128 to automatically or manually drive the first valve rod 123 to drive the valve cap 128 to move.

Embodiment two: the utility model provides a dynamic flow control valve with flow presets function, including valve body subassembly 110, first valve subassembly 120 and second valve subassembly 130, valve body subassembly 110 one side outer wall is provided with measuring subassembly 113, valve body subassembly 110 is including first valve subassembly 120 and second valve subassembly 130, valve body subassembly 110 is including having the disk seat 112 of opening for the fixed valve body 111 that sets up of sleeve pipe that has the opening, first valve subassembly 120 is located disk seat 112 inside, and first valve subassembly 120 inside is provided with valve plug 121, valve plug 121 inside is provided with the first valve rod 123 that can axial motion in the axial, first valve rod 123 can adjust the aperture size of disk seat 112 in the axial, the disk seat 112 outside is provided with the mass flow ware 122, first valve subassembly 120 upper end is provided with predetermine knob 125, mass flow ware 122 can drive through predetermine knob 125 in the radial direction and make rotary motion, thereby the disk seat 112 open size is adjusted in the radial direction, second valve subassembly 130 includes piston body 134 and piston sleeve 135, and piston body 134 and piston sleeve 135 inlay through the sawtooth structure, second valve subassembly 130 includes second valve gap 131.

The second valve cover 131 further comprises a second valve rod 132, a piston body 134 is arranged on the outer wall of the second valve rod 132, and a diaphragm 133 is arranged on the outer wall of the piston body 134.

The piston sleeve 135 is arranged on the outer wall of the upper end of the piston body 134, the piston sleeve 135 is in a stepped design, the diaphragm 133 is fixed between the piston body 134 and the piston sleeve 135 through welding, and the diaphragm 133 can balance the pressure difference in the valve body 111;

the piston body 134 is fixedly connected with the second valve cover 131 through the second valve rod 132, the valve body 111 is divided into an upper part and a lower part through the diaphragm 133, a clamp spring is arranged on the second valve rod 132, a spring is arranged between the clamp spring and the piston body 134, and the second valve cover 131 is sealed with the valve body 111 by adopting a sealing ring and is fixedly connected through threads or riveting.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which 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.

Claims

1. A dynamic flow control valve with flow presettingfunction, comprising a valve body assembly (110), a first valve assembly (120) and a second valve assembly (130), characterized in that: valve body subassembly (110) one side outer wall is provided with measurement subassembly (113), valve body subassembly (110) are including first valve subassembly (120) and second valve subassembly (130), valve body subassembly (110) are still including having open-ended disk seat (112) to have the fixed valve body (111) that set up of open-ended sleeve pipe, first valve subassembly (120) are located disk seat (112) inside, and first valve subassembly (120) inside is provided with valve plug (121), valve plug (121) inside is provided with first valve rod (123) that can carry out axial motion in the axial, first valve rod (123) can be in the aperture size of axial regulation disk seat (112), disk seat (112) outside is provided with and organizes the flow ware (122), first valve subassembly (120) upper end is provided with predetermines knob (125), group flow ware (122) can be through predetermineeing (125) drive rotary motion in radial direction to adjust disk seat (112) open-ended size, second valve subassembly (130) are including piston body (135) and second valve cover (135) and piston sleeve (131), piston assembly (134) are including piston sleeve (130).

2. A dynamic flow control valve with flow presetter function according to claim 1, characterized in that: the valve seat (112) is fixedly connected with the valve body (111), the valve seat (112) adopts a sleeve structure design with openings at two ends, an opening is arranged at the upper end in the middle of the sleeve, and an angle formed by two sections of the opening and the center of the sleeve is between 150 degrees and 210 degrees.

3. A dynamic flow control valve with flow presetter function according to claim 1, characterized in that: the flow combining device (122) is also provided with an opening, the angle formed by the opening and the center of the flow combining device (122) is between 150 degrees and 210 degrees, and the valve seat (112) and the flow combining device (122) form a window with adjustable size.

4. A dynamic flow control valve with flow presetter function according to claim 1, characterized in that: the valve plug (121) is provided with a through hole, and meanwhile, the valve plug (121) is embedded with a sealing piece (126).

5. A dynamic flow control valve with flow presetter function according to claim 1, characterized in that: the flow combining device (122) is connected with the preset knob (125) in a sliding way, and is driven to rotate by the preset knob (125).

6. A dynamic flow control valve with flow presetter function according to claim 1, characterized in that: the valve plug (121) is fixedly connected with the first valve rod (123), and is driven to do linear motion through the first valve rod (123).

7. A dynamic flow control valve with flow presetter function according to claim 1, characterized in that: the outer wall of one side of the flow combining device (122) is provided with a first valve cover (127), one side of the outer wall of the upper end of the first valve assembly (120) is provided with a valve cap (128), the valve cap (128) is provided with threads, the threads can be connected with a valve actuator, and the threads can be connected with a manual valve cap (128), so that the valve cap (128) can be driven to move by automatically or manually driving the first valve rod (123).

8. A dynamic flow control valve with flow presetter function according to claim 1, characterized in that: the second valve cover (131) further comprises a second valve rod (132), a piston body (134) is arranged on the outer wall of the second valve rod (132), and a diaphragm (133) is arranged on the outer wall of the piston body (134).

9. A dynamic flow control valve with flow presetter function according to claim 8, characterized in that: the outer wall of the upper end of the piston body (134) is provided with a piston sleeve (135), the piston sleeve (135) is designed in a stepped mode, a diaphragm (133) is fixed between the piston body (134) and the piston sleeve (135) through welding, and the diaphragm (133) can balance pressure difference in the valve body (111);

the piston body (134) is fixedly connected with the second valve cover (131) through the second valve rod (132), the valve body (111) is divided into an upper part and a lower part through the diaphragm (133), the second valve rod (132) is provided with a clamp spring, a spring is arranged between the clamp spring and the piston body (134), and the second valve cover (131) is sealed with the valve body (111) by a sealing ring and is fixedly connected through threads or riveting.

10. A dynamic flow control valve with flow presetter function according to claim 1, characterized in that: the digital display device is characterized in that a digital display (124) is arranged on the outer wall of one side of the preset knob (125), a scale indication mark is arranged on the digital display (124), a limit circular protrusion is arranged on the preset knob (125), a circular limit step corresponding to the preset knob (125) is arranged on the digital display (124), after the valve flow is preset, locking can be generated through spring force through the circular protrusion on the preset knob (125) and the concave-up type digital display (124), when the self-locking position can be released through external force rotation force, a scale value is arranged on the digital display (124), and the scale indication mark of the knob corresponds to the digital display (124), so that a preset constant flow point can be displayed.