CN-224229380-U - Vertical flow regulating valve and system for preparing edible salt from seawater

CN224229380UCN 224229380 UCN224229380 UCN 224229380UCN-224229380-U

Abstract

The utility model provides a vertical flow regulating valve and a system for preparing edible salt from seawater, and belongs to the technical field of regulating valves. The utility model uses the servo motor to make the flow regulation have extremely high precision, has the characteristics of linearly regulating the pressure and quick response speed, and does not need to rely on manual or simple electric driving (no manufacturer uses the servo motor in the regulating valve in the prior art). The vertical flow regulating valve is vertical, has compact integral structure, and is suitable for a seawater salt making system (arranged in the vertical direction and reducing the occupation of the transverse space) integrated in a small space of a container. The valve body part of the utility model adopts seawater corrosion resistant materials, thereby reducing the probability of valve failure caused by pitting or stress corrosion cracking during flow regulation. The seawater salt making system using the vertical flow regulating valve is linked with the servo motor, so that the real-time high-precision flow regulation requirement is met.

Inventors

CAI QIANGBO
WEI YANDONG
SHEN YAN
CHEN YIYUN

Assignees

靖江市亚泰特种材料制造有限公司
上海颐圣计算机系统有限公司
无锡易福高压清洗设备有限公司

Dates

Publication Date: 20260512
Application Date: 20250403

Claims (10)

1. A vertical flow regulating valve is characterized by comprising a valve body part and a driving part, The valve body part is a ball valve or a stop valve, the valve body part is made of seawater corrosion resistant materials, The driving section includes: A servo motor; The reduction gearbox is connected with the servo motor and used for reducing the output power of the servo motor, and The transmission part is connected with the valve body part, is directly or indirectly connected with the reduction gearbox and driven by the reduction gearbox so as to control the opening and closing degree of the valve body part, Wherein the connecting line direction of the servo motor and the reduction gearbox is marked as a first direction, the connecting line direction of the reduction gearbox and the transmission piece is marked as a second direction, the connecting line direction of the transmission piece and the valve body part is marked as a third direction, The first direction and the third direction are parallel to each other and the second direction is perpendicular to the first direction and the third direction, or the first direction, the second direction and the third direction are coincident.
2. The vertical flow regulator valve according to claim 1, wherein: Wherein the valve body part is a stop valve, The driving section further includes: A worm driven by the output shaft of the reduction gearbox to rotate and provided with spiral teeth thereon, and The worm wheel is provided with tooth grooves which are in matched engagement with the spiral teeth, the axis direction of the worm wheel is perpendicular to the axis direction of the worm, the position of the worm wheel is fixed, the worm wheel is driven by the worm to rotate around the axis of the worm wheel, The transmission part comprises a screw rod and an anti-rotating ring, the position of the anti-rotating ring is fixed, the anti-rotating ring is used for the screw rod to pass through and prevent the screw rod from rotating around the axis thereof, the screw rod is in threaded connection with the worm wheel, the worm wheel rotates around the axis to drive the screw rod to displace along the length direction thereof, The power input shaft and the power output shaft of the reduction gearbox form 90 degrees, The valve body includes: The stop valve body is provided with a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are respectively provided with a water inlet flow passage and a water outlet flow passage, the water inlet flow passage and the water outlet flow passage are intersected, and The stop valve core is connected with the screw rod, is driven by the stop valve core to displace along the length direction of the screw rod and at least partially penetrates through the water inlet flow channel, so that the valve cone of the stop valve core is different in plugging degree at the junction of the water inlet flow channel and the water outlet flow channel, the flow rate of the water outlet flow channel is changed, and the maximum radial outer diameter of the valve cone is at least 0.01-0.2 mm smaller than the inner diameter of the water inlet flow channel.
3. The vertical flow regulator valve according to claim 2, wherein: Wherein, the shut-off valve body includes: The connecting unit is used for allowing one end of the stop valve core with the valve cone to penetrate and enter, and sealing treatment is carried out between the end and the connecting unit; a water inlet unit comprising the water inlet pipe and communicated with the connecting unit, and The water outlet unit comprises the water outlet pipe and is communicated with the side wall of the connecting unit.
4. The vertical flow regulator valve according to claim 2, wherein: Wherein, the shut-off valve body includes: the switching unit is used for enabling one end of the stop valve core with the valve cone to penetrate through and enter; The connecting unit comprises a first connecting section, a radial water outlet section and a second connecting section, wherein the first connecting section is communicated with the switching unit, the radial water outlet section is communicated with the first connecting section, the outer diameter of the radial water outlet section is smaller than the outer diameter of the first connecting section, the circumferential side wall surface of the radial water outlet section is provided with a plurality of water outlet holes, and the second connecting section is communicated with the radial water outlet section, and the outer diameter of the second connecting section is larger than the outer diameter of the radial water outlet section; a water inlet unit comprising the water inlet pipe and communicated with the second connecting section, and The water outlet unit comprises a rotating piece and a water outlet pipe, wherein the rotating piece is rotatably fixed on the radial water outlet section in a ring mode and is clamped together by the cooperation of the switching unit and the second connecting section, and the rotating piece is communicated with the water outlet pipe.
5. The vertical flow regulator valve according to claim 2, wherein: Wherein the outer peripheral side of the screw rod is provided with a first thread groove, the through hole for the screw rod to pass through is provided with a second thread groove, the first thread groove is matched with the second thread groove and is matched with the second thread groove together to be densely embedded with balls, The worm wheel is internally provided with a ball return channel, the inlet and the outlet of the ball return channel are both positioned in the through hole, the inlet and the outlet of the ball return channel are respectively communicated with the two ends of the second thread groove, the ball return channel is internally densely embedded with a whole row of balls, The screw rod, the ball and the worm wheel jointly form a ball screw structure, The water flow in the water inlet flow channel gives the force of the stop valve core axially facing the anti-rotating ring, so that the screw rod axially faces the anti-rotating ring to be compressed, the ball is driven to slightly displace, the screw rod and the worm wheel are axially pre-tightened, and the back clearance of the screw rod and the worm wheel in the relative displacement process is eliminated.
6. The vertical flow regulator valve according to claim 1, wherein: Wherein the valve body part is a ball valve, The driving section further includes: A worm driven by the output shaft of the reduction gearbox to rotate and provided with spiral teeth thereon, and The worm wheel is provided with tooth grooves which are in matched engagement with the spiral teeth, the axis direction of the worm wheel is perpendicular to the axis direction of the worm, the position of the worm wheel is fixed, the worm wheel is driven by the worm to rotate around the axis of the worm wheel, The driving piece is in a rod shape, one end of the driving piece is fixed with the worm wheel and driven by the worm wheel to coaxially rotate together, and the other end of the driving piece is connected with a ball body with a flow passage of the ball valve, so that the ball body is driven to rotate to adjust the opening and closing degree of the flow passage.
7. The vertical flow regulator valve according to claim 2 or 6, wherein: Wherein the driving part further includes: a case as a housing of the driving section; The bearing frame, set up in the top opening part of box, the worm wheel set up in the box with in the inner space that the bearing frame formed, thereby worm wheel axial upper and lower both ends respectively through thrust bearing with the lower surface of bearing frame with thereby bottom indirect butt in the box makes it can not produce axial displacement when rotating around self axial, thereby the driving medium wears to establish the bottom of the box with valve body connection.
8. The vertical flow regulator valve according to claim 7, wherein: Wherein the box body is made of stainless steel, The worm is made of stainless steel, The worm wheel is made of brass, The valve body is made of dual-phase steel.
9. The vertical flow regulator valve according to claim 1, wherein: The valve body is a ball valve, the transmission piece is in a rod shape, one end of the transmission piece is fixed with the output shaft of the reduction gearbox and driven by the transmission piece to coaxially rotate together, and the other end of the transmission piece is connected with a ball body with a flow passage of the ball valve, so that the ball body is driven to rotate to adjust the opening and closing degree of the flow passage.
10. A system for preparing edible salt from seawater, which is characterized in that the vertical flow regulating valve in any one of claims 1-9 is used and integrated in a container.

Description

Vertical flow regulating valve and system for preparing edible salt from seawater Technical Field The utility model belongs to the technical field of regulating valves, and particularly relates to a vertical flow regulating valve and a system for preparing edible salt from seawater. Background The traditional method for preparing sea salt mainly comprises a salt boiling method, a sun-drying method and a spray evaporation method, and the traditional methods have the defects that the salt boiling method can only be used for preparing industrial salt and has high energy consumption, the sun-drying method needs large occupied area and more manpower, the production period is long, and the spray evaporation method also needs large occupied area and has high energy consumption. Therefore, in order to make edible salt from seawater more efficiently and energy-effectively, the sea salt resource is fully utilized, and a novel system for making edible salt from seawater is needed. At present, a system for preparing fresh water by a membrane method is available for collecting, filtering and reverse osmosis treatment of sea water to obtain fresh water and concentrated sea water (strong brine), and the inventor improves on the above-mentioned system for preparing fresh water by sea water to form a system for preparing edible salt by sea water, and integrates the system into a space of a container in consideration of convenience of transportation and deployment in actual use. In such new systems, a flow control valve is required for use with the ultrafiltration module and reverse osmosis membrane therein. Although various flow regulating valves exist on the market, the flow regulating valve is difficult to be suitable for the new system. The current flow regulating valves on the market mainly have the following problems: (1) The regulation precision is low, the traditional valve (such as a common stop valve and a ball valve) is driven manually or simply electrically, and a mechanical transmission part has backlash (such as a screw clearance of a screw rod), so that response is lagged during flow regulation, and high-precision dynamic control is difficult to realize. (2) The pressure resistance is insufficient, the tightness of the valve body is easy to lose efficacy under the extreme working condition of high pressure (6-15 MPa) or low pressure (0-6 MPa), the leakage risk is increased, and particularly, when the valve core and the valve seat are impacted by high flow, the valve core and the valve seat are easy to wear, so that the service life is shortened. (3) The material has poor corrosion resistance, and under the environment of high corrosive media such as seawater, the valve body and the transmission part made of common stainless steel or cast iron are easy to generate pitting corrosion or stress corrosion cracking, so that the valve is invalid. (4) The structure is complex, the maintenance is difficult, the existing regulating valve is mainly in split type design, the transmission mechanism is connected with the valve body in a complex manner, the disassembly and maintenance are required to be stopped, the continuity of the system is affected, the modularization degree is low, and the replacement cost of parts is high. (5) And the dynamic response delay is that a valve driven by a common motor is adopted, so that the torque control is inaccurate, a real-time feedback mechanism is lacked, the flow change requirement is difficult to respond quickly, and the system efficiency is reduced. (6) And a control error caused by back clearance is that a clearance (such as a worm and worm wheel meshing clearance and a screw rod and nut clearance) in a mechanical transmission chain generates idle stroke during reverse movement, so that flow adjustment errors are accumulated, and the stability of technological parameters is affected. (7) The existing flow regulating valve is huge in size and is not suitable for a seawater salt making system integrated in a small space of a container by the inventor, so that the system occupies too much space. Disclosure of utility model The present utility model has been made to solve the above problems, and an object of the present utility model is to provide a vertical flow rate control valve and a salt making system using seawater. The utility model provides a vertical flow regulating valve which is characterized by comprising a valve body part and a driving part, wherein the valve body part is a ball valve or a stop valve, the valve body part is made of seawater corrosion resistant materials, the driving part comprises a servo motor, a reduction gearbox connected with the servo motor and used for reducing the output power of the servo motor, and a transmission part connected with the valve body part, wherein the transmission part is directly or indirectly connected with the reduction gearbox and driven by the reduction gearbox so as to control the opening and closing degree of the valve body