Squirrel-cage hydraulic control pressure reducing valve

Abstract

The invention provides a squirrel-cage hydraulic control pressure reducing valve and relates to the technical field of valves, the squirrel-cage hydraulic control pressure reducing valve comprises a pressure reducing valve body, the pressure reducing valve body comprises a first conveying pipeline and a second conveying pipeline, a pressure reducing valve element is installed between the first conveying pipeline and the second conveying pipeline, and the squirrel-cage hydraulic control pressure reducing valve further comprises a pressure control mechanism for controlling the opening degree of the pressure reducing valve element. The pressure reducing valve element comprises a sealing device, a control device connected with the sealing device in a sliding mode and a mouse cage device connected with the control device. The mouse cage device comprises a mouse cage base and a mouse cage sleeve, the mouse cage base comprises a fixed seat and a movable seat, the mouse cage sleeve is fixed to the outer side of the fixed seat, the movable seat is rotationally connected with the fixed seat, and the movable seat and the fixed seat are coaxially arranged; a cleaning device used for cleaning the inner wall of the mouse cage sleeve is fixed to the outer side of the movable base. The overall cleaning efficiency is improved, and it is guaranteed that the mouse cage sleeve is in a smooth state continuously.

Description

Technical Field

[0001] The invention relates to the technical field of valves, in particular to a squirrel cage type hydraulic control pressure reducing valve. Background Art

[0002] The pressure reducing valve can adjust the water flow rate and the water pressure at the front and rear ends by adjusting the opening of the internal valve core. It is widely used in water supply or drainage pipelines in living, production and other environments.

[0003] The valve core structure of the squirrel cage hydraulic control pressure reducing valve has a guide sleeve similar to a squirrel cage. Under the condition of the same opening, it can reduce the conduction area to increase the adjustment accuracy, and its pressure reduction control effect is better; however, for the squirrel cage hydraulic control pressure reducing valve used in the sewage field, due to its special internal structure, there are impurities accumulated on the hole surface of the guide sleeve, which reduces the size of the hole drainage. In severe cases, the water flow cannot pass through, affecting the normal adjustment process of the pressure reducing valve; manual disassembly, replacement and cleaning are required on a regular basis, affecting the normal discharge of sewage. Summary of the invention

[0004] In view of the above problems, the present invention provides a squirrel cage hydraulic control pressure reducing valve, which improves the overall cleaning efficiency and ensures that the squirrel cage sleeve is continuously in an unobstructed state.

[0005] To solve the above problems, the technical solution adopted by the present invention is: A squirrel cage hydraulic control pressure reducing valve comprises a pressure reducing valve body, the pressure reducing valve body comprises a first delivery pipeline and a second delivery pipeline, a pressure reducing valve core is installed between the first delivery pipeline and the second delivery pipeline, and also comprises a pressure control mechanism for controlling the opening size of the pressure reducing valve core, the pressure reducing valve core comprises a sealing device, a control device slidably connected with the sealing device, and a squirrel cage device connected with the control device; the squirrel cage device comprises a squirrel cage base and a squirrel cage sleeve, the squirrel cage base comprises a fixed seat and a movable seat, the squirrel cage sleeve is fixed on the outer side of the fixed seat, the movable seat is rotatably connected with the fixed seat, and the movable seat is coaxially arranged with the fixed seat, a cleaning device for cleaning the inner wall of the squirrel cage sleeve is fixed on the outer side of the movable seat, the cleaning device extends along the axis direction of the squirrel cage sleeve and the cleaning device abuts against the inner wall of the squirrel cage sleeve; wherein, the inner wall of the squirrel cage sleeve is continuously cleaned in the process of controlling the cleaning device to directional deflect around the axis of the squirrel cage sleeve.

[0006] Preferably, the cleaning device includes a relatively fixed cleaning base and a relatively movable cleaning baffle, a control chamber is formed inside the cleaning base, a cleaning chamber is formed on the side of the cleaning base close to the squirrel cage sleeve, the cleaning baffle has a U-shaped cross-section, the cleaning baffle is installed between the control chamber and the cleaning chamber, the cleaning chamber is also connected to a low-voltage conduction structure, and the control chamber is connected to a control component for adjusting the distance between the cleaning baffle and the cleaning base.

[0007] Preferably, the control assembly is a hydraulic control structure, including a control capsule, the control capsule is connected to a control chamber through a guide pipe, and a control piston fixedly connected to a cleaning baffle is sealingly and slidably connected in the control chamber.

[0008] Preferably, the sealing device comprises a relatively fixed sealing baffle, the control device is slidably connected to the inner wall of the sealing device, and the control capsule is arranged between the sealing baffle and the control device.

[0009] Preferably, a telescopic connecting rod is provided inside the sealing device, a first end of the telescopic connecting rod is connected to the pressure control mechanism, and a second end is connected to the control device, and a hollow channel 2 for the guide pipe to pass through is provided inside the telescopic connecting rod.

[0010] Preferably, a control shaft is provided inside the control device, the lower end of the control shaft is fixedly connected to the movable seat, and the upper end is arranged coaxially with the telescopic connecting rod, and a hollow channel 1 connected to the hollow channel 2 is provided inside the control shaft, and the hollow channel 1 is for the diversion pipe to pass through.

[0011] Preferably, the guide pipe is a double-layer casing, and two groups of guide channels are formed inside the double-layer conductive casing. The first group of guide channels is connected to the low-pressure conductive structure, and the second group of guide channels is connected to the control component.

[0012] Preferably, a rotating connector is installed inside the hollow channel 1, and the rotating connector is serially connected to the inside of the guide pipe.

[0013] The beneficial effects of the present invention are: Compared with the prior art, through the above-mentioned structural design, the surface of the squirrel cage sleeve can be cleaned without disassembling the squirrel cage sleeve, which will not affect the normal transportation of the liquid in the pipeline, thereby improving the efficiency of liquid transportation. At the same time, the cleaning process can be carried out continuously in the squirrel cage sleeve with directional rotation, thereby improving the overall cleaning efficiency and ensuring that the squirrel cage sleeve is continuously in an unobstructed state. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the internal structure of the present invention.

[0015] Figure 2 For the present invention Figure 1 Schematic diagram of the main structure.

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the pressure reducing valve core of the present invention.

[0017] Figure 4 For the present invention Figure 3 Schematic diagram of the main structure.

[0018] Figure 5 For the present invention Figure 4 AA section structure schematic diagram.

[0019] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at B.

[0020] In the figure: 100, pressure reducing valve body; 110, delivery pipeline 1; 120, delivery pipeline 2; 200, pressure control mechanism; 300, sealing device; 310, sealing baffle; 320, control capsule; 400, control device; 410, control shaft; 411, hollow channel 1; 412, rotating connector; 500, cage device; 510, cage base; 511, fixed seat; 512, movable seat; 520, cage sleeve; 521, diversion hole; 600, telescopic connecting rod; 610, hollow channel 2; 700, cleaning device; 710, cleaning base; 720, cleaning baffle; 730, cleaning chamber; 740, control chamber; 750, control piston; 760, diversion pipeline. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] In order to solve the problems existing in the background technology, Figure 1 -Attached Figure 6 The squirrel cage hydraulic control pressure reducing valve comprises a pressure reducing valve body 100, the pressure reducing valve body 100 comprises a delivery pipeline 110 and a delivery pipeline 2 120, a pressure reducing valve core is installed between the delivery pipeline 110 and the delivery pipeline 2 120, and also comprises a pressure control mechanism 200 for controlling the opening of the pressure reducing valve core, the pressure control mechanism 200 can control the opening of the pressure reducing valve core, thereby adjusting the rate at which the liquid flows through and adjusting the pressure of the rear end liquid.

[0023] The pressure control mechanism 200 here can be selected as a combination of a spring and a pressure sensing structure. After the pressure sensing structure senses the pressure reduction at the rear end, the control spring contracts, which can pull the pressure reducing valve core to move in the direction of a larger opening. The above control process is a prior art and will not be elaborated on here.

[0024] Specifically, the pressure reducing valve core includes a sealing device 300, a control device 400 slidably connected to the sealing device 300, and a cage device 500 connected to the control device 400; the cage device 500 includes a cage base 510 and a cage sleeve 520, the cage base 510 includes a fixed seat 511 and a movable seat 512, the cage sleeve 520 is fixed on the outside of the fixed seat 511, and a sealing ring is installed on the outside of the cage base 510. By controlling the cage base 510 and the cage sleeve 520 to move outward, the pressure reducing valve core can be controlled to move in a direction with a smaller opening until the pressure reducing valve core is closed; by controlling the cage base 510 and the cage sleeve 520 to move inward, the pressure reducing valve core as a whole can be controlled to move in a direction with a larger opening, so as to increase the amount of liquid flowing per unit time, increase the pressure in the rear end pipeline, and achieve dynamic balance.

[0025] The movable seat 512 here is rotatably connected to the fixed seat 511, and the movable seat 512 is coaxially arranged with the fixed seat 511. A cleaning device 700 for cleaning the inner wall of the cage sleeve 520 is fixed on the outer side of the movable seat 512. By installing the cleaning device 700 on the inner side of the cage sleeve 520, the inner wall of the cage sleeve 520 can be cleaned. Without removing the cage sleeve 520, the guide hole 521 on the surface of the cage sleeve 520 can be cleaned, thereby ensuring the normal and smooth flow of liquid and the stability of the decompression.

[0026] The cleaning device 700 extends along the axis of the cage sleeve 520 and abuts against the inner wall of the cage sleeve 520 . During the cleaning process, the cleaning device 700 is controlled to deflect around the axis of the cage sleeve 520 to continuously clean the inner wall of the cage sleeve 520 .

[0027] Through the above-mentioned structural design, during the process of the cleaning device 700 directional deflecting around the predetermined axis, continuous cleaning of multiple points on the inner wall of the squirrel cage sleeve 520 can be completed, thereby ensuring smooth flow of liquid at various positions on the surface of the squirrel cage sleeve 520. At the same time, the circumferential size of the cleaning device 700 is small, and cleaning one guide hole 521 or two adjacent guide holes 521 at a time will not affect the normal liquid flow.

[0028] In summary, through the above-mentioned structural design, the surface of the squirrel cage sleeve 520 can be cleaned without disassembling the squirrel cage sleeve 520, which will not affect the normal transportation of the liquid in the pipeline, thereby improving the efficiency of liquid transportation. At the same time, the cleaning process can be carried out continuously in the squirrel cage sleeve 520 by directional rotation, thereby improving the overall cleaning efficiency and ensuring that the squirrel cage sleeve 520 is continuously in an unobstructed state.

[0029] Specifically, the cleaning device 700 includes a relatively fixed cleaning base 710 and a relatively movable cleaning baffle 720. The movable seat 512 can drive the cleaning base 710 and the cleaning baffle 720 to deflect synchronously during the directional rotation. A control chamber 740 is formed inside the cleaning base 710, and a cleaning chamber 730 is formed on the side of the cleaning base 710 close to the squirrel cage sleeve 520. The cross-section of the cleaning baffle 720 is U-shaped. The cleaning baffle 720 is installed between the control chamber 740 and the cleaning chamber 730. The cleaning baffle 720 can move downward relative to the cleaning base 710. By increasing the pressure in the control chamber 740, the cleaning baffle 720 can be pushed downward to achieve drive control.

[0030] The cleaning chamber 730 is also connected to a low-pressure conduction structure, and the control chamber 740 is connected to a control component for adjusting the distance between the cleaning baffle 720 and the cleaning base 710. The low-pressure conduction structure here is located on the outside of the pressure reducing valve. The low pressure here is low pressure relative to the pressure inside the valve body. During the cleaning process, the cleaning chamber 730 is controlled to be connected to the low-pressure conduction structure, which can generate suction on the guide hole 521 from the inside, and can efficiently absorb some impurities remaining on the surface of the guide hole 521, ultimately ensuring the cleanliness of the surface of the guide hole 521.

[0031] It should be noted that the cleaning chamber 730 here is in a tight contact with the inner wall of the squirrel cage sleeve 520. During the negative pressure suction process, the flow rate of the liquid on the outer side of the guide hole 521 can be changed. Under the action of the liquid flow, the solid impurities accumulated in the guide hole 521 can be quickly discharged in the reverse direction.

[0032] The control component is a hydraulic control structure, including a control capsule 320, which is connected to the control chamber 740 through a guide pipe 760. The control chamber 740 is sealed and slidably connected with a control piston 750 fixedly connected to the cleaning baffle 720. By squeezing the control capsule 320, the control oil in the control capsule 320 can be squeezed into the control chamber 740 to push the control piston 750 to move downward. The control piston 750 can drive the U-shaped cleaning baffle 720 to move downward. In this process, the structure of the cleaning baffle 720 located in the cleaning chamber 730 can be controlled to block different numbers of guide holes 521, thereby realizing adaptive control cleaning.

[0033] When the overall opening of the squirrel cage sleeve 520 is relatively large, the cleaning baffle 720 is controlled to move farther downward, so that the guide holes 521 in which the liquid is flowing can be adaptively cleaned by negative pressure suction.

[0034] It should be noted that, here, the guide holes 521 are arranged in multiple groups along the axis direction of the squirrel cage sleeve 520, and the opening sizes of the multiple groups of guide holes 521 can be the same, or the opening sizes of the multiple groups of guide holes 521 can be gradually increased.

[0035] Specifically; the sealing device 300 includes a relatively fixed sealing baffle 310, the control device 400 is slidably connected to the inner wall of the sealing device 300, and the control capsule 320 is arranged between the sealing baffle 310 and the control device 400. Here, the sealing device 300 and the sealing baffle 310 are in a relatively fixed state, and the control device 400 is located inside the sealing device 300 and is in a relatively sliding state. The outer diameter of the control device 400 can be adapted to the inner diameter of the sealing device 300 to ensure the sealing of the connection; in the process of driving the control device 400 to move, the compression state of the control capsule 320 can be changed to realize the drive control of the control oil in the control capsule 320.

[0036] It should be noted here that the control bag 320 can be set as an air bag with reset elasticity or a reset spring can be set in the control chamber 740. In the process of the control device 400 and the sealing device 300 moving away from each other, the control bag 320 can be adjusted to reset to an expanded state, and the internal control oil can be extracted into the control bag 320 to achieve the reset of the overall structure of the cleaning baffle 720; finally, precise negative pressure extraction and cleaning of the outer guide hole 521 can be achieved.

[0037] A telescopic connecting rod 600 is arranged inside the sealing device 300. The first end of the telescopic connecting rod 600 is connected to the pressure control mechanism 200, and the second end is connected to the control device 400. During the extension and retraction process of the pressure control mechanism 200, the control device 400 can be pulled to move in a predetermined direction to realize drive control; a hollow channel 2 610 for the guide pipe 760 to pass through is arranged inside the telescopic connecting rod 600. By arranging the guide pipe 760 in the hollow channel 2 610, the normal deflection of the overall structure of the cleaning device 700 in the squirrel cage sleeve 520 can be met, the internal line layout can be simplified, and the flow control requirements of the medium can be met.

[0038] A control shaft 410 is arranged inside the control device 400. The control shaft 410 here is connected to an external power source and can control the movable seat 512 to deflect in a predetermined direction; the lower end of the control shaft 410 is fixedly connected to the movable seat 512, and the upper end is coaxially arranged with the telescopic connecting rod 600. A hollow channel 1 411 connected to the hollow channel 2 610 is arranged inside the control shaft 410. The hollow channel 1 411 is for the guide pipe 760 to pass through. The guide pipe 760 here can pass through the hollow channel 2 610 and the hollow channel 1 411 in sequence, and finally be connected to the cleaning device 700 from the middle position to realize the control of the discharge of oil and wastewater containing solid impurities.

[0039] The control capsule 320 is arranged inside the sealing device 300 and can be connected to the inside of the guide pipe 760 through an opening on one side to achieve pumping control of the control oil.

[0040] Specifically, the guide pipe 760 is a double-layer casing, and two groups of guide channels are formed inside the double-layer guide casing. The first group of guide channels is connected to the low-pressure conduction structure, and the second group of guide channels is connected to the control component. The guide channel located on the outside is connected to the control capsule 320 for conveying control oil, and the guide channel located on the inside is connected to the low-pressure conduction structure for discharging sewage with solid impurities. The hollow channel 411 here is in a rotating state, and a rotating connector 412 is installed at the rotating connection between the hollow channel 411 and the telescopic connecting rod 600, which can ensure the normal transportation of the liquid medium while ensuring the normal deflection of the control shaft 410.

[0041] It should be noted here that, for other connection modes, the cleaning device 700 can be controlled to rotate once and then return along the original path to avoid interference with the pipeline caused by continuous rotation.

[0042] The rotating connector 412 is serially connected to the inside of the flow guide pipe 760 to achieve normal conduction of the liquid medium.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A squirrel cage hydraulic control pressure reducing valve, comprising a pressure reducing valve body (100), wherein the pressure reducing valve body (100) comprises a first delivery pipeline (110) and a second delivery pipeline (120), wherein a pressure reducing valve core is installed between the first delivery pipeline (110) and the second delivery pipeline (120), and further comprising a pressure control mechanism (200) for controlling the opening of the pressure reducing valve core, characterized in that: The pressure reducing valve core comprises a sealing device (300), a control device (400) slidably connected to the sealing device (300), and a cage device (500) connected to the control device (400); the cage device (500) comprises a cage base (510) and a cage sleeve (520); the cage base (510) comprises a fixed seat (511) and a movable seat (512); the cage sleeve (520) is fixed to the outside of the fixed seat (511); the movable seat (512) is rotatably connected to the fixed seat (511), and the movable seat (512) and the fixed seat (511) are arranged coaxially; a cleaning device (700) for cleaning the inner wall of the cage sleeve (520) is fixed to the outside of the movable seat (512); the cleaning device (700) extends along the axial direction of the cage sleeve (520) and the cleaning device (700) abuts against the inner wall of the cage sleeve (520); The inner wall of the squirrel cage sleeve (520) is continuously cleaned during the process of controlling the cleaning device (700) to deflect in a directional manner around the axis of the squirrel cage sleeve (520).

2. The squirrel cage hydraulic control pressure reducing valve according to claim 1, characterized in that: The cleaning device (700) comprises a relatively fixed cleaning base (710) and a relatively movable cleaning baffle (720); a control chamber (740) is formed inside the cleaning base (710); a cleaning chamber (730) is formed on a side of the cleaning base (710) close to the squirrel cage sleeve (520); the cleaning baffle (720) has a U-shaped cross section; the cleaning baffle (720) is installed between the control chamber (740) and the cleaning chamber (730); the cleaning chamber (730) is also connected to a low-voltage conduction structure; and the control chamber (740) is connected to a control component for adjusting the distance between the cleaning baffle (720) and the cleaning base (710).

3. The squirrel cage hydraulic control pressure reducing valve according to claim 2, characterized in that: The control assembly is a hydraulic control structure, comprising a control capsule (320), wherein the control capsule (320) is in communication with a control chamber (740) via a flow guide pipe (760), and a control piston (750) fixedly connected to the cleaning baffle (720) is sealed and slidably connected in the control chamber (740).

4. The squirrel cage hydraulic control pressure reducing valve according to claim 3, characterized in that: The sealing device (300) comprises a relatively fixed sealing baffle (310), the control device (400) is slidably connected to the inner wall of the sealing device (300), and the control capsule (320) is arranged between the sealing baffle (310) and the control device (400).

5. The squirrel cage hydraulic control pressure reducing valve according to claim 4, characterized in that: A telescopic connecting rod (600) is arranged inside the sealing device (300); a first end of the telescopic connecting rod (600) is connected to the pressure control mechanism (200), and a second end is connected to the control device (400); a second hollow channel (610) is arranged inside the telescopic connecting rod (600) for the guide pipe (760) to pass through.

6. The squirrel cage hydraulic control pressure reducing valve according to claim 5, characterized in that: A control shaft (410) is disposed inside the control device (400); the lower end of the control shaft (410) is fixedly connected to the movable seat (512), and the upper end is coaxially arranged with the telescopic connecting rod (600); a hollow channel 1 (411) communicating with the hollow channel 2 (610) is disposed inside the control shaft (410); the hollow channel 1 (411) is for the guide pipe (760) to pass through.

7. The squirrel cage hydraulic control pressure reducing valve according to claim 6, characterized in that: The flow guide pipe (760) is a double-layer casing, and two groups of flow guide channels are formed inside the double-layer conductive casing, the first group of flow guide channels is connected to the low-pressure conductive structure, and the second group of flow guide channels is connected to the control component.

8. The squirrel cage hydraulic control pressure reducing valve according to claim 7, characterized in that: A rotating connection member (412) is installed inside the first hollow channel (411), and the rotating connection member (412) is serially connected to the inside of the guide pipe (760).

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