CN219198149U - Negative feedback pressure control valve - Google Patents
Negative feedback pressure control valve Download PDFInfo
- Publication number
- CN219198149U CN219198149U CN202320644443.9U CN202320644443U CN219198149U CN 219198149 U CN219198149 U CN 219198149U CN 202320644443 U CN202320644443 U CN 202320644443U CN 219198149 U CN219198149 U CN 219198149U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve block
- valve rod
- block
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Control Of Fluid Pressure (AREA)
Abstract
The utility model relates to a negative feedback pressure control valve. The negative feedback control device aims to solve the technical problems that the existing negative feedback control device needs more elements and has high electric control, use and maintenance costs. The technical scheme of the utility model is as follows: the control valve comprises a spring, a fixing nut, a long bolt, a nut, a lower valve block, a middle valve block, a valve rod, a valve tube, a valve core, an upper valve block and an adjusting ring, wherein the upper end of the lower valve block is connected with the bottom surface of a boss of the middle valve block, the lower end of the valve tube is connected with the top surface of the boss of the middle valve block, the upper end of the valve tube is connected with the lower end of the upper valve block, the lower valve block, the middle valve block, the valve tube and the upper valve block are connected into a whole through the long bolt and the nut, the valve rod penetrates through a valve rod hole formed in the middle valve block and the upper valve block, the valve core is arranged on the valve rod, the valve rod is sealed with a liquid outlet formed in the lower valve block in a hard mode, the spring is arranged on the upper portion of the valve rod, and the adjusting ring is sleeved on the upper portion of the valve rod, and the fixing nut is connected with the upper portion of the valve rod in a threaded mode.
Description
Technical Field
The utility model belongs to the technical field of hydraulic control valves, and particularly relates to a negative feedback pressure control valve.
Background
At present, when a negative feedback control relationship exists between two pipelines and an automatic control requirement exists, if the pipeline A pressure is greater than a certain value, the pipeline B is required to be closed, the pipeline A pressure is monitored through a PLC, when the pipeline A pressure is monitored to be greater than the certain value, the PLC controls a valve arranged on the pipeline B to be closed, so that the pipeline B is blocked, and when the pipeline A pressure is monitored to be less than the certain value, the PLC controls the valve arranged on the pipeline B to be opened, so that the pipeline B is communicated. Such an implementation, while accurate, requires a large number of components and must be electronically controlled, resulting in high maintenance costs.
Disclosure of Invention
The utility model aims to solve the technical problems that the existing negative feedback control device needs more elements and has high electric control and use and maintenance costs, and provides a negative feedback pressure control valve.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a negative feedback pressure control valve comprising a spring, a retaining nut, a long bolt and a nut, wherein: the valve rod passes through a valve rod hole formed in the middle valve block and the upper valve block, the lower part of the valve rod is positioned in a working cavity formed among the valve tube, the middle valve block and the upper valve block, the valve rod is arranged on the valve rod in the working cavity, the valve rod can slide in the valve rod hole formed in the middle valve block and the upper valve block, the lower end of the valve rod is inserted into the lower part in the valve tube, the upper end of the valve tube is connected with the lower end of the upper valve block, the lower valve block, the middle valve block, the valve tube and the upper valve block are connected into a whole through long bolts and nuts, the lower part of the valve rod is positioned in the working cavity formed among the middle valve block, the upper valve block and the upper valve block, the valve rod is arranged on the valve rod in the working cavity, the lower end of the valve rod can slide in the valve rod hole formed in the middle valve block and the upper valve block, the liquid outlet formed by the lower end of the valve rod and the lower valve block is sealed firmly, the top end of the spring is arranged on the upper end of the upper valve block, the upper end of the spring is positioned on the upper end of the valve rod and the upper end of the valve rod is positioned on the adjusting ring and is positioned on the upper end of the adjusting ring.
Further, the lower valve block is provided with a liquid cavity, a liquid inlet and a liquid outlet, the liquid outlet is arranged in the lower valve block and is positioned in the center of the bottom surface of the liquid cavity, and the liquid inlet is arranged on the side surface of the lower valve block and is communicated with the liquid cavity.
Further, a control port is arranged on the side wall of the upper valve block and is communicated with a hydraulic cavity arranged on the upper valve block.
The beneficial effects of the utility model are as follows:
in the technical scheme, the pressure spring is arranged at the upper part of the valve rod, the spring is adjusted to a value of a certain pressure at the beginning of use, when the pressure of the control port is smaller than the fixed value, the valve rod moves upwards, the valve rod is opened with the liquid outlet of the lower valve block, and the liquid inlet of the lower valve block is communicated with the liquid outlet; when the pressure of the control port is greater than the fixed value, the downward pressure borne by the valve core is greater than the upward force of the spring, so that the valve core drives the valve rod to move downwards until the valve rod is sealed with the liquid outlet of the lower valve block, and the liquid inlet and the liquid outlet of the lower valve block are isolated; the negative feedback control device has the advantages that the negative feedback control relation between two pipelines is realized, the function of automatic control is realized, and the technical problems that the existing negative feedback control device needs more elements and has higher electric control and use maintenance cost are solved. Compared with the background art, the utility model has the advantages of simple structure, no need of electric power control and low use and maintenance cost.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
in the figure: the valve comprises a lower valve block 1, an intermediate valve block 2, a valve rod 3, a valve tube 4, a valve core 5, an upper valve block 6, a spring 7, an adjusting ring 8, a fixing nut 9, a liquid outlet 10, a liquid inlet 11, a control port 12, a working cavity 13, a nut 14 and a long bolt 15.
Detailed Description
The utility model is described in detail below with reference to the drawings and examples.
As shown in fig. 1, a negative feedback pressure control valve in the present embodiment includes a spring 7, a fixing nut 9, a long bolt 15, and a nut 14, wherein: the valve is characterized by further comprising a lower valve block 1, an intermediate valve block 2, a valve rod 3, a valve pipe 4, a valve core 5, an upper valve block 6 and an adjusting ring 8, wherein the upper end of the lower valve block 1 is connected with the bottom surface of a boss arranged in the middle of the intermediate valve block 2, the lower end of the intermediate valve block 2 is inserted into a liquid cavity arranged in the lower valve block 1, the lower end of the valve pipe 4 is connected with the top surface of the boss arranged in the middle of the intermediate valve block 2, the upper end of the intermediate valve block 2 is inserted into the lower part in the valve pipe 4, the upper end of the valve pipe 4 is connected with the lower end of the upper valve block 6, the lower valve block 1, the intermediate valve block 2, the valve pipe 4 and the upper valve block 6 are connected into a whole through long bolts 15 and nuts 14, the valve rod 3 penetrates through a working cavity 13 formed between the intermediate valve block 2 and the upper valve block 6, the lower part is arranged on the valve rod 3 in the working cavity, the valve rod 3 can be arranged on the upper end of the intermediate valve block 2 and the upper valve block 2, the valve rod 3 can slide in the upper end of the valve block 6, the valve rod 3 is arranged on the upper end of the valve rod 3 and the upper end of the valve block 6 is arranged on the upper end of the valve rod 3, the valve rod 6 is connected with the upper end of the adjusting ring 8 through the valve rod 3, the upper end of the valve rod 6 is arranged on the upper end of the valve rod 3 and the valve rod 6 is arranged on the upper end of the valve sleeve 6, and the valve nut is arranged on the upper end of the valve nut 3. Sealing rings are arranged between the lower valve block 1 and the middle valve block 2, between the middle valve block 2 and the lower end of the valve pipe 4, and between the upper end of the valve pipe 4 and the upper valve block 6. A sealing ring is arranged between the valve core 5 and the valve rod 3 and between the valve core and the valve pipe 4. A sealing ring is arranged between the valve rod hole arranged on the middle valve block 2 and the upper valve block 6 and the valve rod 3.
Further, the lower valve block 1 is provided with a liquid cavity, a liquid inlet 11 and a liquid outlet 10, the liquid outlet 10 is arranged in the lower valve block 1 and is positioned in the center of the bottom surface of the liquid cavity, and the liquid inlet 11 is arranged on the side surface of the lower valve block 1 and is communicated with the liquid cavity.
Further, a control port 12 is arranged on the side wall of the upper valve block 6, and the control port 12 is communicated with a hydraulic cavity arranged on the upper valve block 6.
The working principle of the utility model is as follows:
when in use, the spring 7 is adjusted to a value of a certain pressure, the control port 12 is communicated with a control pipeline, and the liquid inlet 11 and the liquid outlet 10 of the lower valve block 1 are connected in series in the controlled pipeline; when the pressure of the liquid in the control pipeline is smaller than the fixed value of the spring pressure, the pressure of the liquid acting on the valve core 5 through the control port 12 is smaller than the pressure value of the spring 7, and at the moment, the pressure of the spring 7 pushes the adjusting ring 8 upwards, so that the valve rod 3 is driven to move upwards through the fixing nut 9, the lower end of the valve rod 3 is opened between the lower end of the valve rod 3 and the liquid outlet 10, and the liquid inlet 11 is communicated with the liquid outlet 10, namely, the liquid is communicated by the control pipeline; when the pressure of the liquid in the control pipeline is larger than the fixed value of the spring pressure, the downward pressure of the liquid acting on the valve core 5 through the control port 12 is larger than the upward pressure of the spring 7 acting on the adjusting ring 8, and at the moment, the valve core 5 is wholly stressed by the downward pressure, so that the valve core 5 drives the valve rod 3 to move downwards until the lower end of the valve rod 3 is sealed with the liquid outlet 10 of the lower valve block 1, and the liquid circulation between the liquid inlet 11 and the liquid outlet 10 is blocked, thereby blocking the controlled pipeline; thus, the automatic opening and closing function of the negative feedback control relation between the two pipelines is satisfied.
Claims (3)
1. The utility model provides a negative feedback pressure control valve, includes spring, fixation nut, long bolt and nut, characterized by: the valve rod passes through a valve rod hole formed in the middle valve block and the upper valve block, the lower part of the valve rod is positioned in a working cavity formed among the valve tube, the middle valve block and the upper valve block, the valve rod is arranged on the valve rod in the working cavity, the valve rod can slide in the valve rod hole formed in the middle valve block and the upper valve block, the lower end of the valve rod is inserted into the lower part in the valve tube, the upper end of the valve tube is connected with the lower end of the upper valve block, the lower valve block, the middle valve block, the valve tube and the upper valve block are connected into a whole through long bolts and nuts, the lower part of the valve rod is positioned in the working cavity formed among the middle valve block, the upper valve block and the upper valve block, the valve rod is arranged on the valve rod in the working cavity, the lower end of the valve rod can slide in the valve rod hole formed in the middle valve block and the upper valve block, the liquid outlet formed by the lower end of the valve rod and the lower valve block is sealed firmly, the top end of the spring is arranged on the upper end of the upper valve block, the upper end of the spring is positioned on the upper end of the valve rod and the upper end of the valve rod is positioned on the adjusting ring and is positioned on the upper end of the adjusting ring.
2. A negative feedback pressure control valve according to claim 1, characterized in that: the lower valve block is provided with a liquid cavity, a liquid inlet and a liquid outlet, the liquid outlet is arranged in the lower valve block and is positioned in the center of the bottom surface of the liquid cavity, and the liquid inlet is arranged on the side surface of the lower valve block and is communicated with the liquid cavity.
3. A negative feedback pressure control valve according to claim 1, characterized in that: and a control port is arranged on the side wall of the upper valve block and is communicated with a hydraulic cavity arranged on the upper valve block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320644443.9U CN219198149U (en) | 2023-03-28 | 2023-03-28 | Negative feedback pressure control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320644443.9U CN219198149U (en) | 2023-03-28 | 2023-03-28 | Negative feedback pressure control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219198149U true CN219198149U (en) | 2023-06-16 |
Family
ID=86715073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320644443.9U Active CN219198149U (en) | 2023-03-28 | 2023-03-28 | Negative feedback pressure control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219198149U (en) |
-
2023
- 2023-03-28 CN CN202320644443.9U patent/CN219198149U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204942717U (en) | Diaphragm stop valve | |
| CN201531483U (en) | Single-acting fast closing/double-acting boosting hydraulic cylinder | |
| CN201215190Y (en) | Digital solenoid electric valve | |
| CN219198149U (en) | Negative feedback pressure control valve | |
| CN219198150U (en) | Positive feedback pressure control valve | |
| CN110725959A (en) | Multifunctional butterfly valve for steam turbine | |
| CN218440002U (en) | Pilot-operated type leakage-free safety pressure valve | |
| CN114623250B (en) | Anti-blocking throttle valve convenient to clean | |
| CN216768394U (en) | Back pressure valve | |
| CN201554635U (en) | Multifunctional self-operated sleeve-type energy dissipating valve | |
| CN210949914U (en) | Multifunctional butterfly valve for steam turbine | |
| CN208364902U (en) | A kind of pressure adjustment relief valve | |
| CN2714914Y (en) | Zero resistance slow open and close check valve | |
| CN201739535U (en) | Pneumatic electric stop unloading valve | |
| CN221097604U (en) | Pressure reducing valve with valve core capable of being replaced quickly | |
| CN111271332A (en) | High-flow pilot-operated intrinsic safety electromagnetic water replenishing valve for mining emulsion pump station and use method | |
| CN220204716U (en) | Stop valve for nuclear power station | |
| CN219975576U (en) | Safe and reliable two-way speed regulation hydraulic valve group | |
| CN216078527U (en) | Modularized shock-resistant gas spring type hydraulic actuating mechanism | |
| CN220204693U (en) | Bellows self-operated multifunctional pressure regulating valve | |
| CN218954174U (en) | Float-type automatic regulating valve | |
| CN2632370Y (en) | Two-stage connecting high-pressure high-flow pressure-relief fluid discharge valves | |
| CN214699436U (en) | Pilot-operated diaphragm ball float valve | |
| CN219327800U (en) | Y-shaped direct-current type corrugated pipe stop valve closing structure | |
| CN202834107U (en) | Membrane type mud valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |