An electronic pressure controller

Abstract

The application relates to the technical field of pressure controllers, in particular to an electronic pressure controller which comprises a shell, a mounting seat, a connecting channel and a sensor. The mounting seat is mounted on the shell and is used for connecting the shell with a detected object. The shell is internally provided with the connecting channel. The sensor is mounted on the shell and is located in the shell. A buffer block is slidably mounted on the shell. The connecting channel is provided with a tapered connecting part. The buffer block cooperates with the connecting part. The application delays the opening of the detection channel and discharges the gas in the exhaust space through the exhaust assembly, so that the water hammer caused by the rapid entry of water into the exhaust space is avoided, the sensor is prevented from being overloaded and damaged by the water hammer impact, the force generated by the water hammer can be shared by the time delay assembly, the rapid rise of the internal gas pressure of the exhaust space is avoided to extrude the sensor, the sensor is prevented from being damaged by the overload pressure, and the accuracy of the electronic pressure controller is ensured.

Description

Technical Field

[0001] This invention relates to the field of pressure controller technology, specifically to an electronic pressure controller. Background Technology

[0002] Electronic pressure controllers are used to monitor and control pressure in fluid systems, ensuring that the system operates within a safe and stable pressure range while protecting equipment from damage caused by excessively high or low pressure.

[0003] When operating, electronic pressure controllers detect the internal pressure of pipelines using pressure sensors. They then control the water supply equipment to adjust its power, ensuring the system operates within a safe and stable pressure range. However, in high-pressure systems, such as high-pressure descaling systems, the rapid pressure increase during water supply equipment startup can cause severe water hammer within the detection pipeline. This water hammer directly impacts the pressure sensor, and the pressure generated can be significantly higher than the normal water pressure, potentially causing overload and damage. Therefore, in high-pressure systems... Typically, measures are implemented to reduce water hammer impact, such as installing buffers in the pipeline. However, the water hammer impact generated in high-pressure pipelines is significant, making it impossible to completely prevent water hammer from impacting the sensor. Furthermore, due to the presence of air inside the pipeline, when the water supply equipment starts, the high-speed water flow merges with the air to form an air mass. This air mass will break up after stabilizing, and the resulting breakup will also generate a significant impact effect, causing the sensor to be overloaded and damaged. This, in turn, reduces the control accuracy of the electronic pressure controller, preventing the system from operating within a safe and stable pressure range. Consequently, this can lead to damage to internal instruments or insufficient system pressure, hindering normal operation.

[0004] Therefore, in order to avoid the problem of water hammer and gas generated by the high-pressure system during system startup causing sensor overload and damage, thus affecting the control accuracy of the electronic pressure controller, an electronic pressure controller is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an electronic pressure controller. To address the problem of water hammer impacting the sensor during system startup, which could overload and damage the sensor and reduce the controller's accuracy, this invention delays the opening of the detection channel and discharges gas from the exhaust space via an exhaust assembly. This prevents water from rapidly entering the exhaust space and causing water hammer, thus avoiding overload damage to the sensor. Furthermore, the delay assembly can distribute the force generated by the water hammer, preventing a rapid rise in air pressure within the exhaust space from compressing the sensor and further preventing overload damage. This ensures the control accuracy of the electronic pressure controller.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An electronic pressure controller includes a housing, a mounting base, a connecting channel, and a sensor. The mounting base is installed on the housing and is used to connect the housing to a detection object. The connecting channel is provided inside the housing. The sensor is installed on the housing and located inside the connecting channel. A buffer block is slidably installed on the housing. The connecting channel has a conical connecting part. The buffer block cooperates with the connecting part and divides the connecting channel into an exhaust space and a buffer space. The housing is provided with a delay component and an exhaust component. The delay component controls the buffer block to move slowly when it is subjected to water pressure. The exhaust component relies on the negative pressure generated by the water flow from the detection object to expel gas from the exhaust space.

[0008] By installing a buffer block inside the connecting channel and using a time-delay component, when water hammer occurs inside the connecting channel, the force of the water hammer acts on the buffer block. The time-delay component prevents the buffer block from opening the channel too quickly, allowing water to enter the exhaust space only after the water pressure stabilizes. This prevents water from rapidly entering the exhaust space and generating water hammer, thus protecting the sensor. The time-delay component also distributes the force of the water hammer, preventing the air pressure inside the exhaust space from rising rapidly and squeezing the sensor, which could overload and damage it. The exhaust component also allows internal gas to be discharged when the buffer block opens the channel, preventing the water and air from mixing and forming air masses. If these air masses are squeezed and broken, they will generate a large impact force, which could also cause a large impact on the sensor. This protects the sensor and ensures the control accuracy of the electronic pressure controller.

[0009] Preferably, the delay assembly includes a piston cylinder, a piston, a return spring, and a delay channel. There are two piston cylinders and two pistons. The two piston cylinders are symmetrically arranged on both sides of the connecting channel. The two pistons are slidably connected to the two piston cylinders respectively. A return spring is provided between the piston and the piston cylinder. A delay channel is provided on the piston. The buffer block is connected to the piston. A locking assembly for locking the piston is provided on the piston.

[0010] By connecting a buffer block to the piston, the piston is compressed. The delayed-release channel slows down the piston's exhaust speed, allowing the buffer block to open the connection channel after a delay. The buffer block is subjected to water pressure, and the piston's internal air pressure counteracts some of the pressure, preventing a rapid increase in air pressure within the exhaust space that could overload and damage the sensor. The locking mechanism locks the piston when the buffer block opens the connection channel, preventing piston movement and thus avoiding pressure disturbances within the connection channel caused by buffer block movement. This prevents the electronic pressure controller from affecting its accuracy and ensures the controller's detection precision. This method is simple in structure, requires no external power to open or close the buffer block, and does not affect the normal operation of the pressure controller, effectively improving its control accuracy.

[0011] Preferably, the exhaust assembly includes an exhaust channel, a one-way valve, a drain block, a pressure reducing channel, and a water inlet gap. The exhaust channel is located on the housing and communicates with both the exhaust space and the buffer space. The one-way valve is located inside the exhaust channel and flows from the exhaust space to the buffer space. The buffer space has a drain block on its side wall and a pressure reducing channel inside the drain block. The pressure reducing channel is inclined downwards at the end away from the buffer block along the side away from the center of the connecting channel. The pressure reducing channel cooperates with the exhaust channel. The buffer block has a water inlet gap that communicates with both the exhaust space and the buffer space.

[0012] The water inlet gap allows water to flow into the exhaust space. The small water inlet volume prevents rapid water flow into the exhaust space, thus avoiding the formation of an air mass and preventing the air mass from rupturing and causing impact, which could overload and damage the sensor. As water flows in, the internal air pressure of the exhaust space gradually increases until it equals the water pressure. The drain block, with its pressure-reducing channel angled downwards from the center of the connecting channel at the end away from the buffer block, creates negative pressure in the pressure-reducing channel when water flows inside the detection pipe. This makes the pressure inside the pressure-reducing channel lower than the pressure inside the exhaust space, causing the one-way valve to open and expel the internal air. When the buffer block is fully open, water hammer will not occur again, thus protecting the sensor. This invention relies on the pressure difference generated by the water flow in the pipe to expel the gas inside the exhaust space into the pipe, eliminating the need for external power to pump air into the pipe and avoiding the leakage problems that can easily occur with external power exhaust.

[0013] Preferably, the locking assembly includes a limiting plate, a sealing groove, and a float. The limiting plate is provided on the piston cylinder, and a sealing groove is formed between the limiting plate, the piston, and the piston cylinder. The sealing groove is located on the side of the piston facing away from the piston cylinder, and the upper part of the sealing groove is semi-circular. The delay channel is connected to the highest point of the sealing groove, and the float is located inside the sealing groove.

[0014] By setting up a float ball, a one-way valve effect is created at the delay channel after water enters the exhaust space. This prevents the piston from resetting under the action of the return spring, thus locking the piston and preventing the buffer block from shaking due to water pressure changes. This would cause fluctuations in water pressure inside the detection channel, resulting in detection errors in the pressure controller. When the water inside the pipe is emptied, the float ball falls, at which point the delay channel opens, and the piston can reset under the action of the return spring. Therefore, it is ensured that the buffer block can reset only when all the water inside the exhaust space is completely drained. The complete drainage of the water prevents the deposition of suspended matter inside the water, which would cause scale to adhere to the sensor and affect the sensor's detection accuracy, thereby ensuring the control accuracy of the pressure controller.

[0015] Preferably, two sliders are slidably mounted on the buffer block. Multiple protrusions are spaced apart on the sliders, and grooves are formed between the multiple protrusions. The grooves and protrusions of the two sliders cooperate with each other to form a water inlet gap. The side of the slider away from the protrusions cooperates with the side wall of the connecting channel. One of the protrusions is provided with a limiting protrusion. The buffer block is provided with a baffle. The baffle is located at the outlet of the water inlet gap inside the exhaust space.

[0016] The sliding of two sliders allows the protrusion and groove to engage, forming a water inlet gap. This gap creates a multi-bend channel, slowing down the kinetic energy of the water flow and thus reducing its speed. This further reduces the water inlet velocity into the exhaust space, preventing the water from rapidly entering and merging with the gas inside to form an air mass. This also prevents the air mass from bursting and causing impact, which could overload and damage the sensor. A baffle is installed at the outlet of the water inlet gap on one side of the exhaust space. This allows the incoming water to impact the baffle, slowing down the flow and changing its direction. This prevents high-pressure water from becoming a high-speed flow when passing through the water inlet gap, which could impact the sensor surface and damage the anti-corrosion coating, thus reducing the sensor's lifespan. The movement of the buffer block controls the slider's movement, increasing the width of the water inlet gap. This prevents impurities in the water from clogging the gap, which would prevent the drainage component from draining and cause water hammer when the buffer block is open. The limiting protrusion prevents the slider from completely closing under the influence of the water flow.

[0017] Preferably, the drainage block is divided into an installation block and an adjustment block. One side of the adjustment block is provided with an arc-shaped curved surface. The installation block and the adjustment block are threadedly connected. One of the pistons extends into the buffer space, and the installation block is connected to the piston.

[0018] The movement of the piston drives the drain block to move, preventing it from obstructing the water flow and thus avoiding energy loss and increased energy consumption of the water supply equipment. Furthermore, the drain block's unobstructed flow prevents negative pressure, thus avoiding a drop in pressure within the venting space. This prevents pressure controller errors, which in turn reduce the controller's accuracy, causing the pipeline pressure to be higher than the actual pressure. Consequently, the water supply equipment may operate under overload for extended periods and eventually be damaged. The drain block is divided into an installation block and an adjustment block. The length of the drain block can be adjusted according to the length and wall thickness of the installed pipeline, allowing it to adapt to different installation pipelines and improving the adaptability of the pressure sensor. The upper arc surface of the adjustment block allows it to fit against the pipe wall, restricting its rotational freedom and preventing it from rotating and falling off due to water flow impact.

[0019] Preferably, the limiting plate is provided with a push plate, the delay channel is provided with a tapered chamfer on one side of the sealing groove, the push plate is provided with a flexible scraper, the scraper is inclined, the vertical height of the scraper is greater than the buffer gap by 2mm-5mm, and the horizontal width of the scraper is less than the width of the delay channel by 1mm-2mm, and the scraper is provided with a hydrophilic coating.

[0020] By using a push plate, the float can be pushed to one side of the push plate when the piston moves to it. This prevents the float from being compressed and blocking the delay channel, which would prevent water from accumulating inside the piston cylinder and causing scale buildup, thus blocking the delay channel, affecting piston sealing, piston movement, and ultimately the normal operation of the pressure controller. The flexible scraper on the push plate can clear the delay channel when entering it. The delay channel has a tapered chamfer on one side of the sealing groove, making it easier for the flexible scraper to enter. The scraper is tilted, with its vertical height 2mm-5mm greater than the buffer gap and its horizontal width 1mm-2mm less than the width of the delay channel. This ensures that the delay channel remains open after the scraper enters, guaranteeing normal piston operation. The scraper has a hydrophilic coating, which acts as a guide, preventing water from accumulating inside the piston and causing air seals that prevent water from draining.

[0021] Preferably, the adjusting block has a slide rail that communicates with the pressure reduction channel, and a blocking block is elastically slidably installed inside the slide rail, the blocking block cooperating with the pressure reduction channel.

[0022] By setting up the block, the drain block can be blocked by the squeezing inside the pipe wall during movement, thus preventing the exhaust channel from being affected by external pressure, which would cause changes in the internal pressure of the exhaust space and affect the detection accuracy of the pressure controller.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. By setting up a buffer block, the sensor's detection channel is divided into an exhaust space and a buffer space. A delay component with a piston slows down the speed of the buffer block, delaying the opening of the detection channel. The exhaust component discharges the gas inside the exhaust space, thus preventing water from rapidly entering the exhaust space and causing water hammer. This prevents the sensor from being overloaded and damaged by water hammer impact. The delay component can also share the force generated by water hammer, thus preventing the gas pressure inside the exhaust space from rising rapidly and squeezing the sensor. This further prevents the sensor from being damaged by overload pressure, thereby ensuring the accuracy of the electronic pressure controller.

[0025] 2. By installing a drainage block inside the drainage component, the drainage block creates negative pressure inside the exhaust space by blocking the water flow inside the detection pipe, thereby expelling the gas inside the exhaust space. This prevents the water flow from mixing with the air to form an air mass, and avoids the large impact force generated when the air mass is squeezed and broken, which would cause a large impact on the sensor. This protects the electronic pressure controller. By expelling the gas inside the exhaust space into the detection pipe, exhaust can be achieved without external power to pump air. Therefore, it can avoid the leakage problem that is easy to cause by external power exhaust. Moreover, the structure is simple and the cost is low.

[0026] 3. By connecting the drain block to the piston, when the detection channel is fully opened, the movement of the piston drives the drain block to move, so that the drain block no longer obstructs the water flow. This avoids energy loss caused by the drain block obstructing the flow, which would increase the energy consumption of the water supply equipment. It also prevents negative pressure from forming inside the exhaust space, which would cause the detection pressure to be lower than the internal pressure of the pipeline, resulting in detection errors in the pressure controller. This would cause the water supply equipment to operate under overload for a long time and be easily damaged.

[0027] 4. By setting up the float ball, a one-way valve can be formed at the piston exhaust part after water enters the exhaust space, thereby locking the piston and preventing the piston from shaking due to water pressure changes. This would cause fluctuations in water pressure inside the detection channel and result in detection errors in the pressure controller. Locking the piston with the float ball can also prevent suspended matter in the water inside the exhaust space from accumulating and forming scale that adheres to the sensor, affecting the sensor's detection accuracy and thus ensuring the control accuracy of the pressure controller. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a cross-sectional view of the structure of the present invention when it is connected to the detection pipeline and the water supply equipment is started.

[0030] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle;

[0031] Figure 4 for Figure 2 Enlarged view of a section at point B in the middle;

[0032] Figure 5 This is a cross-sectional view of the structure of the present invention when it is connected to the detection pipeline and the internal pressure of the detection pipeline is stable;

[0033] Figure 6 for Figure 5 Enlarged view of a section at point C;

[0034] Figure 7 for Figure 5 Enlarged view of a section at point D;

[0035] Figure 8 This is a cross-sectional view of the structure of the present invention when it is connected to the detection pipeline and the water supply equipment is not in operation;

[0036] Figure 9 for Figure 8 Enlarged view of a section at point E in the middle.

[0037] In the diagram: 1. Housing; 2. Mounting base; 3. Connecting channel; 31. Connecting part; 32. Exhaust space; 33. Buffer space; 4. Sensor; 5. Buffer block; 6. Delay assembly; 61. Piston cylinder; 62. Piston; 63. Return spring; 64. Delay channel; 7. Exhaust assembly; 71. Exhaust channel; 72. One-way valve; 73. Drain block; 731. Mounting block; 732. Adjusting block; 74. Pressure reducing channel; 75. Inlet gap; 8. Locking assembly; 81. Limiting plate; 82. Sealing groove; 83. Float; 9. Slider; 91. Protrusion; 92. Groove; 93. Limiting protrusion; 10. Baffle; 11. Push plate; 12. Scraper; 13. Slide; 14. Block; 15. Connecting pipe; 16. Detection pipe. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] This invention provides an electronic pressure controller, referenced Figure 1 , Figure 2 , Figure 5 The system includes a housing 1 and a mounting base 2. The mounting base 2 is mounted on the housing 1. The housing 1 has a connecting channel 3, and a sensor 4 is installed inside the connecting channel 3. In use, the housing 1 is mounted to the connecting pipe 15 via the mounting base 2, so that the pressure controller can detect the internal pressure of the detection pipe 16 through the connecting pipe 15. At this time, water flows into the connecting channel 3, and the sensor 4 can detect the internal pressure of the detection pipe 16. The connecting channel 3 has a conical connecting part 31, and a buffer block 5 is slidably installed inside the connecting channel 3. The buffer block 5 cooperates with the connecting part 31, and the buffer block 5 divides the connecting channel 3 into an exhaust space 32 and a buffer space 33 through cooperation with the connecting part 31. The sensor 4 is located inside the exhaust space 32. A delay component 6 is installed on the housing 1. The delay component 6 includes two piston cylinders 61 symmetrically arranged on both sides of the housing 1 along the center of the connecting channel 3. A piston 62 is slidably installed in each of the two piston cylinders 61. A return spring 63 is connected between the piston 62 and the piston cylinder 61. A delay channel 64 is provided on piston 62. When the water supply equipment starts, the pressure inside the detection pipe 16 rises rapidly, resulting in a water hammer impact inside the connecting channel 3. The impact directly acts on the buffer block 5. At this time, the buffer block 5 squeezes piston 62. Since piston 62 is provided with a delay channel 64, piston cylinder 61 slowly exhausts air when piston 62 is squeezed, thereby reducing the movement speed of piston 62 when squeezed. This allows the buffer block 5 to delay opening the connecting channel 3, and only opens the connecting channel 3 when the pressure is relatively stable. In this way, when the buffer block 5 opens the connecting channel 3, a large water hammer impact inside the exhaust space 32 can be avoided, thereby avoiding damage to sensor 4 from the impact. This ensures the control accuracy of the pressure controller. The air pressure inside piston cylinder 61 can offset part of the pressure of piston 62, thereby avoiding the rapid compression of gas inside exhaust space 32, which would cause the air pressure inside exhaust space 32 to increase rapidly, causing sensor 4 to overload and be damaged. This further ensures the control accuracy of the electronic pressure controller.

[0040] refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7The housing 1 is equipped with an exhaust assembly 7. During the opening of the buffer block 5, the exhaust assembly 7 discharges the gas inside the exhaust space 32, preventing the water flow from mixing with the air and forming an air mass when the buffer block 5 is opened. This air mass, when compressed and broken, would generate a large impact force, potentially damaging the sensor 4. The exhaust assembly 7 includes an exhaust channel 71 on the housing 1, which is connected to both the exhaust space 32 and the buffer space 33. The buffer space 33 contains a drain block 73, which contains a pressure-reducing channel 74 connected to the exhaust channel 71. The end of the pressure-reducing channel 74 away from the buffer block 5 slopes downwards along the side away from the center of the connecting channel 3. The buffer block 5 has a water inlet gap 75. During installation, the housing... At time 1, the outlet of the pressure-reducing channel 74 away from the buffer block 5 is positioned opposite the water flow. Because the drain block 73 obstructs the water flow, the internal pressure of the pressure-reducing channel 74 is lower than the pressure in the detection pipe 16. The opening of the inlet gap 75 slows down the water inflow into the exhaust space 32, thus preventing the formation of air pockets. As water enters the exhaust space 32, the internal pressure gradually equals the pressure in the detection pipe 16. Since the pressure-reducing channel 74 is connected to the exhaust space 32 via the exhaust channel 71, a negative pressure is created between the pressure-reducing channel 74 and the exhaust space 32, causing gas to be discharged along the pressure-reducing channel 74. After the buffer block 5 opens the connecting channel 3, the gas is completely discharged, thus preventing the formation of air pockets that could damage the sensor 4 and ensuring the electronic pressure... The force controller's control accuracy is achieved by using a drainage block 73, which consists of a mounting block 731 and an adjusting block 732. One side of the adjusting block 732 has an arc-shaped curved surface. The mounting block 731 and adjusting block 732 are threadedly connected. By rotating the adjusting block 732, the length of the drainage block 73 can be adjusted according to the length of the connecting pipe 15 and the wall thickness of the detection pipe 16, improving the adaptability of the pressure sensor 4. The upper arc surface of the adjusting block 732 allows it to engage with the wall of the connecting pipe 15 or the detection pipe 16, thus limiting the rotational freedom of the adjusting block 732 and preventing it from rotating and falling off due to water flow impact. The piston 62 extends into the buffer space 33, and the mounting block 731 is connected to the piston 62, allowing the piston 62 to move and drive the drainage block 73 to move. The drain block 73 no longer obstructs water flow, thus preventing energy loss caused by obstruction and increased energy consumption of the water supply equipment. Furthermore, the drain block 73's absence of obstruction prevents negative pressure buildup, avoiding a drop in pressure within the exhaust space 32. This prevents detection errors in the pressure controller, reducing its accuracy and causing the pressure in the detection pipe 16 to exceed the actual pressure. Consequently, the water supply equipment may experience prolonged overload and damage. The regulating block 732 has a slide 13 connected to the pressure-reducing channel 74. A blocking block 14 is elastically slidably installed inside the slide 13. The blocking block 14 cooperates with the pressure-reducing channel 74. During the movement of the drain block 73, the pressure from the wall of the detection pipe 16 causes the blocking block 14 to seal the pressure-reducing channel 74.This prevents external pressure from affecting the interior of the exhaust passage 71, which could alter the internal pressure of the exhaust space 32 and affect the detection accuracy of the pressure controller.

[0041] refer to Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 8 , Figure 9 The piston 62 is equipped with a locking assembly 8, which includes a limiting plate 81 formed on the piston cylinder 61. A sealing groove 82 is formed between the limiting plate 81, the piston 62, and the piston cylinder 61. The upper part of the sealing groove 82 is semi-circular, and a float 83 is provided inside the sealing groove 82. A delay channel 64 is connected to the highest point of the sealing groove 82. During the movement of the piston 62, fluid inside the piston cylinder 61 flows out through the delay channel 64. The internal pressure of the piston cylinder 61 can push the float 83 open, thus preventing the float 83 from affecting the operation of the piston 62. When the piston 62 is reset by the return spring 63, the float 83 is blocked by the buoyancy of the water, thus preventing the piston 62 from moving. The piston 62 is locked in place by a reset spring 83 to prevent it from shaking due to water pressure changes. This prevents fluctuations in water pressure inside the connecting channel 3 and thus avoids detection errors in the pressure controller. The piston 62 is locked in place by a float ball 83. When the water inside the connecting channel 3 is emptied, the float ball 83 falls, and the delay channel 64 opens. The piston 62 can then be reset by the action of the reset spring 63. This ensures that the buffer block 5 can only be reset when all the water inside the exhaust space 32 has been completely drained. The complete drainage of the water prevents the deposition of suspended matter inside the water, which would cause scale to adhere to the sensor 4 and affect the detection accuracy of the sensor 4. This ensures the control accuracy of the pressure controller.

[0042] refer to Figure 2 , Figure 3 , Figure 5 , Figure 6The limiting plate 81 is equipped with a push plate 11. The delay channel 64 is located on one side of the sealing groove 82 and has a tapered chamfer. The push plate 11 is equipped with a flexible scraper 12, which is inclined and has a hydrophilic coating. When the piston 62 resets, the push plate 11 squeezes the float 83, causing the float 83 to move away from the highest point and to one side. This prevents the float 83 from being compressed and blocking the delay channel 64, which would prevent water from accumulating inside the piston cylinder 61 and causing scale buildup, which would block the delay channel 64 and affect the sealing performance of the piston 62, thus affecting the movement of the piston 62 and the normal operation of the pressure controller. The flexible scraper 12 on the push plate 11 allows the scraper 12 to enter the delay channel 64 when the piston 62 resets. When there are impurities inside the delay channel 64, the flexible scraper 12 can deform and completely block the delay channel 64, thus cleaning the delay channel 64. To prevent blockage of the delay channel 64 and ensure its proper functioning, the delay channel 64 is designed with a tapered chamfer on one side of the sealing groove 82. This allows the scraper 12 to enter the delay channel 64 more easily. The vertical height of the scraper 12 is 2mm greater than the buffer gap, and its horizontal width is 1mm less than the width of the delay channel. This ensures that the scraper 12 will not block the delay channel 64 after entering it, thus guaranteeing the normal operation of the piston 62. The scraper 12 has a hydrophilic coating, which acts as a guide to prevent water from accumulating inside the piston 62 and causing water to be trapped due to air seal. This prevents scale buildup that could block the delay channel 64, affect the sealing performance of the piston 62, and impair its movement, thereby affecting the normal operation of the pressure controller. The flexible scraper 12 is made of rubber or silicone. Of course, other materials can also be used, but it is necessary to ensure that the scraper 12 has a long service life.

[0043] refer to Figure 2 , Figure 5 , Figure 8Two sliders 9 are slidably mounted on the buffer block 5. Multiple protrusions 91 are evenly spaced on each slider 9, forming grooves 92 between them. The grooves 92 and protrusions 91 of the two sliders 9 cooperate to form a water inlet gap 75. This water inlet gap 75 creates multiple curved channels, slowing down the kinetic energy of the water flow as it enters, thus reducing the water flow speed and further decreasing the water inlet speed into the exhaust space 32. This prevents the water from rapidly entering the exhaust space 32 and combining with the internal gas to form an air mass. The impact of this air mass breaking could overload and damage the sensor 4. Therefore, the sensor 4 is further protected to ensure the control accuracy of the pressure controller. A baffle 10 is installed at the outlet of the water inlet gap 75 on one side of the exhaust space 32. This design allows water to enter and impact the baffle 10, slowing down the water flow and changing its direction. This prevents high-pressure water from becoming a high-speed flow when passing through the inlet gap 75, which could damage the anti-corrosion coating of the sensor 4 and reduce its lifespan. When the buffer block 5 opens the connecting channel 3, the two sliders 9 move radially along the buffer block 5, increasing the width of the inlet gap 75. This prevents impurities from accumulating in the inlet gap 75 and avoids blockage by impurities in the water, which could prevent the drainage component from draining and cause water hammer when the buffer block 5 is open. The limiting protrusion 93 prevents the sliders 9 from completely fitting together under the action of the water flow, thus closing the inlet gap 75.

[0044] Working principle: (Reference) Figures 1 to 9 During installation, measure the sum of the wall thicknesses of the connecting pipe 15 and the detection pipe 16. After measurement, rotate the adjusting block 732 to adjust the length of the drain block 73. The length of the drain block 73 should be 1-2 cm greater than the sum of the wall thicknesses of the connecting pipe 15 and the detection pipe 16, so that the drain block 73 protrudes into the inner wall of the detection pipe 16 after installation. At this time, the pressure controller can be installed on the connecting pipe 15. During installation, the outlet of the pressure reducing channel 74 needs to face the water flow direction of the detection pipe 16. At this time, the mounting base 2 can be connected to the connecting pipe 15. During the connection process, it is necessary to avoid the housing 1 from rotating. After the mounting base 2 is fixed, the electronic pressure controller can start working.

[0045] When the water supply equipment starts, water flows into the connecting channel 3 along the connecting pipe 15. Due to the obstruction of the buffer block 5, the water flows into the buffer space 33. The force generated by the water flow acts on the buffer block 5, which squeezes the piston 62, causing the piston cylinder 61 to slowly exhaust air along the delay channel 64, thus causing the buffer block 5 to move slowly. At this time, water flow is generated inside the detection pipe 16, and the regulating block 732 obstructs the water flow, so that the pressure at the outlet of the pressure reducing channel 74 is less than the pressure inside the detection pipe 16. At this time, the water flow enters the exhaust space 32 through the buffer space 33 along the water inlet gap 75. The water inlet gap 75 has multiple bends, which slows down the speed of the water flow entering the exhaust space 32. When the water flows into the exhaust space 32, it is blocked by the baffle 10. The buffer further slows down the water flow and changes its jet direction to prevent the high-speed water flow from merging with air to form an air mass. The resulting air mass, when compressed and broken, would generate a large impact force, potentially damaging sensor 4. It also prevents water from impacting the surface of sensor 4, thus protecting its anti-corrosion coating and reducing its lifespan. As water flows in, the pressure inside the exhaust space 32 gradually increases and eventually equals the pressure in the detection pipe 16. At this point, the pressure at the pressure reducing channel 74 is less than the pressure in the detection pipe 16, creating a negative pressure on both sides of the exhaust channel 71. This causes the one-way valve 72 to open, allowing gas to be discharged along the exhaust channel 71 into the detection pipe 16, thus completing the venting of the exhaust space 32. As the buffer block 5 moves, the buffer block 5 gradually... As the connecting channel 3 gradually opens, the internal pressure of the exhaust space 32 approaches the pressure of the buffer space 33. Therefore, when the buffer block 5 opens, no water hammer will occur, thus preventing water hammer from impacting the sensor 4 and causing overload damage, which would affect the control accuracy of the electronic pressure controller. During the retraction of the piston 62, the piston 62 pulls the mounting block 731 to move, so that the adjusting block 732 no longer obstructs the water flow, thereby preventing negative pressure from being generated at the pressure reducing channel 74. At this time, the internal pressure of the connecting pipe 15 is equal to the pressure of the detection pipe 16, thus preventing the pressure sensor 4 from generating detection errors. When the mounting block 731 drives the adjusting block 732 to move, the inner wall of the detection pipe 16 squeezes the block 14, causing the block 14 to block the pressure reducing channel 74, thus preventing... The pressure inside the exhaust channel 71 is affected by external pressure, causing changes in the internal pressure of the exhaust space 32, which affects the detection accuracy of the pressure controller. When the piston 62 is fully retracted, it is restricted by the piston cylinder 61 and cannot move upward. At this time, the float 83 blocks the delay channel 64 due to buoyancy, preventing the piston 62 from drawing air downward and thus locking the piston 62. This prevents the buffer block 5 from shaking due to water pressure changes, which could cause fluctuations in the water pressure inside the connecting channel 3 and lead to detection errors in the pressure controller. After the piston 62 is fully locked, the internal pressure of the detection pipe 16 is stable and there is no significant water hammer phenomenon. Therefore, the pressure controller can operate normally. When the buffer block 5 connects to the connecting channel 3, the slider 9 moves to the connecting part 31.At this point, due to the increased width of the connecting channel 3, the slider 9, lacking restraint, moves to both sides under water pressure, thereby increasing the width of the inlet gap 75. This allows impurities inside the inlet gap 75 to fall out, preventing blockage.

[0046] When the water supply equipment stops, the water inside the detection pipe 16 is discharged. At this time, the liquid level inside the connecting channel 3 gradually decreases, and the float 83 loses buoyancy and falls, thus opening the delay channel 64. At this time, the piston 62 is reset by the action of the return spring 63. When the piston 62 moves, the push plate 11 squeezes the float 83 to move towards the sealing groove 82, preventing the float 83 from continuously blocking the delay channel 64. As the piston 62 moves, the scraper 12 enters the delay channel 64 along the conical chamfer. When there are impurities inside the delay channel 64, the scraper 12 is flexible and can deform to completely block the delay channel 64. The movement of the piston 62 clears the delay channel 64, preventing blockage from affecting the normal operation of the pressure controller. When the scraper 12 is fully inside the delay channel 64, the hydrophilic coating on the surface of the scraper 12 plays a guiding role. The water inside the piston cylinder 61 is drained to prevent water from accumulating inside the piston 62 and becoming trapped due to air seal, thus preventing scale buildup that could block the delay channel 64 and affect the sealing of the piston 62, thus affecting the movement of the piston 62. When the piston 62 moves to its maximum stroke, the scraper is tilted, and the vertical height of the scraper 12 is greater than the buffer gap by 2mm, while the horizontal width of the scraper 12 is less than the width of the delay channel 64 by 1mm, so it cannot block the delay channel 64. When the piston 62 moves to its maximum stroke, the buffer block 5 and the connecting pipe 15 connection part 31 are fully engaged, and the adjusting block 732 protrudes again from the inner wall of the detection pipe 16. The slider 9 is squeezed inside the connecting channel 3 and restricted by the limiting protrusion 93, forming the smallest water inlet gap 75 again. This can protect the sensor 4 again when the water supply equipment is started next time.

[0047] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. An electronic pressure controller, comprising a housing, a mounting base, a connecting channel, and a sensor, wherein the mounting base is mounted on the housing for connecting the housing to a detection object, the housing has an internal connecting channel, and the sensor is mounted on the housing and located inside the connecting channel, characterized in that, A buffer block is slidably installed on the shell, and a conical connecting part is provided in the connecting channel. The buffer block cooperates with the connecting part, and the buffer block divides the connecting channel into an exhaust space and a buffer space. The shell is provided with a delay component and an exhaust component. The delay component controls the buffer block to move slowly when it is subjected to water pressure. The exhaust component relies on the water flow of the detected object to generate negative pressure and discharge the gas inside the exhaust space. The delay assembly includes a piston cylinder, a piston, a return spring, and a delay channel. There are two piston cylinders and two pistons. The two piston cylinders are symmetrically arranged on both sides of the connecting channel. The two pistons are slidably connected to the two piston cylinders respectively. A return spring is provided between the pistons and the piston cylinders. A delay channel is provided on the piston. A buffer block is connected to the piston. A locking assembly for locking the piston is provided on the piston. The exhaust assembly includes an exhaust channel, a one-way valve, a drain block, a pressure reducing channel, and a water inlet gap. The exhaust channel is located on the housing and is connected to the exhaust space and the buffer space. The one-way valve is located inside the exhaust channel and flows from the exhaust space to the buffer space. The side wall of the buffer space is provided with a drain block, and the drain block is provided with a pressure reducing channel. The end of the pressure reducing channel away from the buffer block is inclined downward along the side away from the center of the connecting channel. The pressure reducing channel and the exhaust channel cooperate with each other. The buffer block is provided with a water inlet gap that is connected to the exhaust space and the buffer space respectively. Two sliders are slidably mounted on the buffer block. Multiple protrusions are spaced apart on the sliders, and grooves are formed between the protrusions. The grooves and protrusions of the two sliders cooperate with each other to form a water inlet gap. The side of the slider away from the protrusions cooperates with the side wall of the connecting channel. One of the protrusions is provided with a limiting protrusion. A baffle is provided on the buffer block. The baffle is located at the outlet of the water inlet gap inside the exhaust space.

2. An electronic pressure controller according to claim 1, characterized in that: The locking assembly includes a sealing groove and a float. A limiting plate is provided on the piston cylinder. A sealing groove is formed between the limiting plate, the piston, and the piston cylinder. The sealing groove is located on the side of the piston facing away from the piston cylinder. The upper part of the sealing groove is semi-circular. The delay channel is connected to the highest point of the sealing groove. The float is located inside the sealing groove.

3. An electronic pressure controller according to claim 1, characterized in that: The drainage block is divided into an installation block and an adjustment block. One side of the adjustment block is set with an arc-shaped curved surface. The installation block and the adjustment block are threaded together. One of the pistons extends into the buffer space and is connected to the piston.

4. An electronic pressure controller according to claim 2, characterized in that: The limiting plate is equipped with a push plate, and the delay channel is located on one side of the sealing groove with a tapered chamfer. The push plate is equipped with a flexible scraper, which is inclined. The vertical height of the scraper is 2mm-5mm greater than the buffer gap, and the horizontal width of the scraper is 1mm-2mm less than the width of the delay channel. The scraper is equipped with a hydrophilic coating.

5. An electronic pressure controller according to claim 3, characterized in that: The adjusting block has a slide that connects to the pressure reducing channel. A blocking block is elastically slidably installed inside the slide, and the blocking block cooperates with the pressure reducing channel.

Images