A pressure controller

Abstract

The present invention relates to the field of pressure control technology, and discloses a pressure controller, including a controller body, a water inlet pipe installed on the controller body, and a check valve assembly, wherein the water inlet pipe includes a connected water inlet channel and an expansion chamber, an extension pipe corresponding to the water inlet pipe and provided with a flow channel hole is fixedly installed in the controller body, and the check valve assembly includes a plugging member and a second piston that are elastically slidably arranged and fixedly connected by a connecting rod, and the plugging member is used to block the water inlet channel. The present invention forms a retention area by improving the check valve assembly, and the retention area can temporarily store impurities filtered out by the filter assembly, so that the impurities will not pass through the filter assembly and enter the extension pipe to affect the check effect of the check valve assembly, and will not flow back into the water pump after the water pump stops working. Since no impurities will accumulate in the water pump, the wear of the water pump impeller will not increase when the water pump is started, thereby improving the service life of the water pump.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure control, and in particular to a pressure controller. Background Art

[0002] The pressure controller is a working medium (oil, gas, water) that directly acts on the metal diaphragm. The deformation of the metal diaphragm reflects the pressure of the working medium and outputs a detection signal or a control signal. The pressure controller uses a metal 316L diaphragm sensor, which can be used for neutral oil, gas medium and water. When the medium is water, the water inlet of the pressure controller is connected to the water outlet of the water pump. After the water enters the liquid cavity of the pressure controller, the water flow pressure controls the deformation of the metal diaphragm to detect the change of the water flow pressure. When the water flow pressure value is within the set range, the water pump is controlled to work through the control system. Otherwise, the water pump stops working. Finally, the water is discharged through the water outlet of the pressure controller.

[0003] A water pump pressure controller generally includes a check valve assembly, which is installed between the water inlet of the pressure controller and the liquid chamber of the pressure controller to block the water inlet when the water pump is turned off. However, when the water delivered by the water pump contains impurities, the impurity particles will adhere to the check valve and the inner wall of the water inlet, thereby affecting the fit between the check valve and the water inlet and affecting the sealing performance. For this reason, technical improvements have been made to the check valve assembly in the prior art.

[0004] For example, the Chinese invention patent with application number CN202310754315.4, publication (announcement) number CN116838588B, and name “Water Pump Pressure Controller” discloses “a controller body, a controller body having a liquid cavity, a controller body having a water inlet channel, the water inlet channel being connected to the liquid cavity, and a check valve member being provided in the water inlet channel so that the water inlet channel is unidirectionally conductive toward the liquid cavity, and a filter member for filtering solid impurities in the liquid is also provided in the water inlet channel, and the filter member is located on the side of the check valve member away from the liquid cavity. The liquid is filtered by the filter member to reduce the entry of solid impurities, and the influence of impurity particles on the check valve member on the check effect, so that the sealing effect of the check valve member on the water inlet channel is more stable”, and the impurities on the filter net can be cleaned by the elastic deformation of the filter net itself, and a reset spring and a spiral rod are provided so that each time the water pump switches from starting to shutting down, the scraper member cleans the flexible filter net.

[0005] The water pump pressure controller provided by the above invention patent, although the impurities in the water can be filtered by improving the structure of the check valve assembly, thereby reducing the influence of impurity particles on the check valve part's check effect. However, its disadvantage is that since the impurities in the water are filtered by the filter, although the impurities will not cross the filter and affect the check effect of the check valve, the impurities will accumulate on the filter and between the filter and the water outlet of the water pump. When the water pump stops working, the impurities will inevitably accumulate in the water between the filter and the water outlet of the water pump. Moreover, when the water pump stops working, the impurities on the filter are cleaned by the scraper, and the cleaned impurities will also be directly mixed in the water between the filter and the water outlet of the water pump. After that, the water mixed with a large amount of impurities will flow back into the water pump through the water outlet of the water pump and accumulate in the water pump. When the water pump is started again, the presence of impurities will greatly increase the wear of the water pump impeller, thereby causing rapid damage to the water pump. Summary of the invention

[0006] The object of the present invention is to provide a pressure controller to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a pressure controller, comprising a controller body, a water inlet pipe installed on the controller body, and a check valve assembly, wherein the water inlet pipe comprises a connected water inlet channel and an expansion chamber, an extension pipe corresponding to the water inlet pipe and provided with a flow channel hole is fixedly installed in the controller body, the check valve assembly comprises a plugging member and a second piston which are elastically slidably arranged and fixedly connected by a connecting rod, the plugging member is used to block the water inlet channel, the second piston is dynamically sealed in the extension pipe, a filter assembly is installed at one end of the extension pipe close to the plugging member, and a retention area located in the expansion chamber is formed between the filter assembly and the plugging member;

[0008] The inner wall of the retention area is provided with a sponge connected to the water inlet channel;

[0009] The high-pressure water flow entering from the water inlet channel pushes the blocking member and the second piston to slide elastically synchronously so that the water flows into the controller body from the flow channel hole after being filtered by the filter assembly. When the check valve assembly performs the non-return operation, the blocking member slides elastically in the opposite direction due to the loss of the impact of the high-pressure water flow, so that the blocking member first blocks the water inlet channel and then the second piston passes over the flow channel hole and pushes the water between the second piston and the filter assembly to impact the filter assembly to clean the impurities on the filter assembly to the retention area. The water containing impurities in the retention area is adsorbed by the sponge and then discharged to the water inlet channel.

[0010] In the above-mentioned pressure controller, the water inlet pipe is provided with a connected annular hole and a circular hole, the annular hole is connected to the sponge, and the circular hole is connected to the water inlet channel. The water containing impurities in the retention area is adsorbed by the sponge and then discharged to the water inlet channel through the annular hole and the circular hole in sequence.

[0011] The above-mentioned pressure controller, the sealing part includes a first piston, a limit plate, a connecting rod, and a circular ring that are fixedly connected. The first piston is dynamically sealed and plugged into the water inlet channel. The limit plate abuts and cooperates with the inner port surface of the water inlet channel. The circular ring is fixedly connected to the limit plate through the connecting rod. The outer circumferential surface of the circular ring is embedded in a sleeve with a sealing ring that slides in a sealing manner with the inner wall of the expansion chamber.

[0012] The above-mentioned pressure controller is provided with a bearing ring in the expansion chamber, and the bearing ring includes an outer circular plate, an inner circular plate and a side edge. The same end faces of the outer circular plate and the inner circular plate are fixedly connected to the side edge. The sponge is filled in the space formed between the outer circular plate and the inner circular plate. A plurality of side holes connected to the annular hole are opened on the side edge, and a plurality of flow holes are opened on the inner circular plate.

[0013] In the above-mentioned pressure controller, the inner wall of the inner circular plate is flush with the inner wall of the expansion chamber, the outer circumferential surface of the circular ring is provided with a ring groove, and at least two sealing rings are embedded in the circular ring. The ring groove is located between the two sealing rings, and the sealing member is driven by the high-pressure water flow so that the plurality of flow holes are located between the two sealing rings so that the circular ring seals the annular hole and the plurality of flow holes.

[0014] In the above-mentioned pressure controller, the bearing ring is elastically slidably arranged, and the lower half of the annular groove is fixedly installed with an arc-shaped baffle to block the lower half of the annular groove to form a containing area. After the circular ring blocks the annular hole and a plurality of flow holes, as the sealing member continues to be pushed by the high-pressure water flow, the circular ring pushes the bearing ring to slide elastically, causing the sponge to be compressed and deformed, squeezing out the dirty water inside and flowing along the bottom surface of the annular groove to the containing area for collection.

[0015] The above-mentioned pressure controller has an annular socket for the outer circular plate to be slidably inserted and an inner concave socket for the inner circular plate to be slidably inserted on the controller body, and a compression spring is embedded in the sponge, one end of the compression spring abuts against the end face of the controller body, and the other end abuts against the inner wall of the bearing ring, and the elastic sliding of the bearing ring is achieved based on the elastic force of the compression spring.

[0016] In the above-mentioned pressure controller, the inner side surface of the side edge extends to the inner side of the inner circular plate and abuts against the side surface of the annular groove, so that the side surface of the annular groove drives the bearing ring to slide elastically by pushing the side edge.

[0017] The above-mentioned pressure controller, the filter assembly includes a filter element and a cleaning element, the filter element includes a mounting circular frame fixedly connected to the extension tube and a filter screen fixedly mounted on the inner side of the mounting circular frame, the cleaning element is rotatably mounted on the inner side of the mounting circular frame, and the filter screen is cleaned by rotating the cleaning element.

[0018] The above-mentioned pressure controller, the cleaning part includes a rotating ring, a cleaning brush and a plurality of blades arranged equidistantly in the circumferential direction, the rotating ring is rotatably connected to the mounting frame, the cleaning brush is fixedly mounted on the rotating ring, the bristles of the cleaning brush abut against the filter, and the plurality of blades are fixedly mounted on the rotating ring, the blades are arranged in a curved surface so that when the high-pressure water flow flows, the plurality of blades are driven to rotate and then the cleaning brush is driven to rotate to automatically clean the filter.

[0019] Beneficial effects: In the above technical scheme, the present invention provides a pressure controller, which forms a retention area by improving the check valve assembly. The retention area can temporarily store impurities filtered out by the filter assembly, so that the impurities will not pass through the filter assembly and enter the extension pipe to affect the check effect of the check valve assembly, and will not flow back into the water pump after the water pump stops working. Since no impurities will accumulate in the water pump, the wear of the water pump impeller will not increase when the water pump is started, and the service life of the water pump is improved, which can effectively solve the shortcomings of the prior art.

[0020] At the same time, the special non-return mode of the check valve assembly used in the present invention can not only utilize the sealing member to block the water inlet channel so that impurities will not flow back into the water pump to protect the water pump impeller from wear; but also utilize the second piston to block the flow channel hole to realize the non-return effect of the check valve assembly, and the water passing through the second piston is filtered by the filter assembly, so the second piston will not be affected by impurities when blocking the flow channel hole, and a stable non-return effect can be achieved; at the same time, after the second piston blocks the flow channel hole, it can continue to slide toward the water inlet pipe so that the water between the second piston and the filter assembly generates a driving force to impact the filter assembly, thereby cleverly achieving the flushing and cleaning of the filter assembly, and the cleaned impurities are retained in the retention area and will not directly flow back to the water pump. It can be seen that the check valve assembly in the present invention plays multiple roles in the working process and produces unexpected technical effects;

[0021] Furthermore, when the water pump is started to allow high-pressure water to flow into the water inlet channel, the high-pressure water pushes the first piston to slide on one side, and on the other side, part of the high-pressure water flows through the circular hole and the annular hole in sequence into the sponge, so that the impurities adsorbed in the sponge flow out to the retention area. It can be seen that when the high-pressure water flows into the pressure controller, the high-pressure water produces an unexpected technical effect of cleaning the impurities in the sponge;

[0022] At the same time, the present invention utilizes the power of high-pressure water flow, which can not only play the role of washing the sponge, but also can drive the ring to first block a number of flow holes so that the high-pressure water flow can be stably transported, and can also drive the ring to squeeze out the internal water of the sponge. It can be seen that the introduction of high-pressure water flow in the present invention produces multiple unexpected technical effects;

[0023] Moreover, the provision of the circular ring in the present invention not only plays the role of supporting the compression spring, but also plays the role of squeezing out the dirty water in the sponge and isolating and storing the squeezed dirty water, so that one structure produces multiple functions, greatly improving the utilization rate of the circular ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0025] Figure 1 A schematic cross-sectional view of a pressure controller provided by an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the cross-sectional structure between the check valve assembly, the water inlet pipe and the controller body in the initial state provided by an embodiment of the present invention;

[0027] Figure 3 The embodiment of the present invention provides Figure 2 A schematic diagram of the enlarged structure of part A;

[0028] Figure 4 A schematic cross-sectional view of the structure when the inner wall of the annular groove provided by an embodiment of the present invention abuts against the side edge of the bearing ring;

[0029] Figure 5 The embodiment of the present invention provides Figure 4 A schematic diagram of the enlarged structure of part B in FIG.

[0030] Figure 6 A schematic diagram of a disassembled check valve assembly provided in an embodiment of the present invention;

[0031] Figure 7 A schematic structural diagram of a blocking member provided by an embodiment of the present invention from a first perspective;

[0032] Figure 8 A schematic structural diagram of a blocking member provided by an embodiment of the present invention from a second viewing angle;

[0033] Fig. 9 A schematic structural diagram of a load-bearing ring provided by an embodiment of the present invention from a first viewing angle;

[0034] Fig.10 A schematic structural diagram of a load-bearing ring provided by an embodiment of the present invention from a second viewing angle;

[0035] Fig.11 A schematic diagram of the structure of a filter assembly provided in an embodiment of the present invention;

[0036] Fig.12 A schematic diagram of the disassembly of the filter assembly provided in an embodiment of the present invention;

[0037] Fig.13 The embodiment of the present invention provides Fig.12 Schematic diagram of the enlarged structure of part C;

[0038] Fig.14 A schematic cross-sectional view of the plugging member, the bearing ring and the filter assembly provided in an embodiment of the present invention;

[0039] Fig.15 The embodiment of the present invention provides Fig.14 Schematic diagram of the enlarged structure of part D in FIG.

[0040] Description of reference numerals:

[0041] 1. Blocking member; 101. Limiting plate; 102. Circular ring; 1021. Circular groove; 1022. Abutting surface; 103. Connecting rod; 1031. Sliding hole; 104. Sealing ring; 105. Arc baffle; 106. First piston; 2. Bearing ring; 201. Outer circular plate; 202. Inner circular plate; 2021. Flow hole; 203. Side; 2031. Side hole; 3. Filter element; 301. Mounting circular frame; 3011. Mounting hole; 3012. Baffle; 302. Filter screen; 4. Cleaning member; 401. Rotating ring; 4 02. Cleaning brush; 403. Blade; 5. Second piston; 6. Cross bar; 7. Vertical plate; 8. Guide rod; 9. Tension spring; 10. Guide tube; 11. Connecting rod; 12. Extension tube; 1201. Flow channel hole; 13. Sponge; 14. Compression spring; 15. Controller body; 1501. Liquid chamber; 1502. Annular socket; 1503. Concave socket; 16. Water inlet pipe; 1601. Water inlet channel; 1602. Annular hole; 1603. Round hole; 1604. Expansion chamber; 1605. Fixing rod; 17. Water outlet pipe. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0043] like Figure 1-15As shown, a pressure controller provided by an embodiment of the present invention comprises a controller body 15, a water inlet pipe 16 installed on the controller body 15, and a check valve assembly, wherein the water inlet pipe 16 comprises a connected water inlet channel 1601 and an expansion chamber 1604, an extension pipe 12 corresponding to the water inlet pipe 16 and provided with a flow channel hole 1201 is fixedly installed in the controller body 15, the check valve assembly comprises a plugging member 1 and a second piston 5 elastically slidably arranged and fixedly connected by a connecting rod 11, the plugging member 1 is used to plug the water inlet channel 1601, the second piston 5 is dynamically sealed and arranged in the extension pipe 12, a filter assembly is installed at one end of the extension pipe 12 close to the plugging member 1, and a retention area located in the expansion chamber 1604 is formed between the filter assembly and the plugging member 1;

[0044] The inner wall of the retention area is provided with a sponge 13 connected to the water inlet channel 1601;

[0045] The high-pressure water flow entering from the water inlet channel 1601 pushes the blocking member 1 and the second piston 5 to slide elastically synchronously so that the water flows into the controller body 15 from the flow channel hole 1201 after being filtered by the filter assembly. When the check valve assembly performs the non-return operation, the blocking member 1 elastically slides in the opposite direction due to the loss of the impact of the high-pressure water flow, so that the blocking member 1 first blocks the water inlet channel 1601, and then the second piston 5 passes over the flow channel hole 1201 and pushes the water between the second piston 5 and the filter assembly to impact the filter assembly to clean the impurities on the filter assembly to the retention area. The water containing impurities in the retention area is adsorbed by the sponge 13 and then discharged to the water inlet channel 1601.

[0046] The pressure controller provided in this embodiment is used in conjunction with a water pump. The words related to directions and positions involved in this embodiment are relative to the accompanying drawings. The "dynamic seal" involved in this embodiment refers to sliding and sealing. Specifically, a water inlet pipe 16 is fixedly installed on one side of the controller body 15, and a water outlet pipe 17 is installed on the other side. The controller body 15 has a liquid cavity 1501 that is connected to both the water inlet pipe 16 and the water outlet pipe 17. The pressure detection mechanism is arranged in the liquid cavity 1501. The water entering the liquid cavity 1501 from the water inlet pipe 16 flows out through the water outlet pipe 17 after being detected by the pressure detection mechanism, and the operation and stop of the water pump are controlled by the control system according to the change of pressure. The pressure detection mechanism and the control system are both existing technologies and are not described here. The water inlet pipe 16 is connected to the output port of the water pump, and the check valve assembly is located between the liquid cavity 1501 and the water inlet pipe 16. The diameter of the water inlet channel 1601 is smaller than the diameter of the expansion chamber 1604. The water inlet channel 1601 is close to one side of the water pump, and the expansion chamber 1604 is close to one side of the controller body 15. The water output from the water pump passes through the water inlet channel 1601 and the expansion chamber 1604 in sequence. The extension tube 12 is fixedly installed in the controller body 15. The outer circumferential surface of the extension tube 12 is sealed and fitted with the inner wall of the controller body 15. The extension tube 12 is connected with the expansion chamber 1604. The filter assembly is located between the extension tube 12 and the expansion chamber 1604. After the high-pressure water flows out of the expansion chamber 1604, it is filtered by the filter assembly and enters the extension tube 12. The flow channel hole 1201 is connected with the liquid chamber 1501. The high-pressure water entering the extension tube 12 flows into the liquid chamber 1501 through the flow channel hole 1201 and flows out from the water outlet pipe 17 after the pressure is detected by the pressure detection mechanism. The filter assembly is fixedly installed on the controller body 15 or fixedly installed on the end of the extension tube 12. The extension tube 12, the water inlet pipe 16, the second piston 5 and the sealing member 1 are all coaxial, the connecting rod 11 slides through the filter assembly, one end of the connecting rod 11 is fixedly connected to the sealing member 1, and the other end is fixedly connected to the second piston 5, the sealing member 1 is used to block the water inlet channel 1601 (blocking the water inlet channel 1601 means that the water inlet channel 1601 is not connected to the expansion chamber 1604), and the second piston 5 is used to block the flow channel hole 1201 (blocking the flow channel hole 1201 means that the flow channel hole 1201 is not connected to the expansion chamber 1604). A cross bar 6 is fixedly installed on the second piston 5, and a guide rod 8 is fixedly installed on the cross bar 6 through a vertical plate 7. The number of the guide rods 8 is multiple and at least two, and the multiple guide rods 8 are equidistantly arranged circumferentially. A guide tube 10 is fixedly installed in the liquid chamber 1501 and is slidably plugged into the multiple guide rods 8 in a one-to-one correspondence. Each guide tube 10 is sleeved with a tension spring 9, one end of the tension spring 9 is fixedly connected to the inner wall of the liquid chamber 1501, and the other end is fixedly connected to the vertical plate 7. Based on the elastic force of the tension spring 9, the elastic sliding of the second piston 5 and the sealing member 1 is achieved.In the initial state, the water pump does not work. Under the action of the elastic force of the tension spring 9, the second piston 5 blocks the flow channel hole 1201 to prevent the liquid chamber 1501 from communicating with the expansion chamber 1604. At the same time, the blocking member 1 blocks the water inlet channel 1601 to prevent the water inlet channel 1601 from communicating with the expansion chamber 1604.

[0047] The retention area is located between the filter assembly and the blocking member 1, and the inner wall of the retention area is provided with a sponge 13 connected to the water inlet channel 1601. The function of the sponge 13 is similar to that of the filter assembly, and is used to adsorb impurities so that water can pass through the sponge 13 but impurities will not pass through the sponge 13, so that the impurities located in the retention area will not pass through the sponge 13 to enter the water inlet channel 1601 and then enter the water pump to cause damage to the water pump impeller. At the same time, it will not pass through the filter assembly to enter the extension tube 12, so that the impurities will not affect the blocking effect of the second piston 5 on the flow channel hole 1201, that is: the retention area is used to temporarily store impurities filtered out by the filter assembly, so that the impurities will not cross the filter assembly to enter the extension tube 12, nor will they cross the sponge 13 to flow back into the water pump.

[0048] Its working principle is as follows: first, the port of the water inlet pipe 16 is connected to the output end of the water pump. In the initial state, based on the elastic force of the tension spring 9, the second piston 5 blocks the flow channel hole 1201 so that the liquid chamber 1501 and the expansion chamber 1604 are not connected. At the same time, the blocking member 1 blocks the water inlet channel 1601 so that the water inlet channel 1601 and the expansion chamber 1604 are not connected. Then, the water pump is started, and the output end of the water pump outputs a high-pressure water flow to impact the end face of the blocking member 1. After the blocking member 1 generates a driving force, it drives the second piston 5 to move away from the water inlet pipe synchronously through the connecting rod 11. 16, the sliding of the second piston 5 drives the cross bar 6, the vertical plate 7 and multiple guide rods 8 to slide along, and the sliding direction is the axial direction of the guide tube 10. During the sliding of the vertical plate 7, multiple tension springs 9 are pulled to elastically extend. With the continuous sliding of the blocking member 1 and the second piston 5, the water inlet channel 1601 and the flow channel hole 1201 are both connected, so that the high-pressure water flows from the water inlet channel 1601 into the expansion chamber 1604, and then enters the extension tube 12 through the filtration of the filter assembly, and enters the controller body 15 through the flow channel hole 1201. When the water pump stops working, the high-pressure water flow disappears. Due to the loss of the impact force of the high-pressure water flow, the elastic force of the tension spring 9 is released, thereby driving the second piston 5 and the blocking member 1 to slide toward the direction of the water inlet pipe 16. During this process, the blocking member 1 first blocks the water inlet channel 1601, and then the second piston 5 blocks the flow channel hole 1201. Then the blocking member 1 and the second piston 5 continue to slide. At this time, the sliding of the second piston 5 causes the water between the second piston 5 and the filter assembly to impact the filter assembly so that impurities on the filter assembly are removed and fall into the retention area. The impurities are mixed in the water in the retention area. Since the water inlet channel 1601 is blocked by the blocking member 1, the water mixed with impurities in the retention area is filtered by the sponge 13 and enters the water inlet channel 1601 under the pushing action of the second piston 5, and then flows back to the water pump. The water mixed with impurities will not directly enter the water pump. Since no impurities will accumulate in the water pump, the wear of the water pump impeller will not increase when the water pump is started, the service life of the water pump is improved, and the shortcomings of the prior art can be effectively solved.

[0049] At the same time, the special non-return mode of the non-return valve assembly in the present invention can not only utilize the blocking member 1 to block the water inlet channel 1601 so that impurities will not flow back into the water pump to protect the water pump impeller from wear; and the second piston 5 can be used to block the flow channel hole 1201 to achieve the non-return effect of the non-return valve assembly, and the water passing through the second piston 5 is filtered by the filter assembly, so the second piston 5 will not be affected by impurities when blocking the flow channel hole 1201, and a stable non-return effect can be achieved; at the same time, after the second piston 5 blocks the flow channel hole 1201, it can continue to slide toward the water inlet pipe 16 so that the water between the second piston 5 and the filter assembly generates a driving force to impact the filter assembly, thereby cleverly achieving the flushing and cleaning of the filter assembly, and the cleaned impurities are retained in the retention area and will not directly flow back to the water pump. It can be seen that the non-return valve assembly in the present invention plays multiple roles in the working process and produces unexpected technical effects.

[0050] Among them, the water inlet pipe 16 is provided with an annular hole 1602 and a circular hole 1603 which are connected to each other. The annular hole 1602 is connected to the sponge 13, and the circular hole 1603 is connected to the water inlet channel 1601. The water containing impurities in the retention area is adsorbed by the sponge 13 and then discharged to the water inlet channel 1601 through the annular hole 1602 and the circular hole 1603 in sequence. Specifically, there are a plurality of circular holes 1603 which are equidistantly arranged in the circumferential direction. When the second piston 5 pushes the water between the second piston 5 and the filter assembly to generate a driving force to impact the filter assembly to clean the impurities on the filter assembly into the retention area, the water containing impurities in the retention area is filtered by the sponge 13 and then passes through the annular hole 1602 and the circular hole 1603 in sequence to enter the water inlet channel 1601, and then flows back to the water pump.

[0051] Specifically, the sealing member 1 includes a first piston 106, a limit plate 101, a connecting rod 103, and a ring 102 that are fixedly connected. The first piston 106 is dynamically sealed and plugged into the water inlet channel 1601. The limit plate 101 abuts against the inner port surface of the water inlet channel 1601 to limit the sealing member 1. The ring 102 is fixedly connected to the limit plate 101 through the connecting rod 103. The outer peripheral surface of the ring 102 is embedded with a sealing ring 104 that slides in a sealing manner with the inner wall of the expansion chamber 1604. Specifically, the first piston 106 is used to block the water inlet channel 1601, the limit plate 101 is used to limit the sealing member 1, the center of the limit plate 101 is fixedly connected to one end of the connecting rod 11, the connecting rod 103 is used to fix the limit plate 101 and the ring 102, the ring 102 is used to support the sealing ring 104, the sealing ring 104 is used to seal so that impurities and water in the retention area will not pass through the sealing member 1 and enter 1061, and can only enter the water inlet channel 1601 through the sponge 13, the annular hole 1602, and the circular hole 1603, thereby filtering the water in the retention area before entering the water inlet channel 1601, wherein the port of the circular hole 1603 away from the sponge 13 is located on the right side of the first piston 106. When the first piston 106 finishes sliding out of the water inlet channel 1601 , the water inlet channel 1601 is opened. At this time, the high-pressure water flows out through the water inlet channel 1601 and then flows into the expansion chamber 1604 from the inner circle of the ring 102 , and finally flows into the controller body 15 through the flow channel hole 1201 .

[0052] Through the above-mentioned structural design, when the water pump is started and the high-pressure water flow enters the water inlet channel 1601, the high-pressure water flow pushes the first piston 106 to slide on one side, and on the other side, part of the high-pressure water flow passes through the circular hole 1603 and the annular hole 1602 in sequence into the sponge 13, so that the impurities adsorbed in the sponge 13 flow out to the retention area. It can be seen that when the high-pressure water flow enters the pressure controller, the high-pressure water flow produces an unexpected technical effect of cleaning the impurities in the sponge 13.

[0053] In this embodiment, a bearing ring 2 is provided in the expansion chamber 1604, and the bearing ring 2 includes an outer circular plate 201, an inner circular plate 202 and a side edge 203. The same end faces of the outer circular plate 201 and the inner circular plate 202 are fixedly connected to the side edge 203. The sponge 13 is filled in the space formed between the outer circular plate 201 and the inner circular plate 202. The side edge 203 is provided with a plurality of side holes 2031 connected to the annular hole 1602, and the inner circular plate 202 is provided with a plurality of flow holes 2021. Specifically, in the initial state, the outer side surface of the side edge 203 is sealed and fitted with the end surface of the annular hole 1602, and the side hole 2031 is used to communicate with the annular hole 1602, so that the water filtered by the sponge 13 enters the annular hole 1602 through the side hole 2031. Similarly, the high-pressure water flow entering the annular hole 1602 enters the sponge 13 through the side hole 2031 to clean the impurities in the sponge 13, so as to improve the service life of the sponge 13. The flow holes 2021 are used to connect the sponge 13 with the retention area. When the water pump stops working, the water in the retention area enters the sponge 13 through the flow holes 2021 for filtration.

[0054] Furthermore, the inner wall of the inner circular plate 202 is flush with the inner wall of the expansion chamber 1604, and an annular groove 1021 is provided on the outer circumferential surface of the ring 102. At least two sealing rings 104 are embedded in the ring 102. When there are two sealing rings 104, the annular groove 1021 is located between the two sealing rings 104. When the sealing member 1 is pushed by the high-pressure water flow, the plurality of flow holes 2021 are driven to be located between the two sealing rings 104 so that the ring 102 blocks the annular hole 1602 and the plurality of flow holes 2021. Specifically, in the initial state, the ring 102 is staggered with the plurality of flow holes 2021 so that the water in the retention area can enter the sponge 13 through the flow holes 2021. When the water pump is started, the high-pressure water flow pushes the plugging member 1 to slide elastically, and the elastic sliding of the plugging member 1 drives the ring 102 to slide, so that the annular groove 1021 continuously covers the plurality of flow holes 2021. Before the first piston 106 finishes sliding out of the water inlet channel 1601, the annular groove 1021 covers all the plurality of flow holes 2021. At this time, several flow holes 2021 are located between the two compression springs 14, so that several flow holes 2021 are blocked. After several flow holes 2021 are blocked by the ring 102, the effect achieved is to block the annular hole 1602 and the circular hole 1603. Thereafter, when the water inlet channel 1601 is connected, the high-pressure water flow no longer passes through the circular hole 1603 and the annular hole 1602 to enter the sponge 13, but all passes through the water inlet channel 1601 to enter the expansion chamber 1604, so as to improve the stability of the high-pressure water flow.

[0055] Furthermore, the bearing ring 2 is elastically slidably arranged, and an arc-shaped baffle 105 is fixedly installed on the lower half of the annular groove 1021 to block the lower half of the annular groove 1021 to form a containing area. After the circular ring 102 blocks a number of flow holes 2021, as the sealing member 1 continues to be pushed by the high-pressure water flow, the circular ring 102 pushes the bearing ring 2 to slide elastically, causing the sponge 13 to be compressed and deformed to squeeze out the dirty water inside and flow along the bottom surface of the annular groove 1021 to the containing area for collection. Specifically, the resistance of the elastic sliding of the bearing ring 2 is greater than the sliding friction between the sealing ring 104 and the inner circular plate 202. After the circular ring 102 blocks a number of flow holes 2021, the first piston 106 does not completely slide out of the water inlet channel 1601. At this time, the inner side of the annular groove 1021 abuts against the outer side of the side edge 203, so that as the high-pressure water flow continues to push the first piston 106 to slide, the circular ring 102 pushes the bearing ring 2 to elastically slide. When the bearing ring 2 elastically slides, the sponge 13 is compressed and deformed, thereby squeezing out the dirty water absorbed in the sponge 13. In the process of squeezing out the dirty water, a number of flow holes 2021 are formed. The hole 2021 is always covered by the annular groove 1021, so that the squeezed dirty water enters the annular groove 1021 through a plurality of flow holes 2021, and the lower half of the annular groove 1021 is blocked by the arc-shaped baffle plate 105 to form a receiving area, so that the dirty water entering the annular groove 1021 is received by the arc-shaped baffle plate 105 and stored in the receiving area, so that the dirty water in the receiving area will not enter the stagnation area, and then the impurities in the dirty water will not be re-covered on the filter component and will not be re-absorbed by the sponge 13. At this time, the ring 102 plays the role of squeezing out the dirty water in the sponge 13 and isolating and storing the squeezed dirty water.

[0056] It can be seen that the present invention utilizes the power of high-pressure water flow, which can not only play the role of washing the sponge 13, but also can drive the ring 102 to first block a number of flow holes 2021 so that the high-pressure water flow can be stably delivered, and can also drive the ring 102 to squeeze out the internal water of the sponge 13. It can be seen that the use of the high-pressure water flow in the present invention produces multiple unexpected technical effects;

[0057] Moreover, the provision of the circular ring 102 in the present invention not only plays the role of supporting the compression spring 14, but also plays the role of squeezing out the dirty water in the sponge 13, and the role of isolating and storing the squeezed dirty water, so that one structure produces multiple functions, greatly improving the utilization rate of the circular ring 102.

[0058] In this embodiment, the controller body 15 is provided with an annular socket 1502 for sliding insertion of the outer circular plate 201 and an inner concave socket 1503 for sliding insertion of the inner circular plate 202. A compression spring 14 is embedded in the sponge 13. One end of the compression spring 14 abuts against the end face of the controller body 15 and the other end abuts against the inner wall of the bearing ring 2. The elastic sliding of the bearing ring 2 is achieved based on the elastic force of the compression spring 14. At the same time, one end of the sponge 13 abuts against the end face of the controller body 15 and the other end abuts against the inner wall of the bearing ring 2, so that when the bearing ring 2 is pushed to slide by the ring 102, the sponge 13 can be compressed and deformed. When the blocking member 1 is reset, the elastic force of the compression spring 14 drives the bearing ring 2 and the sponge 13 to reset.

[0059] The inner side surface of the side edge 203 extends to the inner side of the inner circular plate 202 and abuts against the side surface of the annular groove 1021, so that the side surface of the annular groove 1021 drives the load ring 2 to slide elastically by pushing the side edge 203. Specifically, when the arc baffle 105 is installed, the arc baffle 105 is not installed at the end of the annular groove 1021, so that the inner wall of the annular groove 1021 forms an abutting surface 1022 located outside the arc baffle 105, and the abutting surface 1022 abuts against the side edge 203, and the elastic sliding of the load ring 2 is achieved by pushing the side edge 203 through the abutting surface 1022.

[0060] In this embodiment, a plurality of fixing rods 1605 are fixedly installed in the water inlet pipe 16, the number of the connecting rods 103 is the same as the number of the fixing rods 1605 and corresponds one to one, and a sliding hole 1031 is provided on the connecting rod 103 for the fixing rod 1605 to slide into, and the sliding connection between the plurality of fixing rods 1605 and the plurality of connecting rods 103 prevents the blocking member 1 from rotating during the sliding process.

[0061] In this embodiment, the water inlet pipe 16 is screwed to the controller body 15 , and when the sponge 13 is replaced or dirty water in the receiving area is cleaned, the water inlet pipe 16 can be disassembled by rotating the water inlet pipe 16 .

[0062] In this embodiment, the filter assembly includes a filter element 3 and a cleaning element 4. The filter element 3 includes a mounting circular frame 301 fixedly connected to the extension tube 12 and a filter screen 302 fixedly installed inside the mounting circular frame 301. The cleaning element 4 is rotatably installed inside the mounting circular frame 301, and the filter screen 302 is cleaned by rotating the cleaning element 4. Specifically, a plurality of mounting holes 3011 are provided on the mounting circular frame 301. The filter assembly can be installed by inserting screws into the mounting holes 3011 and then screwing them with the extension tube 12. Two baffles 3012 arranged at intervals are fixedly installed on the inner wall of the mounting circular frame 301, and the cleaning element 4 is rotatably installed between the two baffles 3012.

[0063] Furthermore, the cleaning member 4 includes a rotating ring 401, a cleaning brush 402, and a plurality of blades 403 arranged equidistantly in the circumferential direction. The rotating ring 401 is rotatably connected to the mounting frame 301. The cleaning brush 402 is fixedly mounted on the rotating ring 401. The bristles of the cleaning brush 402 abut against the filter screen 302. The plurality of blades 403 are fixedly mounted on the rotating ring 401. The blades 403 are arranged in a curved surface so that when the high-pressure water flows, the plurality of blades 403 are driven to rotate, and then the cleaning brush 402 is driven to rotate to automatically clean the filter screen 302. Specifically, the rotating ring 401 is rotatably mounted between the two baffles 3012. The rotating blades 403 can drive the rotating ring 401 to rotate, and the rotating ring 401 drives the cleaning brush 402 to rotate. When the cleaning brush 402 rotates, its bristles are driven to clean the filter screen 302. The force driving the blades 403 to rotate comes from the rotational force of manual rotation after removing the water inlet pipe 16, or the curved surface mechanism design of the blades 403 is used to make the force driving the blades 403 to rotate come from the impact force of the high-pressure water flow, and the high-pressure water flow impacts the multiple blades 403 to rotate and then drives the cleaning brush 402 to rotate to clean the filter 302. It can be seen that the impact force of the high-pressure water flow in the present invention also plays a role in automatically cleaning the filter 302.

[0064] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pressure controller, comprising a controller body (15), a water inlet pipe (16) mounted on the controller body (15), and a check valve assembly, wherein the water inlet pipe (16) comprises a water inlet channel (1601) and an expansion chamber (1604) that are connected to each other, and an extension pipe (12) corresponding to the water inlet pipe (16) and having a flow channel hole (1201) is fixedly mounted in the controller body (15), characterized in that: The check valve assembly comprises a plugging member (1) and a second piston (5) which are elastically slidably arranged and fixedly connected via a connecting rod (11); the plugging member (1) is used to block the water inlet channel (1601); the second piston (5) is dynamically sealed and arranged in an extension tube (12); a filter assembly is installed at one end of the extension tube (12) close to the plugging member (1); a retention zone located in the expansion chamber (1604) is formed between the filter assembly and the plugging member (1); The inner wall of the retention area is provided with a sponge (13) connected to the water inlet channel (1601); The high-pressure water flow entering from the water inlet channel (1601) pushes the blocking member (1) and the second piston (5) to slide elastically synchronously, so that the water flows through the filter assembly and then flows into the controller body (15) from the flow channel hole (1201). When the check valve assembly performs the check operation, the blocking member (1) elastically slides in the opposite direction due to the loss of the impact of the high-pressure water flow, so that the blocking member (1) first blocks the water inlet channel (1601), and then the second piston (5) passes over the flow channel hole (1201) and pushes the water between the second piston (5) and the filter assembly to impact the filter assembly to clean the impurities on the filter assembly to the retention area. The water containing impurities in the retention area is adsorbed by the sponge (13) and then discharged to the water inlet channel (1601); The blocking member (1) comprises a first piston (106) fixedly connected, a limit plate (101), a connecting rod (103), and a circular ring (102); the first piston (106) is dynamically sealed and plugged into the water inlet channel (1601); the limit plate (101) is abutted and matched with the inner end surface of the water inlet channel (1601); the circular ring (102) is fixedly connected to the limit plate (101) via the connecting rod (103); and the outer circumferential surface of the circular ring (102) is embedded with a sealing ring (104) that slides in a sealing manner with the inner wall of the expansion chamber (1604).

2. The pressure controller according to claim 1, characterized in that: The water inlet pipe (16) is provided with an annular hole (1602) and a circular hole (1603) which are connected to each other. The annular hole (1602) is connected to the sponge (13), and the circular hole (1603) is connected to the water inlet channel (1601). After being adsorbed by the sponge (13), the water containing impurities in the retention area is discharged to the water inlet channel (1601) through the annular hole (1602) and the circular hole (1603) in sequence.

3. The pressure controller according to claim 1, characterized in that: A bearing ring (2) is arranged in the expansion cavity (1604), and the bearing ring (2) comprises an outer circular plate (201), an inner circular plate (202) and a side edge (203). The same end faces of the outer circular plate (201) and the inner circular plate (202) are fixedly connected to the side edge (203). The sponge (13) is filled in the space formed between the outer circular plate (201) and the inner circular plate (202). The side edge (203) is provided with a plurality of side holes (2031) connected to the annular hole (1602), and the inner circular plate (202) is provided with a plurality of flow holes (2021).

4. The pressure controller according to claim 3, characterized in that: The inner wall of the inner circular plate (202) is flush with the inner wall of the expansion chamber (1604); an annular groove (1021) is provided on the outer circumferential surface of the circular ring (102); at least two sealing rings (104) are embedded in the circular ring (102); the annular groove (1021) is located between the two sealing rings (104); when the sealing member (1) is pushed by the high-pressure water flow, the plurality of flow holes (2021) are driven to be located between the two sealing rings (104) so ​​that the circular ring (102) blocks the annular hole (1602) and the plurality of flow holes (2021).

5. The pressure controller according to claim 4, characterized in that: The bearing ring (2) is elastically slidably arranged, and an arc-shaped baffle (105) is fixedly mounted on the lower half of the annular groove (1021) so that the lower half of the annular groove (1021) is blocked to form a receiving area. After the circular ring (102) blocks the annular hole (1602) and the plurality of flow holes (2021), the sealing member (1) continues to be pushed by the high-pressure water flow, driving the circular ring (102) to push the bearing ring (2) to slide elastically, so that the sponge (13) is compressed and deformed, and dirty water inside is squeezed out and flows along the bottom surface of the annular groove (1021) to the receiving area for collection.

6. The pressure controller according to claim 5, characterized in that: The controller body (15) is provided with an annular insertion hole (1502) for the outer circular plate (201) to be slidably inserted, and an inner concave insertion hole (1503) for the inner circular plate (202) to be slidably inserted, and a compression spring (14) is embedded in the sponge (13), one end of the compression spring (14) abuts against the end surface of the controller body (15), and the other end abuts against the inner wall of the bearing ring (2), so that the elastic sliding of the bearing ring (2) is achieved based on the elastic force of the compression spring (14).

7. The pressure controller according to claim 5, characterized in that: The inner side surface of the side edge (203) extends to the inner side of the inner circular plate (202) and abuts against the side surface of the annular groove (1021), so that the side surface of the annular groove (1021) drives the bearing ring (2) to slide elastically by pushing the side edge (203).

8. The pressure controller according to claim 1, characterized in that: The filter assembly comprises a filter element (3) and a cleaning element (4); the filter element (3) comprises a mounting circular frame (301) fixedly connected to the extension tube (12) and a filter screen (302) fixedly mounted on the inner side of the mounting circular frame (301); the cleaning element (4) is rotatably mounted on the inner side of the mounting circular frame (301); and the filter screen (302) is cleaned by rotating the cleaning element (4).

9. The pressure controller according to claim 8, characterized in that: The cleaning member (4) comprises a rotating ring (401), a cleaning brush (402), and a plurality of blades (403) arranged equidistantly in the circumferential direction; the rotating ring (401) is rotatably connected to the mounting circular frame (301); the cleaning brush (402) is fixedly mounted on the rotating ring (401); the bristles of the cleaning brush (402) abut against the filter screen (302); the plurality of blades (403) are fixedly mounted on the rotating ring (401); the blades (403) are arranged in a curved surface so that when a high-pressure water flow flows, the plurality of blades (403) are driven to rotate, thereby driving the cleaning brush (402) to rotate, thereby automatically cleaning the filter screen (302).

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