An exhaust pressure constant water supply device

Abstract

This utility model provides an exhaust pressure regulating water supply device, including a base plate, a water pump fixed to one side of the top of the base plate, an inlet pipe connected to the input end of the water pump, and a first connecting pipe connected to the output end of the water pump, an atmospheric pressure diaphragm tank fixed to the other side of the top of the base plate, and a filter structure located at the bottom of the atmospheric pressure diaphragm tank. This utility model uses a cylindrical filter screen to intercept impurities such as mud, rust, etc., in the water. The filtered clean water is transported to the atmospheric pressure diaphragm tank via a water supply pipe, while impurities are centrally stored in a sludge storage tank via a drain pipe. This achieves the foreign matter filtration function of the device, allowing for centralized storage of filtered foreign matter for easy discharge. This reduces wear on internal core components caused by foreign matter entering the system, lowers the probability of equipment failure, and avoids frequent disassembly of pipelines to locate and clean impurities, thus shortening maintenance time and reducing maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of heating, ventilation and air conditioning technology, and in particular to an exhaust pressure constant water supply device. Background Technology

[0002] Because closed-loop water circulation systems such as heating and air conditioning are prone to accumulating air during operation, affecting heat exchange efficiency, and the system pressure may fluctuate due to changes in water temperature or water leakage, potentially damaging pipes and equipment, an air venting and pressure stabilizing water replenishment device is installed to promptly expel air from the system, stabilize the system operating pressure, and automatically replenish the system's missing water volume, ensuring the continuous, efficient, and safe operation of the water circulation system.

[0003] A search revealed Chinese patent publication number CN217636104U, which discloses an atmospheric pressure constant pressure water replenishment and exhaust device. The device includes a casing, a base plate, and a connecting tank fixedly connected to the top of the base plate via a flange. An atmospheric pressure diaphragm tank is located on the outer side of the base plate. The pressure replenishment and air replenishment mechanism includes a booster pump and a water replenishment pump. An air guide pipe is fixedly connected to the outer side of the booster pump, and a water guide pipe is fixedly connected to the outer side of the water replenishment pump. The protection mechanism includes a protective box with a countersunk groove on its outer side. A cover plate is rotatably connected inside the countersunk groove. A controller is fixedly connected to the inner bottom wall of the protective box. The atmospheric pressure diaphragm tank and the connecting tank are connected via a third connecting pipe. The water level inside the connecting tank can be directly observed through an observation window, allowing for detection of any malfunctions in the water level sensor. The cover plate can be removed from the countersunk groove using a handle, facilitating operation of the controller. The protective box and cover plate provide protection for the controller.

[0004] The aforementioned patent has the following shortcomings: After prolonged use, rust and particulate impurities are easily generated inside the pipes. These impurities are easily transported into the atmospheric pressure diaphragm tank by the water pump, causing the diaphragm inside the tank to be worn by hard impurities, reducing the sealing performance, and thus causing pressure setting failure. At the same time, impurities will also accumulate in the connecting tank and system pipes, causing pipe blockage, requiring frequent shutdowns for cleaning, increasing maintenance costs, and even causing local pressure abnormalities due to poor water flow, threatening the safe operation of the system.

[0005] Therefore, an exhaust pressure constant water replenishment device is proposed. Utility Model Content

[0006] In view of this, the present invention aims to provide an exhaust pressure constant water replenishment device to solve or alleviate the technical problems existing in the prior art, or at least provide a beneficial option.

[0007] The technical solution of this utility model embodiment is implemented as follows: an exhaust pressure constant water replenishment device, including a base plate, and further including: A water pump is fixed to one side of the top of the base plate. The input end of the water pump is connected to an inlet pipe, and the output end of the water pump is connected to a first connecting pipe. An electric gate valve is fixed at the top of a first connecting pipe. The top of the electric gate valve is connected to a main pipe. A pressure gauge is installed inside the top of the main pipe. The bottom of the main pipe is connected to a second connecting pipe. An atmospheric pressure diaphragm tank is fixed to the other side of the top of the base plate. A vent valve is fixed to the top of the atmospheric pressure diaphragm tank, and an inflation valve is fixed to the top of one side of the atmospheric pressure diaphragm tank. A filtration structure is installed at the bottom of an atmospheric pressure diaphragm tank. The filtration structure includes a water supply pipe fixed to the bottom of the atmospheric pressure diaphragm tank, a cylindrical body fixed to the bottom of the water supply pipe, an inlet connected to a second connecting pipe fixed to one side of the cylindrical body, a support frame fixed inside the cylindrical body, a cylindrical filter screen fixed to one side of the support frame, a fixing seat connected to the cylindrical body fixed to the side of the cylindrical filter screen away from the support frame, and a sludge storage component provided at the bottom of the cylindrical body. The cleaning structure is located inside the cylindrical filter screen and is used to clean the inside of the cylindrical filter screen; An anti-backflow structure is installed on one side inside the cylinder to prevent foreign objects from flowing back into the second connecting pipe.

[0008] In some embodiments: a drain valve is installed on the side of the cylinder away from the water inlet, and an electrical control box is installed on the top of the base plate.

[0009] In some embodiments: the sludge storage assembly includes a sludge pipe fixed to the bottom end of a cylindrical filter screen, a sludge storage tank fixed to the bottom end of the sludge pipe, and a sludge discharge valve installed at the bottom end of the sludge storage tank.

[0010] In some embodiments: the drain pipe extends to the outside of the cylinder and is connected to the sludge storage tank, and the cylindrical filter screen is fixed inside the cylinder by a support frame.

[0011] In some embodiments: the cleaning structure includes a positioning frame fixed to the inner wall of the fixing seat, a drive shaft is rotatably connected inside the positioning frame, a water wheel is fixed to one side of the drive shaft, and a scraper that is slidably connected to the cylindrical filter screen is fixed to the outer side of the drive shaft.

[0012] In some embodiments: the scraper has a double helix structure, and the end of the drive shaft away from the water wheel forms a rotating structure with the support frame.

[0013] In some embodiments: the anti-reverse structure includes a guide frame fixed inside one side of the cylinder, a movable rod slidably connected inside the guide frame, a stopper fixed to one side of the movable rod, a return spring connected to the guide frame fixed to one side of the stopper, and a fixing sleeve fixedly connected to the cylinder to one side of the stopper.

[0014] In some embodiments: the stopper forms a telescopic structure with the guide frame via a return spring, and the diameter of the stopper is larger than the inner diameter of the fixed sleeve.

[0015] The present invention has the following advantages due to the adoption of the above technical solution: 1. An exhaust pressure constant water supply device, which intercepts impurities such as mud, sand and rust in water through the filtration effect of a cylindrical filter screen. The filtered clean water is transported to an atmospheric pressure diaphragm tank through a water supply pipe, while the impurities are centrally stored in a sludge storage tank through a drain pipe. This realizes the foreign matter filtration function of the device, and can centrally store the filtered foreign matter for easy discharge. It can reduce the wear of internal core components after foreign matter enters the system, reduce the probability of equipment failure, and avoid frequent disassembly of pipelines to find and clean impurities, shorten maintenance time and reduce maintenance costs.

[0016] 2. An exhaust pressure constant water replenishment device, which uses water flow to impact a water wheel to drive a drive shaft to rotate, followed by a scraper scraping away impurities on the inside of a cylindrical filter screen and pushing the impurities toward the drain pipe, thereby realizing the self-cleaning function of the device. This can avoid water flow obstruction caused by impurities clogging the cylindrical filter screen, ensure that the device's water replenishment and exhaust efficiency does not decrease, and eliminate the need for frequent shutdowns to manually disassemble and clean the filter screen, greatly shortening maintenance time and reducing labor costs.

[0017] 3. An exhaust pressure constant water replenishment device, which uses a return spring to push the stop plug to fit with the fixed sleeve, thereby blocking the reverse flow of water, thus realizing the anti-backflow function of the device, preventing water backflow and causing impurities to flow back to the water replenishment source, and ensuring that subsequent water replenishment always remains clean.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 In this utility model Figure 1 Another structural diagram from a different angle; Figure 3 A three-dimensional cross-sectional structural diagram of the filter structure provided by this utility model; Figure 4 A three-dimensional structural diagram of the cleaning structure provided by this utility model; Figure 5 Provided by this utility model Figure 3 A magnified schematic diagram of a partial cross-section at point A in the middle.

[0021] Figure label: 1-Base plate, 2-First connecting pipe, 3-Water pump, 4-Inlet pipe, 5-Electric control box, 6-Electric gate valve, 7-Filter structure, 701-Cylinder body, 702-Cylindrical filter screen, 703-Water supply pipe, 704-Sewage discharge pipe, 705-Fixed seat, 706-Support frame, 707-Inlet, 708-Sewage storage tank, 709-Sewage discharge valve, 8-Cleaning structure, 801-Scraper, 802-Positioning frame, 803-Water wheel, 804-Drive shaft, 9-Anti-reverse structure, 901-Guide frame, 902-Moving rod, 903-Reset spring, 904-Block, 905-Fixed sleeve, 10-Main pipe, 11-Pressure gauge, 12-Atmospheric pressure diaphragm tank, 13-Air release valve, 14-Air filling valve, 15-Drain valve, 16-Second connecting pipe. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] Example 1: like Figure 1-5 As shown, an exhaust pressure constant water supply device includes a base plate 1, and further includes: Water pump 3 is fixed on one side of the top of base plate 1. The input end of water pump 3 is connected to water inlet pipe 4, and the output end of water pump 3 is connected to first connecting pipe 2. An electric gate valve 6 is fixed at the top of the first connecting pipe 2. The top of the electric gate valve 6 is connected to the main pipe 10. A pressure gauge 11 is installed inside the top of the main pipe 10. The bottom of the main pipe 10 is connected to the second connecting pipe 16. An atmospheric pressure diaphragm tank 12 is fixed on the other side of the top of the base plate 1. A vent valve 13 is fixed on the top of the atmospheric pressure diaphragm tank 12, and an inflation valve 14 is fixed on the top of one side of the atmospheric pressure diaphragm tank 12. The filter structure 7 is set at the bottom of the atmospheric pressure diaphragm tank 12. The filter structure 7 includes a water supply pipe 703 fixed at the bottom of the atmospheric pressure diaphragm tank 12. A cylinder 701 is fixed at the bottom of the water supply pipe 703. An inlet 707 connected to the second connecting pipe 16 is fixed on one side of the cylinder 701. A support frame 706 is fixed inside the cylinder 701. A cylindrical filter screen 702 is fixed on one side of the support frame 706. A fixing seat 705 connected to the cylinder 701 is fixed on the side of the cylindrical filter screen 702 away from the support frame 706. A sludge storage component is set at the bottom of the cylinder 701. The cleaning structure 8 is located inside the cylindrical filter screen 702 and is used to clean the inside of the cylindrical filter screen 702. The anti-backflow structure 9 is installed on one side inside the cylinder 701 to prevent foreign objects from flowing back into the interior of the second connecting pipe 16; A drain valve 15 is installed on the side of the cylinder 701 away from the water inlet 707, and an electrical control box 5 is installed on the top of the bottom plate 1.

[0026] In this embodiment, when the device is started, the water pump 3 is controlled by the electrical control box 5 to operate, so that the water pump 3 draws in external replenishment water through the water inlet pipe 4. After being pressurized by the water pump 3, the replenishment water is delivered to the electric gate valve 6 through the first connecting pipe 2. At the same time, the electric gate valve 6 opens to introduce the replenishment water into the main pipeline 10. Meanwhile, the pressure gauge 11 monitors the pressure data in the main pipeline 10 in real time and feeds it back to the electrical control box 5. Then, the replenishment water in the main pipeline 10 flows to the filter structure 7 through the second connecting pipe 16. After filtration, the replenishment water enters the atmospheric pressure diaphragm tank 12. Gas is added to the atmospheric pressure diaphragm tank 12 through the air filling valve 14 to maintain the pressure inside the tank. When the pressure inside the atmospheric pressure diaphragm tank 12 is too high, the vent valve 13 automatically opens to release the excess gas. When the system needs to drain water, the drain valve 15 can be opened for operation, thereby realizing the basic functions of system water replenishment, pressure stabilization and air venting.

[0027] like Figures 3 to 4 As shown, the sludge storage assembly includes a sludge pipe 704 fixed to the bottom of the cylindrical filter screen 702, a sludge storage tank 708 fixed to the bottom of the sludge pipe 704, and a sludge discharge valve 709 installed at the bottom of the sludge storage tank 708.

[0028] In this embodiment, when the makeup water enters the cylinder 701 through the inlet 707 via the second connecting pipe 16, the water flows towards the cylindrical filter 702. The cylindrical filter 702 filters out impurities such as mud and rust in the water. The filtered clean water is then transported to the atmospheric pressure diaphragm tank 12 via the water supply pipe 703. Meanwhile, the impurities intercepted by the cylindrical filter 702 gradually move downwards under the action of gravity. Then, the impurities enter the sludge storage tank 708 through the drain pipe 704 for centralized storage. When the impurities in the sludge storage tank 708 accumulate to a certain amount, the drain valve 709 can be opened to discharge the impurities. This achieves the filtration of the makeup water and the centralized collection of impurities, which to a certain extent prevents impurities from entering the atmospheric pressure diaphragm tank 12 and subsequent pipelines, and reduces wear on the internal components of the system.

[0029] like Figures 3 to 4 As shown, the drain pipe 704 extends to the outside of the cylinder 701 and is connected to the sludge storage tank 708, and the cylindrical filter screen 702 is fixed inside the cylinder 701 by the support frame 706.

[0030] In this embodiment, the impurities intercepted by the cylindrical filter screen 702 can be stored in the sludge storage tank 708 through the drain pipe 704. The cylindrical filter screen 702 is fixed by the support frame 706, which can keep the filter position stable and avoid the cylindrical filter screen 702 from shifting due to water flow impact to a certain extent, thus ensuring the filtration effect and impurity collection efficiency.

[0031] Example 2: An exhaust pressure constant water replenishment device, this embodiment is based on embodiment 1 with the following improvements, such as... Figures 3 to 4 As shown, the cleaning structure 8 includes a positioning frame 802 fixed on the inner wall of the fixing base 705. A drive shaft 804 is rotatably connected inside the positioning frame 802. A water wheel 803 is fixed on one side of the drive shaft 804. A scraper 801 that is slidably connected to the cylindrical filter screen 702 is fixed on the outer side of the drive shaft 804.

[0032] In this embodiment, when the makeup water enters the cylinder 701 and flows towards the cylindrical filter screen 702, the water flow impacts the water wheel 803, causing the water wheel 803 to drive the drive shaft 804 to rotate. As the drive shaft 804 rotates, it drives the outer double spiral scraper 801 to slide inside the cylindrical filter screen 702. The scraper 801 scrapes away the impurities attached to the inside of the cylindrical filter screen 702. At the same time, the scraper 801 pushes the scraped impurities to move towards the drain pipe 704 and into the sludge storage tank 708, thereby realizing automatic cleaning of the inside of the cylindrical filter screen 702. This prevents the cylindrical filter screen 702 from becoming clogged due to the attachment of impurities to a certain extent, and maintains the flow efficiency of the makeup water.

[0033] like Figures 3 to 4 As shown, the scraper 801 has a double helix structure, and the end of the drive shaft 804 away from the water wheel 803 forms a rotating structure with the support frame 706.

[0034] In this embodiment, the scraper 801 with a double helix structure generates a pushing force during rotation, which accelerates the scraped impurities to move towards the drain pipe 704 and into the storage tank 708. The other end of the drive shaft 804 is supported by the support frame 706 to ensure that the drive shaft 804 drives the scraper 801 stably without shaking.

[0035] like Figure 3 and Figure 5 As shown, the anti-reverse structure 9 includes a guide frame 901 fixed inside one side of the cylinder 701. A moving rod 902 is slidably connected inside the guide frame 901. A stopper 904 is fixed on one side of the moving rod 902. A return spring 903 connected to the guide frame 901 is fixed on one side of the stopper 904. A fixing sleeve 905 fixedly connected to the cylinder 701 is provided on one side of the stopper 904.

[0036] In this embodiment, when the water pressure inside the cylinder 701 is in a normal water supply state, the pressure generated by the water flow will push the baffle 904 to move towards the guide frame 901, causing the baffle 904 to compress the return spring 903 and separate from the fixed sleeve 905. At this time, the replenished water can flow smoothly through the fixed sleeve 905 to the cylindrical filter screen 702. When the water pressure inside the cylinder 701 fluctuates in the opposite direction, the return spring 903 will release elastic potential energy to push the baffle 904 to move towards the fixed sleeve 905. Since the diameter of the baffle 904 is larger than the inner diameter of the fixed sleeve 905, the baffle 904 will fit tightly against the fixed sleeve 905 to block the reverse flow of water, thereby achieving the function of preventing the reverse flow of water. To a certain extent, it avoids the backflow of filtered impurities back into the second connecting pipe 16, prevents the replenished water source from being contaminated and the system operation from becoming disordered.

[0037] like Figure 3 and Figure 5As shown, the stopper 904 forms a telescopic structure with the guide frame 901 through the return spring 903, and the diameter of the stopper 904 is larger than the inner diameter of the fixed sleeve 905.

[0038] In this embodiment, during reverse flow, the baffle 904 can quickly block the fixed sleeve 905 by rebounding with the return spring 903. The diameter of the baffle 904 is larger than the inner diameter of the fixed sleeve 905, so it can fit tightly against the fixed sleeve 905 and prevent water and impurities from flowing back in through the gap to a certain extent.

[0039] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An exhaust pressure constant water supply device, comprising a base plate (1), characterized in that, Also includes: A water pump (3) is fixed on one side of the top of the base plate (1). The input end of the water pump (3) is connected to a water inlet pipe (4), and the output end of the water pump (3) is connected to a first connecting pipe (2). An electric gate valve (6) is fixed at the top of the first connecting pipe (2). The top of the electric gate valve (6) is connected to the main pipe (10). A pressure gauge (11) is installed inside the top of the main pipe (10). The bottom of the main pipe (10) is connected to the second connecting pipe (16). An atmospheric pressure diaphragm tank (12) is fixed on the other side of the top of the base plate (1). A vent valve (13) is fixed on the top of the atmospheric pressure diaphragm tank (12), and an inflation valve (14) is fixed on the top of one side of the atmospheric pressure diaphragm tank (12). A filter structure (7) is provided at the bottom of an atmospheric pressure diaphragm tank (12). The filter structure (7) includes a water supply pipe (703) fixed at the bottom of the atmospheric pressure diaphragm tank (12). A cylinder (701) is fixed at the bottom of the water supply pipe (703). An inlet (707) connected to a second connecting pipe (16) is fixed on one side of the cylinder (701). A support frame (706) is fixed inside the cylinder (701). A cylindrical filter screen (702) is fixed on one side of the support frame (706). A fixing seat (705) connected to the cylinder (701) is fixed on the side of the cylindrical filter screen (702) away from the support frame (706). A sludge storage component is provided at the bottom of the cylinder (701). The cleaning structure (8) is located inside the cylindrical filter screen (702) and is used to clean the inside of the cylindrical filter screen (702); An anti-backflow structure (9) is installed on one side inside the cylinder (701) to prevent foreign objects from flowing back into the interior of the second connecting pipe (16).

2. The exhaust pressure constant water replenishment device according to claim 1, characterized in that: A drain valve (15) is installed on the side of the cylinder (701) away from the water inlet (707), and an electrical control box (5) is installed on the top of the bottom plate (1).

3. The exhaust pressure constant water replenishment device according to claim 1, characterized in that: The sludge storage assembly includes a sludge pipe (704) fixed to the bottom of the cylindrical filter screen (702), a sludge storage tank (708) fixed to the bottom of the sludge pipe (704), and a sludge discharge valve (709) installed at the bottom of the sludge storage tank (708).

4. The exhaust pressure constant water replenishment device according to claim 3, characterized in that: The drain pipe (704) extends to the outside of the cylinder (701) and is connected to the sludge storage tank (708). The cylindrical filter screen (702) is fixed inside the cylinder (701) by a support frame (706).

5. The exhaust pressure constant water replenishment device according to claim 1, characterized in that: The cleaning structure (8) includes a positioning frame (802) fixed on the inner wall of the fixed base (705). The positioning frame (802) is rotatably connected to a drive shaft (804). A water wheel (803) is fixed on one side of the drive shaft (804). A scraper (801) that is slidably connected to the cylindrical filter screen (702) is fixed on the outside of the drive shaft (804).

6. The exhaust pressure constant water replenishment device according to claim 5, characterized in that: The scraper (801) has a double helix structure, and the end of the drive shaft (804) away from the water wheel (803) forms a rotating structure with the support frame (706).

7. The exhaust pressure constant water supply device according to claim 1, characterized in that: The anti-reverse structure (9) includes a guide frame (901) fixed inside one side of the cylinder (701). A moving rod (902) is slidably connected inside the guide frame (901). A stopper (904) is fixed on one side of the moving rod (902). A return spring (903) connected to the guide frame (901) is fixed on one side of the stopper (904). A fixing sleeve (905) fixedly connected to the cylinder (701) is provided on one side of the stopper (904).

8. The exhaust pressure constant water replenishment device according to claim 7, characterized in that: The stopper (904) forms a telescopic structure with the guide frame (901) through the return spring (903), and the diameter of the stopper (904) is larger than the inner diameter of the fixed sleeve (905).

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