Fixed throttling device and water purifier

Abstract

The utility model discloses a fixed throttling device which comprises a connector, a fixing head, a capillary tube and a sealing conical head, a first through hole is formed in one end of the fixing head, a step is arranged at the other end of the fixing head, external threads are arranged on the outer surface of the step, a second through hole is formed in one end of the connector, and internal threads matched with the fixing head are arranged on the inner side surface of the other end of the connector. The sealing conical head is fixed between the connector and the fixing head, a first conical surface is arranged on the inner surface of the upper end of a step of the fixing head, a second conical surface is arranged on the sealing conical head, the capillary tube is fixed between the connector and the fixing head through conical surface matching formed by the first conical surface and the second conical surface, and a conical sealing sleeve is arranged between the connector and the sealing conical head. According to the device, the corresponding inner diameter and length of the capillary tube can be adjusted according to the actually needed water flow, so that the pressure intensity of water flow and the cross section flow of water are controlled, the optimal throttling effect is achieved, the number of parts is small, the manufacturing cost is low, and the device is suitable for large-scale production.

Description

Technical Field

[0001] This utility model relates to the field of valve switching technology, and in particular to a fixed throttling device and a water purifier. Background Technology

[0002] Throttling valves control fluid flow by changing the throttling cross section or throttling length. Traditional throttling valves mostly have conical streamlined opening and closing parts, which change the cross-sectional area of ​​the channel to regulate flow and pressure. However, assembling the opening and closing parts inside the throttling valve is not only difficult, but the sealing performance after assembly is also hard to guarantee, resulting in low product quality and failure to meet production requirements.

[0003] It is clear that existing technologies still need improvement. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a fixed throttling device and water purifier, which has a simple structure and low cost, so as to overcome the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: This utility model provides a fixed throttling device and a water purifier. The throttling device includes a fixed head, a connector, a capillary tube, and a sealing cone. The connector is threadedly connected to the fixed head. The capillary tube passes through the connector and the fixed head. A conical sealing sleeve and a sealing cone are fitted onto the capillary tube. The connector and the fixed head clamp the conical sealing sleeve and the sealing cone to secure the capillary tube inside the connector and the fixed head. The inner diameter and length of the capillary tube are adjusted according to the required water flow rate, thereby controlling the water pressure and cross-sectional flow rate of the device.

[0006] The fixing head has a first through hole at one end and a step at the other end. The outer surface of the step has an external thread and the inner surface of the step has a first conical surface. The connector has a second through hole at one end and an internal thread that mates with the connector on the inner surface at the other end. The sealing cone is fixed between the connector and the fixing head. The sealing cone has a second conical surface. The conical surfaces formed by the first and second conical surfaces mate to fix the capillary between the connector and the fixing head. The conical sealing sleeve is provided between the connector and the sealing cone.

[0007] Furthermore, the fixing head, capillary tube, and sealing cone are all made of stainless steel.

[0008] Furthermore, the fixing head and the connector are respectively a hexagonal external thread connector and a hexagonal nut.

[0009] A water purifier includes a water purifier body, the water purifier body is provided with a reverse osmosis component, the reverse osmosis component includes an RO filter element and a housing, the housing includes a housing body, an inlet pipe, an outlet pipe and a wastewater pipe, the wastewater pipe is connected to the aforementioned fixed throttling device.

[0010] The above technical solution has the following beneficial effects:

[0011] 1) This throttling device forms a conical fit between the first conical surface of the connector and the second conical surface of the sealing cone, and the conical seat of the sealing cone and the conical surface of the conical sealing sleeve form a conical fit, which ensures the sealing performance of the throttling device and guarantees the quality of the product.

[0012] 2) This throttling device has few parts and low manufacturing cost.

[0013] 3) In an RO water purifier, impurities obtained through filtration are retained to form wastewater. When the wastewater flows into the capillary tube, due to the small diameter of the capillary tube, the wastewater comes into closer contact with the capillary tube, thereby reducing the sound of the wastewater gushing in the wastewater flow limiting device and achieving the effect of reducing noise.

[0014] 4) This device can adjust the inner diameter and length of the capillary tube according to the actual required water flow rate, thereby controlling the water pressure and cross-sectional flow rate of the device to achieve the best throttling effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a fixed throttling device according to the present invention;

[0016] Figure 2 An exploded view of a fixed throttling device;

[0017] Figure 3 A cross-sectional view of a fixed throttling device;

[0018] Figure 4 This is a schematic diagram of the structure after the fixed head and connector are threaded together.

[0019] Figure 5 This is a cross-sectional view of a stationary wastewater flow restriction device;

[0020] Figure 6 This is a schematic diagram of the water circuit of a water purifier.

[0021] The meanings of the reference numerals in the attached figures are as follows:

[0022] 1. Inlet valve, 2. Pre-filter PCB element, 3. Booster pump, 4. RO membrane filter unit, 5. First check valve, 6. PE water bag, 61. PE water bag inlet and outlet pipes, 7. Water supply pump, 8. Second flow meter, 9. First flow meter, 10. Second check valve, 11. Micro pressure sensor, 12. Fixed throttling device, 121. Housing, 122. Inlet pipe, 123. Outlet pipe, 124. Wastewater pipe, 125. Waterstop, 126. RO filter membrane, 127. Water collection pipe, 128. Water collection hole, 131. Connector, 132. Fixing head, 133. Capillary tube, 14. Sealing cone, 15. Conical sealing sleeve, 16. First conical surface, 17. Second conical surface, 18. First through hole, 19. Second through hole, 20. Conical seat, 21. Conical surface. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can be a mechanical connection or an electrical connection; they can be a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] See Figures 1-4 As shown, this utility model discloses a fixed throttling device.

[0026] Please see Figure 1-4 A fixed throttling device includes a fixed head 132, a connector 131, a capillary tube 133, and a sealing cone 14. One end of the fixed head 132 has a first through hole 18, and the other end has a step. The outer surface of the step has an external thread, and the inner surface of the step has a first conical surface 16. One end of the connector 131 has a second through hole 19, and the other end has an internal thread on its inner surface that mates with the fixed head 132. The sealing cone 14 is fixed between the connector 131 and the fixed head 132. The sealing cone 14 has a second conical surface 17. The conical surfaces formed by the first conical surface 16 and the second conical surface 17 fix the capillary tube 133 between the connector 131 and the fixed head 132. A conical sealing sleeve 15 is provided between the connector 131 and the sealing cone 14.

[0027] Specifically, when the first conical surface 16 at one end of the fixing head 132 and the second conical surface 17 on the sealing cone 14 are pressed together by the connector 131, an annular contact band is formed between the first conical surface 16 and the second conical surface 17. The axial clamping force applied by the connector to the sealing cone forces the second conical surface of the sealing cone to undergo a slight elastic deformation, making the second conical surface fit more closely to the first conical surface on the inner surface of the fixing head, thereby making the wool tube 133 more firmly clamped. At the same time, the conical surface 21 of the conical sealing sleeve 15 and the conical seat 20 of the sealing cone 14 undergo compression deformation under the axial clamping force applied by the connector 131, so that the sealing cone 14 and the conical sealing sleeve 15 form a conical surface fit, which not only improves the sealing effect of the device, but also makes the structure of the entire device more compact, ensuring that the sealing cone can still maintain a reliable seal after long-term use.

[0028] Preferably, the fixed head 132, the sealing cone 14 and the capillary tube 133 are made of stainless steel to ensure that the capillary tube can withstand the water pressure when a large flow of water passes through.

[0029] Preferably, the capillary tube can be modified to have the corresponding inner diameter and length according to the actual required water flow rate, thereby controlling the water pressure and cross-sectional flow rate of the device.

[0030] The fixing head and the connector are a hexagonal external thread connector and a hexagonal nut, respectively.

[0031] like Figure 5 As shown, the fixed throttling device can be applied to water purification equipment. The water purification equipment consists of a water purifier body and the aforementioned fixed throttling device. The water purifier body is equipped with a reverse osmosis component, which includes an RO filter element and a housing. The housing includes a housing body 121, an inlet pipe 122, an outlet pipe 123, and a wastewater pipe 124. The inlet pipe 122 is located at the top of the housing body 121, and its inlet is connected to the interior of the housing body 121. The outlet pipe 123 and the wastewater pipe 124 are both located at the bottom of the housing body 121, and both are connected to the interior of the housing body 121. Untreated water enters the interior of the housing body 121 through the inlet pipe 122. After being filtered by the RO filter element, the filtered clean water flows into the outlet pipe 123, and the wastewater flows into the wastewater pipe 124, and then flows into the fixed throttling device to regulate the wastewater flow rate.

[0032] See the structure of the fixed throttling device. Figures 1 to 4 As shown.

[0033] See the structure of the water purifier body. Figure 5The RO filter element includes an RO filter membrane 126, a water stop strip 125, and a water collection pipe 127. The water collection pipe 127 is provided with a water collection hole 128. Specifically, untreated water flows into the housing body 121 from the inlet of the inlet pipe 122. The untreated water is filtered by the RO filter membrane 126. The filtered clean water enters the water collection pipe 127 from the water collection hole 128 and finally flows out from the outlet pipe 123. The impurities obtained by filtration are intercepted to form wastewater, which flows along the RO filter membrane 126 into the fixed throttling device from the wastewater pipe 124.

[0034] like Figure 6 As shown, the fixed flow-limiting device of this application can be applied to a water purification system. This fixed wastewater flow-limiting device can be used in the water purification system. The system consists of an inlet valve 1, a pre-filter PCB cartridge 2, a booster pump 3, an RO membrane filter unit 4, a first check valve 5, a water supply pump 7, and a second flow meter 8 connected in sequence. A zero-stagnant water path is connected between the inlet side (or front side) of the RO membrane filter unit 4 and the rear side of the water supply pump 7. The zero-stagnant water path is composed of a first flow meter 9 and a second check valve 10. The PE water bag 6 is connected to the outlet of the first check valve 5 and the water supply pump 7 through the PE water bag inlet and outlet pipe 61. A micro-pressure sensor 11 is installed on the PE water bag inlet and outlet pipe 61.

[0035] Specifically, water flows into the pre-filter PCB element 2 through the inlet valve 1. After preliminary filtration by the pre-filter PCB element 2, it enters the booster pump 3. The booster pump 3 provides sufficient water pressure to ensure the water purification equipment can operate stably and efficiently. The pressurized water then enters the RO membrane filter unit 4. After filtration and diversion by the RO membrane filter unit 4, the filtered clean water flows to the first one-way valve 5, and then enters the water supply pump 7. Finally, it flows out of the water supply pump 7 as clean water available for users. At the same time, a second flow meter 8 can be installed in the water supply pump 7 to monitor the water output of the water supply pump 7. The impurities obtained from filtration are intercepted and form wastewater, which flows along the RO membrane filter unit 4 from the wastewater pipe into the fixed throttling device 12.

[0036] To address the issue of excessively high TDS (Total Dissolved Solids) values ​​in the first cup of water after the water purifier is shut down, the zero-stagnant-water purifier continues to produce water that flows into the PE water bag 6 when the purifier is in standby mode. The pressure in the PE water bag 6 increases, and when the pressure in the PE water bag 6 exceeds the threshold, the inlet valve 1 closes, the second one-way valve 10 opens, and the booster pump 3 and the water supply pump 7 close. Under pressure, the pure water in the PE water bag 6 passes through the first flow meter 9 and flows into the RO membrane filter unit 4 through the zero-stagnant-water path. The pure water mixes with the raw water in the RO membrane filter unit 4 and is discharged from the fixed throttling device, thus achieving throttling and pressure reduction of the wastewater.

[0037] Although embodiments of the present invention have been shown and described, those skilled in the art should understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents. Improvements made without inventive effort should be included within the protection scope of the present invention.

Claims

1. A fixed throttling device, characterized in that, The device includes a connector (131), a fixed head (132), a capillary tube (133), and a sealing cone (14). The connector and the fixed head are threaded together. The capillary tube passes through the connector and the fixed head. A conical sealing sleeve (15) and a sealing cone (14) are fitted onto the capillary tube. The connector and the fixed head clamp the conical sealing sleeve and the sealing cone to secure the capillary tube inside the connector and the fixed head. The inner diameter and length of the capillary tube are adjusted according to the required water flow rate, thereby controlling the water pressure and cross-sectional flow rate of the device.

2. A fixed throttling device according to claim 1, characterized in that, The fixing head (132) has a first through hole (18) at one end and a step at the other end. The outer surface of the step has an external thread and the inner surface of the step has a first conical surface (16). The connector (131) has a second through hole (19) at one end and an inner thread that mates with the fixing head (132) on the inner surface of the other end. The sealing cone (14) is fixed between the connector (131) and the fixing head (132). The sealing cone (14) has a second conical surface (17). The conical surfaces formed by the first conical surface (16) and the second conical surface (17) fix the capillary tube (133) between the connector (131) and the fixing head (132). The conical sealing sleeve (15) is provided between the connector (131) and the sealing cone (14).

3. A fixed throttling device according to claim 2, characterized in that, The fixing head (132), capillary tube (133) and sealing cone (14) are all made of stainless steel.

4. A fixed throttling device according to claim 2, characterized in that, The fixing head (132) and the connector (131) are respectively an external thread connector and a hexagonal nut.

5. A water purifier, comprising a water purifier body, wherein the water purifier body is provided with a reverse osmosis component, the reverse osmosis component comprising an RO filter element and a housing, the housing comprising a housing body, an inlet pipe, an outlet pipe, and a wastewater pipe, characterized in that, The wastewater pipe is connected to the fixed throttling device as described in any one of claims 1 to 4.

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