High-efficiency ejector

Abstract

The utility model discloses a high-efficiency ejector which comprises a spray head structure and a gas-liquid mixing structure, and the gas-liquid mixing structure is detachably arranged on the spray head structure. The nozzle structure is used for increasing the flow speed of liquid when the liquid is sprayed out; the gas-liquid mixing structure is used for better mixing gas and liquid; wherein the gas-liquid mixing structure comprises an extension pipe, a push block and an elastic piece, a first sliding area and a second sliding area are arranged in the extension pipe, a limiting ring is arranged on the push block, the push block is used for sliding in the first sliding area, the limiting ring is used for sliding in the second sliding area, and the elastic piece is installed in the first sliding area; one end of the elastic piece is connected with the extension pipe, and the other end is contacted with the push block; a water inlet hole is formed in the push block; the utility model aims to solve the problem that the air inflow of an efficient ejector in the prior art cannot be automatically adjusted according to the specific water inflow.

Description

Technical Field

[0001] The utility model relates to the technical field of injectors, in particular to a high-efficiency injector. Background Art

[0002] Ejector, also known as ejector, jet vacuum pump, jet pump, etc., is a vacuum obtaining device that uses fluid to transfer energy and mass. It is widely used in various industries, especially in vacuum suction process.

[0003] In the petrochemical, metallurgical and other industries, many companies have their own thermal power plants, which are supplied with steam by the extraction and back pressure of the steam turbine. However, since the extraction pressure (back pressure) of the steam turbine is fixed, sometimes the steam supply of the steam turbine cannot meet the production needs. At this time, the ejector can use the new steam from the boiler to inject the extraction or exhaust steam of the steam turbine and boost its pressure to meet the user's requirements. This method not only solves the problem of insufficient steam pressure for production, but also improves energy utilization efficiency and reduces the waste of high-quality steam. For example, in the actual application of some petrochemical enterprises, the low-pressure steam is boosted by the ejector and used for production, which significantly improves energy utilization and reduces production costs.

[0004] Ejectors can also be used to recover and utilize waste heat. In the process of industrial production, a large amount of waste heat is often generated. If this waste heat is directly discharged into the environment, it will not only cause energy waste, but also cause thermal pollution to the environment. The ejector can recover this waste heat and convert it into useful steam or hot water, thereby realizing energy reuse. For example, in a steam jet refrigeration system, waste heat can be used to heat steam as working steam, and steam in the evaporator can be extracted to reduce the pressure of the liquid refrigerant in the evaporator, so that the refrigerant evaporates in the evaporator to achieve the purpose of refrigeration. This method not only reduces energy consumption, but also reduces the operating cost of the refrigeration system.

[0005] The utility model patent with application number: CN202322496326.5 and publication number: CN221062749U (hereinafter referred to as "prior art 1") discloses a high-efficiency ejector, comprising a liquid inlet section, a mixing section and a diffuser section connected in sequence from top to bottom, a conical nozzle with a larger upper portion and a smaller lower portion is provided at the lower end of the liquid inlet section, the conical nozzle extends into the mixing section, the circumferential wall of the mixing section is connected to the air inlet section, and the diameter of the mixing section is larger than that of the diffuser section.

[0006] The specification of prior art 1 discloses a high-efficiency ejector. When in use, a large-diameter and long-length mixing section is set to reduce the fluid flow rate, so that the liquid and gas have more contact time and opportunities to mix, which can increase the mass transfer effect between the liquid and the gas and improve the uniformity and efficiency of the mixing. However, in actual applications, the amount of air intake cannot be automatically adjusted according to the specific amount of liquid intake. Summary of the invention

[0007] The utility model provides a high-efficiency ejector, aiming to solve the problem that the high-efficiency ejector in the prior art cannot automatically adjust the air intake according to the specific amount of water intake.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0009] A high-efficiency ejector comprises a nozzle structure and a gas-liquid mixing structure, wherein the gas-liquid mixing structure is detachably arranged on the nozzle structure;

[0010] The nozzle structure is used to increase the flow rate of the liquid when the liquid is sprayed out; the gas-liquid mixing structure is used to achieve better mixing between gas and liquid;

[0011] Among them, the gas-liquid mixing structure includes an extension tube, a push block and an elastic member. A first sliding area and a second sliding area are provided in the extension tube. A limiting ring is provided on the push block. The push block is used to slide inside the first sliding area, and the limiting ring is used to slide inside the second sliding area. The elastic member is installed in the first sliding area, one end of the elastic member is connected to the extension tube, and the other end is in contact with the push block; a water inlet hole is provided on the push block, and the diameter of the water inlet end of the water inlet hole is the same as the diameter of the nozzle structure; a vent hole is provided on the extension tube, the vent hole is connected to the second sliding area, and the limiting ring is used to cover the vent hole.

[0012] Furthermore, a first step is formed between the first sliding area and the interior of the extension tube, a second step is formed between the second sliding area and the first sliding area, the first step is used to install the elastic member, and the second step is used to limit the travel of the push block.

[0013] Furthermore, the end of the extension pipe is a flange structure.

[0014] Furthermore, the limiting ring is slidably matched with the second sliding area through a sliding assembly.

[0015] Furthermore, the sliding assembly includes a sliding recess arranged on the limiting ring and a sliding protrusion arranged in the second sliding area, and the sliding protrusion is slidably matched with the sliding recess.

[0016] Furthermore, the elastic member is a spring or a spring sheet.

[0017] Furthermore, the nozzle structure includes a nozzle and a booster head, and the nozzle and the extension pipe are detachably connected through the flange structure; the booster head is threadedly installed at the end of the nozzle, and there is a spray hole in the booster head, the aperture of the spray hole is smaller than the inner diameter of the extension pipe, and the aperture of the extension pipe is the same as the aperture of the water inlet hole.

[0018] Furthermore, a protective sleeve is provided on the outer wall of the nozzle.

[0019] Furthermore, a second spring is arranged between the boosting head and the protective sleeve, one end of the second spring is in contact with the end of the boosting head, and the other end of the second spring is connected to the end of the protective sleeve.

[0020] Furthermore, a sealing groove is provided on the limiting ring, and a sealing gasket is provided inside the sealing groove.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The utility model mainly comprises a nozzle structure and a gas-liquid mixing structure, and the gas-liquid mixing structure is detachably arranged on the nozzle structure; in actual use, the staff installs the extension tube on the nozzle structure, at this time, the limit ring blocks and seals the vent hole, and then introduces water and gas into the extension tube, at this time, the push block moves toward the direction close to the nozzle structure after being subjected to the pressure of the water, and when the push block moves, the push block compresses the elastic part, and the limit ring slides inside the second sliding area, and because the limit block slides with the push block, the vent hole that was originally blocked is no longer blocked by the limit ring. The air is ventilated to the inside of the nozzle, and the gas and liquid are mixed and finally ejected from the end of the nozzle structure. In this process, when the water pressure entering the extension tube becomes smaller, it means that the amount of water entering the extension tube becomes less, and the liquid cannot fill the nozzle structure after passing through the water inlet hole on the push block. At this time, the thrust of the water pressure on the push block is reduced, and a part of the air hole is blocked by the push block, and the air intake is reduced, thereby achieving the purpose of automatically matching the air intake of the air hole with the amount of water intake. The advantage of this setting is that the size of the air intake of the air hole can be matched with the amount of water intake, so that the ratio of gas-liquid mixing is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of the utility model.

[0025] Figure 2It is a side view of the utility model.

[0026] Figure 3 This is a schematic diagram of the structure of the second embodiment of the present utility model.

[0027] In the figure, 101-extension tube, 102-push block, 103-elastic member, 104-first sliding area, 105-second sliding area, 106-limiting ring, 107-water inlet hole, 108-vent hole, 109-first step, 110-second step, 111-sliding depression, 112-sliding protrusion, 113-nozzle, 114-boosting head, 115-injection hole, 116-protective cover, 117-second spring, 118-sealing groove, 119-sealing gasket. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the embodiments, which are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in the field without creative work are all within the protection scope of the present invention.

[0029] See also Figure 1-3 As shown, this embodiment discloses a high-efficiency injector, including a nozzle structure and a gas-liquid mixing structure, wherein the gas-liquid mixing structure is detachably arranged on the nozzle structure;

[0030] The nozzle structure is used to increase the flow rate of the liquid when the liquid is sprayed out; the gas-liquid mixing structure is used to achieve better mixing between gas and liquid;

[0031] The gas-liquid mixing structure includes an extension tube 101, a push block 102 and an elastic member 103. The extension tube 101 is provided with a first sliding area 104 and a second sliding area 105. The push block 102 is provided with a limit ring 106. The push block 102 is used to slide inside the first sliding area 104. The limit ring 106 is used to slide inside the second sliding area 105. The elastic member 103 is installed in the first sliding area 104. One end of the elastic member 103 is connected to the extension tube 101, and the other end is in contact with the push block 102. The push block 102 is provided with a water inlet hole 107, and the diameter of the water inlet end of the water inlet hole 107 is the same as the diameter of the nozzle structure. The extension tube 101 has an air vent 108, which is connected to the second sliding area 105, and the limit ring 106 is used to cover the air vent 108.

[0032] The utility model mainly comprises a nozzle structure and a gas-liquid mixing structure, and the gas-liquid mixing structure can be detachably arranged on the nozzle structure; in actual use, the staff installs the extension tube 101 on the nozzle structure, at this time, the limit ring 106 blocks and seals the vent 108, and then introduces water and gas into the extension tube 101. At this time, the push block 102 moves toward the direction close to the nozzle structure after receiving the pressure of the water. When the push block 102 moves, the push block 102 compresses the elastic member 103, and the limit ring 106 slides inside the second sliding area 105. Since the limit block slides with the push block 102, the originally blocked vent is no longer affected by the limit ring 1 06 is blocked to ventilate the inside of the nozzle, and the gas and liquid are mixed and finally ejected from the end of the nozzle structure. In this process, when the water pressure entering the extension tube 101 becomes smaller, it means that the amount of water entering the extension tube 101 becomes less, and the liquid cannot fill the nozzle structure after passing through the water inlet hole 107 on the push block 102. At this time, the thrust of the water pressure on the push block 102 is reduced, and a part of the air hole 108 is blocked by the push block 102, and the air intake is reduced, thereby achieving the purpose of automatically matching the air intake of the air hole 108 with the amount of water intake. The advantage of this setting is that the size of the air intake of the air hole 108 can be matched with the amount of water intake, so that the ratio of gas-liquid mixing is more uniform.

[0033] In some embodiments, a first step 109 is formed between the first sliding area 104 and the inside of the extension tube 101, and a second step 110 is formed between the second sliding area 105 and the first sliding area 104. The first step 109 is used to install the elastic member 103, and the second step 110 is used to limit the travel of the push block 102.

[0034] In actual use, the first step 109 and the second step 110 are provided to install the elastic member 103 and to limit the travel of the push block 102 respectively.

[0035] In some embodiments, the end of the extension tube 101 is a flange structure.

[0036] In actual use, both ends of the extension tube 101 are flange structures, and the purpose of providing the flange structure is to facilitate the installation of the extension tube 101.

[0037] In some embodiments, the limiting ring 106 is slidably matched with the second sliding area 105 via a sliding assembly.

[0038] In actual use, the purpose of providing the sliding assembly is to enable the limiting ring 106 to slide more smoothly inside the second sliding area 105 .

[0039] In some embodiments, the sliding assembly includes a sliding recess 111 disposed on the limiting ring 106 and a sliding protrusion 112 disposed in the second sliding area 105 , and the sliding protrusion 112 is slidably matched with the sliding recess 111 .

[0040] In actual use, the sliding protrusion 112 and the sliding recess 111 are provided to limit the sliding track of the limiting ring 106 so that the limiting ring 106 is more stable when sliding.

[0041] In some embodiments, the elastic member 103 is a spring or a spring.

[0042] As an optional implementation, in this embodiment, the elastic member 103 is a spring. When the push block 102 slides due to water pressure, the spring will be compressed. When no water enters the extension tube 101, the spring pushes the push block 102 to reset. At this time, the limit ring 106 blocks the vent 108 again, and the gas cannot enter the extension tube 101. This arrangement can save the use of valves and save production costs.

[0043] In some embodiments, the nozzle structure includes a nozzle 113 and a booster head 114, and the nozzle 113 and the extension tube 101 are detachably connected through the flange structure; the booster head 114 is threadedly installed on the end of the nozzle 113, and the booster head 114 has a spray hole 115, and the aperture of the spray hole 115 is smaller than the inner diameter of the extension tube 101, and the aperture of the extension tube 101 is the same as the aperture of the water inlet hole 107.

[0044] During actual use, the liquid mixed with the gas enters the nozzle 113 and is finally ejected from the booster head 114. The aperture of the extension tube 101 is the same as the aperture of the water inlet 107. The purpose is to make the water pressure passing through the water inlet 107 the same as the water pressure entering the extension tube 101. Since the aperture of the injection hole 115 is smaller than the inner diameter of the extension tube 101, the pressure of the liquid passing through the injection hole 115 will increase, thereby achieving the purpose of pressurization.

[0045] In some embodiments, a protective cover 116 is disposed on the outer wall of the nozzle 113 .

[0046] In actual use, the purpose of providing the protective cover 116 is to protect the nozzle 113 .

[0047] In some embodiments, a second spring 117 is disposed between the boost head 114 and the protective cover 116 , and one end of the second spring 117 contacts the end of the boost head 114 , and the other end of the second spring 117 is connected to the end of the protective cover 116 .

[0048] In actual use, the purpose of providing the second spring 117 is to make the connection between the booster head 114 and the protective cover 116 more stable.

[0049] In some embodiments, a sealing groove 118 is further provided on the limiting ring 106 , and a sealing gasket 119 is provided inside the sealing groove 118 .

[0050] In actual use, the sealing groove 118 and the sealing gasket 119 are provided to form a seal between the vent hole 108 and the second sliding area 105 to prevent gas leakage.

[0051] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0052] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0053] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency ejector, characterized in that: It includes a nozzle structure and a gas-liquid mixing structure, and the gas-liquid mixing structure is detachably arranged on the nozzle structure; The nozzle structure is used to increase the flow rate of the liquid when the liquid is sprayed out; the gas-liquid mixing structure is used to achieve better mixing between gas and liquid; The gas-liquid mixing structure comprises an extension tube (101), a push block (102) and an elastic member (103); a first sliding area (104) and a second sliding area (105) are arranged in the extension tube (101); a limit ring (106) is arranged on the push block (102); the push block (102) is used to slide inside the first sliding area (104); the limit ring (106) is used to slide inside the second sliding area (105); the elastic member (103) is installed in the first sliding area (104); In the sliding area (104), one end of the elastic member (103) is connected to the extension tube (101), and the other end is in contact with the push block (102); a water inlet hole (107) is provided on the push block (102), and the diameter of the water inlet end of the water inlet hole (107) is the same as the diameter of the nozzle structure; the extension tube (101) is provided with a vent hole (108), the vent hole (108) is connected to the second sliding area (105), and the limit ring (106) is used to cover the vent hole (108).

2. A high-efficiency ejector according to claim 1, characterized in that: A first step (109) is formed between the first sliding area (104) and the interior of the extension tube (101), and a second step (110) is formed between the second sliding area (105) and the first sliding area (104). The first step (109) is used to install the elastic member (103), and the second step (110) is used to limit the travel of the push block (102).

3. A high-efficiency ejector according to claim 1, characterized in that: The end of the extension pipe (101) is a flange structure.

4. A high-efficiency ejector according to claim 1, characterized in that: The limiting ring (106) is slidably matched with the second sliding area (105) via a sliding assembly.

5. A high-efficiency ejector according to claim 4, characterized in that: The sliding assembly comprises a sliding recess (111) arranged on the limiting ring (106) and a sliding protrusion (112) arranged in the second sliding area (105), and the sliding protrusion (112) is slidingly matched with the sliding recess (111).

6. A high-efficiency ejector according to claim 1, characterized in that: The elastic member (103) is a spring or a spring sheet.

7. A high-efficiency ejector according to claim 3, characterized in that: The nozzle structure comprises a nozzle (113) and a booster head (114); the nozzle (113) and the extension pipe (101) are detachably connected via the flange structure; the booster head (114) is threadedly mounted on the end of the nozzle (113); a spray hole (115) is provided in the booster head (114); the diameter of the spray hole (115) is smaller than the inner diameter of the extension pipe (101); and the diameter of the extension pipe (101) is the same as the diameter of the water inlet hole (107).

8. A high-efficiency ejector according to claim 7, characterized in that: A protective sleeve (116) is provided on the outer wall of the nozzle (113).

9. A high-efficiency ejector according to claim 8, characterized in that: A second spring (117) is arranged between the boosting head (114) and the protective sleeve (116); one end of the second spring (117) contacts the end of the boosting head (114), and the other end is connected to the end of the protective sleeve (116).

10. A high-efficiency ejector according to claim 1, characterized in that: A sealing groove (118) is also provided on the limiting ring (106), and a sealing gasket (119) is provided inside the sealing groove (118).

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