A steam jet pump

Abstract

The utility model discloses a steam jet pump, including the pump body and its inside chamber, the chamber inside is provided with mixing chamber, compression chamber, throat pipe and expansion chamber in proper order, and the communicating pipe is communicated with the chamber on the pump body, and the steam inlet and steam outlet of pump body and the communicating pipe are all set up a plurality of groups of through -hole for bolt to pass through on the one end away from the pump body, and the through -hole all is provided with fixed cylinder, and the fixed cylinder is provided with the locating cylinder, and the locating cylinder is provided with internal thread in, and the locating cylinder is located fixed cylinder outside one end and is equipped with gear, and the steam inlet and steam outlet and the communicating pipe each side to the pump body is provided with drive ring, and the drive ring inner wall is provided with the rack that is engaged with the gear, and the conventional pump body's each interface is all provided with a plurality of groups of bolt nut and is connected and is installed, and personnel one one is very troublesome to tighten and dismount, and it is not convenient when replacing maintenance, the utility model discloses can improve the dismounting efficiency of pump body butt joint.

Description

Technical Field

[0001] This utility model relates to the field of pump equipment technology, and in particular to a steam jet pump. Background Technology

[0002] A steam ejector, also known as a steam jet pump, is powered by high-pressure steam. It utilizes the available energy from the high-pressure steam throttling to increase the pressure of low-pressure steam, recovers the lost low-pressure steam using the energy of the high-pressure steam, and recovers the flash steam from high-temperature condensate, thereby comprehensively utilizing steam at different pressure levels to achieve significant energy-saving effects.

[0003] Traditional steam jet pumps include a pump body with a hollow chamber. Inside the pump body's chamber, from the steam inlet to the steam outlet, there are sequentially arranged a mixing chamber, a compression chamber, a throat pipe, and an expansion chamber. At one end of the pump body's steam inlet, there is also a connecting pipe for conveying steam. To facilitate connection with other connecting components, through holes are provided on the pump body's steam inlet, steam outlet, and connecting pipe. Personnel can fix the pump body to other connecting components by threading bolts and nuts through the through holes. Steam jet pumps are used based on the principle of jet technology and have certain advantages in terms of energy saving, safety, and ease of use.

[0004] However, each interface of the pump body is equipped with several sets of bolts and nuts for connection and installation. It is very troublesome for personnel to tighten and disassemble them one by one, which is inconvenient for replacement and maintenance. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a steam jet pump.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a steam jet pump, comprising a pump body and an internal chamber therein, wherein a mixing chamber, a compression chamber, a throat pipe and an expansion chamber are sequentially arranged inside the chamber, a connecting pipe is connected to the pump body and the chamber, and several sets of through holes for bolts to pass through are opened on the steam inlet and steam outlet of the pump body and the end of the connecting pipe away from the pump body, respectively, a fixed cylinder is provided at each of the through holes, a positioning cylinder is provided at each of the fixed cylinders, the positioning cylinder is provided with an internal thread, a gear is sleeved on the end of the positioning cylinder located outside the fixed cylinder, and a driving ring is provided on the side of the steam inlet, the steam outlet and the connecting pipe facing the pump body, and a rack that meshes with the gear is provided on the inner wall of the driving ring.

[0007] Preferably, each of the steam inlet, the steam outlet, and the connecting pipe is provided with a positioning plate at the end away from the pump body. Each of the steam inlet, the steam outlet, and the connecting pipe is provided with a support plate that is rotatably connected to the positioning plate. The positioning plate is provided with a fitting groove that engages with the top of the bolt.

[0008] Preferably, the support plate is provided with a guide groove on the side facing the positioning plate, and the outer wall of the positioning plate is provided with a guide block that is slidably connected to the guide groove.

[0009] Preferably, a knob is fitted on the outer wall of the drive ring.

[0010] Preferably, the positioning cylinder is slidably connected to the fixed cylinder, a limiting ring is provided on the inner wall of the end of the fixed cylinder away from the through hole, and an expansion ring is provided on the outer wall of the end of the positioning cylinder inside the fixed cylinder, wherein the inner diameter of the limiting ring is smaller than the outer diameter of the expansion ring.

[0011] Preferably, a telescopic spring is sleeved on the outside of the positioning cylinder. The telescopic spring is located between the limiting ring and the expanding ring, and the opposite ends of the telescopic spring are respectively connected to the side of the limiting ring and the expanding ring that are close to each other.

[0012] The beneficial effects of this utility model are as follows: By setting a fixed cylinder at the through hole and a positioning cylinder with internal threads at the fixed cylinder, the bolt passes through the through hole and is screwed into the internal threads of the positioning cylinder. A gear is sleeved on the positioning cylinder. A driving ring is set on the side of the steam inlet, steam outlet and connecting pipe facing the pump body. A rack that meshes with the gear is set in the driving ring. Compared with the prior art, this utility model can eliminate the need for personnel to disassemble and install the bolts at the through hole one by one. The rack in the driving ring meshes with the gears on each group of positioning cylinders to drive multiple groups of positioning cylinders simultaneously, so that each group of positioning cylinders is screwed into the bolts that are screwed into it. This reduces the amount of installation and disassembly work required when connecting the pump body to other components. At the same time, a positioning plate is set. The positioning plate has a fitting groove that fits into the top of the bolt, which can simultaneously position and limit the position of multiple groups of bolts, avoiding the problem of the positioning cylinder driving the bolt to rotate synchronously during the screwing process. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram illustrating the external mechanism of the pump body in one embodiment of the present invention;

[0014] Figure 2 This is an exploded view of a portion of the pump body mechanism in one embodiment of the present invention.

[0015] Figure 3 for Figure 2 Enlarged view of section A;

[0016] Figure 4 for Figure 2 Enlarged view of section B;

[0017] Figure 5 This is a side sectional view showing the internal and external mechanisms of the pump body in one embodiment of the present invention.

[0018] Figure 6 for Figure 5 Enlarged view of section C.

[0019] Reference numerals: 1. Pump body; 2. Mixing chamber; 3. Compression chamber; 4. Throat; 5. Expansion chamber; 6. Connecting pipe; 7. Steam inlet; 8. Steam outlet; 9. Through hole; 10. Fixed cylinder; 11. Positioning cylinder; 12. Internal thread; 13. Gear; 14. Rack; 15. Positioning plate; 16. Support plate; 17. Fitting groove; 18. Bolt; 19. Guide groove; 20. Guide block; 21. Knob; 22. Limiting ring; 23. Expansion ring; 24. Telescopic spring; 25. Drive ring. Detailed Implementation

[0020] The following description is only a preferred embodiment of the present utility model. The scope of protection is not limited to this embodiment. All technical solutions that fall within the scope of the present utility model should be protected by the present utility model. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present utility model should also be considered within the scope of protection of the present utility model.

[0021] It should be noted that in this document, relational terms such as first and second, or "connecting plate one, connecting plate two," are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0022] The directional terms mentioned in this embodiment, such as "up," "down," "left," and "right," are merely used to help those skilled in the art understand the relationships between various features or parts in conjunction with the accompanying drawings.

[0023] In this embodiment, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] like Figures 1 to 6As shown, a steam jet pump includes a pump body 1 and a chamber located therein. From left to right, the chamber contains a mixing chamber 2, a compression chamber 3, a throat pipe 4, and an expansion chamber 5. A connecting pipe 6 connects the pump body 1 to the mixing chamber 2. Several sets of through holes 9 for bolts 18 to pass through are provided at the steam inlet 7 and steam outlet 8 of the pump body 1, as well as at the end of the connecting pipe 6 away from the pump body 1. A fixed cylinder 10 is provided at each through hole 9. A positioning cylinder 11 is slidably disposed within the fixed cylinder 10. The fixed cylinder 10, the positioning cylinder 11, and the through holes 9 are concentrically arranged. An internal thread 12 is provided on the inner wall of the positioning cylinder 11 along its length. The positioning cylinder 11 is located outside the fixed cylinder 10. A gear 13 is fitted onto one end of the pump body 1. A drive ring 25 is provided on the side of the pump body 1 for the steam inlet 7, the steam outlet 8, and the connecting pipe 6. The three sets of drive rings 25 are respectively concentrically arranged with the steam inlet 7, the steam outlet 8, and the connecting pipe 6. A rack 14 that meshes with the gear 13 is provided on the inner wall of the drive ring 25 along its circumferential direction. In this embodiment, the rack 14 is arranged intermittently, and the width of the rack 14 is greater than the width of the gear 13. It should be noted that the rack 14 can also be arranged in a ring along the circumferential direction of the inner wall of the drive ring 25. The difference between the intermittent and ring arrangements is that rotating the drive ring 25 once will cause the gears 13 to rotate a different number of times.

[0025] Positioning plates 15 are respectively provided at the ends of the steam inlet 7, steam outlet 8, and connecting pipe 6 away from the pump body 1. The positioning plates 15 are arc-shaped and two sets of opposing positioning plates 15 can be joined to form a ring plate. Several sets of fitting grooves 17 are provided on the positioning plates 15 to fit with the top of the bolts 18. Support plates 16 are rotatably provided on the opposite sides of the outer walls of the steam inlet 7, steam outlet 8, and connecting pipe 6. The support plates 16 have guide grooves 19 along their length on the side facing the positioning plates 15. Guide blocks 20 are provided on the outer wall of the positioning plates 15 and are slidably connected to the guide grooves 19. A knob 21 is fitted on the wall to facilitate the rotation of the drive ring 25. A limit ring 22 is provided on the inner wall of the fixed cylinder 10 away from the through hole 9. An expansion ring 23 is fitted on the outer wall of the positioning cylinder 11 located inside the fixed cylinder 10. The inner diameter of the limit ring 22 is larger than the outer diameter of the positioning cylinder 11 but smaller than the outer diameter of the expansion ring 23. The purpose is to allow one end of the positioning cylinder 11 to slide inside the fixed cylinder 10 while being restricted in position to prevent it from sliding out of the fixed cylinder 10. A telescopic spring 24 is fitted on the outer wall of the positioning cylinder 11, and the telescopic spring 24 is located between the limit ring 22 and the expansion ring 23.

[0026] When there is no need to disassemble the pump body 1 at the connection with other components, the bolt 18 passes through the through hole 9 of other components and the through hole 9 on the pump body 1. The bolt 18 is screwed and fixed to the internal thread 12 inside the positioning cylinder 11. The telescopic spring 24 is in the extended state. The outer diameter of the gear 13 is larger than the inner diameter of the fixed cylinder 10. Figures 5 to 6 As shown, the gap between the side of the bolt 18 facing the through hole 9 and the through hole 9 is used to place the mating end of the connecting parts. The personnel can adjust the length of the bolt 18 according to the actual situation so that the length of the bolt 18 can be screwed into the internal thread 12 of the positioning cylinder 11 after passing through the through hole 9 on the connecting parts and the pump body 1, so that the right side of the gear 13 fits against the outer wall of the through hole 9. The purpose is to prevent the positioning cylinder 11 from being moved after the bolt 18 is screwed into the internal thread 12 of the positioning cylinder 11.

[0027] In this embodiment, the top of the bolt 18 is set with an external hexagon, and the fitting groove 17 adopts an inward concave shape that matches the top of the bolt 18.

[0028] When personnel need to separate the pump body 1 from the connecting parts, such as the separation at the steam inlet 7, they can first rotate the knob 21 on the driving ring 25 at the steam inlet 7 clockwise to drive the driving ring 25 to rotate. This will cause the rack 14 inside the ring 25 and the gear 13 on each set of through holes 9 at the steam inlet 7 to begin meshing and transmission. The gear 13 will drive the positioning cylinder 11 to rotate. During the rotation, due to the threaded engagement, the positioning cylinder 11 will begin to rotate and disengage from the bolt 18. The telescopic spring 24 will begin to compress until the bolt 18 disengages from the internal thread 12 of the positioning cylinder 11.

[0029] When docking is required, such as at the steam inlet 7, the operator first aligns the docking point of the connecting component with the outer wall of the steam inlet 7, ensuring that the through holes 9 on the connecting component correspond one-to-one with the through holes 9 at the steam inlet 7. Then, the bolt 18 is inserted, and the support plate 16 is rotated so that the positioning plate 15 is positioned at the docking point of the connecting component. The positioning plate 15 is slid to allow the top of the bolt 18 to be embedded in the fitting groove 17 on the positioning plate 15, and the positioning plate 15 is pushed to move so that the top of the bolt 18 is aligned with the outer wall of the through hole 9 on the connecting component. Then, the knob 21 on the drive ring 25 at the steam inlet 7 is rotated in reverse to indirectly drive the positioning cylinders 11 at the steam inlet 7 to rotate and connect with the bolt 18. Since the top of the bolt 18 is limited in the fitting groove 17, the bolt 18 will not be driven to rotate synchronously until the internal thread 12 on the positioning cylinder 11 is completely screwed into the bolt 18.

[0030] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A steam jet pump, comprising a pump body (1) and an internal chamber therein, wherein a mixing chamber (2), a compression chamber (3), a throat pipe (4), and an expansion chamber (5) are sequentially arranged inside the chamber; a connecting pipe (6) is provided on the pump body (1) and communicating with the chamber; and a plurality of through holes (9) for bolts (18) to pass through are provided on the steam inlet (7) and steam outlet (8) of the pump body (1) and on the end of the connecting pipe (6) away from the pump body (1). Its features are, A fixing cylinder (10) is provided at each of the through holes (9), and a positioning cylinder (11) is provided at each of the fixing cylinders (10). An internal thread (12) is provided inside the positioning cylinder (11), and a gear (13) is sleeved at one end of the positioning cylinder (11) outside the fixing cylinder (10). Each of the steam inlet (7), the steam outlet (8), and the connecting pipe (6) is provided with a drive ring (25) on the side facing the pump body (1). The inner wall of the drive ring (25) is provided with a rack (14) that meshes with the gear (13).

2. A steam jet pump according to claim 1, characterized in that, The steam inlet (7), the steam outlet (8), and the connecting pipe (6) are each provided with a positioning plate (15) at the end away from the pump body (1). The outer wall of the steam inlet (7), the steam outlet (8), and the connecting pipe (6) are rotatably provided with a support plate (16) connected to the positioning plate (15). The positioning plate (15) is provided with a fitting groove (17) that fits into the top of the bolt (18).

3. A steam jet pump according to claim 2, characterized in that, The support plate (16) is provided with a guide groove (19) on the side facing the positioning plate (15), and the outer wall of the positioning plate (15) is provided with a guide block (20) that is slidably connected to the guide groove (19).

4. A steam jet pump according to claim 1, characterized in that, A knob (21) is fitted on the outer wall of the drive ring (25).

5. A steam jet pump according to claim 1, characterized in that, The positioning cylinder (11) is slidably connected to the fixed cylinder (10). A limiting ring (22) is provided on the inner wall of the fixed cylinder (10) away from the through hole (9). An expansion ring (23) is provided on the outer wall of the positioning cylinder (11) inside the fixed cylinder (10). The inner diameter of the limiting ring (22) is smaller than the outer diameter of the expansion ring (23).

6. A steam jet pump according to claim 5, characterized in that, The positioning cylinder (11) is fitted with a telescopic spring (24), which is located between the limiting ring (22) and the expansion ring (23).

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