Vacuumizing device of pulsation vacuum sterilizer

Abstract

The utility model discloses a vacuumizing device of a pulsation vacuum sterilizer, and belongs to the field of steam sterilizer equipment. Which comprises a circulating water tank (4) and an ejector (2), a water flow outlet (12) of the ejector (2) is connected into the circulating water tank (4), and is characterized in that a flow stabilizing mechanism (3) is arranged in the circulating water tank (4) and comprises a buffer pipe (16), and an upper port of the buffer pipe (16) is connected with the water flow outlet (12) of the ejector (2). According to the vacuumizing device of the pulsating vacuum sterilizer, the flow stabilizing mechanism is arranged in the circulating water tank, a buffer pipe in the flow stabilizing mechanism is utilized, a water source jetted by the ejector returns to the circulating water tank after being buffered by the buffer pipe, the effect of buffering water outlet pressure is achieved through the buffer pipe, and water spray is prevented from being formed in the circulating water tank; noise is reduced, meanwhile, the working stability of the sterilizer is improved, and the function of releasing water pressure is further achieved through the pressure release hole in the bottom of the buffer pipe.

Description

Technical Field

[0001] The invention discloses a vacuum pumping device for a pulsating vacuum sterilizer, belonging to the field of steam sterilizer equipment. Background Art

[0002] The pulsating vacuum pressure steam sterilizer (referred to as pulsating vacuum sterilizer) is a sterilization equipment widely used in the medical field. It is a medical device that achieves the sterilization of high temperature and moisture resistant items by repeatedly alternately extracting vacuum and filling steam in the sterilization chamber to finally reach the set pressure and temperature. When the pulsating vacuum sterilizer of the prior art performs the vacuum operation on the sterilization chamber, an ejector is generally used. The principle is roughly as follows: a circulating water tank and an ejector (Venturi ejector) are set, the inlet of the circulating pump is connected to the water tank, the outlet is connected to the water inlet of the ejector, and the water outlet of the ejector is connected to the circulating water tank. When the circulating pump is started, the water source in the circulating water tank is circulated through the ejector, and the air intake of the ejector is connected to the sterilization chamber. In the process of the water source in the circulating water tank circulating through the ejector, the gas in the sterilization chamber will be drawn into the air intake of the ejector, thereby achieving the vacuum operation of the sterilization chamber.

[0003] Although the operation of evacuating the sterilization chamber by using an ejector can quickly reach a preset vacuum degree in the sterilization chamber, it also has certain defects: when the medical steam sterilizer is evacuated by using an ejector, the water pressure at the ejector outlet is relatively high and the water vapor is mixed. Therefore, when the water source passes through the ejector and is sprayed into the circulating water tank again, water pressure fluctuations cause water splashing, which not only makes the equipment work noisy, but also affects the stability of the equipment to a certain extent. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and to provide a vacuum extraction device for a pulsating vacuum sterilizer by arranging a flow stabilizing mechanism in a circulating water tank and utilizing a buffer tube in the flow stabilizing mechanism so that the water source injected by the ejector returns to the circulating water tank after the buffering effect of the buffer tube, and utilizing the buffer tube to buffer the water outlet pressure, thereby avoiding the formation of water splashes in the circulating water tank, reducing noise and improving the working stability of the sterilizer.

[0005] The technical solution adopted by the utility model to solve its technical problem is: the vacuum extraction device of the pulsating vacuum sterilizer includes a circulating water tank and an ejector, the water flow outlet of the ejector is connected to the circulating water tank, and is characterized in that: a flow stabilizing mechanism is arranged in the circulating water tank, the flow stabilizing mechanism includes a buffer tube, and the upper port of the buffer tube is connected to the water flow outlet of the ejector.

[0006] Preferably, the flow stabilizing mechanism comprises an upper fixing frame, a flow stabilizing interface is arranged at the lower part of the upper fixing frame, the water flow outlet is docked with the flow stabilizing interface after entering the upper fixing frame, and the buffer tube is connected to the lower port of the flow stabilizing interface.

[0007] Preferably, the upper fixing frame includes a fixing ring, and a plurality of connecting rods are evenly arranged around the circumference of the fixing ring, the tops of the connecting rods pass through and protrude from the surface of the fixing ring, and the lower parts of all the connecting rods are located at the outer ring of the flow stabilizing interface and fixed to the flow stabilizing interface.

[0008] Preferably, a circulating water inlet is provided at the top of the circulating water tank, and a vacuum port is provided at the side of the circulating water tank; the ejector is located inside the circulating water tank, the water inlet of the ejector is led out from the circulating water inlet, and the air intake port of the ejector is connected to the vacuum port.

[0009] Preferably, a filter bag is also provided in the circulating water tank, and the filter bag is sleeved on the outside of the flow stabilizing mechanism.

[0010] Preferably, a fixing portion is provided at the upper port of the filter bag, an upper fixing hole is opened on the fixing portion, and the upper port of the filter bag is hung with the upper fixing frame of the flow stabilizing mechanism through the upper fixing hole.

[0011] Preferably, a lower fixing frame is fixed at the bottom of the circulating water tank, the lower fixing frame includes a plurality of vertically arranged upright poles, and lower fixing sleeves correspondingly sleeved on the outer sides of the upright poles are arranged at the lower part of the filter bag.

[0012] Preferably, the buffer tube is a rigid tube with a spiral structure.

[0013] Preferably, a plurality of pressure relief holes are provided around the bottom of the buffer tube.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the vacuum pumping device of the pulsating vacuum sterilizer, a flow stabilizing mechanism is arranged in the circulating water tank. By utilizing the buffer tube in the flow stabilizing mechanism, the water source ejected by the ejector returns to the circulating water tank after the buffering effect of the buffer tube. The buffer tube is utilized to buffer the water outlet pressure, thereby avoiding the formation of water splashes in the circulating water tank, reducing noise and improving the working stability of the sterilizer.

[0016] By opening a pressure relief hole at the lower part of the buffer tube, the pressure relief hole at the bottom of the buffer tube is further utilized to release the water pressure.

[0017] By setting a filter bag in the circulating water tank, the water source enters the filter bag from the discharge port of the buffer pipe and is filtered through the filter bag before being pumped out again by the circulating pump, thereby removing impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the vacuum device of the steam sterilizer.

[0019] Figure 2 for Figure 1 The schematic diagram of the structure after the filter bag is omitted.

[0020] Figure 3 This is a schematic diagram of the circulating water tank structure of the vacuum device of the steam sterilizer.

[0021] Figure 4 This is a schematic diagram of the ejector structure of the vacuum device of the steam sterilizer.

[0022] Figure 5 This is a schematic diagram of the flow stabilizing mechanism structure of the vacuum device of the steam sterilizer.

[0023] Figure 6 Schematic diagram of the filter bag structure of the vacuum device of the steam sterilizer.

[0024] Among them: 1, water replenishment port 2, ejector 3, flow stabilizing mechanism 4, circulating water tank 5, circulating water outlet 6, filter bag 7, lower fixing frame 8, circulating water inlet 9, vacuum port 10, water flow inlet 11, air suction port 12, water flow outlet 13, fixing ring 14, connecting rod 15, flow stabilizing interface 16, buffer tube 17, pressure relief hole 18, upper fixing hole 19, bag body 20, lower fixing sleeve. DETAILED DESCRIPTION

[0025] Figures 1 to 6 It is the best embodiment of the utility model, and the following Figures 1 to 6 The utility model is further described.

[0026] like Figure 1~2 As shown, a vacuum extraction device of a pulsating vacuum sterilizer includes a circulating water tank 4 in which an ejector 2 is arranged.

[0027] Combination Figure 3 The circulating water tank 4 is a rectangular box body, with a circulating water inlet 8 in the middle of the top surface of the circulating water tank 4, and a water replenishment port 1 on one side of the top surface of the box body 4. A vacuum port 9 is provided at the upper part of one of the side surfaces of the circulating water tank 4, and a circulating water outlet 5 is provided at the lower part of the side surface. Figure 4 The ejector 2 is implemented by a common venturi ejector in the art, including a water inlet 10, a water outlet 12, and an air inlet 11 located on the side. The working principle of the ejector 2 is common knowledge in the art and will not be described here.

[0028] The ejector 2 is placed vertically in the circulating water tank 4, and its water inlet 10 is led out from the circulating water inlet 8 at the top of the circulating water tank 4. The air inlet 11 of the ejector 2 is connected to the inner port of the vacuum port 9 inside the circulating water tank 4. A circulating pump (not shown) is arranged outside the circulating water tank 4, and the outlet of the circulating pump is connected to the water inlet 10 of the ejector 2 through a pipeline, and the inlet of the circulating pump is connected to the circulating water outlet 5 through a pipeline. A lower fixing frame 7 is arranged at the bottom of the circulating water tank 4, a flow stabilizing mechanism 3 is fixed at the lower part of the ejector 2, and a filter bag 6 is arranged between the flow stabilizing mechanism 3 and the lower fixing frame 7.

[0029] like Figure 5 As shown, the flow stabilizing mechanism 3 includes an upper fixing frame, which includes a fixing ring 13 at the top. A plurality of connecting rods 14 are evenly arranged around the circumference of the fixing ring 13 , and the tops of the connecting rods 14 pass through the fixing ring 13 and protrude from the surface of the fixing ring 13 .

[0030] A flow stabilizing interface 15 is provided at the lower part of the fixing ring 13, and the lower parts of all the connecting rods 14 are located at the outer ring of the flow stabilizing interface 15 and fixed to the outer wall of the flow stabilizing interface 15. After the water outlet 12 of the ejector 2 enters the upper fixing frame, it docks with the upper port of the flow stabilizing interface 15. At the same time, the fixation of the flow stabilizing mechanism 3 and the ejector 2 is realized. A spiral buffer tube 16 is connected to the lower end of the flow stabilizing interface 15, and the buffer tube 16 is preferably a rigid interface, and a plurality of pressure relief holes 17 are opened around the lower end of the buffer tube 16.

[0031] like Figure 6 As shown, the filter bag 6 includes a bag body 19, which is a flexible cylindrical structure with an open upper end. A plurality of fixing parts are evenly arranged at the opening, and the fixing parts correspond to the connecting rods 14 one by one. An upper fixing hole 18 is provided on each fixing part, and the filter bag 6 is mounted on the outside of the flow stabilizing mechanism 3 from bottom to top through its upper port. The fixing belt on the top of the filter bag 6 extends upward to the upper fixing frame, and is mounted on the outside of the corresponding connecting rod 14 through the upper fixing hole 18 on the fixing part, so that the filter bag 6 is hung on the upper part of the flow stabilizing mechanism 3.

[0032] A plurality of lower fixing sleeves 20 are evenly arranged around the lower part of the filter bag 6. The lower fixing frame 7 comprises a triangular bottom frame, which is fixed to the bottom surface of the circulating water tank 4. A vertical rod perpendicular to the bottom surface of the circulating water tank 4 is respectively arranged at the three top corners of the triangular bottom frame. The filter bag 6 is placed inside the lower fixing frame 7 as a whole, and the three vertical rods in the lower fixing frame 7 pass through the lower fixing sleeve 20 on the outer periphery of the filter bag 6 one by one, fixing the filter bag 6 from the bottom.

[0033] The specific working process and working principle are as follows:

[0034] When the sterilization chamber needs to be vacuumed, the circulation pump outside the circulating water tank 4 is turned on. The circulating pump draws the water source in the circulating water tank 4 and sends it to the top of the circulating water tank 4, and connects to the water inlet 10 of the ejector 2. The water source is discharged from the water outlet 12 at the bottom of the ejector 2, and finally returns to the circulating water tank 4 to form a cycle. During the water circulation process, the air in the sterilization chamber is drawn into the air intake 11 of the ejector 2, and a vacuum is gradually formed.

[0035] The water source enters the flow stabilizing mechanism 3 through the water flow outlet 12 at the bottom of the ejector 2, and is sent into the flow stabilizing interface 15, and then flows into the buffer tube 16 through the flow stabilizing interface 15. The spiral structure of the buffer tube 16 buffers the water pressure, avoids the formation of water splashes in the circulating water tank 4, reduces noise, and improves the stability of the sterilizer. At the same time, the pressure relief hole 17 at the bottom of the buffer tube 16 further releases the water pressure. The water source enters the filter bag 6 from the outlet of the buffer tube 16, and is filtered by the filter bag 6 before being pumped out by the circulating pump again, which removes impurities.

[0036] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A vacuum extraction device for a pulsating vacuum sterilizer, comprising a circulating water tank (4) and an ejector (2), wherein a water outlet (12) of the ejector (2) is connected to the circulating water tank (4), and characterized in that: A flow stabilizing mechanism (3) is arranged in the circulating water tank (4), and the flow stabilizing mechanism (3) comprises a buffer tube (16), and an upper port of the buffer tube (16) is connected to a water flow outlet (12) of the ejector (2).

2. The vacuum extraction device of the pulsating vacuum sterilizer according to claim 1, characterized in that: The flow stabilizing mechanism (3) comprises an upper fixing frame, a flow stabilizing interface (15) is arranged at the lower part of the upper fixing frame, the water flow outlet (12) is connected to the flow stabilizing interface (15) after entering the upper fixing frame, and the buffer pipe (16) is connected to the lower end of the flow stabilizing interface (15).

3. The vacuum extraction device of the pulsating vacuum sterilizer according to claim 2, characterized in that: The upper fixing frame comprises a fixing ring (13), a plurality of connecting rods (14) are evenly arranged around the circumference of the fixing ring (13), the tops of the connecting rods (14) pass through and protrude from the surface of the fixing ring (13), and the lower parts of all the connecting rods (14) are located on the outer ring of the flow stabilizing interface (15) and are fixed to the flow stabilizing interface (15).

4. The vacuum extraction device of the pulsating vacuum sterilizer according to claim 2, characterized in that: A circulating water inlet (8) is provided at the top of the circulating water tank (4), and a vacuum port (9) is provided at the side of the circulating water tank (4); the ejector (2) is located inside the circulating water tank (4), a water flow inlet (10) of the ejector (2) is led out from the circulating water inlet (8), and an air intake port (11) of the ejector (2) is butted against the vacuum port (9).

5. The vacuum extraction device of the pulsating vacuum sterilizer according to claim 2, characterized in that: A filter bag (6) is also arranged in the circulating water tank (4), and the filter bag (6) is sleeved on the outside of the flow stabilizing mechanism (3).

6. The vacuum extraction device of the pulsating vacuum sterilizer according to claim 5, characterized in that: A fixing portion is provided at the upper end of the filter bag (6), an upper fixing hole (18) is provided on the fixing portion, and the upper end of the filter bag (6) is connected to the upper fixing frame of the flow stabilizing mechanism (3) through the upper fixing hole (18).

7. The vacuum extraction device of the pulsating vacuum sterilizer according to claim 6, characterized in that: A lower fixing frame (7) is fixed at the bottom of the circulating water tank (4), the lower fixing frame (7) comprising a plurality of vertically arranged upright poles, and lower fixing sleeves (20) correspondingly sleeved on the outside of the upright poles are arranged at the bottom of the filter bag (6).

8. The vacuum extraction device of the pulsating vacuum sterilizer according to claim 1, characterized in that: The buffer tube (16) is a rigid tube with a spiral structure.

9. The vacuum extraction device of the pulsating vacuum sterilizer according to claim 1 or 8, characterized in that: A plurality of pressure relief holes (17) are provided around the bottom of the buffer tube (16).

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