Pressure control device for eyewash equipment

Abstract

The utility model relates to the technical field of eyewash equipment, in particular to an eyewash equipment pressure control device which is detachably connected to the lower portion of the eyewash equipment and comprises a connecting pipe detachably connected with the eyewash equipment and internally provided with a filter part, and a pressure sensor connected with the filter part. The fixing seat is used for supporting and fixing the connecting pipe, and the connecting pipe is detachably connected with the fixing seat; when the control device designed by the utility model is assembled and connected with the eyewash equipment, the maximum water pressure of the eyewash equipment can be controlled, so that the problem that eyes are damaged due to overhigh water pressure when the conventional eyewash equipment is used can be avoided; when the valve is opened, the internal opening and closing component is separated from the driving component, and the opening and closing component can realize automatic closing of the water path, so that compared with a traditional valve control mode, the operation is simpler and more convenient, and the use reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of eyewashers, in particular to a pressure control device for an eyewasher. Background Art

[0002] Bird's nest is a precious food ingredient made from the solidified saliva of swallows, and is believed to have nourishing and health-promoting effects. During the processing of bird's nests, physical and chemical laboratories generally use eyewashers to clean the eyes of laboratory personnel.

[0003] At present, the structure of an eyewash station generally consists of a pipe, a switch and a nozzle. The switch is used to control the on and off of the water channel. For example, a handheld press-type eyewash station disclosed in Chinese patent announcement number "CN209048647U" drives the valve stem to move by squeezing the handle, so that the water inlet and the water outlet of the eyewash station body are connected. The operation is simple, and when closing the eyewash station, under the action of the reset spring, only the handle needs to be released, and the opening and closing operation of the eyewash station can be completed with one hand.

[0004] In the actual one-handed operation process, the maximum water pressure control of the entire water circuit is not so accurate. The operator is accustomed to holding the switch at the maximum position. When the switch is too large, the water pressure is too high and it is easy to cause damage to the eyes of laboratory personnel. Based on this, in order to achieve the control and protection of the maximum water pressure of the eyewash to avoid problems such as excessive water pressure during operation, we propose an eyewash pressure control device. Utility Model Content

[0005] The utility model aims to solve the disadvantages in the prior art that when the switching value is too large, the water pressure is too high and the eyes of laboratory personnel are easily damaged, and an eyewash pressure control device is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] Design an eyewash pressure control device, which can be detachably connected to the bottom of the eyewash, including:

[0008] A connecting pipe is detachably connected to the eyewash station, and a filter is placed inside the connecting pipe;

[0009] A fixing seat, used to support and fix the connecting pipe, the connecting pipe and the fixing seat being detachably connected;

[0010] Wherein, an opening and closing component for controlling water flow is also arranged inside the fixing seat, and a driving component for opening and closing the opening and closing component is arranged in the connecting pipe.

[0011] Furthermore, flanges are provided on the top of the connecting pipe and the bottom of the eyewash station, and the two flanges are fixed by fasteners.

[0012] Furthermore, the opening and closing component includes a ring platform and a retaining ring fixedly installed in the fixing seat, an elastic member is placed above the ring platform, a sealing ball is placed on the top of the elastic member, and the sealing ball is sealed in the inner hole of the retaining ring.

[0013] Furthermore, the ring platform is threadedly connected to the fixing seat, a horizontal plate is fixedly connected in the inner hole of the ring platform, and a tool hole is arranged on the horizontal plate.

[0014] Furthermore, the elastic member is a tower-shaped spring, the bottom of which is placed on the ring platform, and the top of which contacts the sealing ball.

[0015] Furthermore, the driving component includes a push rod arranged in the connecting pipe, and the push rod is in conflict with the sealing ball.

[0016] Furthermore, an adjusting disk is arranged on the top of the push rod, a channel is provided on the end surface of the adjusting disk, and the adjusting disk is threadedly connected to the inside of the connecting pipe.

[0017] Furthermore, a placement ring is provided on the inner side of the bottom of the connecting tube, the filter element is placed on the placement ring, and a hole for a driving component to pass through is provided in the middle of the filter element.

[0018] Furthermore, a first sealing member is provided between the connecting pipe and the bottom of the eyewash station, and a second sealing member in contact with the bottom of the connecting pipe is placed on the top of the retaining ring.

[0019] Furthermore, the connecting pipe is threadedly connected to the fixing seat.

[0020] The utility model proposes an eyewash pressure control device, which has the beneficial effect that the control device designed by the utility model can realize the control of the maximum water pressure of the eyewash when it is assembled and connected with the eyewash, so as to avoid the problem of damage to eyes due to excessive water pressure when the existing eyewash is used. Secondly, in the utility model, when the connecting pipe is disassembled and repaired, the internal opening and closing components are separated from the driving components. At this time, the opening and closing components can realize automatic shutoff of the water channel. Therefore, compared with the traditional valve control method, the operation is simpler and more convenient, and the reliability of use is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a side view of the utility model;

[0022] Figure 2 It is a three-dimensional diagram of the utility model;

[0023] Figure 3 This is a schematic diagram of the connecting pipe structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the driving component of the utility model;

[0025] Figure 5 It is a schematic diagram of the ring platform structure of the utility model.

[0026] In the figure: 1. eyewash; 11. flange; 12. first sealing member; 2. connecting pipe; 21. filter element; 22. placement ring; 23. second sealing member; 3. fixing seat; 4. opening and closing member; 41. ring platform; 42. retaining ring; 43. elastic member; 44. sealing ball; 45. cross plate; 46. tool hole; 5. driving member; 51. ejector rod; 52. adjusting disk; 53. channel. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Reference Figure 1-5 An embodiment of the utility model discloses an eyewash pressure control device. Specifically, the control device is detachably connected to the bottom of the eyewash 1, and includes a connecting pipe 2, which is detachably connected to the eyewash 1. A filter 21 is placed inside the connecting pipe 2. In this embodiment, the filter 21 is configured as a filter net. The filter 21 is used to filter impurities in the water and also to slow down the water flow rate to avoid excessive water pressure and danger to the eyes of personnel during use. Of course, the mesh number of the filter net can be adaptively selected by technicians in the relevant field. Technicians in the relevant field know that the smaller the mesh number of the filter net, the more obvious the effect of reducing the water flow rate.

[0029] and a fixing seat 3, used to support and fix the connecting pipe 2, the outer side of the fixing seat 3 is provided with a connecting portion, through which the fixing seat 3 can be fixed to the position where it needs to be installed. Further, in this embodiment, the connecting pipe 2 and the fixing seat 3 are detachably connected, and the detachable connection structure design can achieve a certain convenience during installation or maintenance. Specifically, in some preferred embodiments, the connecting pipe 2 and the fixing seat 3 are threadedly connected in the utility model;

[0030] An opening and closing component 4 for controlling water flow is also arranged inside the fixing seat 3 , and a driving component 5 for opening and closing the opening and closing component 4 is arranged in the connecting pipe 2 .

[0031] In some embodiments, flanges 11 are provided at the top of the connecting pipe 2 and the bottom of the eyewash 1 in the utility model, and the two flanges 11 are fixed together by fasteners. In addition, it should be noted that a first seal 12 is provided between the connecting pipe 2 and the bottom of the eyewash 1 in the present embodiment, and the first seal 12 is preferably provided as a sealing ring. During assembly, the two flanges 11 are first fixed in position by fasteners such as bolts, so that the connecting pipe 2 and the eyewash 1 can be connected. The provided first seal 12 is used to improve the connection sealing between the connecting pipe 2 and the eyewash 1 to avoid water leakage.

[0032] Furthermore, the opening and closing component 4 in the present embodiment includes a ring platform 41 and a retaining ring 42 fixedly installed in the fixing seat 3, an elastic member 43 is placed above the ring platform 41, a sealing ball 44 is placed on the top of the elastic member 43, and the sealing ball 44 is blocked in the inner hole of the retaining ring 42, that is, in the present embodiment, the sealing ball 44 is supported by the elastic member 43 so that the sealing ball 44 can be clamped in the inner hole of the retaining ring 42 to achieve the closure of the waterway. Of course, technicians in the relevant field know that in the present embodiment, the diameter of the sealing ball 44 should be larger than the aperture of the inner hole of the retaining ring 42, so as to ensure the sealing of the waterway shutdown.

[0033] On the basis of the above-mentioned embodiment, the ring stage 41 in this embodiment is threadedly connected to the fixing seat 3, and a horizontal plate 45 is fixedly connected in the inner hole of the ring stage 41. The horizontal plate 45 is provided with a tool hole 46. The tool hole 46 is used for disassembly with an external tool. In some embodiments, a slotted hole can be provided in the tool hole 46, and a flat-blade screwdriver should be selected as the external tool. The end of the screwdriver is inserted into the above-mentioned slotted hole and rotated to remove the ring stage 41 from the inside of the fixing seat 3, so as to facilitate the replacement of the internal elastic member 43 and the sealing ball 44.

[0034] In addition, in the present embodiment, in actual operation, the elastic force of the elastic member 43 can be adjusted by adjusting the position of the above-mentioned ring platform 41. For example, when the distance between the ring platform 41 and the retaining ring 42 is reduced, the elastic contraction force of the elastic member 43 becomes larger. In this way, after long-term use, when the reverse thrust of the elastic member 43 is reduced, it is difficult for the sealing ball 44 to return to its original position. The reverse thrust of the above-mentioned elastic member 43 can be increased by adjusting the position of the ring platform 41, so that when the connecting pipe 2 is separated from the fixing seat 3, the elastic member 43 can provide a larger reverse thrust to make the sealing ball 44 snap into the inner hole of the retaining ring 42, thereby ensuring the sealing of the waterway shutdown.

[0035] In addition, in this embodiment, a second seal 23 in contact with the bottom of the connecting pipe 2 is placed on the top of the retaining ring 42. Of course, the second seal 23 is also configured as a sealing ring to improve the connection sealing between the connecting pipe 2 and the fixing seat 3 to avoid water leakage.

[0036] Specifically, in this embodiment, the elastic member 43 is a conical spring, the bottom of which is placed on the ring platform 41 , and the top of which contacts the sealing ball 44 .

[0037] In some embodiments, the driving component 5 in the present invention includes a push rod 51 disposed in the connecting tube 2 , and the push rod 51 conflicts with the sealing ball 44 .

[0038] Of course, it is also necessary to consider adjusting the interference depth of the push rod 51 within a certain range so as to control the maximum pressure when the water channel is open. In the utility model, an adjusting disk 52 is provided on the top of the push rod 51, and a channel 53 is provided on the end face of the adjusting disk 52. The adjusting disk 52 is threadedly connected to the inside of the connecting pipe 2.

[0039] In summary, when in use, the push rod 51 can be rotated to adaptively adjust the length of the push rod 51 extending from the connecting pipe 2. The purpose of adjusting the length is to control the separation distance between the sealing ball 44 and the retaining ring 42, so as to achieve the control of the maximum water pressure. After the adjustment is completed, the connecting pipe 2 and the fixing seat 3 can be threadedly connected and fixed. At this time, the push rod 51 contacts the sealing ball 44 to move it, so that the water path is connected, and the eyewash is operated by pressing the holding switch on the eyewash.

[0040] Of course, when the internal filter element 21 needs to be disassembled and replaced or the maximum water pressure needs to be further adjusted, the top rod 51 of the detachable connecting pipe 2 is separated from the sealing ball 44, and under the resistance of the elastic member 43, the sealing ball 44 is snapped into the inner hole of the retaining ring 42 to achieve water circuit closure. It can be seen that in addition to controlling the maximum water pressure of the entire water circuit during use, the device can also automatically close the water circuit during disassembly and maintenance, thereby improving the convenience of operation.

[0041] It should be noted that in this embodiment, a placement ring 22 is provided on the inner side of the bottom of the connecting tube 2, the filter element 21 is placed on the placement ring 22, and the middle part of the filter element 21 has a hole for the driving component 5 to pass through, that is, the filter element 21 in this embodiment is movably placed to facilitate taking, replacement and installation.

[0042] In summary, the control device designed in the utility model can realize the control of the maximum water pressure of the eyewash 1 when it is assembled and connected with the eyewash 1, so as to avoid the problem of damage to the eyes due to excessive water pressure when the existing eyewash 1 is in use. Secondly, in the utility model, when the connecting pipe 2 is disassembled and repaired, the internal opening and closing component 4 is separated from the driving component 5. At this time, the opening and closing component 4 can realize automatic shutoff of the water channel. Therefore, compared with the traditional valve control method, the operation is simpler and more convenient, and the reliability of use is improved.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An eyewash pressure control device, detachably connected to the bottom of the eyewash (1), characterized in that: include: A connecting pipe (2) is detachably connected to the eyewash station (1), and a filter element (21) is placed inside the connecting pipe (2); A fixing seat (3) for supporting and fixing the connecting pipe (2), wherein the connecting pipe (2) is detachably connected to the fixing seat (3); An opening and closing component (4) for controlling water flow is also arranged inside the fixing seat (3), and a driving component (5) for opening and closing the opening and closing component (4) is arranged in the connecting pipe (2); The opening and closing component (4) comprises a ring platform (41) and a retaining ring (42) fixedly mounted in the fixing seat (3); an elastic member (43) is placed above the ring platform (41); a sealing ball (44) is placed on the top of the elastic member (43); and the sealing ball (44) is sealed in the inner hole of the retaining ring (42).

2. An eyewash pressure control device according to claim 1, characterized in that: The top of the connecting pipe (2) and the bottom of the eyewash station (1) are both provided with flanges (11), and the two flanges (11) are fixed by fasteners.

3. An eyewash pressure control device according to claim 1, characterized in that: The annular platform (41) is threadedly connected to the fixing seat (3), a transverse plate (45) is fixedly connected to the inner hole of the annular platform (41), and a tool hole (46) is provided on the transverse plate (45).

4. An eyewash pressure control device according to claim 1, characterized in that: The elastic member (43) is a conical spring, the bottom of which is placed on the ring platform (41) and the top of which contacts the sealing ball (44).

5. The eyewash pressure control device according to claim 1, characterized in that: The driving component (5) comprises a push rod (51) arranged in the connecting pipe (2), and the push rod (51) is in conflict with the sealing ball (44).

6. An eyewash pressure control device according to claim 5, characterized in that: An adjusting disk (52) is arranged on the top of the push rod (51), a channel (53) is provided on the end surface of the adjusting disk (52), and the adjusting disk (52) is threadedly connected to the inside of the connecting pipe (2).

7. An eyewash pressure control device according to claim 1, characterized in that: A placement ring (22) is provided on the inner side of the bottom of the connecting pipe (2), the filter element (21) is placed on the placement ring (22), and a hole is provided in the middle of the filter element (21) for a driving component (5) to penetrate.

8. An eyewash pressure control device according to claim 7, characterized in that: A first sealing member (12) is provided between the connecting pipe (2) and the bottom of the eyewash station (1), and a second sealing member (23) in contact with the bottom of the connecting pipe (2) is placed on the top of the retaining ring (42).

9. An eyewash pressure control device according to any one of claims 1 to 8, characterized in that: The connecting pipe (2) and the fixing seat (3) are threadedly connected.

Images