CN209933605U - Double-channel variable regulating valve for central negative pressure suction system - Google Patents
Double-channel variable regulating valve for central negative pressure suction system Download PDFInfo
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- CN209933605U CN209933605U CN201920495828.7U CN201920495828U CN209933605U CN 209933605 U CN209933605 U CN 209933605U CN 201920495828 U CN201920495828 U CN 201920495828U CN 209933605 U CN209933605 U CN 209933605U
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Abstract
The utility model relates to the field of medical equipment, concretely relates to two-channel variable regulating valve for central negative pressure suction system. The valve comprises a valve shell with an inlet end and an outlet end and a regulating valve, wherein a valve body cavity enclosing a valve body is arranged in the valve shell, and the valve body linearly moves along the valve body cavity; the upper and lower flow dividing passages of the regulating valve are selected by shifting the regulating valve up and down, so that the inlet end can be selected by the valve main body to form a stable upper and lower air passage which is connected with the outlet end in parallel; the upper knob outside the valve shell adjusts the drift diameter of the upper shunt passage through a screw adjusting mechanism of the valve main body; the lower shunt passage of the valve main body is a fixed path. After the negative pressure suction pipe is arranged at the negative pressure pipe end of the medical equipment needing negative pressure, the negative pressure suction pipe is connected to a central negative pressure suction system through a negative pressure pipe section, and the effects of quick constant pressure and variable pressure regulation can be achieved.
Description
Technical Field
The utility model relates to the field of medical equipment, concretely relates to two-channel variable regulating valve for central negative pressure suction system.
Background
Compared with the traditional mechanical suction system, the central negative pressure suction system has the advantages of being available at any time, continuous and continuous in negative pressure, capable of being communicated with the operating room, the rescue room, the treatment room of a hospital and the terminal of each ward, strong in stability and capable of effectively improving the ward environment; when the medical staff uses the negative pressure system, the operation is convenient and fast, the nursing to the patient is more timely, and the negative pressure suction system can be widely applied to the medical links of sucking and removing phlegm, blood, pus and other internal dirt, so that the central negative pressure suction system is popularized to various hospitals at present.
In order to ensure the safety of patients and have higher universality during the use of the central negative pressure suction system, the negative pressure of the central negative pressure suction system is usually set to a certain value of 0.05 plus or minus 0.005MPa, while when the negative pressure is used for sucking phlegm by adult patients in a common state, the negative pressure is preferably controlled to be 0.04 plus or minus 0.005MPa, and the negative pressure needs to be adjusted to be 0.04-0.05MPa in an emergency rescue state; for children with delicate respiratory tract, the negative pressure is required to be controlled within 0.03 +/-0.005 MPa, and when the conventional portable sputum suction pot is communicated with a central negative pressure suction system through a pipeline, the air pressure is required to be adjusted through a rotary valve in cooperation with an air pressure gauge, so that reasonable constant pressure is achieved. When the current rotary valve is adjusted, the frequent adjustment of the knob is needed in the process of constant pressure due to insufficient sensitivity, and particularly, when the valve is used for daily dealing with adult patients in the most common ordinary state, medical staff are needed to operate the valve for a certain time, so that medical resources are wasted to a certain extent.
Disclosure of Invention
An object of the utility model is to provide a two-channel variable governing valve for central negative pressure suction system, it is installed behind the negative pressure pipe end of the medical equipment who needs the negative pressure, is connected to the central negative pressure suction system of atmospheric pressure scope at 0.05MPa 0.005 scope through the negative pressure pipeline section, can play the effect of quick level pressure and variable pressure regulating.
In order to achieve the above purpose, the utility model adopts the following technical means to implement:
a two-channel variable regulating valve for a central negative pressure suction system comprises a valve shell with an inlet end and an outlet end and a regulating valve, wherein a valve body cavity enclosing a valve body is arranged in the valve shell, the valve body linearly moves along the valve body cavity, an upper flow dividing channel and a lower flow dividing channel of the regulating valve are selected by vertically shifting the regulating valve, and an inlet end can be selected by the valve body to form a stable upper air flow path and a stable lower air flow path and is connected with the outlet end in parallel; the upper knob outside the valve shell adjusts the drift diameter of the upper shunt passage through a screw adjusting mechanism of the valve main body; the lower shunt passage of the valve main body is a fixed path.
Furthermore, the valve housing comprises a main housing and a lower housing which can be locked with each other, the regulating valve is arranged in a valve main body cavity enclosed by the main housing and the lower housing, and the valve housing is provided with a magnetic part for adsorbing the valve main body to form a stable upper air flow passage and a stable lower air flow passage.
Furthermore, the inlet end forms an upper inlet shunt passage and a lower inlet shunt passage from the outside to the valve shell, the outlet end forms an upper outlet confluence passage and a lower outlet confluence passage from the inside to the outside of the valve shell, the valve body moves linearly along the cavity of the valve body, so that the upper shunt passage, the upper inlet shunt passage and the upper outlet confluence passage form an upper air passage, and the lower shunt passage, the lower inlet shunt passage and the lower outlet confluence passage form a lower air passage.
Furthermore, the valve main body comprises an upper knob and a lower bolt, an upper shunting passage is formed in the area between the upper knob and the lower bolt, and the lower bolt is provided with a through passage to form a lower shunting passage.
Furthermore, the spiral adjusting mechanism comprises a threaded rod arranged at the lower end of the upper knob and a threaded cavity arranged at the upper end of the lower bolt in a matching mode, a limiting mechanism is arranged between the lower bolt and the valve shell, and the size of the drift diameter of the upper shunt passage is adjusted when the threaded cavity and the threaded rod rotate relatively through the limiting of the limiting mechanism.
Furthermore, the lower bolt is formed by matching a left bolt sheet and a right bolt sheet; the left and right thread half areas on the upper parts of the left and right bolt pieces are matched to form a thread cavity with a limiting wall on the upper part; the threaded rod is in a shape that the upper rod part is contracted in the radial direction and the lower thread part is expanded in the radial direction, when the lower thread part and the threaded cavity rotate relatively, the limiting wall and the bottom wall of the threaded cavity form an upper limiting structure relative to the lower thread part, so that the drift diameter of the upper shunt passage correspondingly reaches the maximum and minimum amplitude.
Still further, the lower bolt be provided with a spacing piece, the valve casing is provided with a spout that can restrict spacing piece linear range of sliding from top to bottom, forms down limit structure between spout and the spacing piece.
As an effective arrangement scheme, the valve main body further comprises an upper spring and a lower spring which are arranged in a cavity of the valve main body, the lower plug pin is oppositely pressed by the upper spring and the lower spring, and the upper knob is adjusted by the spiral adjusting mechanism and limited by the limiting mechanism, so that the upper spring and the lower spring form opposite pressing with adjustable amplitude on the lower plug pin.
Furthermore, the limiting piece at the lower part of the lower plug pin and the groove at the inner side of the lower part of the valve shell are pressed by the lower spring, so that the lower spring is limited at the lower half part of the valve body cavity enclosed between the main shell and the lower shell; the upper edge of the upper part of the lower bolt and the lower edge of the upper knob adjusting part are pressed by the upper spring, so that the upper spring is limited in the upper half part of the valve main body cavity enclosed between the main shell and the upper knob.
The utility model discloses have following useful part:
1. the upper and lower shunt passages of the regulating valve are selected by shifting the regulating valve up and down, so that the inlet end is selected to form a stable upper and lower airflow passage through the valve main body and is communicated with the outlet end, and medical personnel can provide the required target constant pressure for the central negative pressure suction system through the lower airflow passage by pressing the simple operation; when the adjustment is needed, the amplitude of the upper shunt passage is adjusted by pulling up the upper knob, so that the central negative pressure suction system obtains a negative pressure adjusting function through the upper airflow passage;
2. the maximum and minimum change amplitudes of the valve body can be effectively limited by adding the limiting structure, and the amplitude of the drift diameter of the upper shunt passage can be adjusted with higher precision under the action of the rotation adjusting structure of the threaded rod and the threaded cavity relative to a common structure, so that the adjusting process of the negative pressure airflow is more accurate;
3. through the regulation of upper and lower spring part to cooperation stop gear's regulation, at last knob to the in-process that the bolt was adjusted down, can obtain good regulation damping and feel, further promoted the degree of accuracy of accommodation process.
Drawings
Fig. 1 is a schematic flow diagram of the downdraft path of the present invention;
fig. 2 is a schematic flow diagram of the upper airflow path adjusted to a minimum amplitude according to the present invention;
fig. 3 is a schematic flow diagram of the upper airflow path adjusted to the maximum amplitude.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
As shown in fig. 1 to 3, a two-way variable regulating valve for a central negative pressure suction system comprises a valve housing 10 having inlet and outlet ports (11,12), a regulating valve including a main housing 101 and a lower housing 102 which are lockable with each other, the regulating valve being disposed in a valve body chamber enclosed by the main housing 101 and the lower housing 102, the valve body being linearly movable up and down along the valve body chamber;
the valve main body comprises an upper knob 21 and a lower plug 22, the adjusting part of the upper knob 21 is positioned outside the valve shell 10, the area between the lower part of the upper knob 21 and the upper edge of the lower plug 22 forms an annular upper shunt passage 14, and the path of the upper shunt passage 14 is adjusted through a screw adjusting mechanism; the lower plug 22 has a through channel to form a lower shunt passage 15, when the upper knob 21 is pressed, the valve body is linearly lowered downwards along the cavity of the valve body, the lower part of the valve body is absorbed by the magnetic part 103 in the lower housing 102, at this time, as shown in fig. 1, the airflow forms a stable lower airflow passage from the lower inlet shunt passage 112, the lower shunt passage 15 and the lower outlet confluence passage 122 to flow, and since the lower shunt passage 15 of the valve body is a fixed passage, a highly controllable constant pressure regulating effect can be formed in cooperation with the constant pressure supply of the negative pressure of the central negative pressure suction system; when negative pressure adjustment is needed, the upper knob 21 can be selected to be pulled up, so that the valve main body is lifted and is in contact with the magnetic part 103 for adsorption, and airflow flows from an upper airflow passage formed by the upper inlet branch passage 111, the upper shunt passage 14 and the upper outlet confluence passage 121, and the size of the path of the upper branch passage 14 is adjusted through the spiral adjusting mechanism, in the embodiment, in order to facilitate the use of a specific medical apparatus, namely a portable sputum aspirator, under the condition that a central negative pressure suction system supplies 0.05MPa of negative pressure, the inlet end 11 of the adjusting valve is connected to the negative pressure of the pipe section of the portable sputum aspirator, and the outlet end 12 of the adjusting valve is connected to the central negative pressure suction system, so that the negative pressure flow limit of the lower branch passage 15 of the adjusting valve is a negative pressure constant value of 0.04 MPa; the upper shunt passage 14 adjusts the maximum and minimum amplitude change intervals of the drift diameter, the negative pressure current limiting change range corresponds to the negative pressure interval of 0.03-0.05MPa, the portable sputum aspirator can cope with the operation of daily use of medical personnel, the operation process is convenient, and in an emergency state, the knob 21 can be quickly screwed up to the maximum and minimum amplitude so as to cope with the use of adult patients and children with relatively delicate respiratory tracts under the emergency rescue condition.
Specifically, in this embodiment, the lower plug 22 is formed by pairing the left plug piece 221' and the right plug piece 221; the left and right thread half areas on the upper parts of the left and right plug pins 221 are matched to form a thread cavity 223 with a limiting wall on the upper part; the threaded rod 213 is in a shape that the upper rod part is contracted in the radial direction and the lower threaded part is expanded in the radial direction, when the lower threaded part and the threaded cavity 223 rotate relatively, the limiting wall and the bottom wall of the threaded cavity 223 form an upper limiting structure relative to the lower threaded part, so that the path of the upper shunt passage 14 correspondingly reaches the maximum and minimum amplitude; meanwhile, the lower plug 22 is provided with a limiting piece 222, the valve housing 10 is provided with a sliding groove which can limit the vertical linear sliding range of the limiting piece 222, a lower limiting structure is formed between the sliding groove and the limiting piece 222, and the threaded cavity 223 at the upper end of the lower plug 22 which are arranged at the lower end of the upper knob 21 in a matching way and the upper and lower limiting structures jointly form a spiral adjusting mechanism, so that when the upper knob 21 is rotated, as shown in fig. 2-3, the threaded cavity 223 and the threaded rod 213 can rotate relatively, the lower plug 22 can slide vertically relative to the upper knob 21, and the size of the drift diameter of the upper shunt passage 14 can be adjusted.
In the present embodiment, the inlet end 11 of the valve housing 10 is defined by an upper and a lower inlet branch flow paths 112 formed in a Y shape from the outside to the valve housing 10, an upper and a lower outlet merging flow paths 122 formed in a Y shape from the inside to the outside of the valve housing 10, and the upper and lower branch flow paths 15 of the regulating valve are selected by shifting the regulating valve up and down, so that the valve body moves linearly up and down along the cavity of the valve body, and the inlet end 11 can alternatively form a stable upper and a lower air flow paths through the valve body and is connected to the outlet end 12. In the present embodiment, the negative pressure supply section of the portable sputum aspirator is connected to the inlet end 11 of the regulating valve through a single pipe, and the central negative pressure suction system is connected to the outlet end 12 of the regulating valve through a single pipe.
As an effective arrangement, in this embodiment, the valve main body further includes an upper spring 31 and a lower spring 32, the limiting piece 222 at the lower part of the lower plug 22 and the groove of the lower housing 102 of the valve housing 10 are pressed by the lower spring 32, so that the lower spring 32 is limited to the lower half portion 132 of the valve main body cavity enclosed between the main housing 101 and the lower housing 102; the upper edge of the upper part of the lower bolt 22 and the lower edge of the adjusting part of the upper knob 21 are pressed by the upper spring 31, so that the upper spring 31 is limited to the upper half part 131 of the valve body cavity enclosed between the main shell 101 and the upper knob 21; at this time, the lower plug 22 is pressed against the upper spring 31 and the lower spring 32, and the upper knob 21 is adjusted by the screw adjusting mechanism and limited by the limiting mechanism, so that the upper spring 32 and the lower spring 32 form opposite pressing with adjustable amplitude against the lower plug 22. Through this setting, make the in-process that upper knob 21 adjusted lower bolt, can obtain good regulation damping and feel, further promoted the degree of accuracy of accommodation process.
Finally, it should be noted that the above embodiments are only used for illustrating and not limiting the technical solutions of the present invention, and although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can be modified or replaced with equivalents, and any modification or partial replacement without departing from the spirit and scope of the present invention should be covered by the claims of the present invention.
Claims (9)
1. A two-channel variable regulating valve for a central negative pressure suction system comprises a valve shell with an inlet end and an outlet end and a regulating valve, and is characterized in that a valve body cavity enclosing a valve body is arranged in the valve shell, and the valve body linearly moves along the valve body cavity; the upper and lower flow dividing passages of the regulating valve are selected by shifting the regulating valve up and down, so that the inlet end can be selected by the valve main body to form a stable upper and lower air passage which is connected with the outlet end in parallel; the upper knob outside the valve shell adjusts the drift diameter of the upper shunt passage through a screw adjusting mechanism of the valve main body; the lower shunt passage of the valve main body is a fixed path.
2. The two-way variable control valve for a central vacuum aspiration system of claim 1, wherein the valve housing comprises a main housing and a lower housing that are lockable to each other, the control valve is disposed in a valve body cavity enclosed by the main housing and the lower housing, and the valve housing is provided with a magnetic member that attracts the valve body to form stable upper and lower air flow passages.
3. The two-way variable control valve for a central negative pressure suction system according to claim 2, wherein the inlet port forms upper and lower inlet branch passages from the inside of the outside valve housing, the outlet port forms upper and lower outlet confluence passages from the inside of the outside valve housing, and the valve body linearly moves along the valve body cavity so that the upper branch passage forms an upper flow passage together with the upper inlet branch passage and the upper outlet confluence passage, and the lower branch passage forms a lower flow passage together with the lower inlet branch passage and the lower outlet confluence passage.
4. The two-way variable regulating valve for the central negative pressure suction system according to claim 1, wherein the valve body comprises an upper knob and a lower plug pin, an upper shunt passage is formed in a region between the upper knob and the lower plug pin, and the lower plug pin is provided with a through passage to form a lower shunt passage.
5. The dual-channel variable regulating valve for the central negative pressure suction system of claim 4, wherein the screw adjusting mechanism comprises a threaded rod arranged at the lower end of the upper knob and a threaded cavity arranged at the upper end of the lower plug pin in a matching manner, a limiting mechanism is arranged between the lower plug pin and the valve shell, and the size of the upper shunt channel path is adjusted when the threaded cavity and the threaded rod rotate relatively through the limitation of the limiting mechanism.
6. The two-way variable regulating valve for the central negative pressure suction system according to claim 5, wherein the lower latch is formed by matching a left latch piece and a right latch piece; the left and right thread half areas on the upper parts of the left and right bolt pieces are matched to form a thread cavity with a limiting wall on the upper part; the threaded rod is in a shape that the upper rod part is contracted in the radial direction and the lower thread part is expanded in the radial direction, when the lower thread part and the threaded cavity rotate relatively, the limiting wall and the bottom wall of the threaded cavity form an upper limiting structure relative to the lower thread part, so that the drift diameter of the upper shunt passage correspondingly reaches the maximum and minimum amplitude.
7. The dual-channel variable regulating valve for the central negative pressure suction system according to claim 5, wherein the lower plug pin is provided with a limiting plate, the valve housing is provided with a sliding groove capable of limiting the vertical linear sliding amplitude of the limiting plate, and a lower limiting structure is formed between the sliding groove and the limiting plate.
8. The two-way variable regulating valve for the central negative pressure suction system according to claim 6 or 7, wherein the valve body further comprises an upper spring and a lower spring which are arranged in the cavity of the valve body, the lower plug pin is oppositely pressed by the upper spring and the lower spring, and the upper knob is adjusted by the screw adjusting mechanism and limited by the limiting mechanism, so that the upper spring and the lower spring form opposite pressing with adjustable amplitude on the lower plug pin.
9. The two-way variable regulating valve for a central negative pressure suction system according to claim 8, wherein the limiting piece at the lower part of the lower plug pin and the groove at the inner side of the lower part of the valve housing are pressed by the lower spring, so that the lower spring is limited to the lower half part of the valve body cavity enclosed between the main housing and the lower housing; the upper edge of the upper part of the lower bolt and the lower edge of the upper knob adjusting part are pressed by the upper spring, so that the upper spring is limited in the upper half part of the valve main body cavity enclosed between the main shell and the upper knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920495828.7U CN209933605U (en) | 2019-04-12 | 2019-04-12 | Double-channel variable regulating valve for central negative pressure suction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920495828.7U CN209933605U (en) | 2019-04-12 | 2019-04-12 | Double-channel variable regulating valve for central negative pressure suction system |
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| Publication Number | Publication Date |
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| CN209933605U true CN209933605U (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920495828.7U Active CN209933605U (en) | 2019-04-12 | 2019-04-12 | Double-channel variable regulating valve for central negative pressure suction system |
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| Country | Link |
|---|---|
| CN (1) | CN209933605U (en) |
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2019
- 2019-04-12 CN CN201920495828.7U patent/CN209933605U/en active Active
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