CN215274923U

CN215274923U - Clear water tank and sewage tank switching conduction type two-way reversing valve for gastric lavage machine

Info

Publication number: CN215274923U
Application number: CN202023056703.6U
Authority: CN
Inventors: 李桂花; 唐张斌
Original assignee: Shanghai Baojia Medical Instrument Co ltd
Current assignee: Shanghai Baojia Medical Instrument Co ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-12-24
Anticipated expiration: 2030-12-17

Abstract

The utility model relates to the technical field of machinery. The clear water tank and the sewage tank switching conduction type double-way reversing valve for the gastric lavage machine comprises a valve seat and a valve rod in sliding connection with the valve seat, wherein the right end of the valve seat is detachably connected with a pneumatic driving mechanism for driving the valve rod to move left and right; the valve seat is provided with a first inlet and a first outlet which are positioned on the same side and arranged on the left and the right, the first inlet is used for connecting a liquid discharge port of the clean water tank, and the first outlet is used for connecting a liquid discharge pipe; the valve seat is provided with a common port communicated with the bottom of the sewage tank, a second outlet and a second inlet which are positioned on the same side and arranged on the left and the right; a first flow guide channel used for communicating the first inlet with the first outlet and a second flow guide channel used for switching the common port to communicate the second inlet with the second outlet are formed in the valve rod. This patent has realized the switching linkage of the water conservancy diversion action of clear water jar and sewage jar, has practiced thrift occupation space.

Description

Clear water tank and sewage tank switching conduction type two-way reversing valve for gastric lavage machine

Technical Field

The utility model relates to the technical field of machinery, specifically be the switching valve of clear water jar and sewage jar of gastric lavage machine.

Background

The gastric lavage is a necessary first-aid technique for acute poisoning through the digestive tract, can effectively remove toxic substances in the stomach through gastric lavage, prevents the toxic substances from being continuously absorbed, and is one of the most important detoxification techniques for acute poisoning. At present, gastric lavage is generally carried out by using a gastric lavage machine in emergency departments of large and small hospitals all over the country.

Chinese patent publication No. 201379827Y discloses a full-automatic gastric lavage machine. In this patent, increase on the fluid-discharge tube of clean water jar and have a diaphragm valve, the sewage jar passes through the sewage valve switching-over and connects the blow off pipe respectively and goes out the stomach tube, and clean water jar and sewage jar are through the valve of two differences control break-make respectively, and is comparatively loaded down with trivial details, and occupation space is big.

SUMMERY OF THE UTILITY MODEL

To the problem that prior art exists, the utility model provides a clear water jar and sewage jar switch on-off formula two-way reversing valve for gastric lavage machine to at least one technical problem more than solving.

In order to achieve the purpose, the utility model provides a switching conduction type two-way reversing valve of a clean water tank and a sewage tank for a gastric lavage machine, which comprises a valve seat and a valve rod connected with the valve seat in a sliding way, and is characterized in that the right end of the valve seat is detachably connected with a pneumatic driving mechanism used for driving the valve rod to move left and right;

the valve seat is provided with a first inlet and a first outlet which are positioned on the same side and arranged on the left and the right, the first inlet is used for being connected with a liquid outlet of the clean water tank, and the first outlet is used for being connected with a liquid discharge pipe;

a sewage tank is arranged above the valve seat, the bottom of the sewage tank is detachably connected with the valve seat through a screw, and a common port communicated with the bottom of the sewage tank, a second outlet and a second inlet which are positioned on the same side and are arranged on the left and the right are formed in the valve seat;

the valve rod is provided with a first flow guide channel for communicating a first inlet with a first outlet and a second flow guide channel for switching and communicating a common port with a second inlet and a second outlet;

when the valve rod is positioned at the right limit position, the first inlet is not communicated with the first outlet, and the common port is communicated with the second inlet through the second flow guide channel;

when the valve rod is at the left limit position, the first inlet is communicated with the first outlet through the first flow guide channel, and the common port is communicated with the second outlet through the second flow guide channel.

This patent has realized the switching linkage of the water conservancy diversion action of clear water jar and sewage jar, for 2 independent valves of tradition, has practiced thrift occupation space.

Preferably, the sewage tanks each include a cylinder body, the cylinder body includes an upper cylinder body and a lower cylinder body which are arranged up and down, a leather cup is clamped between the upper cylinder body and the lower cylinder body, the leather cup divides an inner cavity of the cylinder body into an air storage cavity and a liquid storage cavity which are arranged up and down, and the upper cylinder body is provided with a first connector for introducing positive pressure or negative pressure;

the lower cylinder body is detachably connected with the valve seat through a screw;

a flow guide hole is formed in the lower cylinder body and is in butt joint conduction with the public port;

the flow guide holes and the flow guide direction of the public port are vertically arranged;

the second flow guide channel comprises a vertical flow guide section and a transverse flow guide section, wherein the vertical flow guide section and the transverse flow guide section are communicated with each other.

The sewage tank is convenient to be communicated with the valve seat.

Further preferably, a support screw is mounted on the lower cylinder body adjacent to the side of the flow guide hole, and the head of the support screw is located inside the lower cylinder body.

The leather cup is prevented from being adsorbed to block the diversion hole.

Further preferably, the flow guiding direction of the first flow guiding channel is U-shaped or C-shaped.

And the conduction or non-conduction switching of the first inlet and the second inlet which are positioned at the same side is realized.

Preferably, the pneumatic driving mechanism comprises a pneumatic valve body and a sealing element, the sealing element is arranged at the right end part of the valve rod, and the sealing element divides an inner cavity of the pneumatic valve body into a left air cavity and a right air cavity which are arranged on the left and right;

the left end of the left air cavity is provided with an exhaust hole;

and a second joint for inflating or exhausting the right air cavity is arranged on the valve body.

The inflation through the second joint is convenient for, realizes the increase of right air cavity volume, realizes moving left of valve rod. Through the air exhaust of the second connector, the volume of the right air cavity is reduced, and the valve rod is moved to the right.

Preferably, the pneumatic valve body comprises a valve cylinder cover and a valve cylinder body, the valve cylinder body is positioned at the right end of the valve seat, and the valve cylinder cover is positioned at the right end of the valve cylinder body;

the valve cylinder body and the valve cylinder cover are fixed on the valve seat through screws.

The pneumatic valve body is convenient to disassemble.

It is further preferred that the seal includes a reversing cup centrally secured to the periphery of the valve stem and peripherally secured between the valve cylinder head and the valve cylinder block.

The sealing effect is convenient to ensure, and the volume of the air cavity is convenient to adjust.

Further preferably, the valve rod comprises a sliding part, a first cylindrical part and a second cylindrical part, wherein the outer diameters of the sliding part, the first cylindrical part and the second cylindrical part are gradually decreased from left to right;

the sliding part is connected with the valve seat in a sliding manner;

the first cylindrical part is sleeved with a first pressing sheet, and a 0-shaped sealing ring is clamped between the first pressing sheet and the sliding part;

the second cylindrical part is sleeved with a second pressing sheet, and the reversing leather cup is clamped between the first pressing sheet and the second pressing sheet;

and the end part of the second cylindrical part is in threaded connection with a nut which is propped against the second pressing sheet.

The fixing between the center of the reversing cup and the valve rod is convenient to realize.

Preferably, the valve cylinder cover is provided with an annular extension part which extends leftwards and is inserted into the valve cylinder body, and the outer edge of the reversing leather cup is partially positioned in a gap between the annular extension part and the valve cylinder body.

The movement limiting of the outer edge of the reversing cup is facilitated.

Preferably, an inner concave part for embedding the nut is formed in the center of the valve cylinder cover, and the inner concave part is a limiting part for enabling the valve rod to move to the right limit position;

the left end part of the valve seat is detachably connected with a cover plate, and the cover plate is used as a limiting part for the valve rod to move to a left limit position.

Limiting of the movement of the valve rod is convenient to realize.

Preferably, the valve seat is provided with a through hole for passing through the valve rod, a shaft sleeve is connected in the through hole in an interference fit manner, and the shaft sleeve is provided with a through hole communicated with the common port;

at least three axially-arranged annular grooves are formed in the sliding connection position of the valve rod and the valve seat, and an inner sealing ring and an outer sealing ring which are arranged inside and outside are embedded in the annular grooves;

the periphery of the valve rod is sequentially sleeved with a shaft sleeve and the valve seat from inside to outside.

The sealing performance is convenient to guarantee.

Preferably, the upper cylinder body and the lower cylinder body pass through the same bolt, and the bolt is fixed on the valve seat.

The leather cup is conveniently clamped between the upper cylinder body and the lower cylinder body.

Drawings

Fig. 1 is a sectional view of a valve rod of the embodiment 1 of the invention at a left limit position;

fig. 2 is a sectional view of the valve rod in the front view of the left limit position in the embodiment 1 of the present invention;

fig. 3 is a left side view of embodiment 1 of the present invention;

fig. 4 is a right side view of embodiment 1 of the present invention;

fig. 5 is a sectional view of the valve rod in the front view of the right limit position according to the embodiment 1 of the present invention;

fig. 6 is a view from B to B of fig. 5 according to embodiment 1 of the present invention.

In the figure: 1. a valve seat; 2. m4 × 12 screws; 3. a cover plate; 4. a valve stem; 5. an inner side seal ring; 6. an outer seal ring; 7. a shaft sleeve; 8. countersunk head screws; 9. a support screw; 10. a first joint; 11. a bolt; 12. an upper cylinder body; 13. a leather cup; 14. a lower cylinder body; 15. a reversing leather cup; 16. a first pressing sheet; 17. an O-shaped sealing ring; 18. a valve cylinder cover; 19. a nut; 20. a second compression piece; 21. m4 × 50 screws; 22. a valve cylinder body; 23. a second joint; 24. a third joint; 25. a fourth joint; 26. a fifth joint; 27. and a sixth joint.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 to 6, embodiment 1: the clear water tank and the sewage tank switching conduction type double-way reversing valve for the gastric lavage machine comprises a valve seat 1 and a valve rod 4 which is in sliding connection with the valve seat 1, wherein the right end of the valve seat 1 is detachably connected with a pneumatic driving mechanism which is used for driving the valve rod 4 to move left and right; the valve seat 1 is provided with a first inlet and a first outlet which are positioned on the same side and arranged on the left and the right, the first inlet is used for connecting a liquid discharge port of the clean water tank, and the first outlet is used for connecting a liquid discharge pipe; a sewage tank is arranged above the valve seat 1, the bottom of the sewage tank is detachably connected with the valve seat through a screw, and the valve seat 1 is provided with a common port communicated with the bottom of the sewage tank, a second outlet and a second inlet which are positioned on the same side and arranged on the left and the right; the valve rod 4 is provided with a first flow guide channel for communicating the first inlet with the first outlet and a second flow guide channel for switching and communicating the common port with the second inlet and the second outlet; when the valve rod 4 is at the right limit position, the first inlet is not communicated with the first outlet, and the common port is communicated with the second inlet through the second flow guide channel; when the valve rod 4 is at the left limit position, the first inlet is communicated with the first outlet through the first flow guide channel, and the common port is communicated with the second outlet through the second flow guide channel. The second inlet is connected to a third connection 24 and the second outlet is connected to a fourth connection 25. The first inlet and the first outlet are detachably connected with a fifth joint 26 and a sixth joint 27.

The sewage tank comprises a tank body, the tank body comprises an upper tank body 12 and a lower tank body 14 which are arranged up and down, a leather cup 13 is clamped between the upper tank body 12 and the lower tank body 14, the leather cup 13 enables an inner cavity of the tank body to be an air storage cavity and an liquid storage cavity which are arranged up and down respectively, and a first connector 10 for leading in positive pressure or negative pressure is arranged on the upper tank body 12; the lower cylinder body 14 is detachably connected with the valve seat 1 through a countersunk head screw 8; the lower cylinder body 14 is provided with a flow guide hole, and the flow guide hole is in butt joint conduction with the public port; the flow guide holes and the flow guide direction of the public port are vertically arranged; the second flow guide channel comprises a vertical flow guide section and a transverse flow guide section which are communicated with each other and used for vertical flow guide. The sewage tank is convenient to be communicated with the valve seat 1. The width of the top of the vertical flow guide section is matched with the distance between the second inlet and the second outlet. The vertical flow guide section is provided with a cross section which is gradually increased from top to bottom, and a longitudinal section is gradually decreased from left to right. The lower cylinder 14 is provided with a support screw 9 adjacent to the diversion hole, and the head of the support screw 9 is positioned inside the lower cylinder 14. The leather cup 13 is prevented from being adsorbed to block the diversion hole.

The flow guide direction of the first flow guide channel is U-shaped or C-shaped. And the conduction or non-conduction switching of the first inlet and the second inlet which are positioned at the same side is realized.

The pneumatic driving mechanism comprises a pneumatic valve body and a sealing element, the sealing element is arranged at the right end part of the valve rod 4, and the sealing element divides an inner cavity of the pneumatic valve body into a left air cavity and a right air cavity which are arranged on the left and the right; the left end of the left air cavity is provided with an exhaust hole; a second connector 23 for inflation or deflation of the right air chamber is mounted on the pneumatic valve body. The inflation through the second joint 23 is convenient, the increase of the volume of the right air cavity is realized, and the left movement of the valve rod 4 is realized. Through the air exhaust of the second connector 23, the volume of the right air cavity is reduced, and the valve rod 4 is moved to the right. The valve body comprises a valve cylinder cover 18 and a valve cylinder body 22, the valve cylinder body 22 is positioned at the right end of the valve seat 1, and the valve cylinder cover 18 is positioned at the right end of the valve cylinder body 22; the valve cylinder block 22 and the valve cylinder head 18 are fixed to the valve seat 1 by M4 × 50 screws 21. The pneumatic valve body is convenient to disassemble. The seal includes a reversing cup 15 centrally secured to the periphery of the valve stem 4 and peripherally secured between the cylinder head 18 and the cylinder block 22. The sealing effect is convenient to ensure, and the volume of the air cavity is convenient to adjust.

The valve rod 4 comprises a sliding part, a first cylindrical part and a second cylindrical part, wherein the outer diameters of the sliding part, the first cylindrical part and the second cylindrical part are gradually decreased from left to right; the sliding part is connected with the valve seat 1 in a sliding way; the first cylindrical part is sleeved with a first pressing sheet 16, and a 0-shaped sealing ring 17 is clamped between the first pressing sheet 16 and the sliding part; the second cylinder portion cover is equipped with second compressing tightly piece 20, and presss from both sides between first compressing tightly piece 16 and the second compressing tightly piece 20 and is equipped with switching-over leather cup 15. The adjacent sides of the first pressing piece 16 and the second pressing piece 20 are provided with annular grooves and annular protrusions which are matched with each other. The end of the second cylindrical portion is threaded with a nut 19 which abuts against a second compression tab 20. The fixation between the center of the reversing cup 15 and the valve rod 4 is convenient to realize.

The valve cylinder cover 18 is provided with an annular extension extending leftward and inserted into the valve cylinder body 22, and the outer edge of the direction change cup 15 is partially located in the gap between the annular extension and the valve cylinder body 22. The movement limit of the outer edge of the reversing cup 15 is facilitated.

The center of the valve cylinder cover 18 is provided with an inner concave part for embedding the nut 19, and the inner concave part is a limiting part for moving the valve rod 4 to the right limit position; the left end of the valve seat 1 is detachably connected with a cover plate 3 through an M4 × 12 screw 2, and the cover plate 3 is used as a limit stop for the valve rod 4 to move to the left limit position. Limiting of the movement of the valve rod 4 is facilitated.

The valve seat 1 is provided with a through hole for penetrating the valve rod 4, the through hole is connected with a shaft sleeve 7 in an interference fit manner, and the shaft sleeve 7 is provided with a through hole communicated with the public port. The shaft sleeve is provided with a through hole communicated with the first inlet, a through hole communicated with the first outlet, a through hole communicated with the second inlet and a through hole communicated with the second outlet. At least three axially-arranged annular grooves are formed in the sliding connection position of the valve rod 4 and the valve seat 1, and an inner sealing ring 5 and an outer sealing ring 6 which are arranged inside and outside are embedded in the annular grooves; the periphery of the valve rod 4 is sleeved with a shaft sleeve 7 and a valve seat 1 in sequence from inside to outside. The sealing performance is convenient to guarantee.

The upper cylinder 12 and the lower cylinder 14 pass through the same bolt 11, and the bolt 11 is fixed on the valve seat 1. So as to clamp the leather cup 13 between the upper cylinder body 12 and the lower cylinder body 14.

The working principle is as follows:

air paths are formed between the upper cylinder body 12 and the leather cup 13 and between the valve cylinder cover 18 and the reversing leather cup 15, a liquid storage container is formed between the lower cylinder body 14 and the leather cup 13, and positive pressure or negative pressure is provided at the first joint 10 and the second joint 23.

When negative pressure is provided at the second connector 23, the volume between the cylinder cover 18 and the direction changing cup 15 is reduced, thereby pulling the valve rod 4 to move to the right limit position. See fig. 5 and 6. Subsequently, by providing a negative pressure at the first joint 10, the volume between the upper cylinder 12 and the cup 13 decreases, whereas the volume between the lower cylinder 14 and the cup 13 increases, so that the gastric juice is sucked between the lower cylinder 14 and the cup 13 through the third joint 24; at the same time, the fifth joint 26 and the sixth joint 27 are in the blocked state by the valve rod 4.

When positive pressure is provided at the second connector 23, the volume between the cylinder head 18 and the direction changing cup 15 increases, thereby pushing the valve rod 4 to move to the left limit position. See fig. 1 and 2. Subsequently, by providing a positive pressure at the first joint 10, the volume between the upper cylinder 12 and the cup 13 increases, whereas the volume between the lower cylinder 14 and the cup 13 decreases, so as to expel the gastric juice between the lower cylinder 14 and the cup 13 through the fourth joint 25; at the same time, the fifth joint 26 and the sixth joint 27 are in a conducting state due to the valve rod 4, and the water in the clean water tank is led out for flushing. See fig. 1 and 2.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The switching conduction type double-way reversing valve for the clean water tank and the sewage tank of the gastric lavage machine comprises a valve seat and a valve rod which is in sliding connection with the valve seat, and is characterized in that the right end of the valve seat is detachably connected with a pneumatic driving mechanism which is used for driving the valve rod to move left and right;

2. The switching conduction type two-way directional valve for the clean water tank and the sewage tank of the gastric lavage device as claimed in claim 1, characterized in that: the sewage tank comprises a tank body, the tank body comprises an upper tank body and a lower tank body which are arranged up and down, a leather cup is clamped between the upper tank body and the lower tank body, the leather cup enables an inner cavity of the tank body to be a gas storage cavity and a liquid storage cavity which are arranged up and down respectively, and a first connector used for leading in positive pressure or negative pressure is arranged on the upper tank body;

3. The switching conduction type two-way directional valve for the clean water tank and the sewage tank of the gastric lavage device of claim 2, characterized in that: and a supporting screw is arranged on the lower cylinder body adjacent to the side of the flow guide hole, and the head of the supporting screw is positioned in the lower cylinder body.

4. The switching conduction type two-way directional valve for the clean water tank and the sewage tank of the gastric lavage device as claimed in claim 1, characterized in that: the flow guide direction of the first flow guide channel is U-shaped or C-shaped.

5. The switching conduction type two-way directional valve for the clean water tank and the sewage tank of the gastric lavage device as claimed in claim 1, characterized in that: the pneumatic driving mechanism comprises a pneumatic valve body and a sealing element, the sealing element is arranged at the right end part of the valve rod, and the sealing element divides an inner cavity of the pneumatic valve body into a left air cavity and a right air cavity which are arranged left and right;

the left end of the left air cavity is provided with an exhaust hole;

6. The switching conduction type two-way directional valve for the clean water tank and the sewage tank of the gastric lavage device as claimed in claim 5, characterized in that: the pneumatic valve body comprises a valve cylinder cover and a valve cylinder body, the valve cylinder body is positioned at the right end of the valve seat, and the valve cylinder cover is positioned at the right end of the valve cylinder body;

7. The switching conduction type two-way directional valve for the clean water tank and the sewage tank of the gastric lavage device as claimed in claim 6, characterized in that: the sealing element comprises a reversing leather cup, the center of the reversing leather cup is fixed on the periphery of the valve rod, and the edge of the reversing leather cup is fixed between the valve cylinder cover and the valve cylinder body.

8. The switching conduction type two-way directional valve for the clean water tank and the sewage tank of the gastric lavage device as claimed in claim 6, characterized in that: the valve rod comprises a sliding part, a first cylindrical part and a second cylindrical part, wherein the outer diameters of the sliding part, the first cylindrical part and the second cylindrical part are gradually decreased from left to right;

the sliding part is connected with the valve seat in a sliding manner;

9. The switching conduction type two-way directional valve for the clean water tank and the sewage tank of the gastric lavage device of claim 8, characterized in that: an inner concave part used for embedding the nut is formed in the center of the valve cylinder cover, and the inner concave part is a limiting part for enabling the valve rod to move to the right limit position;

10. The switching conduction type two-way directional valve for the clean water tank and the sewage tank of the gastric lavage device as claimed in claim 1, characterized in that: the valve seat is provided with a through hole for penetrating the valve rod, a shaft sleeve is connected in the through hole in an interference fit manner, and the shaft sleeve is provided with a through hole communicated with the public port;