Valve control structure for sterilization cabinet

Abstract

The utility model discloses a valve control structure for a sterilization cabinet, which relates to the technical field of dosing of the sterilization cabinet, solves the problems that the dosage is inconvenient to quantitatively add and the waste of ethylene oxide is easily caused, and comprises a valve body arranged on a dosing pipeline, the two sides of the valve body are respectively provided with a medicine inlet pipe and a medicine outlet pipe; a first pneumatic ball valve is installed on the medicine inlet pipe, a second pneumatic ball valve is installed on the medicine outlet pipe, an air cylinder is fixedly installed on the top of the valve body, the piston end of the air cylinder extends into the valve body and is fixedly connected with a valve element, and a limiting plate is arranged in the valve body and located above the valve element. A first touch switch is installed on the bottom face of the limiting plate in an embedded mode, a limiting block is arranged at the position, below the valve element, in the valve body, and a second touch switch is installed on the top face of the limiting block in an embedded mode. The device is convenient for realizing quantitative and stable addition of medicine, and waste of ethylene oxide is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sterilizing cabinet dosing, in particular to a valve control structure for a sterilizing cabinet. Background Art

[0002] Ethylene oxide sterilization equipment is a key equipment for manufacturers of disposable sterile medical devices. It has special requirements for installation, operation, and use management. Ethylene oxide is used as a sterilizer. Ethylene oxide is a broad-spectrum sterilant that can kill various microorganisms at room temperature, including spores, Mycobacterium tuberculosis, bacteria, viruses, fungi, etc.

[0003] Existing ethylene oxide sterilizers are mainly used for sterilizing disposable underwear, socks, towels, etc. When the sterilizer is working, the ethylene oxide in the ethylene oxide cylinder needs to be added into the sterilizer through the dosing pipeline.

[0004] In the process of realizing the present utility model, the inventors found that there are at least the following problems in this technology: most of the existing ethylene oxide dosing pipelines are controlled by ordinary valves, the dosing amount is unstable, the amount of medicine is inconvenient to add quantitatively, and it is easy to cause waste of ethylene oxide. Therefore, a valve control structure for a sterilization cabinet is now proposed. Utility Model Content

[0005] In order to improve the problem that it is inconvenient to add a quantitative amount of medicine, which easily causes waste of ethylene oxide, the utility model provides a valve control structure for a sterilization cabinet.

[0006] The utility model provides a valve control structure for a sterilization cabinet, which adopts the following technical solutions:

[0007] A valve control structure for a sterilizing cabinet comprises a valve body installed on a drug dosing pipeline, a drug inlet pipe and a drug outlet pipe being respectively provided on both sides of the valve body, a first pneumatic ball valve being installed on the drug inlet pipe, and a second pneumatic ball valve being installed on the drug outlet pipe, a cylinder being fixedly installed on the top of the valve body, a piston end of the cylinder extending into the valve body and fixedly connected to a valve core, a limit plate being provided above the valve core within the valve body, a first touch switch being embedded and installed on the bottom surface of the limit plate, a limit block being provided below the valve core within the valve body, a second touch switch being embedded and installed on the top surface of the limit block;

[0008] A screw sleeve is rotatably installed on the top of the valve body, and the internal thread of the screw sleeve is connected to the first screw. The lower end of the first screw extends into the valve body and is fixedly connected to the limit plate. A first driving member is installed on the screw sleeve, and a second screw is rotatably installed on the inner bottom wall of the valve body. The upper end of the second screw extends into the limit block and is threadedly connected to the limit block, and the lower end of the second screw is installed with a second driving member.

[0009] By adopting the above technical solution, through the setting of the medicine inlet pipe, the medicine outlet pipe, the first pneumatic ball valve, the second pneumatic ball valve, the cylinder, the valve core, the limit plate, the first touch switch, the limit block and the second touch switch, in the initial state, the first pneumatic ball valve is in the open state and the second pneumatic ball valve is in the closed state. When controlling the dosing, the cylinder can be started to contract, so that the piston rod of the cylinder drives the valve core to rise, and ethylene oxide enters the valve body through the medicine inlet pipe. When the valve core rises and touches the first touch switch, the first pneumatic ball valve is quickly closed, the second pneumatic ball valve is quickly opened, the cylinder begins to extend, and the piston rod of the cylinder The valve core is driven to descend, and the ethylene oxide in the valve body is discharged through the medicine outlet pipe and then enters the sterilization cabinet through the medicine dosing pipeline. When the valve core descends and touches the second touch switch, the second pneumatic ball valve is quickly closed, and the first pneumatic ball valve is quickly opened, and the cylinder begins to contract, driving the valve core to rise again, thereby realizing the quantitative and stable addition of medicine. Through the setting of the screw sleeve, the first screw and the first driving member, the first driving member can be started to drive the screw sleeve to rotate, so that the screw sleeve drives the first screw to move vertically, and the first screw drives the limit plate to rise and fall, so that the position of the first touch switch can be adjusted, which is convenient for adjusting the amount of medicine added each time.

[0010] Optionally, sealing gaskets are fixedly connected around the valve core.

[0011] By adopting the above technical solution and providing a sealing gasket, the sealing performance of the valve core can be improved.

[0012] Optionally, a clearance hole is opened in the middle of the limit plate, and the piston rod of the cylinder passes through the clearance hole.

[0013] By adopting the above technical solution, it is possible to avoid contact between the piston rod of the cylinder and the limit plate.

[0014] Optionally, a cover is provided on the top of the valve body, and the cylinder and the first driving member are provided inside the first driving member.

[0015] By adopting the above technical solution, the cylinder and the first driving member can be protected by the cover.

[0016] Optionally, the first driving member includes a first motor, a first bevel gear and a second bevel gear, the first motor is fixedly mounted on the top of the valve body, the first bevel gear is fixedly mounted on the output end of the first motor, and the second bevel gear is fixedly sleeved on the nut and meshes with the first bevel gear.

[0017] By adopting the above technical solution, the first motor can be started to drive the first bevel gear to rotate, so that the first bevel gear drives the second bevel gear to rotate, and the second bevel gear drives the screw sleeve to rotate.

[0018] Optionally, a first limiting rod is slidably mounted on a side of the top of the valve body away from the first screw rod, and the lower end of the first limiting rod is fixedly connected to the limiting plate.

[0019] By adopting the above technical solution, the limiting plate can be limited.

[0020] Optionally, the second driving member includes a second motor, a main gear and a slave gear, the second motor is fixedly mounted on the bottom of the valve body, the main gear is fixedly mounted on the output end of the second motor, and the slave gear is fixedly mounted on the lower end of the second screw and meshes with the main gear.

[0021] By adopting the above technical solution, the second motor can be started to drive the main gear to rotate, so that the main gear drives the slave gear to rotate, and the slave gear drives the second screw to rotate.

[0022] Optionally, second limiting rods are fixedly mounted on both sides of the bottom wall of the valve body, and the second limiting rods slide and extend into the limiting blocks.

[0023] By adopting the above technical solution, the limiting block can be limited.

[0024] In summary, the present invention has the following beneficial effects:

[0025] When the valve core is lowered and touches the second touch switch, the second pneumatic ball valve is quickly closed, the first pneumatic ball valve is quickly opened, the cylinder starts to contract, and the valve core is again driven to rise, so that the ethylene oxide enters the valve body through the medicine inlet pipe.

[0026] 2. The utility model is configured with the screw sleeve, the first screw and the first driving member, so that the first driving member can be started to drive the screw sleeve to rotate, so that the screw sleeve drives the first screw to move vertically, and the first screw drives the limit plate to move up and down, thereby being able to adjust the position of the first touch switch, making it easy to adjust the amount of medicine added each time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0028] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0029] Figure 3 This utility model Figure 2 A magnified view of the structure in the middle.

[0030] Figure 4 This utility model Figure 2 Enlarged view of the structure at point B in the middle.

[0031] Description of reference numerals:

[0032] 1. Dosing pipeline; 2. Valve body; 21. Drug inlet pipe; 22. Drug outlet pipe; 23. First pneumatic ball valve; 24. Second pneumatic ball valve; 25. Cylinder; 26. Valve core; 261. Sealing gasket; 27. Limit plate; 271. Clearance hole; 28. First touch switch; 29. ​​Limit block; 210. Second touch switch; 211. Sleeve; 212. First screw; 213. First driving member; 2131. First motor; 2132. First bevel gear; 2133. Second bevel gear; 214. Second screw; 215. Second driving member; 2151. Second motor; 2152. Main gear; 2153. Slave gear; 216. Cover; 217. First limiting rod; 218. Second limiting rod. DETAILED DESCRIPTION

[0033] The following is in conjunction with the appended drawings in the embodiment of the present utility model. Figure 1-4 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0034] Please refer to Figure 1-2A valve control structure for a sterilization cabinet includes a valve body 2 installed on a dosing pipeline 1, with a drug inlet pipe 21 and a drug outlet pipe 22 respectively provided on both sides of the valve body 2, a first pneumatic ball valve 23 installed on the drug inlet pipe 21, and a second pneumatic ball valve 24 installed on the drug outlet pipe 22. A cylinder 25 is fixedly installed on the top of the valve body 2, and the piston end of the cylinder 25 extends into the valve body 2 and is fixedly connected to a valve core 26. The valve core 26 is fixedly connected with a sealing gasket 261 on all sides. The setting of the sealing gasket 261 can improve the sealing performance of the valve core 26. A limit plate 27 is provided above the valve core 26 inside the valve body 2, and a first touch switch 28 is embedded in the bottom surface of the limit plate 27. When the first touch switch 28 is touched, the first pneumatic ball valve 23 will be triggered to close, the second pneumatic ball valve 24 will be opened, and the cylinder 25 will start to extend. A limit block 29 is provided inside the valve body 2 below the valve core 26. A second touch switch 210 is embedded in the top surface of the limit block 29. When the second touch switch 210 is touched, the first pneumatic ball valve 23 is triggered to open, the second pneumatic ball valve 24 is closed, and the cylinder 25 begins to contract. Through the arrangement of the drug inlet pipe 21, the drug outlet pipe 22, the first pneumatic ball valve 23, the second pneumatic ball valve 24, the cylinder 25, the valve core 26, the limit plate 27, the first touch switch 28, the limit block 29 and the second touch switch 210, in the initial state, the first pneumatic ball valve 23 is open and the second pneumatic ball valve 24 is closed. When controlling the dosing, the cylinder 25 can be activated to contract, so that the piston rod of the cylinder 25 drives the valve core 26 to rise. Ethylene oxide enters the valve body 2 through the drug inlet pipe 21. When the valve core 26 rises and touches When the first touch switch 28 is reached, the first pneumatic ball valve 23 is quickly closed, the second pneumatic ball valve 24 is quickly opened, the cylinder 25 begins to extend, and the piston rod of the cylinder 25 drives the valve core 26 to descend. The ethylene oxide in the valve body 2 is discharged through the drug outlet pipe 22 and then enters the sterilizer through the dosing pipeline 1. When the valve core 26 descends and touches the second touch switch 210, the second pneumatic ball valve 24 is quickly closed, the first pneumatic ball valve 23 is quickly opened, and the cylinder 25 begins to contract, driving the valve core 26 to rise again, thereby realizing the quantitative and stable addition of the drug.

[0035] A clearance hole 271 is provided in the middle of the limit plate 27 , and the piston rod of the cylinder 25 passes through the clearance hole 271 . The setting of the clearance hole 271 can prevent the piston rod of the cylinder 25 from contacting the limit plate 27 .

[0036] Reference Figure 2 and Figure 3, the top of the valve body 2 is rotatably installed with a screw sleeve 211, the internal thread of the screw sleeve 211 is connected to the first screw 212, the lower end of the first screw 212 extends into the valve body 2 and is fixedly connected to the limit plate 27, and a first driving member 213 is installed on the screw sleeve 211. The first driving member 213 includes a first motor 2131, a first bevel gear 2132 and a second bevel gear 2133. The first motor 2131 is fixedly installed on the top of the valve body 2, the first bevel gear 2132 is fixedly installed on the output end of the first motor 2131, and the second bevel gear 2133 is fixedly sleeved on the screw sleeve 21 1 and meshes with the first bevel gear 2132. A first limiting rod 217 is slidably installed on the side of the top of the valve body 2 away from the first screw 212. The lower end of the first limiting rod 217 is fixedly connected to the limiting plate 27. Through the arrangement of the screw sleeve 211, the first screw 212 and the first driving member 213, the first driving member 213 can be started to drive the screw sleeve 211 to rotate, so that the screw sleeve 211 drives the first screw 212 to move vertically, and the first screw 212 drives the limiting plate 27 to move up and down, so that the position of the first touch switch 28 can be adjusted, which is convenient for adjusting the dosage each time.

[0037] A cover 216 is provided on the top of the valve body 2 , and the cylinder 25 and the first driving member 213 are provided inside the first driving member 213 . The cover 216 can protect the cylinder 25 and the first driving member 213 .

[0038] Reference Figure 2 and Figure 4 , the inner bottom wall of the valve body 2 is rotatably installed with a second screw 214, the upper end of the second screw 214 extends into the limit block 29 and is threadedly connected to the limit block 29, and the lower end of the second screw 214 is installed with a second driving member 215, the second driving member 215 includes a second motor 2151, a main gear 2152 and a slave gear 2153, the second motor 2151 is fixedly installed at the bottom of the valve body 2, the main gear 2152 is fixedly installed at the output end of the second motor 2151, and the slave gear 2153 is fixedly installed Installed at the lower end of the second screw 214 and meshing with the main gear 2152, second limit rods 218 are fixedly installed on both sides of the inner bottom wall of the valve body 2, and the second limit rods 218 slide and extend into the limit block 29. Through the setting of the second screw 214 and the second driving member 215, the second driving member 215 can be started to drive the second screw 214 to rotate, so that the second screw 214 drives the limit block 29 to rise and fall, thereby adjusting the position of the second touch switch 210, which is convenient for adjusting the amount of medicine added each time.

[0039] The implementation principle of the present utility model is as follows: in the initial state, the first pneumatic ball valve 23 is in the open state, and the second pneumatic ball valve 24 is in the closed state. When controlling the dosing, the cylinder 25 can be started to contract, so that the piston rod of the cylinder 25 drives the valve core 26 to rise, and ethylene oxide enters the valve body 2 through the drug inlet pipe 21. When the valve core 26 rises and touches the first touch switch 28, the first pneumatic ball valve 23 is quickly closed, and the second pneumatic ball valve 24 is quickly opened, the cylinder 25 begins to extend, and the piston rod of the cylinder 25 drives the valve core 26 to descend. The ethylene oxide in the valve body 2 is discharged through the drug outlet pipe 22 and then enters the sterilizer through the dosing pipeline 1. When the valve core 26 descends and touches the second touch switch When the switch 210 is turned, the second pneumatic ball valve 24 is quickly closed, the first pneumatic ball valve 23 is quickly opened, and the cylinder 25 begins to contract, driving the valve core 26 to rise again, thereby realizing the quantitative and stable addition of medicine; the first driving member 213 can be started to drive the screw sleeve 211 to rotate, so that the screw sleeve 211 drives the first screw rod 212 to move vertically, and the first screw rod 212 drives the limit plate 27 to rise and fall, so that the position of the first touch switch 28 can be adjusted, and the second driving member 215 can be started to drive the second screw rod 214 to rotate, so that the second screw rod 214 drives the limit block 29 to rise and fall, so that the position of the second touch switch 210 can be adjusted, so as to facilitate the adjustment of the amount of medicine added each time.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A valve control structure for a sterilizing cabinet, comprising a valve body (2) mounted on a dosing pipeline (1), characterized in that: A drug inlet pipe (21) and a drug outlet pipe (22) are respectively provided on both sides of the valve body (2), a first pneumatic ball valve (23) is installed on the drug inlet pipe (21), and a second pneumatic ball valve (24) is installed on the drug outlet pipe (22). A cylinder (25) is fixedly installed on the top of the valve body (2), and the piston end of the cylinder (25) extends into the valve body (2) and is fixedly connected to the valve core (26). A limit plate (27) is provided above the valve core (26) inside the valve body (2), and a first touch switch (28) is embedded in the bottom surface of the limit plate (27). A limit block (29) is provided below the valve core (26) inside the valve body (2), and a second touch switch (210) is embedded in the top surface of the limit block (29); A screw sleeve (211) is rotatably mounted on the top of the valve body (2), and the internal thread of the screw sleeve (211) is connected to a first screw rod (212), the lower end of the first screw rod (212) extends into the valve body (2) and is fixedly connected to the limit plate (27), and a first driving member (213) is mounted on the screw sleeve (211), and a second screw rod (214) is rotatably mounted on the inner bottom wall of the valve body (2), the upper end of the second screw rod (214) extends into the limit block (29) and is threadedly connected to the limit block (29), and the lower end of the second screw rod (214) is mounted with a second driving member (215).

2. A valve control structure for a sterilizing cabinet according to claim 1, characterized in that: Sealing pads (261) are fixedly connected to the four sides of the valve core (26).

3. The valve control structure for a sterilizing cabinet according to claim 1, characterized in that: A clearance hole (271) is provided in the middle of the limiting plate (27), and the piston rod of the cylinder (25) passes through the clearance hole (271).

4. The valve control structure for a sterilizing cabinet according to claim 1, characterized in that: A cover (216) is provided on the top of the valve body (2), and the cylinder (25) and the first driving member (213) are provided inside the first driving member (213).

5. The valve control structure for a sterilizing cabinet according to claim 1, characterized in that: The first driving member (213) comprises a first motor (2131), a first bevel gear (2132) and a second bevel gear (2133); the first motor (2131) is fixedly mounted on the top of the valve body (2); the first bevel gear (2132) is fixedly mounted on the output end of the first motor (2131); and the second bevel gear (2133) is fixedly sleeved on the threaded sleeve (211) and meshes with the first bevel gear (2132).

6. The valve control structure for a sterilizing cabinet according to claim 1, characterized in that: A first limiting rod (217) is slidably mounted on a side of the top of the valve body (2) away from the first screw rod (212), and the lower end of the first limiting rod (217) is fixedly connected to the limiting plate (27).

7. The valve control structure for a sterilizing cabinet according to claim 1, characterized in that: The second driving member (215) comprises a second motor (2151), a main gear (2152) and a slave gear (2153); the second motor (2151) is fixedly mounted on the bottom of the valve body (2); the main gear (2152) is fixedly mounted on the output end of the second motor (2151); and the slave gear (2153) is fixedly mounted on the lower end of the second screw rod (214) and meshes with the main gear (2152).

8. The valve control structure for a sterilizing cabinet according to claim 1, characterized in that: Second limiting rods (218) are fixedly mounted on both sides of the inner bottom wall of the valve body (2), and the second limiting rods (218) slide and extend into the limiting block (29).

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