Control valve of medical cleaning machine

Abstract

The utility model belongs to the field of control valves, and provides a medical cleaning machine control valve which comprises a valve body, an inlet and an outlet are formed in the front position and the rear position of the valve body respectively, a base is arranged at the bottom of the valve body, a fixing seat and a sealing seat are arranged in the upper position and the lower position in the valve body respectively, and the sealing seat is located on the base. A sliding rod is downwards arranged in the fixing base, a sealing bowl is fixed to the upper portion of the sliding rod, the lower portion of the sliding rod penetrates out of the sealing base and the base and is provided with a bottom block, a spring is arranged on the sliding rod and located between the base and the bottom block, an annular opening is formed in the fixing base, the upper portion of the sealing bowl is a groove ring located in the annular opening, and a sealing gasket is arranged in the groove ring. According to the cleaning machine control valve, on one hand, residual cleaning water can be prevented from flowing into the cleaning machine from the outlet and flowing out of the cleaning machine from the inlet, on the other hand, part of pressure intensity of the cleaning water can be reduced in the using process, and secondary damage to an affected part caused by the sprayed cleaning water is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of control valves, and in particular relates to a control valve for a medical cleaning machine. Background Art

[0002] With the continuous development of medical technology, the application scope of cleaning machine control valves is also expanding. They are widely used in various medical equipment, providing important support and protection for the medical process.

[0003] When medical staff use a cleaning machine to clean a patient's affected area, the cleaning fluid within the machine is sprayed through the cleaning gun until it reaches the affected area. During the actual cleaning process, the control valve generally only prevents fluid backflow and cannot automatically reduce the pressure of the fluid. If the cleaning fluid pressure is too high during cleaning, it may cause secondary damage to the affected area. Utility Model Content

[0004] In view of the above problems, the purpose of the present invention is to provide a medical cleaning machine control valve, aiming to solve the problem that the existing cleaning machine control valve is unable to automatically reduce the pressure of the fluid.

[0005] The utility model adopts the following technical solutions:

[0006] The cleaning machine control valve includes a valve body, an inlet and an outlet are respectively opened at the front and rear positions of the valve body, a base is provided at the bottom of the valve body, a fixed seat and a sealing seat are respectively provided at the upper and lower positions of the valve body, the sealing seat is located on the base, a sliding rod is provided downwardly in the fixed seat, the upper part of the sliding rod is fixed with a sealing bowl, the lower part passes through the sealing seat and the base and is provided with a bottom block, a spring is provided on the sliding rod between the base and the bottom block, an annular opening is provided in the fixed seat, the upper part of the sealing bowl is a groove ring located in the annular opening, a sealing gasket is provided in the groove ring, the groove ring forms a seal with the annular opening through the sealing gasket, the inlet is respectively connected with the space below the groove ring and the top opening of the sealing seat, and the outlet is connected with the lower part of the sealing seat.

[0007] Furthermore, a pressure ring is provided for sealing above the sealing seat, and a circle of grooves is opened in the middle position of the sealing seat along the circumferential direction.

[0008] Furthermore, the inlet and outlet are respectively provided with dust covers.

[0009] Furthermore, a circle of limiting blocks is provided at the top of the annular opening.

[0010] Furthermore, a sliding groove is opened in the middle of the fixing seat, and the sliding rod is located in the sliding groove.

[0011] Furthermore, the outer periphery of the base is a stepped opening, forming two circles of threads, wherein the upper thread is screwed into the bottom of the straight valve body, and the lower thread is screwed with a protective cover.

[0012] The beneficial effect of the present invention is that when the cleaning action is completed, the water outlet of the cleaning machine can be closed by the switch button, the cleaning liquid no longer flows out of the cleaning machine, and the pressure in the stamping area gradually weakens until it returns to normal. During this process, the spring gradually recovers its deformation, and under the action of the spring, the sliding rod moves downward a short distance until the sealing bowl moves into the sealing seat and re-forms the seal, and the control valve is closed, thereby preventing residual cleaning water from flowing into the outlet and out of the inlet into the cleaning machine.

[0013] In addition, when the cleaning water passes through the control valve and then flows to the spray gun, due to the high pressure of the cleaning water, the sealing bowl is pushed upward by the pressure of the cleaning water until the sealing bowl is away from the sealing seat. The control valve is opened, and the pressure of the cleaning water can be partially reduced during this process, thereby preventing the sprayed cleaning water from causing secondary damage to the affected area. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an overall cross-sectional view of a control valve for a medical cleaning machine provided by the utility model.

[0015] Figure 2 This is a schematic diagram of a sealing seat provided by the utility model.

[0016] Figure 3 This is a schematic diagram of the base structure provided by the utility model. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not intended to limit the utility model.

[0018] In order to illustrate the technical solution of the present invention, specific embodiments are provided below.

[0019] For the sake of convenience, only the parts related to the embodiments of the present invention are shown.

[0020] Combine Figure 1-3As shown, the cleaning machine control valve includes a valve body 1, and the front and rear positions of the valve body 1 are respectively provided with an inlet 2 and an outlet 3. The bottom of the valve body 1 is provided with a base 15, and the upper and lower positions in the valve body 1 are respectively provided with a fixed seat 4 and a sealing seat 5. The sealing seat 5 is located on the base 15, and a sliding rod 6 is provided downwardly in the fixed seat 4. The upper part of the sliding rod 6 is fixed with a sealing bowl 7, and the lower part passes through the sealing seat 5 and the base 15 and is provided with a bottom block 8. A spring 9 is provided on the sliding rod 6 between the base and the bottom block, and an annular opening 16 is provided in the fixed seat 4. The upper part of the sealing bowl 7 is a groove ring 10 located in the annular opening, and a sealing gasket 11 is provided in the groove ring 10. The groove ring 10 forms a seal with the annular opening 16 through the sealing gasket 11, and the inlet 2 is respectively connected with the space below the groove ring 10 and the top opening of the sealing seat 5, and the outlet 3 is connected with the lower part of the sealing seat 5.

[0021] This control valve is mainly installed on various medical cleaning machines. When medical staff use the cleaning machine to clean the patient's affected area, the cleaning liquid in the cleaning machine is sprayed out through the cleaning gun to the patient's affected area for cleaning.

[0022] In this structure, the space below the groove ring in the annular opening constitutes a stamping area. When the control valve is in a non-working state, the control valve is in a closed state because the sealing bowl is located in the sealing seat. When the cleaning fluid enters the valve body from the inlet of the control valve, the cleaning fluid only flows into the stamping area, because the pressure of the cleaning fluid is relatively high and the groove ring 10 forms a seal with the annular opening through the sealing gasket 11. Under the impact of the cleaning fluid, the sealing bowl will move upward a short distance in the annular opening, and the slide rod will move upward accordingly. During this process, the spring is gradually compressed until the sealing bowl is away from the sealing seat, at which time the valve body is opened. Then the cleaning fluid flows in from the top opening of the sealing seat, flows out from the outlet and is sprayed out through the cleaning gun to clean the affected area. As Figure 1 The figure shows the state of the valve body being opened.

[0023] When the cleaning process is complete, the water outlet of the cleaning machine can be closed by pressing the switch button. Cleaning liquid no longer flows out of the cleaning machine, and the pressure in the stamping area gradually decreases until it returns to normal. During this process, the spring gradually recovers its deformation, and the slide rod moves downward a short distance under the action of the spring until the sealing bowl moves into the sealing seat and re-establishes a seal, and the control valve closes. This prevents excess cleaning water from flowing into the cleaning machine through the outlet and out of the inlet.

[0024] Furthermore, after the cleaning water passes through the control valve and flows to the spray gun, the high pressure of the cleaning water pushes the sealing bowl upward until it moves away from the sealing seat, at which point the control valve opens. This process reduces the pressure of the cleaning water, preventing the sprayed cleaning water from causing secondary damage to the affected area.

[0025] As a preferred structure, Figure 2 A pressure ring 51 is provided above the sealing seat 5 for sealing, and a circle of notches 52 is opened in the middle of the sealing seat along the circumferential direction.

[0026] In this structure, a pressure ring is located above the sealing seat, and a base is located below the sealing seat. The sealing seat is mounted within the valve body via the pressure ring and the base. Since the base can be removed from the valve body, the sealing seat can also be removed from the valve body.

[0027] First, remove the base from the valve body, and then remove the sealing seat. This facilitates subsequent maintenance and replacement. The sealing seat has a circle of notches circumferentially defined in its center. When the valve body is open, cleaning water flows in through the top opening of the sealing seat, passes through the notches, and exits through the outlet. These notches serve as channels for cleaning water flow, helping to achieve pressure balance during valve closing and opening.

[0028] As a specific structure, such as Figure 3 The outer periphery of the base 15 is a stepped opening, formed with two circles of threads, wherein the upper thread is marked as 171 and the lower thread is marked as 172. The upper thread 171 is screwed into the bottom of the straight valve body 1, and the lower thread 172 is screwed with a protective cover 18.

[0029] To remove the base from the valve body, first unscrew the protective cover, then unscrew the base block from under the slide rod. Then, rotate the base until it is unscrewed from the valve body. This completes the removal of the base and allows the sealing seat to be removed. The entire disassembly process is relatively simple.

[0030] When the control valve is installed in front of the cleaning machine, a dust cover 12 is provided at the inlet 2 and outlet 3 of the valve body. Under the protection of the dust cover, some impurities such as dust can be prevented from entering the valve body.

[0031] In this structure, a slide groove 14 is formed in the middle of the fixing seat 4, and the slide rod 6 is located in the slide groove 14. The slide groove serves to install the slide rod, and on the other hand, when the slide rod moves up and down in the slide groove, the slide groove serves to guide and limit the slide rod, making the slide rod more stable during the up and down sliding process.

[0032] In addition, a circle of stoppers 13 is provided at the top of the annular opening. As the slide rod moves upward, the sealing bowl moves upward within the annular opening until the top of the sealing bowl contacts the stoppers. The sealing bowl then moves away from the sealing seat, the valve is opened, and the slide rod no longer moves upward. The stoppers serve to limit the position of the sealing bowl.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A medical cleaning machine control valve, characterized by: The control valve of the cleaning machine includes a valve body, an inlet and an outlet are respectively opened at the front and rear positions of the valve body, a base is provided at the bottom of the valve body, a fixed seat and a sealing seat are respectively provided at the upper and lower positions of the valve body, the sealing seat is located on the base, a sliding rod is provided downwardly in the fixed seat, the upper part of the sliding rod is fixed with a sealing bowl, the lower part passes through the sealing seat and the base and is provided with a bottom block, a spring is provided on the sliding rod between the base and the bottom block, an annular opening is provided in the fixed seat, the upper part of the sealing bowl is a groove ring located in the annular opening, a sealing gasket is provided in the groove ring, the groove ring forms a seal with the annular opening through the sealing gasket, the inlet is respectively connected with the space below the groove ring and the top opening of the sealing seat, and the outlet is connected with the lower part of the sealing seat.

2. A medical cleaning machine control valve according to claim 1, characterized in that: A pressure ring is provided for sealing above the sealing seat, and a circle of notches is provided at the middle position of the sealing seat along the circumferential direction.

3. A medical cleaning machine control valve as claimed in claim 2, characterized in that: The inlet and outlet are respectively provided with dustproof covers.

4. A medical cleaning machine control valve as claimed in claim 3, characterized in that: A circle of limiting blocks is provided on the top of the annular opening.

5. A medical cleaning machine control valve according to claim 4, characterized in that: A sliding groove is provided in the middle of the fixing seat, and the sliding rod is located in the sliding groove.

6. A medical cleaning machine control valve according to claim 5, characterized in that: The outer periphery of the base is a stepped opening formed with two circles of threads, wherein the upper thread is screwed into the bottom of the straight valve body, and the lower thread is screwed with a protective cover.

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