CN218377804U - Control valve and endoscope flushing device - Google Patents

Abstract

The present application relates to a control valve and an endoscopic irrigation device. A control valve is used for an endoscope flushing device and comprises a valve body and a valve core, wherein the valve body is provided with an accommodating cavity, and the valve body is provided with an air inlet, an air supply port, a liquid inlet, a main liquid supply port and an auxiliary liquid supply port. The valve core is movably arranged in the containing cavity in a penetrating way along the axis direction of the valve body. The valve core is provided with a first working position, a second working position and a third working position which are arranged at intervals along the axial direction of the valve body, and when the valve core is in the first working position, the valve core is configured to be capable of being communicated with the air inlet and the air outlet. When the valve core is in the second working position, the liquid inlet and the main liquid feeding port are communicated with each other, and the air inlet and the air feeding port are not communicated with each other. When the valve core is at the third working position, the liquid inlet is communicated with the auxiliary liquid feeding port, and the air inlet is not communicated with the air feeding port. By using the control valve, air supply, main water supply and auxiliary water supply can be respectively carried out by controlling the valve core of the control valve, and the convenience of cleaning operation is improved.

Description

Control valve and endoscope flushing device

Technical Field

The application relates to the technical field of endoscopes, in particular to a control valve and an endoscope flushing device.

Background

The endoscope is a detection instrument integrating traditional optics, ergonomics, precision machinery, modern electronics, mathematics and software into a whole.

When the endoscope is used, if the lens of the endoscope has foreign matters, the foreign matters can be shielded, so that medical staff cannot timely and comprehensively know the conditions of the affected part, and the effect of operation or examination is influenced. However, the conventional endoscope flushing device has a problem that a washing operation is inconvenient.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a control valve and an endoscope flushing device, which solve the problem that the conventional endoscope flushing device is inconvenient in cleaning operation.

According to one aspect of the present application, there is provided a control valve for an endoscopic irrigation device, the control valve comprising:

the valve body is provided with an accommodating cavity, and the valve body is provided with an air inlet, an air supply port, a liquid inlet, a main liquid supply port and an auxiliary liquid supply port;

the valve core is movably arranged in the containing cavity in a penetrating way along the axial direction of the valve body;

the valve core is provided with a first working position, a second working position and a third working position which are arranged at intervals along the axial direction of the valve body;

when the valve core is at the first working position, the valve core is configured to be capable of operatively communicating the air inlet and the air outlet;

when the valve core is positioned at the second working position, the liquid inlet is communicated with the main liquid feeding port, and the air inlet is not communicated with the air feeding port;

when the valve core is positioned at the third working position, the liquid inlet is communicated with the auxiliary liquid feeding port, and the air inlet is not communicated with the air feeding port.

In one embodiment, the control valve further comprises a first sealing member provided to an outer peripheral wall of the spool;

when the valve core is located at the first working position, the first sealing element is located between the liquid inlet and the main liquid feeding port along the axis direction of the valve body, and the first sealing element is connected between the outer peripheral wall of the valve core and the inner peripheral wall of the valve body in a sealing mode, so that the main liquid feeding port and the auxiliary liquid feeding port are not communicated with the liquid inlet respectively.

In one embodiment, when the valve core is in the second working position, the first sealing element is spaced from the inner peripheral wall of the valve body along the radial direction of the valve core, and the liquid inlet and the main liquid feeding port are communicated with each other.

In one embodiment, the control valve further comprises two second seals spaced from the first seal in the axial direction of the spool;

when the valve core is located at the second working position, the second sealing element is connected between the outer peripheral wall of the valve core and the inner peripheral wall of the valve body in a sealing mode, and the auxiliary liquid feeding port is located between the two second sealing elements, so that the liquid inlet and the auxiliary liquid feeding port are not communicated with each other.

In one embodiment, the valve core is provided with a communication channel;

when the valve core is located at the third working position, the liquid inlet is communicated with the auxiliary liquid feeding port through the communication channel, the second sealing elements are hermetically connected between the outer peripheral wall of the valve core and the inner peripheral wall of the valve body, and the main liquid feeding port is located between the two second sealing elements, so that the liquid inlet is not communicated with the main liquid feeding port.

In one embodiment, the control valve further comprises a third seal arranged at a distance from the two second seals along the axial direction of the valve core; the third sealing element is blocked between the air inlet and the liquid inlet, between the air inlet and the main liquid feeding port and between the air inlet and the auxiliary liquid feeding port, so that the air inlet is not communicated with the liquid inlet, the main liquid feeding port and the auxiliary liquid feeding port respectively.

In one embodiment, the accommodating cavity comprises an air inlet cavity communicated with the air inlet;

the control valve further comprises a fourth sealing element, the fourth sealing element is connected between the outer peripheral wall of the valve core and the inner peripheral wall of the valve body and configured to define a communication port with the inner peripheral wall of the valve body when the air pressure in the air inlet cavity is larger than or equal to a preset value so as to communicate the air inlet and the air outlet.

In one embodiment, the valve core is provided with an exhaust passage communicated with the air inlet cavity, and the valve core is configured to be operable to seal and block an outlet of the exhaust passage so as to enable the air pressure in the air inlet cavity to reach the preset value.

In one embodiment, the fourth seal member includes a main body portion and a weak portion connected in an axial direction of the valve body;

the main body part is arranged on the peripheral wall of the valve core; the main body part is used for being connected with the inner peripheral wall of the valve body in a sealing way, so that the air inlet and the air supply opening are not communicated with each other;

and a concave part is arranged on one side of the weak part, which is far away from the main body part, and the concave part is concave towards one side close to the main body part along the axis direction of the valve core, so that the weak part can be separated from the inner peripheral wall of the valve body when the air pressure in the air inlet cavity is greater than or equal to a preset value, and the communication port is defined.

In one embodiment, the radial dimension of the main body portion decreases gradually in a direction pointing along the weakened portion toward the main body portion.

In one embodiment, when the valve core is in the second working position or the third working position, one side of the main body part, which is far away from the valve core, is connected to the inner peripheral wall of the valve body in a sealing manner, so that the air inlet and the air outlet are not communicated with each other.

According to another aspect of the application, an endoscopic irrigation device is provided comprising the control valve described above.

In one embodiment, the endoscopic irrigation device further comprises:

the air inlet pipe is used for supplying air to the lens of the endoscope; the air inlet pipe is communicated with the air inlet;

the liquid supply container is provided with an accommodating cavity for accommodating cleaning liquid, and the air inlet pipe is communicated with the accommodating cavity; and

the liquid inlet pipe is used for providing cleaning liquid for a lens of the endoscope; one end of the liquid inlet pipe extends into the cleaning liquid in the accommodating cavity, and the other end of the liquid inlet pipe is communicated with the liquid inlet.

When the control valve is used for air supply operation, the valve core can be controlled, so that the air inlet and the air supply opening are communicated, and thus, air flowing into the air inlet can flow to the lens of the endoscope through the air supply opening, so that the air supply operation is realized. When the main water feeding operation is needed, the valve core can move relative to the valve body along the axial direction of the valve body so as to be positioned at the second working position, at the moment, the liquid inlet and the main liquid feeding port are communicated with each other, the air inlet and the air feeding port are not communicated with each other, and the cleaning liquid can flow to the lens of the endoscope through the liquid inlet and the main liquid feeding port, so that the lens of the endoscope can be cleaned. When the auxiliary water feeding operation is needed, the valve core can move relative to the valve body along the axial direction of the valve body so as to be positioned at a third working position, at the moment, the liquid inlet is communicated with the auxiliary liquid feeding port, the air inlet is not communicated with the air feeding port, and the cleaning liquid can flow to the focus where the lens of the endoscope is positioned through the liquid inlet and the auxiliary liquid feeding port, so that the focus where the lens of the endoscope is positioned can be cleaned. It can be understood that, with the control valve, the air supply, the main water supply and the auxiliary water supply can be respectively carried out by controlling the valve core of the control valve, the operation is easy, and the convenience of the cleaning operation is improved.

Drawings

FIG. 1 shows a schematic structural view of an endoscopic irrigation device in an embodiment of the present application;

fig. 2 shows a schematic structural diagram of a control valve (air supply process diagram) in an embodiment of the present application;

fig. 3 shows a schematic structural diagram of a control valve in an embodiment of the present application (a schematic diagram of a main liquid feeding process);

fig. 4 shows a schematic structural diagram of a control valve in an embodiment of the present application (a schematic secondary liquid feeding process);

fig. 5 shows a schematic structural diagram of a fourth seal in an embodiment of the present application.

In the figure: 10. an endoscopic irrigation device;

100. a control valve;

111. a valve body; 1111. an accommodating cavity; 11111. a first chamber; 11112. a second chamber; 11113. an air inlet cavity; 1112. an air inlet; 1113. an air supply port; 1114. a liquid inlet; 1115. an installation port; 1116. a first step portion; 1117. a second step portion; 112. a valve core; 1121. an exhaust passage; 1122. a communication channel; 11221. a first opening; 11222. a second opening; 1123. a card slot; 1124. a pressing part; 113. a fourth seal member; 1131. a main body portion; 1132. a weakened portion; 11321. a first side; 11322. a second face; 1133. a recessed portion; 114. a first elastic member; 115. a first seal member; 116. a second seal member; 117. a third seal member; 118. a fifth seal member; 131. a main liquid feeding port; 132. an auxiliary liquid feeding port;

200. an air inlet pipe; 210. A main air inlet pipe; 220. A branch air inlet pipe;

300. a liquid supply container; 301. An accommodating chamber;

400. a liquid inlet pipe; 500. an air supply pipe; 600. a main liquid delivery pipe; 700. and an auxiliary liquid feeding pipe.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

The applicant finds that the traditional endoscope flushing device comprises an air supply pipe, a main water supply pipe and an auxiliary water supply pipe, wherein an air supply valve is arranged on the air supply pipe, a main water supply valve is arranged on the main water supply pipe, an auxiliary water supply valve is arranged on the auxiliary water supply pipe, if air supply operation is needed, the air supply valve needs to be opened, and the main water supply valve and the auxiliary water supply valve need to be closed.

In order to solve the problem that the traditional endoscope flushing device is inconvenient to clean, the applicant designs a control valve through intensive research, the control valve can be controlled to respectively carry out air supply, main water supply and auxiliary water supply operation, and the operation is convenient.

Fig. 1 shows a schematic structural view of an endoscopic irrigation device 10 in an embodiment of the present application.

Referring to fig. 1, an endoscope flushing device 10 includes a control valve 100, and air supply, main water supply, and sub water supply operations can be performed by the control valve 100.

Fig. 2-4 show a schematic diagram of the control valve 100 in an embodiment of the present application.

An embodiment of the present application provides a control valve 100 for an endoscope flushing device 10, wherein the control valve 100 comprises a valve body 111 and a valve core 112. The valve body 111 has a receiving cavity 1111, the valve body 111 is provided with an air inlet 1112, an air supply port 1113, a liquid inlet 1114, a main liquid supply port 131 and an auxiliary liquid supply port 132, the valve core 112 movably penetrates through the receiving cavity 1111 along the axial direction of the valve body 111, the valve core 112 has a first working position, a second working position and a third working position which are arranged at intervals along the axial direction of the valve body 111, as shown in fig. 2, the valve core 112 is at the first working position, as shown in fig. 3, the valve core 112 is at the second working position, and as shown in fig. 4, the valve core 112 is at the third working position.

When the valve spool 112 is in the first operating position, the valve spool 112 is configured to operatively communicate the air inlet 1112 and the air outlet 1113.

When the control valve 100 is used, the air inlet 1112 can be externally connected with an air source (for example, in the embodiment shown in fig. 1, the air inlet 1112 is connected with the air source through the air inlet pipe 200, and the air source can supply air required for cleaning to the air inlet 1112 through the air inlet pipe 200), the air supply pipe 500 is connected to the air supply port 1113, one end of the air supply pipe 500, which is far away from the air supply port 1113, is provided with an air jet port facing to a lens of an endoscope, and when the control valve 100 is required to perform air supply operation, the valve core 112 can be operated to enable the air inlet 1112 and the air supply port 1113 to be communicated with each other, so that the air supply operation can be performed well on the lens of the endoscope.

When the valve core 112 is at the second working position, the liquid inlet 1114 and the main liquid feeding port 131 are communicated with each other, and the air inlet 1112 and the air feeding port 1113 are not communicated with each other; when the valve body 112 is in the third operating position, the liquid inlet 1114 and the sub liquid feeding port 132 are communicated with each other, and the air inlet 1112 and the air feeding port 1113 are not communicated with each other.

When the control valve 100 is used, a cleaning liquid is supplied to the liquid inlet 1114, a main liquid feeding tube 600 connected to the main liquid feeding port 131 is connected to the main liquid feeding port 131, a main liquid feeding port facing the lens of the endoscope is provided at an end of the main liquid feeding tube 600 away from the main liquid feeding port 131, an auxiliary liquid feeding tube 700 is connected to the auxiliary liquid feeding port 132, and an auxiliary liquid ejecting port facing the lesion is provided at an end of the auxiliary liquid feeding tube 700 away from the auxiliary liquid feeding port 132. When the main water feeding operation is required, the valve core 112 can move relative to the valve body 111 along the axial direction of the valve body 111 to enable the valve core 112 to be in the second working position, at this time, the liquid inlet 1114 and the main liquid feeding port 131 are communicated with each other, the air inlet 1112 and the air feeding port 1113 are not communicated with each other, and the cleaning liquid can flow to the lens of the endoscope through the liquid inlet 1114 and the main liquid feeding port 131, so that the lens of the endoscope can be cleaned.

When the auxiliary water feeding operation is needed, the valve core 112 can move relative to the valve body 111 along the axial direction of the valve body 111, so that the valve core 112 is located at the third working position, at this time, the liquid inlet 1114 and the auxiliary liquid feeding port 132 are communicated with each other, the air inlet 1112 and the air supply port 1113 are not communicated with each other, and the cleaning liquid can flow to the focus where the lens of the endoscope is located through the liquid inlet 1114 and the auxiliary liquid feeding port 132, so that the focus where the lens of the endoscope is located can be cleaned.

It can be understood that, with the control valve 100, the operations of air supply, main water supply and sub water supply can be performed by operating the valve core 112 of the control valve 100, respectively, which is easy to operate and improves the convenience of the cleaning operation.

In some embodiments, referring to fig. 1 in combination with fig. 3 and 4, the endoscope flushing device 10 further includes an air inlet pipe 200, a liquid supply container 300 and a liquid inlet pipe 400, wherein the air inlet pipe 200 is used for supplying air to a lens of the endoscope, the air inlet pipe 200 is communicated with an air inlet 1112, the liquid supply container 300 has a containing cavity 301 for containing a cleaning liquid, the air inlet pipe 200 is communicated with the containing cavity 301, the liquid inlet pipe 400 is used for supplying the cleaning liquid to the lens of the endoscope, one end of the liquid inlet pipe 400 extends into the cleaning liquid in the containing cavity 301, and the other end of the liquid inlet pipe 400 is communicated with the liquid inlet 1114.

With such an arrangement, when the valve core 112 is in the second working position, the liquid inlet 1114 is communicated with the main liquid feeding port 131, the air inlet 1112 is not communicated with the air feeding port 1113, the liquid inlet 1114 is not communicated with the auxiliary liquid feeding port 132, the gas conveyed into the accommodating chamber 1111 through the air inlet pipe 200 is discharged back to the air inlet pipe 200 from the air inlet 1112 and can enter the accommodating chamber 301, and the gas can press the cleaning liquid in the accommodating chamber 301 to the liquid inlet 1114 and then is conveyed to the lens of the endoscope through the main liquid feeding port 131 to clean the lens of the endoscope, so that the main water feeding operation can be realized.

Similarly, when the valve core 112 is at the third working position, the liquid inlet 1114 and the auxiliary liquid feeding port 132 are communicated with each other, the liquid inlet 1114 and the main liquid feeding port 131 are not communicated with each other, and the air inlet 1112 and the air outlet 1113 are not communicated with each other, so that the air in the accommodating cavity 1111 can be discharged back to the air inlet pipe 200 from the air inlet 1112 and then can enter the accommodating cavity 301, the cleaning liquid in the accommodating cavity 301 can be pumped to the liquid inlet 1114 by the air, and then the cleaning liquid is conveyed to the focus of the lens of the endoscope through the auxiliary liquid feeding port 132, and the focus of the lens of the endoscope can be cleaned, so that the auxiliary water feeding operation can be realized.

It can be understood that, in the endoscope flushing device 10, the control valve 100 can be operated to make the gas flowing into the gas inlet pipe 200 capable of pressure feeding the cleaning liquid, so that the gas feeding operation, the main water feeding operation and the auxiliary water feeding operation can share one gas source, a water feeding pump is omitted, and the auxiliary water feeding operation is performed without additionally operating a foot switch, thereby saving the overall cost of the endoscope flushing device 10 to a certain extent and improving the convenience of the cleaning operation.

In some embodiments, referring to fig. 1, the air inlet pipe 200 includes a main air inlet pipe 210 and a branch air inlet pipe 220 connected to the main air inlet pipe 210, an air source is connected to one end of the main air inlet pipe 210 to supply air to the main air inlet pipe 210, the control valve 100 is disposed at the other end of the main air inlet pipe 210, the other end of the main air inlet pipe 210 is communicated with the air inlet 1112, and a connection point between the main air inlet pipe 210 and the branch air inlet pipe 220 is located between the air source and the control valve 100, so that the air source inputs air into the main air inlet pipe 210 and can respectively flow into the branch air inlet pipe 220 and the control valve 100, and the air of the air source can flow into the receiving cavity 1111 of the control valve 100.

In some embodiments, referring to fig. 2, the control valve 100 further includes a first sealing member 115 disposed on an outer peripheral wall of the valve core 112, when the valve core 112 is in the first working position, the first sealing member 115 is located between the liquid inlet 1114 and the main liquid sending port 131 along an axial direction of the valve body 111, and the first sealing member 115 is sealingly connected between the outer peripheral wall of the valve core 112 and an inner peripheral wall of the valve body 111, so that the main liquid sending port 131 and the auxiliary liquid sending port 132 are not communicated with the liquid inlet 1114 respectively.

When the valve core 112 is at the first working position, the main liquid feeding port 131 and the auxiliary liquid feeding port 132 are not communicated with the liquid inlet 1114 respectively, that is, the main liquid feeding port 131 is not communicated with the liquid inlet 1114, and the auxiliary liquid feeding port 132 is not communicated with the liquid inlet 1114, which is beneficial to improving the reliability of the air feeding operation.

In some embodiments, when the valve spool 112 is in the second operating position, the first seal 115 is spaced from the inner peripheral wall of the valve body 111 in the radial direction of the valve spool 112, and the liquid inlet 1114 and the main liquid supply port 131 are communicated with each other.

Specifically, the housing chamber 1111 includes a first chamber 11111 and a second chamber 11112 arranged from below to above in the axial direction of the valve body 111, the first chamber 11111 communicates with the liquid inlet 1114, the radial dimension of the first chamber 11111 is larger than the radial dimension of the second chamber 11112, the first seal 115 is located in the first chamber 11111 and is sealingly connected between the outer circumferential wall of the valve body 112 and the inner circumferential wall of the valve body 111 when the valve body 112 is in the first operating position, and the first seal 115 is located in the first chamber 11111 when the valve body 112 is in the second operating position, so that the first seal 115 and the inner circumferential wall of the valve body 111 have an interval in the radial direction of the valve body 112, so that the liquid inlet 1114 can communicate with the main liquid feeding port 131 through the first and second chambers.

It can be understood that, when the valve core 112 is in the first working position, the first sealing element 115 is blocked and disposed between the main liquid feeding port 131 and the liquid inlet 1114, and when the valve core 112 is in the second working position, the main liquid feeding port 131 and the liquid inlet 1114 can communicate with each other through the interval between the first sealing element 115 and the inner peripheral wall of the valve body 111.

In some embodiments, the control valve 100 further includes two second seals 116 disposed spaced apart from the first seal 115 in the axial direction of the spool 112. When the valve element 112 is in the second operating position, the second sealing member 116 is sealingly connected between the outer peripheral wall of the valve element 112 and the inner peripheral wall of the valve body 111, and the auxiliary liquid supply port 132 is located between the two second sealing members 116, so that the liquid inlet 1114 and the auxiliary liquid supply port 132 do not communicate with each other. Specifically, when the spool 112 is in the second operating position, the inlet of the secondary fluid port 132 is located between the two second seals 116.

When the valve core 112 is at the second working position, the two second sealing members 116 can be used to make the liquid inlet 1114 and the auxiliary liquid feeding port 132 not communicate with each other, so that the valve core 112 can be controlled to be at the second working position, so as to separately perform the main water feeding operation, which is beneficial to improving the reliability of the main water feeding operation to a certain extent.

In some embodiments, the valve core 112 has a communication channel 1122, when the valve core 112 is in the third working position, the liquid inlet 1114 is communicated with the secondary liquid sending port 132 through the communication channel 1122, all the second sealing members 116 are hermetically connected between the outer peripheral wall of the valve core 112 and the inner peripheral wall of the valve body 111, and the primary liquid sending port 131 is located between the two second sealing members 116, so that the liquid inlet 1114 and the primary liquid sending port 131 are not communicated with each other. Specifically, when the spool 112 is in the third operating position, the inlet of the main fluid supply port 131 is located between the two second sealing members 116.

When the valve core 112 is at the third working position, the first sealing element 115 has an interval with the inner peripheral wall of the valve body 111 along the radial direction of the valve core 112, and the liquid inlet 1114 and the auxiliary liquid feeding port 132 are communicated with each other; however, the two second sealing members 116 may be used to prevent the liquid inlet 1114 and the main liquid feeding port 131 from communicating with each other, so that the valve core 112 may be controlled to be in the third working position, so as to perform the auxiliary water feeding operation independently, which is beneficial to improving the reliability of the auxiliary water feeding operation to a certain extent.

In some embodiments, the main liquid feeding port 131 and the auxiliary liquid feeding port 132 are disposed at intervals in the axial direction of the valve body 111 in the valve body 111, and the main liquid feeding port 131 is closer to the liquid inlet 1114 than the auxiliary liquid feeding port 132 in the axial direction of the valve body 111. Wherein the axial direction of the valve body 111 is parallel to the axial direction of the spool 112.

Compared with the frequency of main water supply operation, the frequency of main water supply operation is higher, so that the main liquid supply port 131 is closer to the liquid inlet 1114, the water supply stroke is reduced to a certain extent, and the efficiency of main water supply operation is improved.

In some embodiments, the communication passage 1122 has a first opening 11221 and a second opening 11222 which are oppositely disposed from below in the axial direction of the valve body 111, the first opening 11221 is located between the first seal 115 and one of the second seals 116 (the second seal 116 is the second seal 116 adjacent to the first seal 115 of the two second seals 116), the second opening 11222 is located between the other second seal 116 (the other second seal 116 is located on the side of the second seal 116 adjacent to the first seal 115 facing away from the first seal 115) and a third seal 117 described below, and in the second operation position of the valve body 112, the first opening 11221 of the communication passage 1122 is communicated with the liquid inlet 1114, but the inlet of the secondary liquid feed port 132 is located between the two second seals 116 adjacent to the first seal 115, so that the secondary liquid feed port 132 and the second opening 11222 are not communicated with each other, so that the secondary liquid feed ports 132 and 1114 are not communicated with each other.

When the valve spool 112 is in the third operating position, the first opening 11221 of the communication passage 1122 is communicated with the fluid inlet 1114, and the second opening 11222 of the communication passage 1122 is communicated with the auxiliary fluid delivery port 132, so that the auxiliary fluid delivery port 132 and the fluid inlet 1114 are communicated with each other.

In some embodiments, the control valve 100 further includes a third sealing member 117 spaced apart from the two second sealing members 116 along the axial direction of the valve spool 112, the third sealing member 117 and the first sealing member 115 respectively face opposite sides of the two second sealing members 116 along the axial direction of the valve spool 112, and the third sealing member 117 is blocked between the air inlet 1112 and the liquid inlet 1114, and is blocked between the air inlet 1112 and the main liquid feeding port 131, and is blocked between the air inlet 1112 and the auxiliary liquid feeding port 132, so that the air inlet 1112 is not communicated with the liquid inlet 1114, the main liquid feeding port 131, and the auxiliary liquid feeding port 132, respectively.

By such arrangement, the air supply operation and the liquid supply operation can be performed without interference, and the reliability of the air supply operation, the main liquid supply operation and the auxiliary liquid supply operation can be improved.

In some embodiments, referring to fig. 2 and fig. 4, one end of the valve core 112 extends out of the receiving cavity 1111, and is provided with a pressing portion 1124, so that the valve core 112 is conveniently pressed by the pressing portion 1124, so as to drive the valve core 112 to move from the first working position to the second working position or the third working position along the axial direction of the valve body 111.

In some embodiments, referring to fig. 2 to 4, the valve element 112 is provided with a first elastic member 114 extending along an axial direction of the valve element 112, the first elastic member 114 is located outside the receiving cavity 1111, and the first elastic member 114 is respectively connected to the valve element 112 and the valve body 111 to enable the valve element 112 to be reset after an external force applied to the valve element 112 is removed. That is, after the external force applied to the valve element 112 is removed, the valve element 112 can return from the second operating position or the third operating position to the first operating position by the elastic restoring force of the first elastic member 114.

In some embodiments, referring to fig. 2, the valve body 111 is provided with a mounting port 1115 for allowing the valve plug 112 to pass through, the mounting port 1115 is communicated with the receiving cavity 1111, and the valve plug 112 can be disposed in the receiving cavity 1111 through the mounting port 1115. The fifth sealing member 118 is disposed on the outer peripheral wall of the valve core 112, and the fifth sealing member 118 is connected between the outer peripheral wall of the valve core 112 and the inner peripheral wall of the valve body 111 in a sealing manner to block the accommodating cavity 1111 from the external environment, so as to prevent the accommodating cavity 1111 from being communicated with the external environment through the mounting hole 1115, thereby facilitating the improvement of the sealing performance of the air supply operation. In this embodiment, the fifth sealing member 118 may be clamped to the outer peripheral wall of the valve core 112.

In some embodiments, the receiving cavity 1111 includes an air inlet cavity 11113 communicated with the air inlet 1112, and the control valve 100 further includes a fourth sealing member 113, where the fourth sealing member 113 is connected between an outer peripheral wall of the valve core 112 and an inner peripheral wall of the valve body 111, and is configured to define a communication port with the inner peripheral wall of the valve body 111 to communicate the air inlet 1112 with the air inlet 1113 when the air pressure in the air inlet cavity 11113 is greater than or equal to a preset value.

The phrase "the fourth seal 113 is sealingly connected between the outer peripheral wall of the valve body 111 and the outer peripheral wall of the valve body 112 to block the air inlet port 1112 and the air outlet port 1113" means that the fourth seal 113 sealingly connected between the outer peripheral wall of the valve body 112 and the inner peripheral wall of the valve body 111 can block the air inlet port 1112 and the air outlet port 1113. For example, the fourth seal 113 is located between a portion of the valve body 111 where the air inlet 1112 is provided and a portion of the valve body 111 where the air outlet 1113 is provided, so that the air inlet 1112 and the air outlet 1113 do not communicate with each other to block the air inlet 1112 and the air outlet 1113.

The fourth seal 113 is sealingly connected between the outer circumferential wall of the valve body 111 and the outer circumferential wall of the valve body 112, and can block the air inlet 1112 and the air outlet 1113, which is advantageous for improving the airtightness of the control valve 100. If the air pressure in the air inlet chamber 11113 is greater than or equal to the predetermined value, it indicates that the air tightness in the receiving chamber 1111 is better, and at this time, a communication port is defined between the fourth sealing member 113 and the inner peripheral wall of the valve body 111, so that the air inlet 1112 and the air outlet 1113 are communicated with each other, and the air supply operation to the lens of the endoscope can be well realized. The control valve 100 can prevent gas leakage during gas supply, and effectively improve the gas tightness and reliability of the control valve 100.

Specifically, the intake chamber 11113 is located between the fourth seal 113 and the third seal 117.

In some embodiments, the fourth sealing member 113 has elasticity and is configured to deform when the air pressure in the air inlet chamber 11113 is greater than or equal to a preset value and separate from the inner peripheral wall of the valve body 111 to define a communication opening.

Thus, when the air pressure in the air inlet chamber 11113 is greater than or equal to the preset value, the fourth sealing member 113 can deform and separate from the inner peripheral wall of the valve body 111 to define a communication opening, so that the air inlet 1112 and the air supply opening 1113 are communicated with each other, and the air supply operation to the lens of the endoscope can be realized.

In some embodiments, the valve element 112 has an exhaust channel 1121 communicating with the air intake chamber 11113, and the valve element 112 is configured to operatively seal an outlet of the exhaust channel 1121 so that the air pressure in the air intake chamber 11113 can reach a preset value.

When the endoscope is used, the outlet of the exhaust channel 1121 can be sealed and blocked by fingers or a sealing plug (fig. 2 shows an example of the outlet blocked by the fingers and arranged on the exhaust channel 1121), so that the exhaust channel 1121 is not communicated with the external environment, a gas source introduces gas into the accommodating cavity 1111 through the gas inlet pipe 200 and the gas inlet 1112, the gas pressure in the gas inlet cavity 11113 can reach a preset value, and a communication port can be further defined between the fourth sealing element 113 and the inner peripheral wall of the valve body 111 to enable the gas inlet 1112 and the gas supply port 1113 to be communicated with each other, so that the gas supply operation of a lens of the endoscope can be well realized.

It can be understood that if the outlet of the exhaust channel 1121 is not blocked by a finger or a sealing plug, the air pressure in the air intake chamber 11113 may be smaller than a predetermined value, and the fourth sealing member 113 may return to the initial state under the restoring force of elastic deformation and be sealingly connected between the outer circumferential wall of the valve core 112 and the inner circumferential wall of the valve body 111 to block the air inlet 1112 and the air outlet 1113, so that the fourth sealing member 113 may be used to improve the air tightness of the control valve 100, and prevent the air in the air intake pipe 200 from leaking through the air outlet 1113 when the air supply is not required.

It should be noted that the gas source (e.g., a gas pump) supplying gas to the gas inlet 1112 may be always in an open state, and when gas supply is not needed, the gas flowing into the gas inlet chamber 11113 from the gas inlet 1112 may be exhausted to the external environment through the exhaust channel 1121.

In this embodiment, the exhaust channel 1121 penetrates through the valve body 111 along the axial direction of the valve body 111 and penetrates to the pressing portion 1124, that is, the outlet of the exhaust channel 1121 is disposed on the pressing portion 1124, so that the outlet of the exhaust channel 1121 is conveniently sealed and blocked by a finger or a sealing plug.

In this embodiment, the air intake cavity 11113 is communicated with an inlet of the exhaust channel 1121, and a finger or a sealing plug is used to seal and block an outlet of the exhaust channel 1121, so that the exhaust channel 1121 is not communicated with the external environment, and the air source introduces air into the housing cavity 1111 through the air intake tube 200 and the air inlet 1112, so that the air pressure in the air intake cavity 11113 can reach a preset value.

In some embodiments, referring to fig. 5, the fourth sealing member 113 includes a main body portion 1131 and a weak portion 1132 connected along an axial direction of the valve body 111, the main body portion 1131 is disposed on an outer peripheral wall of the valve core 112, the main body portion 1131 is configured to be in sealing connection with an inner peripheral wall of the valve body 111, so that the air inlet 1112 and the air outlet 1113 are not communicated with each other, a recessed portion 1133 is disposed on a side of the weak portion 1132 facing away from the main body portion 1131, and the recessed portion 1133 is recessed toward a side close to the main body portion 1131 along the axial direction of the valve core 112, so that the weak portion 1132 can be separated from the inner peripheral wall of the valve body 111 when an air pressure in the air inlet chamber 11113 is greater than or equal to a preset value, and defines a communication port.

The side of the weak portion 1132 facing away from the main body portion 1131 refers to the side of the weak portion 1132 facing away from the main body portion 1131 in the axial direction of the valve body 112.

The weak portion 1132 refers to a portion of the fourth seal 113 that is connected to the main body portion 1131 and can be separated from the inner circumferential wall of the valve body 111 when the air pressure in the intake chamber 11113 is greater than or equal to a preset value.

When the air pressure in the air inlet cavity 11113 is greater than or equal to the preset value, the weak portion 1132 can be separated from the inner peripheral wall of the valve body 111 and define a communication port with the inner peripheral wall of the valve body 111, so that the air inlet 1112 and the air supply port 1113 are communicated with each other, and the air supply operation to the lens of the endoscope can be well realized.

In some embodiments, the weak portion 1132 is disposed at an angle to a radial direction of the receiving cavity 1111, and the weak portion 1132 has a predetermined thickness so as to be separated from the inner circumferential wall of the valve body 111 when the air pressure in the air inlet cavity 11113 is greater than or equal to a predetermined value, and define a communication opening with the inner circumferential wall of the valve body 111.

Referring to fig. 5, the weakened portion 1132 has a first surface 11321 facing away from the valve element 112 and a second surface 11322 opposite the first surface 11321, and the thickness of the weakened portion 1132 refers to a dimension of the weakened portion 1132 along the first surface 11321 in a direction toward the second surface 11322.

If the thickness of the weak portion 1132 is too thin, the sealability between the inner circumferential walls of the valve body 111 of the fourth seal 113 may be affected when the air pressure in the air intake chamber 11113 is less than a preset value, and if the thickness of the weak portion 1132 is too thin, the weak portion 1132 may not be easily separated from the inner circumferential walls of the valve body 111 when the air pressure in the air intake chamber 11113 is greater than or equal to the preset value. Therefore, it is desirable that the weak portion 1132 has a predetermined thickness, so that the sealing performance between the inner peripheral walls of the valve body 111 of the fourth seal 113 can be ensured when the air pressure in the air intake chamber 11113 is less than a predetermined value, and the weak portion 1132 is separated from the inner peripheral walls of the valve body 111 and defines a communication opening with the inner peripheral walls of the valve body 111 when the air pressure in the air intake chamber 11113 is greater than or equal to the predetermined value.

In some embodiments, referring to fig. 2 in combination with fig. 5, the outer peripheral wall of the valve core 112 is provided with a slot 1123, the main body portion 1131 is provided with a clamping portion adapted to the slot 1123, and the outer peripheral wall of the valve core 112 and the main body portion 1131 are clamped with the clamping portion by means of the slot 1123.

The body 1131 of the fourth sealing member 113 can be engaged with the outer peripheral wall of the valve core 112, so as to facilitate the detachment or replacement of the fourth sealing member 113.

In some embodiments, when the valve spool 112 is in the second operating position or the third operating position, a side of the main body portion 1131 facing away from the valve spool 112 is sealingly connected to an inner peripheral wall of the valve body 111, so that the air inlet 1112 and the air outlet 1113 are not communicated with each other.

It can be understood that, compared with the weak portion 1132, the sealing performance of the main body portion 1131 is better (the contact area between the main body portion 1131 of the fourth seal member 113 and the inner peripheral wall of the valve body 111 is larger, so the sealing performance is better), when the air pressure in the air inlet chamber 11113 is greater than or equal to a preset value, because the main body portion 1131 is not provided with the recessed portion 1133, one side of the main body portion 1131, which is away from the valve element 112, can still be connected to the inner peripheral wall of the valve body 111 in a sealing manner, which is beneficial to improving the reliability of the main liquid feeding operation and the auxiliary liquid feeding operation.

In some embodiments, referring to fig. 5, the radial dimension of the body portion 1131 gradually decreases in a direction along the weakened portion 1132 toward the body portion 1131.

It can be understood that, the radial dimension of the main body portion 1131 is set to be gradually reduced, and when the valve element 112 is located at the second operating position or the third operating position, the main body portion 1131 can be arranged on the inner peripheral wall of the valve body 111 in an interference manner, so that the sealing performance of the main body portion 1131 is better, which is beneficial to improving the reliability of the main liquid feeding operation and the auxiliary liquid feeding operation.

Specifically, referring to fig. 2, the inner peripheral wall of the valve body 111 includes a first step 1116 and a second step 1117 corresponding to the body portion 1131. The first step 1116 and the second step 1117 are spaced along the axis of the valve body 111, and along the radial direction of the valve core 112, compared with the first step 1116, the second step 1117 is closer to the valve core 112, when the valve core 112 is at the second working position, the body 1131 of the fourth seal 113 is connected to the outer peripheral wall of the valve core 112 and the first step 1116 in a sealing manner, and when the valve core 112 is at the third working position, the body 1131 of the fourth seal 113 is connected to the outer peripheral wall of the valve core 112 and the second step 1117 in a sealing manner, so that the body 1131 of the fourth seal 113 on the valve core 112 can move along the axis direction of the valve core 112 along the valve body 111 and can move to the first step 1116 or the second step 1117 respectively, so as to form a reverse resistance to the fourth seal 113 at the second working position and the third working position respectively, so as to give an operator a warning signal for stopping the valve core 112 at the second working position or the third working position, thereby improving the reliability of the operation and the reliability of the main liquid feeding operation and the auxiliary liquid feeding operation.

In some embodiments, all of the first sealing members 115 and all of the second sealing members 116 are clamped to the outer peripheral wall of the valve core 112, so that the first sealing members 115 and/or the second sealing members 116 can be conveniently detached or replaced as required.

An endoscope flushing device 10 according to an embodiment of the present invention includes the control valve 100, the air inlet pipe 200, the liquid supply container 300, the liquid inlet pipe 400, the air supply pipe 500, the main liquid supply pipe 600, and the sub liquid supply pipe 700.

The endoscope flushing device 10 can alternatively perform air supply operation, main liquid supply operation, and sub liquid supply operation.

As shown in fig. 1 and 2, when the endoscope flushing device 10 performs air supply operation, the outlet of the exhaust channel 1121 may be blocked by hand, so that the exhaust channel 1121 is not communicated with the external environment, and the air source supplies air to the housing cavity 1111 through the air inlet pipe 200 and the air inlet 1112, so that the air pressure in the air inlet cavity 11113 can reach a preset value, and further, a communication port is defined between the fourth sealing member 113 and the inner peripheral wall of the valve body 111, so that the air inlet 1112 and the air supply port 1113 are communicated with each other, thereby well performing air supply operation to the lens of the endoscope.

As shown in fig. 1 and 3, when the endoscope flushing device 10 performs the main liquid feeding operation, the valve element 112 may be moved to the second operation position along the axial direction of the valve body 111, for example, one end of the valve element 112, at which the outlet of the exhaust channel 1121 is disposed, is pressed, so that the valve element 112 is moved downward along the axial direction of the valve body 111, and then the first sealing member 115, all of the second sealing member 116, the third sealing member 117, the fourth sealing member 113, and the fifth sealing member 118 are moved downward along the axial direction of the valve body 111, the main body 1131 of the fourth sealing member 113 is sealingly connected to the first stepped portion 1116, so that the air inlet 1112 and the air outlet 1113 are not communicated with each other, the first sealing member 115 is moved into the first cavity 11111, so that the liquid inlet 1114 and the main liquid feeding port 131 are communicated with each other, it can be understood that the air fed into the housing cavity 1111 through the air inlet pipe 200 may be discharged from the air inlet 1112 to the air inlet pipe 200 and then may enter the housing cavity 301, and the cleaning liquid in this way may be cleaned by the endoscope flushing device.

As shown in fig. 1 and 4, when the endoscope flushing device 10 performs the auxiliary liquid feeding operation, the valve body portion 1131 of the fourth seal 113 is sealingly connected to the second step portion 1117 so that the air inlet 1112 and the air outlet 1113 are not communicated with each other, the first seal 115 is located in the first chamber 11111, the liquid inlet 1114 and the auxiliary liquid feeding port 132 are capable of being communicated with each other, and the inlet of the main liquid feeding port 131 is located between the two second seals 116 adjacent to the first seal 115 so that the liquid inlet 1114 and the main liquid feeding port 131 are not communicated with each other, so that the gas in the housing chamber 1111 can be discharged from the air inlet 1112 to the air inlet pipe 200 and then can enter the housing chamber 301, and the gas can pressure-feed the cleaning liquid in the housing chamber 301 to the liquid inlet 1114 and then be fed to the focus of the endoscope through the auxiliary liquid feeding port 132 and the auxiliary liquid feeding pipe 700 to clean the focus of the endoscope.

As described above, the endoscope flushing device 10 of the present invention can alternatively perform an air supply operation to the lens of the endoscope, a cleaning operation to the lens of the endoscope, and a cleaning operation to the lesion where the lens of the endoscope is located.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (13)

1. A control valve for an endoscopic irrigation device (10), characterized in that said control valve (100) comprises:

the liquid-feeding valve comprises a valve body (111) and a valve body (111), wherein the valve body (111) is provided with an air inlet (1112), an air feeding port (1113), a liquid inlet (1114), a main liquid feeding port (131) and an auxiliary liquid feeding port (132);

a valve core (112) movably inserted in the containing cavity (1111) along the axial direction of the valve body (111);

the valve core (112) is provided with a first working position, a second working position and a third working position which are arranged at intervals along the axial direction of the valve body (111); when the valve core (112) is at the first working position, the valve core (112) is configured to be capable of operatively communicating the air inlet (1112) and the air outlet (1113); when the valve core (112) is at the second working position, the liquid inlet (1114) and the main liquid feeding port (131) are communicated with each other, and the air inlet (1112) and the air feeding port (1113) are not communicated with each other; when the valve core (112) is at the third working position, the liquid inlet (1114) and the auxiliary liquid feeding port (132) are communicated with each other, and the air inlet (1112) and the air feeding port (1113) are not communicated with each other.

2. The control valve of claim 1, wherein the control valve (100) further comprises a first seal (115) provided to an outer peripheral wall of the spool (112);

when the valve core (112) is at the first working position, the first sealing element (115) is positioned between the liquid inlet (1114) and the main liquid feeding port (131) along the axial direction of the valve body (111), and the first sealing element (115) is connected between the outer peripheral wall of the valve core (112) and the inner peripheral wall of the valve body (111) in a sealing manner, so that the main liquid feeding port (131) and the auxiliary liquid feeding port (132) are not communicated with the liquid inlet (1114) respectively.

3. The control valve according to claim 2, wherein the first seal (115) has a space from an inner peripheral wall of the valve body (111) in a radial direction of the valve spool (112) when the valve spool (112) is in the second operating position, and the liquid inlet port (1114) and the main liquid supply port (131) communicate with each other.

4. The control valve according to claim 2, wherein the control valve (100) further comprises two second seals (116) provided spaced from the first seal (115) in an axial direction of the spool (112);

when the valve core (112) is at the second working position, the second sealing element (116) is connected between the outer peripheral wall of the valve core (112) and the inner peripheral wall of the valve body (111) in a sealing mode, and the auxiliary liquid feeding port (132) is located between the two second sealing elements (116), so that the liquid inlet (1114) and the auxiliary liquid feeding port (132) are not communicated with each other.

5. The control valve of claim 4, wherein the spool (112) has a communication passage (1122);

when the valve core (112) is located at the third working position, the liquid inlet (1114) is communicated with the auxiliary liquid feeding port (132) through the communication channel (1122), the second sealing elements (116) are connected between the outer peripheral wall of the valve core (112) and the inner peripheral wall of the valve body (111) in a sealing mode, and the main liquid feeding port (131) is located between the two second sealing elements (116), so that the liquid inlet (1114) is not communicated with the main liquid feeding port (131).

6. The control valve according to claim 4, wherein the control valve (100) further comprises a third seal (117) provided spaced apart from the two second seals (116) in an axial direction of the spool (112); the third sealing element (117) is blocked between the air inlet (1112) and the liquid inlet (1114), between the air inlet (1112) and the main liquid sending port (131), and between the air inlet (1112) and the auxiliary liquid sending port (132), so that the air inlet (1112) is not communicated with the liquid inlet (1114), the main liquid sending port (131) and the auxiliary liquid sending port (132) respectively.

7. A control valve according to any of claims 1-6, characterized in that the housing chamber (1111) comprises an air inlet chamber (11113) communicating with the air inlet (1112);

the control valve (100) further comprises a fourth sealing element (113), wherein the fourth sealing element (113) is connected between the outer peripheral wall of the valve core (112) and the inner peripheral wall of the valve body (111) and configured to define a communication port with the inner peripheral wall of the valve body (111) when the air pressure in the air inlet cavity (11113) is larger than or equal to a preset value so as to communicate the air inlet (1112) and the air outlet (1113).

8. The control valve according to claim 7, wherein the spool (112) has an exhaust passage (1121) communicating with the intake chamber (11113), and the spool (112) is configured to be operable to sealingly block an outlet of the exhaust passage (1121) so that the air pressure in the intake chamber (11113) can reach the preset value.

9. The control valve according to claim 8, wherein the fourth seal member (113) includes a main body portion (1131) and a weak portion (1132) connected in an axial direction of the valve body (111);

the main body part (1131) is arranged on the outer peripheral wall of the valve core (112), and the main body part (1131) is used for being connected with the inner peripheral wall of the valve body (111) in a sealing way so as to enable the air inlet (1112) and the air outlet (1113) not to be communicated with each other;

one side of the weak portion (1132) departing from the main body portion (1131) is provided with a recessed portion (1133), the recessed portion (1133) is recessed towards one side close to the main body portion (1131) along the axial direction of the valve core (112), so that the weak portion (1132) can be separated from the inner peripheral wall of the valve body (111) when the air pressure in the air inlet cavity (11113) is larger than or equal to a preset value, and a communication opening is defined.

10. The control valve of claim 9, wherein a radial dimension of the body portion (1131) decreases gradually in a direction along the weakened portion (1132) toward the body portion (1131).

11. The control valve according to claim 9, wherein when the valve core (112) is in the second working position or the third working position, a side of the main body portion (1131) facing away from the valve core (112) is hermetically connected to an inner peripheral wall of the valve body (111) so that the air inlet (1112) and the air outlet (1113) are not communicated with each other.

12. An endoscopic irrigation device comprising a control valve (100) according to any of claims 1-11.

13. The endoscopic irrigation device according to claim 12, wherein the endoscopic irrigation device (10) further comprises:

an air inlet tube (200) for supplying air to a lens of the endoscope; the air inlet pipe (200) is communicated with the air inlet (1112);

a liquid supply container (300) provided with an accommodating cavity (301) for accommodating cleaning liquid, wherein the air inlet pipe (200) is communicated with the accommodating cavity (301); and

the liquid inlet pipe (400) is used for providing cleaning liquid for the lens of the endoscope; one end of the liquid inlet pipe (400) extends into the cleaning liquid in the accommodating cavity (301), and the other end of the liquid inlet pipe (400) is communicated with the liquid inlet (1114).

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