Plastering mechanism

Abstract

The present invention discloses a mortar spreading mechanism for a mortar spreading robot, comprising: a material bin, including: a feeding end; a discharging end; and at least two slurry channels, the at least two slurry channels communicating the feeding end with the discharging end, the at least two slurry channels being spaced apart from each other and arranged along the width direction of the material bin; and a valve provided at the feeding end, the valve including: a valve body, inside which there are a first channel and a second channel spaced apart from each other, the number of slurry channels communicated by the first channel being greater than the number of slurry channels communicated by the second channel; and a valve core movably provided in the valve body, the valve core being capable of closing the first channel and the second channel, or selectively opening the first channel or the second channel. When spreading wide bricks, the valve opens the first channel; when spreading narrow bricks, the valve opens the second channel. Since the number of slurry channels communicated by the second channel is less than the number of slurry channels communicated by the first channel, the mortar spreading mechanism can flexibly adapt to bricks of different widths.

Description

Technical Field

[0001] The present invention relates to the field of construction technology, and particularly to a mortar spreading mechanism. Background Art

[0002] When building walls on a construction site, it often occurs that a wide wall intersects with a narrow wall. According to the process requirements, it is necessary to first build the corner at the intersection point and then build towards the end of the wall. When using a bricklaying robot to build the corner, wide bricks and narrow bricks need to be alternately laid. Therefore, a mortar spreading device that can adapt to the changes in wide and narrow bricks is required to complete the mortar spreading process before laying. Summary of the Invention

[0003] An embodiment of the present invention provides a mortar spreading mechanism that can flexibly adapt to bricks of different widths and narrowness to complete the mortar spreading for bricks of different widths and narrowness.

[0004] An embodiment of the present invention provides a mortar spreading mechanism for a mortar spreading robot, including: a material bin, including: a feeding end; a discharging end; and at least two slurry channels that connect the feeding end and the discharging end, and the at least two slurry channels are spaced apart from each other and arranged along the width direction of the material bin; and a valve provided at the feeding end, the valve including: a valve body, inside which there are a first channel and a second channel spaced apart from each other, the number of slurry channels connected by the first channel is greater than the number of slurry channels connected by the second channel; and a valve core that is movably provided in the valve body and can close the first channel and the second channel, or selectively open the first channel or the second channel.

[0005] According to the mortar spreading mechanism of the present invention, the mortar spreading mechanism includes a material bin and a valve. The material bin includes a feeding end, a discharging end, and at least two slurry channels.

[0006] According to the foregoing embodiment of the present invention, the total cross-sectional area of the first channel is greater than the total cross-sectional area of the second channel.

[0007] According to any one of the foregoing embodiments of the present invention, the at least two slurry channels include N first slurry channels and M second slurry channels, where N is a positive integer and M is an integer greater than or equal to 2. Along the width direction of the material bin, the M second slurry channels are symmetrically distributed on both sides of the N first slurry channels, the first channel connects the N first slurry channels and the M second slurry channels, and the second channel connects the N first slurry channels.

[0008] According to any one of the foregoing embodiments of the present invention, the at least two slurry channels include one first slurry channel and two second slurry channels.

[0009] According to any one of the foregoing embodiments of the present invention, the first channel includes at least two sub-channels that are arranged along the width direction of the material bin.

[0010] According to any of the foregoing embodiments of the present invention, the number of sub-channels is the same as the number of slurry channels and they are connected in one-to-one correspondence.

[0011] According to any of the foregoing embodiments of the present invention, the grouting mechanism further includes: a driving member connected to the valve core, and the driving member is used to drive the valve core to move relative to the valve body to switch the state of the valve.

[0012] According to any of the foregoing embodiments of the present invention, the valve core further includes: a core body located inside the valve body; and a core shaft connected to the core body. The core shaft is rotatably arranged in the valve body, and one end of the core shaft extends out of the valve body and is connected to the driving member.

[0013] According to any of the foregoing embodiments of the present invention, the core body includes a first guiding surface and a second guiding surface. The first guiding surface and the second guiding surface are respectively arranged on both sides of the core shaft, and the included angle between the first guiding surface and the second guiding surface is an obtuse angle, such that: in the state where the valve core opens the first channel, the first guiding surface obliquely guides the slurry into the first channel; in the state where the valve core opens the second channel, the second guiding surface obliquely guides the slurry into the second channel.

[0014] According to any of the foregoing embodiments of the present invention, the valve body includes: a first valve body provided with a slurry inlet; a second valve body, in which the first channel and the second channel are arranged. The second valve body is detachably connected to the first valve body to form a valve body chamber, and the valve core is movably arranged in the valve body chamber; a first sealing ring embedded in the first valve body; and a second sealing ring embedded in the second valve body.

[0015] According to the grouting mechanism of the present invention, the grouting mechanism includes a material bin and a valve. The valve is arranged at the feeding end. The material bin includes a feeding end, a discharging end, and at least two slurry channels. The valve includes: a valve body and a valve core. Inside the valve body, there are a first channel and a second channel spaced apart from each other. The number of slurry channels connected to the first channel is greater than the number of slurry channels connected to the second channel. The valve core is movably arranged in the valve body, and the valve core can close the first channel and the second channel, or selectively open the first channel or the second channel. When the grouting mechanism is not working, the valve core closes the first channel and the second channel. When the grouting mechanism needs to grout a wide brick, the valve core can open the first channel, and the first channel is connected to a certain number of slurry channels. The slurry enters the connected slurry channels through the first channel to grout the wide brick. When the grouting mechanism needs to grout a narrow brick, the valve core can open the second channel, and the second channel is connected to a certain number of slurry channels. The slurry enters the connected slurry channels through the second channel to grout the narrow brick. Since the number of slurry channels connected to the second channel is less than the number of slurry channels connected to the first channel, the grouting mechanism can flexibly adapt to bricks of different widths to complete the grouting of bricks of different widths. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0017] Figure 1 Stereoscopic schematic diagram of a perspective of a plastering mechanism of the present invention;

[0018] Figure 2 Exploded schematic diagram of some parts of the previous embodiment of the plastering mechanism of the present invention;

[0019] Figure 3 Top view schematic diagram of the first channel and the second channel of the valve in an embodiment of the plastering mechanism of the present invention;

[0020] Figure 4 Top view schematic diagram of the silo in an embodiment of the plastering mechanism of the present invention;

[0021] Figure 5 Stereoscopic schematic diagram of the silo in an embodiment of the plastering mechanism of the present invention;

[0022] Figure 6 Cross-sectional schematic diagram of the silo in an embodiment of the plastering mechanism of the present invention;

[0023] Figure 7 Exploded schematic diagram of some parts of the valve in an embodiment of the plastering mechanism of the present invention;

[0024] Figure 8 Partial cross-sectional schematic diagram of the valve in the closed state in an embodiment of the plastering mechanism of the present invention;

[0025] Figure 9 Partial cross-sectional schematic diagram of the valve when plastering narrow bricks in an embodiment of the plastering mechanism of the present invention;

[0026] Figure 10 Partial cross-sectional schematic diagram of the valve when plastering wide bricks in an embodiment of the plastering mechanism of the present invention.

[0027] Explanation of the reference numerals in the drawings:

[0028] 100 - silo; 110 - feeding end; 120 - discharging end; 130 - slurry channel; 131 - first slurry channel; 132 - second slurry channel; 140 - nylon gasket; W - width direction;

[0029] 200 - Valve; 210 - Valve body; 211 - First channel; 2111 - Sub - channel; 212 - Second channel; 213 - First valve body; 2131 - Slurry inlet; 214 - Second valve body; 215 - First sealing ring; 216 - Second sealing ring;

[0030] 220 - Spool; 221 - Core body; 2211 - First guiding surface; 2212 - Second guiding surface; 222 - Core shaft;

[0031] 300 - Driving part;

[0032] 400 - Fixed seat.

[0033] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0036] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0037] Currently, the existing mortar - spreading mechanisms cannot flexibly adapt to bricks of different widths. When mortar needs to be spread on relatively narrow bricks, mortar will leak on both sides, resulting in waste of mortar and the sides of the bricks will also be stained with mortar.

[0038] The embodiments of the present invention provide a mortar - spreading mechanism that can flexibly adapt to bricks of different widths to complete mortar spreading for bricks of different widths.

[0039] Figure 1 A perspective three-dimensional schematic diagram of an embodiment of the plastering mechanism of the present invention; Figure 2 An exploded schematic diagram of some parts of a previous embodiment of the plastering mechanism of the present invention. As Figure 1-2 shown, the plastering mechanism includes: a material bin 100 and a valve 200. The material bin 100 includes: a feed end 110, a discharge end 120, and at least two slurry channels 130. The at least two slurry channels 130 communicate the feed end 110 with the discharge end 120. The at least two slurry channels 130 are spaced apart from each other and arranged along the width direction W of the material bin 100. The valve 200 is disposed at the feed end 110. The valve 200 includes: a valve body 210 and a valve core 220. The valve body 210 is internally provided with a first channel 211 and a second channel 212 that are spaced apart from each other. The number of slurry channels 130 communicated by the first channel 211 is greater than the number of slurry channels 130 communicated by the second channel 212. The valve core 220 is movably disposed in the valve body 210, and the valve core 220 can close the first channel 211 and the second channel 212, or selectively open the first channel 211 or the second channel 212.

[0040] According to the plastering mechanism 100 of the present invention, the plastering mechanism 100 includes a hopper 100 and a valve 200. The valve 200 is disposed at the feeding end 110. The hopper 100 includes a feeding end 110, a discharging end 120, and at least two slurry channels 130. The valve 200 includes: a valve body 210 and a valve core 220. Inside the valve body 210, there are a first channel 211 and a second channel 212 spaced apart from each other. The number of slurry channels 130 connected to the first channel 211 is greater than the number of slurry channels 130 connected to the second channel 212. The valve core 220 is movably disposed in the valve body 210, and the valve core 220 can close the first channel 211 and the second channel 212, or selectively open the first channel 211 or the second channel 212. When the plastering mechanism 100 is not working, the valve core 220 closes the first channel 211 and the second channel 212. When the plastering mechanism 100 needs to plaster a wide brick, the valve core 220 can open the first channel 211, and the first channel 211 is connected to a certain number of slurry channels 130, and the plastering mechanism 100 can plaster the surface of the wide brick. When the plastering mechanism 100 needs to plaster a narrow brick, the valve core 220 can open the second channel 212, and the second channel 212 is connected to a certain number of slurry channels 130, and the plastering mechanism 100 plasters the surface of the narrow brick. Since the number of slurry channels 130 connected to the first channel 211 is greater than the number of slurry channels 130 connected to the second channel 212, the plastering mechanism 100 can flexibly adapt to bricks of different widths to complete the plastering of bricks of different widths. At the same time, the plastering mechanism 100 realizes the adjustment of the width of the slurry output through the valve 200, avoiding the waste of slurry caused by leakage of slurry on both sides when plastering narrow bricks and preventing the sides of the bricks from being stained with slurry. At the same time, the structure is simple, the volume is small and light, and the adjustment effect is better.

[0041] In some embodiments, such as Figure 1As shown, the grouting mechanism 100 further includes a driving member 300. The driving member 300 is connected to the valve core 220, and the driving member 300 is used to drive the valve core 220 to move relative to the valve body 210 to switch the state of the valve 200. In this embodiment, when the grouting mechanism 100 needs to grout wide bricks, the driving member 300 drives the valve core 220 to move relatively so that the valve 200 closes the second channel 212 and opens the first channel 211, enabling the first channel 211 to communicate with a certain number of slurry channels 130, and then the grouting mechanism 100 grouts the surface of the wide bricks. When the grouting mechanism 100 needs to grout narrow bricks, the driving member 300 drives the valve core 220 to move relatively so that the valve 200 closes the first channel 211 and opens the second channel 212, enabling the first channel 211 to communicate with a certain number of slurry channels 130, and then the grouting mechanism 100 grouts the surface of the wide bricks. When the grouting mechanism 100 is not working, the driving member 300 drives the valve core 220 to move relatively so that the valve 200 closes the first channel 211 and the second channel 212. This improves the automatic control of the grouting mechanism 100 over the valve 200, making the operation of switching the state of the valve 200 convenient and reliable.

[0042] In some embodiments, as Figure 1 shown, the grouting mechanism further includes a bearing sleeve (not shown in the figure) and a fixing seat 400. The bearing sleeve is used to connect the driving member 300 and the valve 200. The fixing seat 400 fixedly connects the grouting mechanism to the grouting robot.

[0043] In some embodiments, as Figure 1-2 shown, at least two slurry channels 130 include: N first slurry channels 131 and M second slurry channels 132. Here, N is a positive integer, and M is an integer greater than or equal to 2. Along the width direction W of the silo 100, the M second slurry channels 132 are symmetrically distributed on both sides of the N first slurry channels 131. The first channel 211 communicates with the N first slurry channels 131 and the M second slurry channels 132, and the second channel 212 communicates with the N first slurry channels 131.

[0044] In this embodiment, the first channel 211 is connected to N first slurry channels 131 and M second slurry channels 132. When plastering wide bricks, the valve 200 closes the second channel 212 and opens the first channel 211. The first channel 211 is connected to N first slurry channels 131 and M second slurry channels 132, and the slurry flows from the first channel 211 to N first slurry channels 131 and M second slurry channels 132, so that the plastering mechanism 100 plasters the surface of the wide brick. The second channel 212 is connected to N first slurry channels 131. When plastering narrow bricks, the valve 200 closes the first channel 211 and opens the second channel 212. The second channel 212 is connected to N first slurry channels 131, and the slurry flows from the second channel 212 to N first slurry channels 131, so that the plastering mechanism 100 plasters the surface of the narrow brick. Since N is a positive integer, M is an integer greater than or equal to 2, and along the width direction W of the silo 100, the M second slurry channels 132 are symmetrically distributed on both sides of the N first slurry channels 131. When the robotic arm of the plastering robot picks up the bricks, it can directly align the bricks with the center position of the discharge port of the silo 100, improving the stability and accuracy during the plastering process.

[0045] In some embodiments, as Figure 2 shown, the total cross-sectional area of the first channel 211 is larger than that of the second channel 212. In this embodiment, when plastering wide bricks, the valve 200 opens the first channel 211. The first channel 211 is connected to a certain number of slurry channels 130, and the slurry enters the slurry channels 130 connected to it from the first channel 211, and then plasters the surface of the wide brick. When plastering narrow bricks, the valve 200 opens the second channel 212. The second channel 212 is connected to a certain number of slurry channels 130, and the slurry enters the slurry channels 130 connected to it from the second channel 212, and then plasters the surface of the narrow brick. Since the slurry channels 130 are spaced apart from each other and arranged along the width direction W of the silo 100, and the number of slurry channels 130 connected by the first channel 211 is greater than the number of slurry channels 130 connected by the second channel 212, and the total cross-sectional area of the first channel 211 is larger than that of the second channel 212, the plastering mechanism can flexibly adapt to bricks of different widths. While completing the plastering of bricks of different widths, it also ensures that when plastering wide bricks and narrow bricks, the thickness of the slurry applied to the brick surface can be kept basically the same, making the masonry wall more beautiful.

[0046] In some embodiments, as Figure 2-3As shown, the first channel 211 includes at least two sub-channels 2111, and the at least two sub-channels 2111 are arranged along the width direction W of the silo 100. In this embodiment, the first channel 211 includes at least two sub-channels 2111, and the at least two sub-channels 2111 are arranged along the width direction W of the silo 100. In some other alternative embodiments, the second channel 212 may also include multiple sub-channels 2111.

[0047] Furthermore, the number of sub-channels 2111 is the same as the number of slurry channels 130 and they are in one-to-one correspondence and communication. In this embodiment, the number of sub-channels 2111 included in the first channel 211 is the same as the number of slurry channels 130 in communication and they are in one-to-one correspondence. This enables the slurry application mechanism 100 to have uniform slurry discharge at the discharge port of the silo 100 when applying slurry to the brick surface, improving the slurry application effect.

[0048] In some embodiments, as Figure 4 shown, the silo 100 further includes a nylon gasket 140. The nylon gasket 140 is disposed at the feeding end 110 of the silo, and the nylon gasket 140 is disposed between the valve 200 and the silo 100. Through holes corresponding to and communicating with the first channel 211 and the second channel 212 are provided on the nylon gasket to ensure the passage of the slurry.

[0049] It should be noted that in this embodiment, a nylon gasket is disposed between the feeding end 110 of the silo 100 and the valve 200. In other alternative embodiments, gaskets made of other materials may also be selected, such as rubber gaskets.

[0050] In some embodiments, as Figure 7 shown, the valve core 220 further includes a core body 221 and a core shaft 222. The core body 221 is located within the valve body 210. The core shaft 222 is connected to the core body 221. The core shaft 222 is rotatably disposed in the valve body 210, and one end of the core shaft 222 extends out of the valve body 210 and is connected to the driving member 300. In this embodiment, when the slurry application mechanism 100 needs to switch the state of the valve 200, the driving member 300 drives the core shaft 222, such that the core shaft 222 drives the core body 221 to move relative to the valve body 210, so as to achieve the state switching of the valve core 220 for the valve 200. The structure of the valve core 220 is simple, compact, convenient to operate, and reliable.

[0051] In some embodiments, as Figure 7As shown in the figure, the valve body 210 includes: a first valve body 213, a second valve body 214, a first sealing ring 215, and a second sealing ring 216. The first valve body 213 is provided with a slurry inlet 2131. The first channel 211 and the second channel 212 are arranged in the second valve body 214. The second valve body 214 is detachably connected to the first valve body 213 to form a valve body 210 chamber, and the valve core 220 is movably arranged in the valve body 210 chamber. The first sealing ring 215 is embedded in the first valve body 213. The second sealing ring 216 is embedded in the second valve body 214.

[0052] In this embodiment, the first valve body 213 and the second valve body 214 are detachably connected to form a valve body chamber, and the valve core 220 is movably arranged in the valve body 210 chamber. This makes the structure of the valve 200 simple and compact, with a reasonable design, easy to disassemble, and convenient to use. The first sealing ring 215 is embedded in the first valve body 213. The second sealing ring 216 is embedded in the second valve body 214. This makes the valve 200 have good sealing performance, a long service life, and at the same time, the replacement of the sealing ring is convenient and the cost is low.

[0053] Further, as Figure 1-6 shown, at least two slurry channels 130 include a first slurry channel 131 and two second slurry channels 132. In this embodiment, along the width direction W of the silo 100, the two second slurry channels 132 are symmetrically distributed on both sides of a first slurry channel 131. When plastering wide bricks, the valve 200 opens the first channel 211, and the first channel 211 communicates with a first slurry channel 131 and two second slurry channels 132. The slurry flows from the first channel 211 to a first slurry channel 131 and two second slurry channels 132, and then the plastering mechanism 100 plasters the surface of the wide brick. When plastering narrow bricks, the valve 200 opens the second channel 212, and the second channel 212 communicates with a first slurry channel 131. The slurry flows from the first channel 211 to a first slurry channel 131, and then the plastering mechanism 100 plasters the surface of the narrow brick. The plastering mechanism 100 simplifies the structure while ensuring the plastering of bricks with different widths.

[0054] In some embodiments, as Figure 7-10 shown, the core body 221 includes a first guiding surface 2211 and a second guiding surface 2212. The first guiding surface 2211 and the second guiding surface 2212 are respectively arranged on both sides of the core shaft 222. The included angle between the first guiding surface 2211 and the second guiding surface 2212 is an obtuse angle, so that: in the state where the valve core 220 opens the first channel 211, the first guiding surface 2211 obliquely guides the slurry into the first channel 211; in the state where the valve core 220 opens the second channel 212, the second guiding surface 2212 obliquely guides the slurry into the second channel 212.

[0055] In this embodiment, since the angle between the first flow guiding surface 2211 and the second flow guiding surface 2212 disposed on both sides of the mandrel 222 is an obtuse angle, when the valve core 220 opens the first channel 211, the first flow guiding surface 2211 obliquely guides the slurry into the first channel 211, ensuring that the slurry smoothly flows into the connected slurry channel 130 from the first channel 211. At the same time, when the valve core 220 opens the second channel 212, the second flow guiding surface 2212 obliquely guides the slurry into the second channel 212, and the slurry smoothly flows into the connected slurry channel 130 from the second channel 212. The conveying effect is improved and the fluidity of the slurry is high.

[0056] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A mortar spreading mechanism for a mortar spreading robot, characterized in that, Comprising: A silo, comprising: A feed end; A discharge end; and At least two slurry channels that connect the feed end and the discharge end, the at least two slurry channels being spaced apart from each other and arranged along the width direction of the silo; and A valve disposed at the feed end, the valve comprising: A valve body having a first channel and a second channel spaced apart from each other inside, the number of slurry channels connected by the first channel being greater than the number of slurry channels connected by the second channel; and A valve core movably disposed in the valve body, the valve core being capable of closing the first channel and the second channel, or selectively opening the first channel or the second channel.

2. The plastering mechanism according to claim 1, characterized in that, The total cross-sectional area of the first channel is greater than the total cross-sectional area of the second channel.

3. The plastering mechanism according to claim 1, characterized in that, The at least two slurry channels include N first slurry channels and M second slurry channels, where N is a positive integer and M is an integer greater than or equal to 2. Along the width direction of the silo, the M second slurry channels are symmetrically distributed on both sides of the N first slurry channels. The first channel connects the N first slurry channels and the M second slurry channels, and the second channel connects the N first slurry channels.

4. The plastering mechanism according to claim 3, characterized in that, The at least two slurry channels include one first slurry channel and two second slurry channels.

5. The plastering mechanism according to claim 1, characterized in that, The first channel includes at least two sub-channels arranged along the width direction of the silo.

6. The plastering mechanism according to claim 5, wherein The number of the sub-channels is the same as the number of the slurry channels and they are connected in one-to-one correspondence.

7. The plastering mechanism according to claim 1, characterized in that, The slurry spreading mechanism further comprises: A driving member connected to the valve core, the driving member being configured to drive the valve core to move relative to the valve body to switch the state of the valve.

8. The plastering mechanism according to claim 7, characterized in that, The valve core further comprises: A core body located inside the valve body; and A core shaft connected to the core body, the core shaft being rotatably disposed in the valve body, and one end of the core shaft extending out of the valve body and connected to the driving member.

9. The plastering mechanism according to claim 8, characterized in that, The core body includes a first guiding surface and a second guiding surface, the first guiding surface and the second guiding surface are respectively disposed on both sides of the core shaft, and the angle between the first guiding surface and the second guiding surface is an obtuse angle, such that: In the state where the valve core opens the first channel, the first guiding surface obliquely guides the slurry into the first channel; In the state where the valve core opens the second channel, the second guiding surface obliquely guides the slurry into the second channel.

10. The plastering mechanism according to claim 1, characterized in that, The valve body includes: A first valve body provided with a slurry inlet; A second valve body, the first channel and the second channel are disposed in the second valve body, the second valve body is detachably connected to the first valve body to form a valve body chamber, and the valve core is movably disposed in the valve body chamber; A first sealing ring embedded in the first valve body; and A second sealing ring embedded in the second valve body.

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