valve

Abstract

This invention discloses a valve comprising a front housing, a rear housing, an inner valve seat, a valve core, and a drive component. The front housing has a front channel extending along an axial direction, which has a first section and a second section along the axial direction. The front end of the rear housing is connected to the rear end of the front housing and has a rear channel extending along an axial direction. The rear channel communicates with the front channel, and the bottom wall of the rear channel has a valve core mounting position. The front end of the valve core mounting position is an inner section, and the bottom walls of the inner section, the second section, and the first section decrease in height sequentially, or the bottom walls of the inner section, the second section, and the first section are flush. The inner valve seat is disposed within the rear channel and is sealed to the inner wall of the rear channel. The valve core is located within the rear channel and is rotatably connected to the valve core mounting position. The drive component penetrates the rear housing and drives the valve core to press against the inner valve seat to close the rear channel or drives the valve core to separate from the inner valve seat to open the rear channel. The valve of this invention can effectively prevent liquid accumulation in the front or rear housing.

Description

Technical Field

[0001] This invention relates to the field of storage container technology, and in particular to a valve. Background Technology

[0002] Existing valves used for medium-sized bulk storage containers, such as butterfly valves, open by rotating a central shaft in the valve core, which in turn rotates the two sides of the valve core. Because the valve core is generally located inside the valve body, its flow rate is affected by the valve core and the rotating shaft; its sealing performance is relatively poor. Due to the friction between the butterfly valve's sealing ring and the valve body, the force required to open and close the valve is relatively large.

[0003] Recently, guide-groove type rising stem ball valves have been developed both domestically and internationally. The valve stem has an S-shaped guide groove that cooperates with a guide pin. When the valve stem rises, it causes the ball to detach from the valve seat and then rotate 90° counterclockwise to fully open the valve. When the valve stem descends, it causes the ball to rotate 90° clockwise and then press against the valve seat to close the valve. The disadvantages of this technology are that the valve stem has a long S-shaped guide groove, requiring the valve stem to spiral up or down within the guide groove during opening and closing, resulting in a large space occupied by the guide groove and a large rotation angle.

[0004] Chinese patent application number 99124192.4 discloses a disc-shaped double-track rotating and supporting valve opening and closing structure, which is composed of a fixed disc, a rotating disc, and a limiting pin. When an external force drives the valve stem, along with the rotating disc, it drives the limiting pin. The limiting pin rotates clockwise along the trajectory of the "circular arc" track on the fixed disc. When it rotates to the "straight line" track connected to the "circular arc" track, the rotating disc continues to rotate clockwise. Under the forced action of the "supporting" track on the rotating disc, the limiting pin is pushed open to the periphery of the fixed disc along the "straight line" track on the fixed disc. At this time, the limiting pin, together with the valve sealing structure, moves towards the valve seat, and the valve closes. When the valve stem rotates counterclockwise along with the rotating disk, under the forced action of the "supporting" track on the rotating disk, the limiting pin, together with the valve's sealing structure, first retracts towards the center of the fixed disk along the trajectory of the "straight line" track on the fixed disk, and then rotates counterclockwise along the trajectory of the "circular arc" track on the fixed disk, thus opening the valve. The technical disadvantage of this patent is that the use of the "circular arc connecting straight line" track requires high precision and has a complex processing technology. The valve core is a combined sphere, which makes it difficult to obtain a balanced preload, thereby causing damage to the valve core and shortening the valve's lifespan.

[0005] Chinese Patent 200620105067 describes a track-type plug valve, including a valve body, valve cover, operating element, valve stem, valve seat, valve plug forming a conical sealing pair with the valve seat, and a track mechanism. The track mechanism consists of a track ring with two guide grooves installed on the neck of the valve plug and a double pin plate with two guide pins inserted into the guide grooves. It also includes a locking nut and an adjusting ring for adjusting the installation position of the track ring. The disadvantages of this patent are that the transmission device has a complex structure and occupies a lot of external space of the valve body; the transmission device involves many parts and the assembly process is complicated.

[0006] In addition, due to the valve plug with a conical sealing pair, as well as the locking nut and adjusting ring for adjusting the installation position of the track ring, it requires multiple adjustments, making the operation complex.

[0007] Typical plastic valves use a compression seal facing the threaded opening. When high-temperature steam sterilization is required, the valve core will move away from the inner valve seat under the action of the steam. This requires a very strong and robust structure, which undoubtedly increases the cost significantly.

[0008] In typical sealing structures, after the valve core is sealed, the threaded opening of the housing and the internal cavity have sunken recesses. After multiple discharges or bottom fillings, liquid will remain in the recesses, making them difficult to clean. Summary of the Invention

[0009] The purpose of this invention is to provide a valve to solve the problems of the prior art.

[0010] To solve the above-mentioned technical problems, embodiments of the present invention provide a valve, comprising:

[0011] A front housing having a front channel extending along an axial direction, the front channel having a first segment and a second segment along the axial direction;

[0012] The rear housing has its front end connected to the rear end of the front housing and has a rear channel extending along the axial direction. The rear channel communicates with the front channel, and the bottom wall of the rear channel has a valve core mounting position. The portion of the rear channel located at the front end of the valve core mounting position is an inner section. The bottom wall of the inner section, the bottom wall of the second section, and the bottom wall of the first section are successively lower; or, the bottom wall of the inner section, the bottom wall of the second section, and the bottom wall of the first section are located on the same plane.

[0013] An inner valve seat is disposed within the rear channel and is sealed to the inner wall of the rear channel.

[0014] Valve core, the valve core being located within the rear channel and rotatably connected to the valve core mounting position; and

[0015] A drive element, which extends through the rear housing, is used to drive the valve core to press against the inner valve seat to close the rear channel or to drive the valve core to separate from the inner valve seat to open the rear channel.

[0016] In one embodiment, the bottom wall of the inner segment, the bottom wall of the second segment, and the bottom wall of the first segment gradually decrease in height.

[0017] In one embodiment, the bottom wall of the inner segment is a plane.

[0018] In one embodiment, the bottom wall of the second segment is a plane.

[0019] In one embodiment, the bottom wall of the second segment is flush with the bottom wall of the first segment.

[0020] In one embodiment, the size of the second segment gradually decreases from the rear end of the front housing to the first segment.

[0021] In one embodiment, the top wall of the second segment is formed by extending the bottom wall of the second segment circumferentially, and the top wall of the second segment is a truncated cone.

[0022] In one embodiment, the first segment is circular; the center of the second segment along the vertical direction is higher than the center of the first segment.

[0023] In one embodiment, the valve core has a flat structure, and a positioning rod is provided at the bottom end of the valve core; the valve core mounting position is provided with a rod hole for inserting the positioning rod; the driving member drives the valve core to rotate around the axis of the positioning rod to open or close the rear channel.

[0024] In one embodiment, the valve further includes:

[0025] An outer valve seat, the outer valve seat being disposed at the front end of the front housing; and

[0026] A valve cover that operably seals the front end of the front housing and abuts against the outer valve seat.

[0027] In one embodiment, the valve further includes a flange that is sealingly connected to the rear end of the rear housing.

[0028] This invention alters the height of the bottom wall of the front channel of the front housing and the bottom wall of the rear channel of the rear housing, making the bottom wall of the inner section of the rear channel higher than or equal to the bottom wall height of the second section of the front channel, while the bottom wall height of the second section is higher than or equal to the bottom wall height of the first section, effectively preventing liquid accumulation inside the front or rear housing. Attached Figure Description

[0029] Figure 1 This is an exploded view of a valve according to an embodiment of the present invention.

[0030] Figure 2 yes Figure 1 Assembly diagram of the valve in the illustrated embodiment.

[0031] Figure 3 yes Figure 2 A cross-sectional view of the valve in the illustrated embodiment.

[0032] Figure 4 yes Figure 1 A perspective view of the rear housing in the illustrated embodiment.

[0033] Figure 5 yes Figure 1 A perspective view of the front housing in the illustrated embodiment.

[0034] Reference numerals: 100, valve; 1, front housing; 11, front passage; 111, first section; 1111, bottom wall of the first section; 112, second section; 1121, cone; 1122, bottom wall of the second section; 113, outlet; 114, stop; 2, rear housing; 21, rear passage; 211, inner section; 2111, bottom wall of the inner section; 212, middle section; 2121, rod hole; 213, outer section; 214, inlet; 215, crossbeam; 3, inner valve seat; 4, valve core; 41, positioning rod; 5, drive element; 6, outer valve seat; 7, valve cover; 8, flange; 9, sealing ring; X, axial direction. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the various embodiments of this invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this invention to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0036] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0037] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative of the essential spirit of the technical solution of the present invention.

[0038] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0039] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0040] In the following description, in order to clearly demonstrate the structure and working method of the present invention, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0041] This invention relates to a valve 100, such as Figure 1 and Figure 2 As shown, the valve 100 includes a front housing 1, a rear housing 2, an inner valve seat 3, a valve core 4, a drive component 5, an outer valve seat 6, a valve cover 7, a sealing ring 9, and a flange 8.

[0042] The front housing 1 has a front channel 11 extending along an axial direction X, and the rear housing 2 has a rear channel 21 extending along an axial direction X. The rear end of the front housing 1 along the axial direction X and the front end of the rear housing 2 along the axial direction X are fixedly connected. The connection method between the front housing 1 and the rear housing 2 can be adhesive, welding, snap-fit, etc. The present invention does not limit the specific connection method between the front housing 1 and the rear housing 2.

[0043] The front channel 11 of the front housing 1 and the rear channel 21 of the rear housing 2 are connected along the axial direction X to form a liquid flow channel. The rear end opening of the rear housing 2 is the inlet 214, while the front end opening of the front housing 1 is the outlet 113. Liquid can flow into the liquid flow channel from the inlet 214 of the rear housing 2 and flow out from the outlet 113 of the front housing 1.

[0044] The rear channel 21 of the rear housing 2 is also provided with a valve core mounting position. The valve core 4 has a flat structure and is installed in the rear channel 21 of the rear housing 2, and the bottom end of the valve core 4 is rotatably connected to the valve core mounting position. The inner valve seat 3 is located in the rear channel 21 and is closer to the rear end of the rear housing 2 than the valve core 4. The inner valve seat 3 is sealed to the inner wall of the rear channel 21. The driving member 5 penetrates the top wall of the rear housing 2 and is connected to the top end of the valve core 4. The driving member 5 can drive the valve core 4 to rotate. After the valve core 4 rotates, it can squeeze and contact the inner valve seat 3 to close the rear channel 21 or drive the valve core 4 to separate from the inner valve seat 3 to open the rear channel 21, thereby realizing the opening and closing of the liquid flow channel.

[0045] The outer front end of the front housing 1 has a threaded opening for matching conventional filling ports or other commonly used equipment. This means the threaded opening is of a standard size, and the overall size of the front end of the front housing 1 cannot be changed. The first section 111 of the front housing 1 is located at the front end, and its size also remains relatively constant. However, the valve core 4 has a flat structure. To facilitate its opening and closing within the liquid flow channel, the second section 112 of the front housing 1 and the rear channel 21 of the rear housing 2 need sufficient space to accommodate the valve 100. Therefore, the space at the second end 112 of the front housing 1 and the rear channel 21 of the rear housing 2 is generally designed to be larger than that at the first section 111. Consequently, after the front housing 1 and rear housing 2 of the valve 100 are connected, the overall structure, viewed from the outside, is a gourd-shaped structure, larger in the middle but smaller at the front and rear ends. After the liquid flows out of the front housing 1 from the rear housing 2, due to the small size of the outlet 113 of the front housing 1, liquid often accumulates at the bottom, making cleaning very inconvenient.

[0046] The front passage 11 has a first segment 111 and a second segment 112 along the axial direction X, as follows: Figure 5 As shown, the first segment 111 is near the front end, and the second segment 112 is near the rear end. Within the rear channel 21, along the axial direction X, the portion at the front end of the valve core mounting position is the inner segment 211, the portion at the rear end of the valve core mounting position is the rear segment, and the valve core mounting position is located in the middle segment 212. The inner segment 211, the middle segment 212, and the outer segment 213 are sequentially connected. The inner segment 211 abuts against the second segment 112 of the front housing 1, and the bottom wall 2111 of the inner segment, the bottom wall 1122 of the second segment, and the bottom wall 1111 of the first segment decrease sequentially. After the valve core 4 is opened, the liquid flows into the liquid channel from the inlet 214 of the rear housing 2 and then flows out through the outlet 113. Since the bottom wall 2111 of the inner section, the bottom wall 1122 of the second section and the bottom wall 1111 of the first section are successively lower, the liquid can flow smoothly from the valve core 4 to the inner section 211, the second section 112 to the first section 111, and then flow out from the outlet 113 of the first section 111. There will be no liquid accumulation and it is easy to clean.

[0047] The front end of the front housing 1 is threaded, designed to match conventional filling ports or equipment; the size of this threaded opening remains essentially unchanged. The valve core 4, however, has a flat structure. To facilitate the opening and closing of the valve core 4 within the liquid flow channel, the flow channel requires sufficient space. Therefore, when the front housing 1 and rear housing 2 of the valve 100 are connected, the overall structure, viewed from the outside, resembles a gourd, wider in the middle and narrower at the front and rear ends. After the liquid flows from the rear housing 2 to the front housing 1, due to the small size of the outlet 113 of the front housing 1, liquid often accumulates at the bottom, making cleaning very inconvenient.

[0048] Therefore, the present invention changes the shape of the bottom wall of the front housing 1 and the rear housing 2, setting the bottom wall of the front housing 1 to be lower than the bottom wall of the rear housing 2 or flush with the bottom wall of the rear housing 2, so as to facilitate liquid outflow and cleaning.

[0049] As a preferred embodiment, such as Figure 3 As shown, the bottom wall 2111 of the inner section and the bottom wall 1122 of the second section are mutually abutting planes. The first section 111 is annular, and the bottom walls 2111 of the inner section, 1122 of the second section, and the bottom wall of the first section 111 are all flush.

[0050] In existing designs, the inner section 211 typically has a circular inner wall, and the bottom wall of this circular inner wall is lower than the bottom wall of the front housing 1, making it prone to liquid accumulation. To prevent liquid accumulation, this invention adds a crossbeam 215 to the circular inner wall, such as... Figure 4 As shown, the top surface of the crossbeam 215 and the top of the annular inner wall together form the inner wall of the inner section 211, and the top surface of the crossbeam 215 is a plane, which is the bottom wall 2111 of the aforementioned inner section. Therefore, the top surface of the crossbeam 215 is higher than the bottom wall of the annular inner wall in existing designs, which can prevent liquid accumulation.

[0051] Furthermore, in existing designs, the inner wall of the second section 112 is generally a cone 1121, that is, a cone 1121 that gradually decreases in size from the rear end of the rear housing 2 to the first section 111. The bottom wall of this cone 1121 near the rear end is lower than the bottom wall 1111 of the first section. Therefore, during the process of liquid flowing from the rear housing 2 into the front housing 1, liquid will accumulate in the second section 112. Moreover, because the bottom wall 1122 of the second section is lower than that of the first section 111, it is not easy to clean the accumulated liquid. This invention designs a baffle 114 inside the cone 1121. Figure 5 In the illustrated embodiment, the baffle 114 is located at the bottom of the cone 1121 and its top surface is flat. The top surface of the baffle 114 and the inner wall of the top of the cone 1121 form the inner wall of the second section 112, while the top surface of the baffle 114 is the bottom wall 1122 of the second section. The top surface of the baffle 114 is also higher than the bottom wall of the cone 1121, which can prevent liquid from accumulating on the bottom wall of the cone 1121.

[0052] The top surface of the inner baffle 114 in the second section 112 is flush with the top surface of the crossbeam 215. After the liquid flows in from the rear housing 2, it flows through the crossbeam 215 and the baffle 114 and can flow out from the first section 111. Since the top surface of the crossbeam 215, the top surface of the baffle 114 and the bottom wall 1111 of the first section are flush with each other, the liquid can flow out smoothly from the first section 111 and will not flow into the bottom wall of the annular inner wall and the bottom wall of the cone 1121, and it is also easy to clean.

[0053] In addition, although the bottom wall 1122 of the second section is a plane, the top wall of the second section 112 is still the top of the cone 1121, that is, the shape of a truncated cone. The truncated cone can be regarded as the bottom wall 1122 of the second section extending circumferentially, so that the overall size of the inner wall of the second section 112 gradually decreases from the rear end of the front shell 1 to the first section 111, which facilitates the smooth discharge of liquid.

[0054] The first segment 111 is annular with a center. The bottom wall 1122 of the second segment is flush with the first segment 111. The top wall of the second segment 112 is a cone 1121, meaning that the top of the highest point of the second segment 112 is higher than the top wall of the first segment 111. This makes the center of the second segment 112 in the vertical direction higher than the center of the first segment 111. In other words, the addition of the stop block 114 causes the center of the second segment 112 in the vertical direction to move upward.

[0055] As an optional solution, the top surface of the crossbeam 215 of the inner section 211 can be higher than the top surface of the stop block 114, or the top surface of the stop block 114 can be higher than the bottom wall 1111 of the first section. That is, the bottom wall 2111 of the inner section, the bottom wall 1122 of the second section, and the bottom wall 1111 of the first section can be lowered or level with each other to meet the requirements. For example, the bottom wall 2111 of the inner section can be higher than or equal to the bottom wall 1122 of the second section, while the bottom wall 1122 of the second section can be higher than or level with the bottom wall 1111 of the first section. In other words, the bottom wall 2111 of the inner section, the bottom wall 1122 of the second section, and the bottom wall 1111 of the first section can form a stepped descending form.

[0056] For example, the bottom wall 2111 of the inner section, the bottom wall 1122 of the second section, and the bottom wall 1111 of the first section are all curved or inclined surfaces that gradually decrease from the rear end to the front end. The front end of the bottom wall 2111 of the inner section is higher than or flush with the bottom wall of the rear end of the second section 112. The bottom wall of the front end of the second section 112 is flush with or higher than the bottom wall of the rear end of the first section 111. In other words, the bottom wall 2111 of the inner section, the bottom wall 1122 of the second section and the bottom wall 1111 of the first section gradually decrease. The three of them form a curved or inclined surface that gradually decreases from the rear end to the front end, which also facilitates the flow of liquid from the rear shell 2 to the front shell 1 and prevents liquid accumulation.

[0057] Therefore, both the bottom wall 1122 of the second segment and the bottom wall 1111 of the first segment can be flat, or they can be flat surfaces that gradually descend from the rear end to the front end. There cannot be any downwardly recessed parts. Furthermore, the bottom wall 2111 of the inner segment cannot be lower than the bottom wall 1122 of the second segment, and the bottom wall 1122 of the second segment cannot be lower than the bottom wall 1111 of the first segment, to prevent liquid accumulation. It should be understood that in other embodiments, the bottom wall 2111 of the inner segment is flat, while the bottom wall 1122 of the second segment is a curved surface that gradually descends from the rear end to the front end, and the bottom wall 1122 of the second segment is lower than the bottom wall 2111 of the inner segment. The inner wall of the first segment 111 is annular, and the bottom wall at the rear end of the first segment 111 connects with the bottom wall at the front end of the second segment 112, meaning the shape of the bottom wall at the rear end of the first segment 111 matches the shape of the bottom wall at the front end of the second segment 112. In another embodiment, the bottom wall 2111 of the inner segment is curved, and the bottom wall 1122 of the second segment is flat and lower than the bottom wall 2111 of the inner segment.

[0058] The bottom wall 2111 of the inner section, the bottom wall 1122 of the second section, and the bottom wall 1111 of the first section all decrease sequentially from the rear end to the front end. This includes intermittent decreases in the bottom wall 2111 of the inner section, the bottom wall 1122 of the second section, and the bottom wall 1111 of the first section. For example, the bottom wall 2111 of the inner section is higher than the bottom wall 1122 of the second section, but the bottom wall 1122 of the second section is flush with the bottom wall 1111 of the first section. It also includes cases where the bottom wall 2111 of the inner section, the bottom wall 1122 of the second section, and the bottom wall 1111 of the first section decrease slowly. It can also include cases where the bottom wall 2111 of the inner section, the bottom wall 1122 of the second section, and the bottom wall 1111 of the first section gradually decrease or slowly decrease from their respective rear ends to their front ends. There will be no pits for fluid accumulation on the bottom wall 2111 of the inner section, the bottom wall 1122 of the second section, and the bottom wall 1111 of the first section. In other words, the essence of the present invention is to raise the bottom wall 1122 of the second section of the front housing 1 and the bottom wall 2111 of the inner section of the rear housing 2 to a position not lower than the bottom wall 1111 of the first section, so as to facilitate liquid discharge and cleaning of the internal space of the liquid flow channel.

[0059] In this invention, the front end refers to the end near the outlet 113, and the rear end refers to the end near the inlet 214 of the rear housing 2. The top end and bottom end are respectively... Figure 3 The top and bottom ends in the illustrated embodiment.

[0060] The bottom end of the valve core 4 is provided with a positioning rod 41, and the valve core mounting position is provided with a rod hole 2121 for inserting the positioning rod 41. The positioning rod 41 of the valve core 4 extends into the rod hole 2121, and the driving member 5 drives the valve core 4 to rotate around the axis of the positioning rod 41 to open or close the rear channel 21.

[0061] The front end face of the front housing 1 has an annular groove for accommodating the outer valve seat 6, and the annular groove extends circumferentially around the front end of the front housing 1. The outer valve seat 6 is located within the annular groove and slightly protrudes from the front end of the annular groove. The valve cover 7 operably seals the front end of the front housing 1 and is threadedly connected to the front housing 1. The inner wall of the valve cover 7 seals against the outer valve seat 6, thereby sealing the valve cover 7 and the front housing 1. The valve cover 7 can be removed from the front housing 1, that is, removed when the valve 100 is open for use, and covered when the valve 100 is closed and not in use.

[0062] The rear end of the rear housing 2 is sealed to the flange 8 by a sealing ring 9. The sealing ring 9 is located at the rear end of the rear housing 2 and between the flange 8 and the inner wall, thereby making the flange 8 and the rear end of the rear housing 2 sealed together.

[0063] The valve core 4 has a guide post at its top, and a guide groove with an opening facing the valve core 4 is provided on the rear housing 2. The guide groove extends along the axial direction X of the rear channel 21. The drive component 5 can drive the valve core 4 to rotate, so that the guide post is aligned with the opening of the guide groove. The drive component 5 drives the end of the valve core 4 connected to it to move axially toward the inner valve seat 3, allowing the guide post to insert into the guide groove. Continuing to rotate the drive component 5, the drive component 5 will not drive the valve core 4 to rotate, but will instead cause the valve core 4 to shift toward the inner valve seat 3 along the extension direction of the rear channel 21, allowing the guide post to insert into the guide groove, and the valve core 4 and the inner valve seat 3 to be tightly fitted together to achieve a seal. When the valve core 4 moves axially toward or away from the inner valve seat 3, the part of the valve core 4 connected to the drive component 5 can move, causing the entire valve core 4 to tilt slightly toward or away from the inner valve seat 3, so that the valve core 4 can be tightly fitted to the inner valve seat 3, resulting in a better valve closure effect. The cooperation method between the driving component 5 and the valve core 4 of the present invention can be referred to in application numbers 202310511372X and 2023105113804. It should be understood that the driving direction of the driving component 5 and the valve core 4 of the present invention is not limited to the embodiments in 202310511372X and 2023105113804, and the valve core 4 can also be driven to move in other ways.

[0064] The outlet 113 of the valve 100 of the present invention can also be used as the inlet of liquid. For example, when filling is required, the outlet 113 of the valve 100 can also be used as the inlet. In this case, after the liquid enters through the outlet 113 of the front housing 1, it can also prevent the liquid from accumulating in the front housing 1 and the rear housing 2, and facilitate the cleaning of the internal liquid.

[0065] The present invention changes the bottom wall height of the front channel 11 of the front housing 1 and the bottom wall height of the rear channel 21 of the rear housing 2, and makes the bottom wall height of the inner section 211 of the rear channel 21 higher than or equal to the bottom wall height 1122 of the second section of the front channel 11, while the bottom wall height of the second section 1122 is higher than or equal to the bottom wall height of the first section 1111, which can effectively prevent liquid accumulation in the front housing 1 or the rear housing 2.

[0066] The preferred embodiments of the present invention have been described in detail above, but it should be understood that, if necessary, aspects of the embodiments can be modified to utilize aspects, features, and concepts from various patents, applications, and publications to provide other embodiments.

[0067] In light of the detailed description above, these and other changes can be made to the embodiments. Generally, the terminology used in the claims should not be considered limited to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments together with the full scope of equivalents enjoyed by these claims.

[0068] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. A valve, characterized in that, include: A front housing having a front channel extending along an axial direction, the front channel having a first segment and a second segment along the axial direction; The rear housing has its front end connected to the rear end of the front housing and has a rear channel extending along the axial direction. The rear channel communicates with the front channel, and the bottom wall of the rear channel has a valve core mounting position. The portion of the rear channel located at the front end of the valve core mounting position is an inner section. The bottom wall of the inner section, the bottom wall of the second section, and the bottom wall of the first section are successively lower; or, the bottom wall of the inner section, the bottom wall of the second section, and the bottom wall of the first section are located on the same plane. An inner valve seat is disposed within the rear channel and is sealed to the inner wall of the rear channel. Valve core, the valve core being located within the rear channel and rotatably connected to the valve core mounting position; and A drive unit, which extends through the rear housing, is used to drive the valve core to press against the inner valve seat to close the rear channel or to drive the valve core to separate from the inner valve seat to open the rear channel; The size of the second segment gradually decreases from the rear end of the front housing to the first segment.

2. The valve according to claim 1, characterized in that, The bottom wall of the inner section, the bottom wall of the second section, and the bottom wall of the first section gradually decrease in height.

3. The valve according to claim 1, characterized in that, The bottom wall of the inner section is flat.

4. The valve according to claim 1 or 3, characterized in that, The bottom wall of the second segment is a plane.

5. The valve according to claim 4, characterized in that, The bottom wall of the second segment is flush with the bottom wall of the first segment.

6. The valve according to claim 5, characterized in that, The top wall of the second segment is formed by extending the bottom wall of the second segment circumferentially, and the top wall of the second segment is a truncated cone.

7. The valve according to claim 1, characterized in that, The first segment is circular; the center of the second segment along the vertical direction is higher than the center of the first segment.

8. The valve according to claim 1, characterized in that, The valve core has a flat structure, and a positioning rod is provided at the bottom end of the valve core; the valve core mounting position is provided with a rod hole for inserting the positioning rod; the driving member drives the valve core to rotate around the axis of the positioning rod to open or close the rear channel.

9. The valve according to claim 1, characterized in that, The valve also includes: An outer valve seat, the outer valve seat being disposed at the front end of the front housing; and A valve cover that operably seals the front end of the front housing and abuts against the outer valve seat.

10. The valve according to claim 1, characterized in that, The valve also includes a flange, which is sealed to the rear end of the rear housing.

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