Low-flow-resistance quick connecting valve group for compact space

Abstract

The invention discloses a low-flow-resistance quick connection valve group for a compact space. The low-flow-resistance quick connection valve group comprises a left valve body, a right valve body and a U-shaped bolt, the end, facing the right valve body, of the left valve body is provided with an inner connecting part with an annular groove in the periphery. An outer connecting part sleeving the inner connecting part is arranged at one end, facing the left valve body, of the right valve body; and the U-shaped bolt penetrates out of the outer connecting part and is clamped into the annular groove so as to limit the axial movement of the inner connecting part and the outer connecting part. A traditional screw reinforcing mode is replaced with plug pin connection, the operation that a bolt needs to penetrate through a circumferential centering bolt hole when the left valve body and the right valve body are connected is omitted, the installation angle of the U-shaped plug pin relative to the left valve body can be flexibly rotated and adjusted according to the space condition, the requirement for the installation space is lowered, quick connection and disassembly of the valve assembly are achieved, and the service life of the valve assembly is prolonged. The assembly efficiency and the maintenance convenience are remarkably improved, and meanwhile the connection reliability and the sealing performance are guaranteed. The valve bank is compact in structure, easy and convenient to operate and particularly suitable for scenes needing frequent disassembly and assembly or quick response in a compact space.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to a low-flow-resistance quick connection valve group for compact space. BACKGROUND

[0002] The valve group is widely used in the fields of construction, petroleum, chemical industry, metallurgy, papermaking, etc., and can balance pipeline pressure, regulate pipeline flow, control medium direction, etc., and plays an important role in water treatment, heating, cooling, air conditioning, fire fighting, oil and gas transportation, etc. The existing valve group usually adopts threaded connection or flange connection, which has the problems of high disassembly and assembly difficulty and low disassembly and assembly efficiency for the fluid control system which needs to be frequently disassembled, maintained and replaced and installed in compact space. SUMMARY

[0003] The present application provides a low-flow-resistance quick connection valve group for compact space to solve the technical problems of low disassembly and assembly efficiency and complex operation of the existing valve group applied to compact space.

[0004] In order to achieve the above-mentioned purpose, the technical scheme of the present application is as follows: A low-flow-resistance quick connection valve group for compact space, comprising: a left valve body, a right valve body and a U-shaped bolt; the left valve body is provided with an inner connecting part at one end facing the right valve body, and an annular groove is formed in the outer periphery of the inner connecting part; the right valve body is provided with an outer connecting part at one end facing the left valve body, and the outer connecting part is sleeved on the inner connecting part; the U-shaped bolt passes through the outer connecting part and is clamped into the annular groove, thereby limiting the relative movement of the inner connecting part and the outer connecting part along the axial direction.

[0005] Preferably, two straight grooves are formed in the inner wall of the outer connecting part, the straight grooves are arranged along the chord line of the outer connecting part which is not a diameter, and the two ends of the straight grooves penetrate through the outer peripheral surface of the outer connecting part, the two straight grooves are symmetrical about the plane passing through the axis of the outer connecting part, and the straight grooves are correspondingly arranged with the annular groove; the U-shaped bolt passes through the two straight grooves and is clamped into the annular groove.

[0006] Preferably, the cross sections of the annular groove, the straight groove and the U-shaped bolt are rectangular or square.

[0007] Preferably, the opening of the U-shaped bolt gradually expands outward.

[0008] Preferably, a left valve cavity is arranged in the left valve body, a left half-ball valve core and a left valve seat are arranged in the left valve cavity, and the left half-ball valve core and the left valve seat are in contact and fit to form a sealing pair; a left valve rod is rotatably arranged on the left valve body, the left half-ball valve core is fixedly arranged on the left valve rod, and the center line of the left valve rod passes through the ball center of the left half-ball valve core. The right valve body is internally provided with a right valve cavity, the right valve cavity is internally provided with a right half-ball valve core and a right valve seat, the right half-ball valve core and the right valve seat are in contact and fit to form a sealing pair; the right valve body is further rotatably provided with a right valve rod, the right half-ball valve core is fixed on the right valve rod and the center line of the right valve rod passes the ball center of the right half-ball valve core.

[0009] Preferably, the inner wall of the inner connecting part is provided with a first step part, the left valve seat abuts on the side of the first step part away from the right valve body, and the left half-ball valve core is located on the side of the left valve seat away from the first step part. The inner wall of the outer connecting part is provided with a second step part, the right valve seat abuts on the side of the second step part away from the left valve body, and the right half-ball valve core is located on the side of the right valve seat away from the second step part.

[0010] Preferably, a sealing gasket is arranged between the end face of the inner connecting part and the second step part.

[0011] Preferably, the outer periphery of the inner connecting part is provided with a third step part, and the end face of the outer connecting part abuts on the third step part.

[0012] Preferably, the left half-ball valve core is provided with a left through hole in the axial direction of the left valve body, the right half-ball valve core is provided with a right through hole in the axial direction of the right valve body, the left half-ball valve core is a spherical body after cutting off 1 / 3 of the ball diameter in the axial direction of the left through hole, and the right half-ball valve core is a spherical body after cutting off 1 / 3 of the ball diameter in the axial direction of the right through hole.

[0013] Preferably, one end of the left valve rod and the right valve rod is provided with a wrench groove for connecting a wrench.

[0014] Advantages: The low-flow-resistance quick connection valve group for a compact space disclosed in the present application innovatively adopts a latch connection instead of a traditional screw reinforcement method, thereby eliminating the need to pass the bolts through the circumferential centering bolt holes when connecting the left valve body and the right valve body, and the installation angle of the U-shaped latch relative to the left valve body can be flexibly rotated and adjusted according to the actual situation of the space, thereby reducing the requirement for the installation space, realizing the quick connection and disassembly of the valve assembly, significantly improving the assembly efficiency and maintenance convenience, and meanwhile ensuring the reliability and sealing performance of the connection. The valve group structure of the present application is compact and easy to operate, and is particularly suitable for application scenarios that need to be frequently disassembled or quickly responded in a compact space. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, a brief introduction will be given below to the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative labor under the premise of not deviating from the concept of the present application.

[0016] Figure 1Structure diagram of low flow resistance quick connection valve group for compact space disclosed by the application; Figure 2 Side view of low flow resistance quick connection valve group for compact space disclosed by the application; Figure 3 Sectional view in figure A-A; Figure 4 Structure diagram of left valve body of low flow resistance quick connection valve group for compact space disclosed by the application; Figure 5 Sectional view of left valve body of low flow resistance quick connection valve group for compact space disclosed by the application; Figure 6 Structure diagram of right valve body of low flow resistance quick connection valve group for compact space disclosed by the application; Figure 7 Sectional view of right valve body of low flow resistance quick connection valve group for compact space disclosed by the application; Figure 8 Structure diagram of left half ball valve core of low flow resistance quick connection valve group for compact space disclosed by the application; Figure 9 Structure diagram of left valve rod of low flow resistance quick connection valve group for compact space disclosed by the application; Figure 10 Sectional view of left valve rod of low flow resistance quick connection valve group for compact space disclosed by the application; Figure 11 Structure diagram of U-shaped bolt of low flow resistance quick connection valve group for compact space disclosed by the application; Figure 12 Front view of U-shaped bolt of low flow resistance quick connection valve group for compact space disclosed by the application.

[0017] In the figure: 1, left valve body; 11, inner connecting part; 111, annular groove; 112, first step part; 113, third step part; 12, left valve cavity; 13, valve rod mounting protrusion; 2, right valve body; 21, outer connecting part; 211, straight groove; 212, second step part; 22, right valve cavity; 3, U-shaped bolt; 31, U-shaped part; 32, arc segment; 41, left half ball valve core; 411, positioning plane; 42, left valve seat; 43, left valve rod; 431, round rod segment; 432, first prism segment; 433, cylindrical segment; 434, second prism segment; 51, right half ball valve core; 52, right valve seat; 53, right valve rod; 6, sealing gasket; 7, left valve rod gland; 8, wrench groove. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without any creative efforts shall fall within the protection scope of the present invention.

[0019] A low-flow-resistance quick-connect valve group for a compact space, in combination with Figures 1-12 As shown, it includes: a left valve body 1, a right valve body 2, and a U-shaped pin 3; an inner connection part 11 is provided at one end of the left valve body 1 facing the right valve body ②, and an annular groove 111 is formed on the outer periphery of the inner connection part 11; an outer connection part 21 is provided at one end of the right valve body 2 facing the left valve body 1, and the outer connection part 21 is sleeved on the inner connection part 11; the U-shaped pin 3 penetrates through the outer connection part 21 and is clamped into the annular groove 111, thereby restricting the relative axial movement of the inner connection part 11 and the outer connection part 21. This application innovatively uses a pin connection to replace the traditional screw reinforcement method, eliminating the operation of passing bolts through the circumferentially centered bolt holes when connecting the left valve body 1 and the right valve body 2. Moreover, the installation angle of the U-shaped pin 3 relative to the left valve body 1 can be flexibly rotated and adjusted according to the actual situation of the space, reducing the requirements for the installation space, achieving the quick connection and disassembly of the valve components, significantly improving the assembly efficiency and maintenance convenience, and at the same time ensuring the connection reliability and sealing performance. The valve group of this application has a compact structure and simple operation, and is especially suitable for application scenarios that require frequent disassembly and assembly or quick response in a compact space.

[0020] Preferably, two linear grooves 211 are formed on the inner wall of the outer connection part 21. The linear grooves 211 are arranged along the non-diameter chord of the outer connection part 21, and both ends of the linear grooves 211 penetrate through the outer peripheral surface of the outer connection part 21. The two linear grooves 211 are symmetric about the plane passing through the axis of the outer connection part 21, and the linear grooves 211 are arranged corresponding to the annular groove 111; the U-shaped pin 3 penetrates through the two linear grooves 211 and is clamped into the annular groove 111. By inserting the U-shaped pin 3 into the two linear grooves 211, a part of the U-shaped pin 3 is clamped into the annular groove 111, and the other part is clamped into the linear groove 211. Moreover, the U-shaped pin 3 is also inserted into the through hole formed by the penetration of the linear grooves 211, so that the left valve body 1 and the right valve body 2 can be quickly and reliably connected together, making the left valve body 1 and the right valve body 2 tightly connected axially.

[0021] Preferably, the cross-sections of the annular groove 111, the linear groove 211, and the U-shaped pin 3 are rectangular or square. This cross-sectional shape can ensure that the U-shaped pin 3 is reliably clamped into the linear groove 211 and the annular groove 111, enabling the U-shaped pin 3 to withstand a large axial shear force, thereby ensuring that the left valve body 1 and the right valve body 2 are more tightly and reliably connected axially.

[0022] Preferably, the opening of the U-shaped pin 3 gradually expands outward, and the width of the opening of the U-shaped pin 3 becomes larger and larger. It can achieve self-locking by utilizing the deformation generated after it is inserted into the two straight grooves 211, so as to avoid loosening due to vibration or other reasons during use.

[0023] Specifically, the U-shaped pin 3 includes a U-shaped portion 31 and an arc-shaped segment 32. Each of the two straight segments of the U-shaped portion 31 is connected to an arc-shaped segment 32. The distance between the two arc-shaped segments 32 increases as they move away from the U-shaped portion 31, meaning the arc-shaped segments 32 are concave inwards. In this embodiment, the central angle corresponding to the arc-shaped segment 32 is controlled between 6° and 7°, and the ratio of the radius of the outer arc surface of the arc-shaped segment 32 to the distance between the outer surfaces of the two straight segments of the U-shaped portion 31 is controlled between 4.4 and 4.6. This ensures that the U-shaped pin 3 can be quickly inserted into and removed from the straight groove 211, while also achieving self-locking through its deformation.

[0024] Preferably, the left valve body 1 is provided with a left valve cavity 12, and the left valve cavity 12 is provided with a left hemispherical valve core 41 and a left valve seat 42. The left hemispherical valve core 41 and the left valve seat 42 are in contact and fit together to form a sealing pair. The left valve body 1 is also rotatably provided with a left valve stem 43, and the left hemispherical valve core 41 is fixed on the left valve stem 43 and the center line of the left valve stem 43 passes through the center of the left hemispherical valve core 41. The right valve body 2 is provided with a right valve cavity 22, and the right valve cavity 22 is provided with a right hemispherical valve core 51 and a right valve seat 52. The right hemispherical valve core 51 and the right valve seat 52 are in contact and cooperate to form a sealing pair. The right valve body 2 is also rotatably provided with a right valve stem 53. The right hemispherical valve core 51 is fixed on the right valve stem 53 and the center line of the right valve stem 53 passes through the center of the ball of the right hemispherical valve core 51.

[0025] The structure of this application can ensure a sealing effect. More importantly, the left hemisphere valve core 41 can be closed by controlling the left valve stem 43 and the right hemisphere valve core 51 can be closed by controlling the right valve stem 53. This allows the valve assembly to be disconnected while retaining the medium in both pipelines, preventing medium leakage and air ingress. It can quickly restore the function of the pipeline in transporting the medium, and is especially suitable for applications with frequent disassembly or rapid response in compact spaces.

[0026] Preferably, the inner wall of the inner connection part 11 is provided with a first step part 112, the left valve seat 42 abuts against the side of the first step part 112 away from the right valve body 2, and the left hemispherical valve core 41 is located on the side of the left valve seat 42 away from the first step part 112. The inner wall of the outer connection part 21 is provided with a second step part 212. The right valve seat 52 abuts against the side of the second step part 212 away from the left valve body 1, and the right hemisphere valve core 51 is located on the side of the right valve seat 52 away from the second step part 212.

[0027] This application positions the left valve seat 42 using the first step 112 and the right valve seat 52 using the second step 212, so that the left valve seat 42 and the right valve seat 52 are located in the middle of the valve assembly, making the whole structure more compact. Furthermore, a large cavity is not formed between the inner connection part 11 and the outer connection part 21, reducing the resistance generated by the flow of the medium and preventing excessive leakage of the medium when the connection is disconnected.

[0028] Preferably, a sealing gasket 6 is provided between the end face of the inner connecting part 11 and the second step part 212 to ensure the sealing of the connection between the inner connecting part 11 and the outer connecting part 21.

[0029] Preferably, the outer periphery of the inner connecting part 11 is provided with a third step part 113, and the end face of the outer connecting part 21 abuts against the third step part 113. The third step part 113 is used to position the outer connecting part 21, ensuring that the straight groove 211 corresponds to the annular groove 111. At the same time, the end face of the inner connecting part 11 presses the sealing gasket 6 onto the second step part 212.

[0030] Preferably, the left hemisphere valve core 41 has a left through hole along the axial direction of the left valve body 1, and the right hemisphere valve core 51 has a right through hole along the axial direction of the right valve body 2. The left hemisphere valve core 41 is a ball with 1 / 3 of its diameter removed along the axial direction of the left through hole, and the right hemisphere valve core 51 is a ball with 1 / 3 of its diameter removed along the axial direction of the right through hole. This structure of the left hemisphere valve core 41 and the right hemisphere valve core 51 reduces the valve core volume and increases the flow space within the valve body while ensuring sealing and support, thus significantly reducing the resistance generated by the flow of the medium.

[0031] Specifically, a positioning plane 411 is machined on the left hemisphere valve core 41, and the positioning plane 411 is perpendicular to the center line of the left valve stem 43. The left valve stem 43 includes, in sequence: a round rod segment 431, a first prismatic segment 432, a cylindrical segment 433, and a second prismatic segment 434; a polygonal through hole is machined at the positioning plane 411 of the left hemisphere valve core 41, which passes through the left through hole. The first prismatic segment 432 cooperates with the polygonal through hole, so that the rotation of the first prismatic segment 432 drives the left hemisphere valve core 41 to rotate; a round hole is also opened on the left hemisphere valve core 41, which is opposite to the polygonal through hole. The round rod segment 431 passes through the left through hole and the round hole and is rotatably connected to the left valve body 1; the cylindrical segment 433 cooperates with the inner hole of the valve stem mounting protrusion 13 on the left valve body 1, and the second prismatic segment 434 passes through the inner hole of the valve stem mounting protrusion 13. A left valve stem 43 rotation angle control structure is mounted on the valve stem mounting protrusion 13. This structure is existing technology in the valve field and will not be described in detail here. After the left valve stem cap 7 of the angle control structure is tightened onto the valve stem mounting protrusion 13, it presses against the end face of the cylindrical section 433, thereby positioning the left valve stem 43. This structure facilitates the assembly, production, use, and maintenance of the left hemisphere valve core 41 and the left valve stem 43. The specific structure of the right valve stem 53 is the same as that of the left valve stem 43, and the mounting structure of the right valve stem 53 and the right hemisphere valve core 51 is also the same as that of the left valve stem 43 and the left hemisphere valve core 41, and will not be described in detail here.

[0032] Preferably, one end of both the left valve stem 43 and the right valve stem 53 is provided with a wrench groove 8 for connecting a wrench. The wrench groove 8 is located at the center of the second prism section 434. The wrench groove 8 allows the fixed position of the wrench for rotating the left valve stem 43 and the right valve stem 53 to move inward, which can reduce the overall size of the valve assembly and make it more suitable for arrangement in compact spaces.

[0033] The working principle of the device in this application is as follows: When actually connecting the valve assembly, align the left and right valve bodies axially, insert the inner connecting part of the left valve body into the outer connecting part of the right valve body, and insert the U-shaped pin into the straight groove of the right valve body, thus locking it into the annular groove. This connects the left and right valve bodies into one unit. Use a square wrench inserted into the wrench slots of the left and right valve stems respectively to rotate the two valve stems and control the opening and closing states of the left and right hemisphere valve cores. When disassembling the valve assembly, first close the left and right hemisphere valve cores, then pull out the U-shaped pin and pull axially to separate the left and right valve bodies, achieving disconnection while retaining the pipeline medium.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A low flow resistance quick connect valve block for compact spaces, characterized by, The utility model relates to a valve body, and particularly relates to a valve body with a U-shaped pin. The outer connecting part (21) is provided with two straight grooves (211) in the inner wall, the straight grooves (211) are arranged along the chord line of the outer connecting part (21) and the two ends of the straight grooves (211) penetrate the outer circumferential surface of the outer connecting part (21), the two straight grooves (211) are symmetric about the plane passing through the axis of the outer connecting part (21), and the straight grooves (211) are arranged in correspondence with the annular groove (111); the U-shaped pin (3) penetrates the two straight grooves (211) and is clamped into the annular groove (111).

2. A low flow resistance quick connect valve block for compact spaces according to claim 1, characterized in that, The cross sections of the annular groove (111), the straight grooves (211) and the U-shaped pin (3) are rectangular or square.

3. A low flow resistance quick connect valve block for compact spaces according to claim 2, characterized in that, The opening of the U-shaped pin (3) gradually expands outward.

4. A low flow resistance quick connect valve block for compact spaces according to claim 2, wherein, The left valve body (1) is provided with a left valve cavity (12) in the inside, the left valve cavity (12) is provided with a left half-ball valve core (41) and a left valve seat (42) in the inside, the left half-ball valve core (41) and the left valve seat (42) are in contact and cooperation to form a sealing pair, the left valve body (1) is further provided with a left valve rod (43) which can rotate, the left half-ball valve core (41) is fixed on the left valve rod (43) and the center line of the left valve rod (43) passes through the ball center of the left half-ball valve core (41); 5. A low flow resistance quick connect valve block for compact spaces according to claim 1, wherein, The right valve body (2) is provided with a right valve cavity (22) in the inside, the right valve cavity (22) is provided with a right half-ball valve core (51) and a right valve seat (52) in the inside, the right half-ball valve core (51) and the right valve seat (52) are in contact and cooperation to form a sealing pair, the right valve body (2) is further provided with a right valve rod (53) which can rotate, the right half-ball valve core (51) is fixed on the right valve rod (53) and the center line of the right valve rod (53) passes through the ball center of the right half-ball valve core (51). The inner wall of the inner connecting part (11) is provided with a first step part (112), the left valve seat (42) is abutted on the side of the first step part (112) which is away from the right valve body (2), and the left half-ball valve core (41) is located on the side of the left valve seat (42) which is away from the first step part (112); 6. A low flow resistance quick connect valve block for compact spaces according to claim 5, characterized in that, The inner wall of the outer connecting part (21) is provided with a second step part (212), the right valve seat (52) is abutted on the side of the second step part (212) which is away from the left valve body (1), and the right half-ball valve core (51) is located on the side of the right valve seat (52) which is away from the second step part (212). The end surface of the inner connecting part (11) and the second step part (212) are provided with a sealing gasket (6).

7. A low flow resistance quick connect valve block for compact spaces according to claim 6, characterized in that, The outer circumferential surface of the inner connecting part (11) is provided with a third step part (113), and the end surface of the outer connecting part (21) is abutted on the third step part (113).

8. A low flow resistance quick connect valve block for compact spaces according to claim 6, wherein, ​ 9. A low flow resistance quick connect valve block for compact spaces according to claim 5, wherein, The left half ball valve core (41) is provided with a left through hole along the axial direction of the left valve body (1), and the right half ball valve core (51) is provided with a right through hole along the axial direction of the right valve body (2).

10. A low flow resistance quick connect valve block for compact spaces according to claim 5, wherein, One end of the left valve rod (43) and the right valve rod (53) is provided with a wrench groove (8) for connecting a wrench.

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