Improved one-way throttle valve

Abstract

The utility model discloses an improved one-way throttle valve, which structurally comprises a valve body, a one-way component, an adjusting cavity, an adjusting valve rod, an adjusting hand wheel and the like, and is mainly characterized in that the valve body consists of an upper valve body and a lower valve body, the adjusting cavity is arranged on the top surface of the lower valve body, and then the bottom of the upper valve body is fixedly assembled with the top of the lower valve body. And then, an inclined hole which is respectively communicated with the right port and the adjusting cavity is formed in the lower valve body. Obviously, the valve body assembled and fixed in an up-down split mode is smaller and more attractive in appearance, the adjusting cavity can be directly exposed on the top face of the lower valve body so that machining can be conveniently carried out, the machining precision can be guaranteed, an inclined hole can be directly machined in the adjusting cavity to be communicated with the right port, and the trouble of additionally arranging a communication structure is avoided; meanwhile, the one-way assembly comprises the spring seat, the valve element and the springs elastically pushed between the valve element and the spring seat, the opening and closing sealing performance is better, and the interchangeability and universality of parts are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a one-way throttling valve, specifically to an improved one-way throttling valve. BACKGROUND

[0002] The one-way throttling valve is a combined valve of a one-way valve and a throttling valve, and its structure is usually composed of a valve body, left and right ports at two ends of the valve body, a one-way component installed in the right port and forming one-way flow from the left port to the right port, an adjusting cavity and an adjusting valve rod arranged in the valve body, and an adjusting hand wheel installed on the top of the valve body, etc., and its working process is as follows: if the right port enters and the left port exits, the adjusting hand wheel drives the adjusting valve rod to adjust the flow of the adjusting cavity, so as to change the flow entering the actuator and achieve the purpose of speed regulation; if the left port enters and the right port exits, the one-way component is directly pushed open to return, thereby realizing one-way speed regulation. However, the valve body of the conventional one-way throttling valve is integrally cast, and its appearance is bulky and unsightly. In particular, the adjusting cavity in the valve body is difficult to be internally machined, and it is also difficult to ensure the machining precision. Moreover, the communication structure between the right port and the adjusting cavity cannot be directly machined in the valve body, and it is often necessary to be additionally arranged, which is obviously quite troublesome. Meanwhile, the one-way component is usually realized by a spring pushing a steel ball, and the opening and closing sealing performance is poor in actual use, which affects the normal use of one-way flow. SUMMARY

[0003] The utility model solves the technical problem of overcoming the defects of the prior art and provides an improved one-way throttling valve with a small and beautiful appearance, facilitating the machining of the adjusting cavity in the valve body and ensuring the machining precision, and effectively improving the sealing performance of the one-way component.

[0004] The technical problem of the utility model is solved by the following technical scheme.

[0005] An improved one-way throttling valve comprises a valve body, left and right ports at two ends of the valve body, a one-way component installed in the right port and forming one-way flow from the left port to the right port, an adjusting cavity and an adjusting valve rod arranged in the valve body, and an adjusting hand wheel installed on the top of the valve body and driving the adjusting valve rod to form flow adjustment of the adjusting cavity. The valve body is composed of an upper valve body and a lower valve body. The adjusting cavity is arranged on the top surface of the lower valve body. The bottom of the upper valve body is fixedly arranged on the top of the lower valve body, and the adjusting cavity is sealed and closed in the valve body. The lower valve body is provided with inclined holes respectively communicating with the right port and the adjusting cavity.

[0006] The upper valve body is provided with a valve rod hole vertically penetrating and allowing the adjusting valve rod to rotate and be sealingly installed. The bottom of the upper valve body is non-oxidatively welded and fixed on the top of the lower valve body, and the valve rod hole and the adjusting cavity are on the same axis.

[0007] The bottom surface of the upper valve body is provided with a mounting convex ring with the same axis as the valve stem hole, and the top surface of the lower valve body is provided with a mounting ring groove with the same axis as the regulating chamber. The upper valve body is positioned and fitted in the mounting ring groove of the lower valve body through the mounting convex ring and fixed by non-oxidation welding.

[0008] The one-way component comprises a spring seat installed in the right port, a valve core arranged on the left side of the spring seat, and springs elastically pushed between the valve core and the spring seat.

[0009] The left end of the valve core is provided with a conical sealing surface, and a guide tube and a guide column for axial reciprocating movement of the valve core are respectively provided between the right end of the valve core and the left end of the spring seat. The spring seat is provided with a plurality of through holes.

[0010] An opening and closing inner shoulder is provided in the lower valve body, and the valve core is pushed to the left by the elasticity of the spring and elastically seals and contacts the opening and closing inner shoulder with a conical sealing surface.

[0011] The spring seat is installed in the internal thread hole of the right port in a threaded connection manner through the external thread on the outer circumference.

[0012] An upper retaining ring and a lower retaining ring are arranged in the valve stem hole, and the upper and lower retaining rings cooperate with the limiting outer shoulder outside the regulating valve stem to limit the lifting and lowering travel of the regulating valve stem.

[0013] The top surface of the adjusting hand wheel is provided with a hand wheel rotation direction mark, and the outer circumferential surface of the bottom of the adjusting hand wheel is provided with a digital mark.

[0014] The adjusting hand wheel is provided with a locking screw, which is tightened inward to contact the upper valve body and limit the rotation of the adjusting hand wheel, and is loosened outward to disengage from the upper valve body and allow the adjusting hand wheel to rotate freely.

[0015] Compared with the prior art, the present invention mainly adopts an upper valve body and a lower valve body to form a valve body, and sets the regulating chamber on the top surface of the lower valve body. After the bottom of the upper valve body is assembled and fixed with the top of the lower valve body, the regulating chamber can be sealed inside, and then an oblique hole is provided in the lower valve body to connect the right port and the regulating chamber respectively. Obviously, compared with the traditional overall cast valve body, this upper and lower split-assembly fixed valve body has a more compact and beautiful appearance. It can not only allow the regulating chamber to be directly exposed to the top surface of the lower valve body for easy processing, but also ensure the processing accuracy of the regulating chamber. It can also directly process an oblique hole from the regulating chamber to connect to the right port, avoiding the trouble of setting up an additional connecting structure. At the same time, the one-way assembly adopts a spring seat, a valve core, and a spring that elastically pushes between the valve core and the spring seat. Compared with the traditional opening and closing structure of the spring pushing the steel ball, it not only has better opening and closing sealing performance, but also increases the interchangeability and versatility between parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The sectional view structural diagram of the utility model.

[0017] Figure 2 The appearance structure diagram of the utility model. Figure 1

[0018] Figure 3 The plan view of the utility model. Figure 2

[0019] Figure 4 The left view of the utility model. Figure 2

[0020] Figure 5 The perspective view of the utility model. Figure 2

[0021] Figure 6 The sectional view of the upper valve body.

[0022] Figure 7 The sectional view of the lower valve body.

[0023] Figure 8 The sectional view of the one-way assembly.

[0024] Figure 9 The appearance structure diagram of the utility model. Figure 8

[0025] Figure 10 The perspective view of the utility model. Figure 9 DETAILED DESCRIPTION

[0026] The utility model embodiment will be explained in detail below according to the above-mentioned drawings.

[0027] As shown in the drawings, 1. valve body, 11. upper valve body, 111. valve rod hole, 112. installation convex ring, 12. lower valve body, 121. left port, 122. right port, 123. adjusting cavity, 124. inclined hole, 125. installation ring groove, 126. opening and closing inner shoulder, 2. one-way assembly, 21. spring seat, 211. guide column, 212. through hole, 22. valve core, 221. conical sealing surface, 222. guide pipe, 23. spring, 3. adjusting valve rod, 31. limiting outer shoulder, 32. screw, 4. adjusting hand wheel, 41. hand wheel rotation direction mark, 42. digital identification, 5. upper check ring, 6. lower check ring, 7. O-shaped ring, 8. scale sticker, 9. locking screw. Figures 1-10 An improved one-way throttling valve, as

[0028] Figures 1-5 ​​​​​​​As shown, it is a combined valve of check valve and throttle valve, which comprises a valve body 1, a left port 121 and a right port 122 arranged at two ends of the valve body respectively, a check assembly 2 arranged in the right port and forming a one-way flow from the left port to the right port, an adjusting cavity 123 and an adjusting valve rod 3 arranged in the valve body, and an adjusting hand wheel 4 arranged on the top of the valve body and driving the adjusting valve rod 3 to form flow adjustment for the adjusting cavity 123.

[0029] The valve body 1 is a split assembly structure composed of an upper valve body 11 and a lower valve body 12, the left port 121 and the right port 122 are arranged at two ends of the lower valve body 12 and are on the same horizontal axis, the adjusting cavity 123 is arranged on the top surface of the lower valve body 12, and the top surface of the lower valve body is provided with a mounting ring groove 125 with the same axis as the adjusting cavity, the upper valve body 11 is provided with a valve rod hole 111 vertically penetrating and allowing the adjusting valve rod 3 to rotate and seal, and an O-ring 7 is usually arranged between the adjusting valve rod 3 and the valve rod hole 111 as a dynamic sealing element for contact sealing, and the bottom surface of the upper valve body 11 is provided with a mounting convex ring 112 with the same axis as the valve rod hole 111.

[0030] In this way, the upper valve body 11 is positioned and matched in the mounting ring groove 125 of the lower valve body 12 through the mounting convex ring 112, and then is fixed by non-oxidizing welding, that is, the bottom of the upper valve body 11 is fixed by non-oxidizing welding on the top of the lower valve body 12, so that the valve rod hole 111 and the adjusting cavity 123 are on the same axis, thereby ensuring the concentricity of the corresponding holes of the upper and lower valve bodies, and the mounting ring groove 125 can better protect the valve line during non-oxidizing welding.

[0031] Meanwhile, after the bottom of the upper valve body 11 and the top of the lower valve body 12 are matched and fixed, the adjusting cavity 123 is sealed and closed inside, and then the inclined hole 124 is arranged in the lower valve body 12 and communicates with the right port 122 and the adjusting cavity 123.

[0032] Obviously, compared with the traditional overall cast valve body, the valve body of the split assembly fixed type adopted by the utility model has a more compact and beautiful appearance, can directly expose the adjusting cavity 123 on the top surface of the lower valve body 12 to facilitate processing, ensure the processing precision of the adjusting cavity 123, and directly process the inclined hole 124 from the adjusting cavity 123 to communicate with the right port 122, thereby avoiding the trouble of additionally arranging a communication structure.

[0033] In addition, the size of the upper and lower valve bodies and the size of the hexagonal matching connector are the same, so that the structure is more compact and the overall component is easier to form miniaturization.

[0034] The one-way assembly 2 comprises a spring seat 21 installed in the right port 122, a valve core 22 arranged on the left side of the spring seat, and springs 23 elastically pushed between the valve core and the spring seat, all of which can be made of metal.

[0035] The left end of the valve core 22 is provided with a conical sealing surface 221, and the right end of the valve core and the left end of the spring seat 21 are respectively provided with a guide tube 222 and a guide column 211 which constitute the axial reciprocating movement of the valve core 22, as shown in the specific embodiment. Figure 8 As shown, the right end of the valve core 22 is provided with the guide tube 222 extending rightward along the same axis, and the left end of the spring seat 21 is provided with the guide column 211 extending leftward along the same axis, so that the guide tube 222 and the guide column 211 constitute the axial reciprocating movement of the valve core 22 after being assembled.

[0036] The lower valve body 12 is provided with an opening and closing inner shoulder 126, and the valve core 22 is elastically pushed leftward by the spring 23 and elastically sealed by the conical sealing surface 221 on the opening and closing inner shoulder 126 in the normal state.

[0037] The spring seat 21 is installed in the internal threaded hole of the right port 122 in a threaded connection manner through the external threads on the outer circumference, and a plurality of through holes 212 are arranged on the spring seat 21.

[0038] Therefore, compared with the opening and closing structure of the traditional spring pushing steel ball, the one-way assembly 2 using the spring seat 21, the valve core 22 and the spring 23 has better opening and closing sealing performance, and also increases the interchangeability and universality between parts.

[0039] The lower end of the valve rod 3, i.e. the threaded section, enters the adjusting cavity 123, and the head part can be provided with a conical structure to better throttle the adjusting cavity 123; the upper end of the valve rod 3 is fixed with the adjusting hand wheel 4 through the screw 32 after extending out of the valve rod hole 111; the upper and lower stop washers 5 and 6 are embedded and fixed in the valve rod hole 111, and the lifting movement stroke of the adjusting valve rod is limited by the cooperation of the upper and lower stop washers and the limiting outer shoulder 31 outside the adjusting valve rod.

[0040] The adjusting hand wheel 4 covers the entire top of the upper valve body 11, the top surface of the adjusting hand wheel 4 is provided with a hand wheel rotation direction mark 41 which can be used to indicate the rotation direction of the adjusting hand wheel; the top outer circumferential surface of the adjusting hand wheel 4 is provided with anti-skid lines to facilitate the user's finger driving operation, and the bottom outer circumferential surface of the adjusting hand wheel 4 is provided with a digital mark 42 which can form a cooperative indication with the scale label 8 on the outer surface of the upper valve body 11, so that the adjusting hand wheel 4 can more accurately adjust the opening degree.

[0041] In addition, the adjusting hand wheel 4 is provided with a locking screw 9, that is, as shown in the specific embodiment. Figure 2The locking screw is arranged on the outer circumferential surface of the adjusting hand wheel 4; in this way, the rotation of the adjusting hand wheel 4 can be limited by only screwing the locking screw 9 inwards to contact the upper valve body 11, thereby facilitating the prevention of self-rotation of the adjusting hand wheel under working conditions such as vibration, and when the locking screw 9 is screwed outwards to be separated from the upper valve body 11, the adjusting hand wheel 4 can be freely rotated for adjustment.

[0042] The above-described embodiments are only used for illustrating the present application and are not used for limiting the scope of the present application. In addition, it should be understood that after reading the content taught by the present application, those skilled in the art can make various changes or modifications to the present application, and these equivalent forms also fall within the scope defined by the claims of the present application.

Claims

1. An improved one-way throttling valve, comprising a valve body (1), a left port (121) and a right port (122) at both ends of the valve body, a one-way assembly (2) installed in the right port and forming one-way flow from the left port to the right port, an adjusting cavity (123) and an adjusting valve rod (3) arranged in the valve body (1), and an adjusting hand wheel (4) installed on the top of the valve body (1) and driving the adjusting valve rod (3) to form flow adjustment for the adjusting cavity (123), characterized in that The valve body (1) is composed of an upper valve body (11) and a lower valve body (12), the adjusting cavity (123) is arranged on the top surface of the lower valve body (12), the bottom of the upper valve body (11) is fixedly connected with the top of the lower valve body (12), and the adjusting cavity (123) is sealed and closed in the upper valve body (11).

2. The improved one-way choke valve according to claim 1, wherein The upper valve body (11) is provided with a valve rod hole (111) vertically penetrating and allowing the adjusting valve rod (3) to rotate and be sealingly installed, the bottom of the upper valve body (11) is fixedly connected with the top of the lower valve body (12) by non-oxidation welding, and the valve rod hole (111) and the adjusting cavity (123) are on the same axis.

3. The improved one-way choke valve according to claim 2, wherein The bottom surface of the upper valve body (11) is provided with a mounting convex ring (112) with the same axis as the valve rod hole (111), the top surface of the lower valve body (12) is provided with a mounting ring groove (125) with the same axis as the adjusting cavity (123), and the upper valve body (11) is positioned and connected in the mounting ring groove (125) of the lower valve body (12) through the mounting convex ring (112) and is fixed by non-oxidation welding.

4. The improved one-way choke valve of claim 1, wherein The one-way assembly (2) comprises a spring seat (21) mounted in the right port (122), a valve core (22) arranged on the left side of the spring seat (21), and springs (23) elastically pushed between the valve core (22) and the spring seat (21).

5. The improved one-way choke valve of claim 4, wherein The left end of the valve core (22) is provided with a tapered sealing surface (221), the right end of the valve core (22) and the left end of the spring seat (21) are respectively provided with a guide pipe (222) and a guide column (211) for axial reciprocating movement of the valve core (22), and the spring seat (21) is provided with a plurality of through holes (212).

6. An improved one-way choke valve as claimed in claim 5 wherein The lower valve body (12) is provided with an opening and closing inner shoulder (126), and the valve core (22) is elastically pushed to the left by the spring (23) and elastically sealed to the opening and closing inner shoulder (126) by the tapered sealing surface (221).

7. The improved one-way choke valve of claim 5, wherein The spring seat (21) is installed in the internal threaded hole of the right port (122) by external threads in a threaded connection manner.

8. The improved one-way choke valve of claim 2, wherein The valve rod hole (111) is provided with an upper stop ring (5) and a lower stop ring (6), and the lifting movement stroke of the adjusting valve rod (3) is limited by the cooperation of the upper and lower stop rings and the limiting outer shoulder (31) outside the adjusting valve rod (3).

9. The improved one-way choke valve of claim 1, wherein The top surface of the adjusting hand wheel (4) is provided with a hand wheel rotation direction mark (41), and the bottom outer circumferential surface of the adjusting hand wheel (4) is provided with a digital mark (42).

10. The improved one-way choke valve of claim 1, wherein The adjusting hand wheel (4) is provided with a locking screw (9), the locking screw is tightened inward to contact the upper valve body (11) and limit the rotation of the adjusting hand wheel (4), the locking screw (9) is loosened outward to be separated from the upper valve body (11), and the adjusting hand wheel (4) is freely rotated.

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