A cylinder hand-pull valve

Abstract

The present invention relates to a hand-pull valve for a cylinder, comprising a valve body, a valve core slidably connected in the valve body, a locking structure and a sealing member provided between the valve body and the valve core, a first sealing ring groove, a second sealing ring groove, a third sealing ring groove, a fourth sealing ring groove, a fifth sealing ring groove, a sixth sealing ring groove, a seventh sealing ring groove, and an eighth sealing ring groove provided in sequence on the outer periphery of the valve core, a first air outlet groove provided between the third sealing ring groove and the fourth sealing ring groove, a second air outlet groove provided between the fourth sealing ring groove and the fifth sealing ring groove, a valve core hole provided axially in the valve core, the left end of the valve core hole being the first working port, and the right end of the valve core hole extending to between the seventh sealing ring groove and the eighth sealing ring groove. The working ports of the present invention are all in the axial position, which simplifies the structure of the overall equipment, eliminates the need for pipe joint connection, makes installation simple, operation convenient, maintenance easy, and reduces overall cost.

Description

Technical Field

[0001] The invention belongs to the technical field of pneumatic components and relates to a hand-pull valve for a cylinder. Background Art

[0002] A manual valve is an actuator that is manually operated to operate the valve. It is suitable for many fields that require manual switching, such as switching the working state of a cylinder. However, the existing manual valve has a complex structure, and the air inlet, working port and exhaust port are all perpendicular to the valve core axis, which requires a large space in the application. Summary of the Invention

[0003] The object of the present invention is to provide a hand-pull valve for a cylinder, which can solve the above-mentioned problems and is easy to operate and maintain.

[0004] According to the technical solution provided by the present invention: a cylinder hand-pull valve, including a valve body, a valve core slidably connected in the valve body, a locking structure and a seal are provided between the valve body and the valve core, a first sealing ring groove, a second sealing ring groove, a third sealing ring groove, a fourth sealing ring groove, a fifth sealing ring groove, a sixth sealing ring groove, a seventh sealing ring groove, and an eighth sealing ring groove are sequentially provided on the outer periphery of the valve core, a first air outlet groove is provided between the third sealing ring groove and the fourth sealing ring groove, a second air outlet groove is provided between the fourth sealing ring groove and the fifth sealing ring groove, a valve core hole is axially provided in the valve core, the left port of the valve core hole is the first working port, and the right port of the valve core hole extends to between the seventh sealing ring groove and the eighth sealing ring groove. A first valve core air outlet hole and a second valve core air outlet hole are radially provided in the valve core, the outer end of the first valve core air outlet hole is connected to the second air outlet groove, the inner end of the first valve core air outlet hole is connected to the middle part of the valve core hole, the outer end of the second valve core air outlet hole is located between the seventh sealing ring groove and the eighth sealing ring groove, and the inner end of the second valve core air outlet hole is connected to the right end part of the valve core hole; the first sealing ring groove, the second sealing ring groove, the third sealing ring groove, the fourth sealing ring groove, the fifth sealing ring groove, the sixth sealing ring groove, the seventh sealing ring groove and the eighth sealing ring groove are respectively sleeved with the first sealing ring, the second sealing ring, the third sealing ring, the fourth sealing ring, the fifth sealing ring, the sixth sealing ring, the seventh sealing ring and the eighth sealing ring groove.

[0005] As a further improvement of the present invention, a valve body hole is axially provided in the valve body, and the first valve body groove ring, the second valve body groove ring, the third valve body groove ring, the fourth valve body groove ring and the fifth valve body groove ring are sequentially provided in the valve body hole. The first valve body groove ring is connected to the first exhaust port, the second valve body groove ring is connected to the second working hole, the third valve body groove ring is connected to the air inlet hole, and the fifth valve body groove ring is connected to the second exhaust port.

[0006] As a further improvement of the present invention, the air inlet hole and the second working hole are right-angle holes, including an axial part and a radial part that are interconnected. The radial parts of the air inlet hole and the second working hole are processed by radial drilling and plugging the outer ends; the outer ends of the air inlet hole and the second working hole are located at the left end of the valve body.

[0007] As a further improvement of the present invention, mufflers are installed at the outer ends of the first exhaust port and the second exhaust port.

[0008] As a further improvement of the present invention, the locking structure includes a valve core locking hole and a locking ring. A valve core locking hole is radially provided on the right side of the valve body. The valve core locking hole is connected to the valve body hole. A plug is installed at the outer end of the valve body hole. A locking spring and a locking steel ball are provided between the plug and the locking ring. The locking ring consists of a first locking ring groove, a second locking ring groove, and a third locking ring groove. The first locking ring groove, the second locking ring groove, and the third locking ring groove are sequentially opened on the outer periphery of the right side of the valve core. The right end of the valve core extends out of the valve body and is installed with a handle cap.

[0009] As a further improvement of the present invention, the valve body adopts a split structure, consisting of a front end valve body and a valve cover connected by bolts; an intermediate sealing ring and a retaining ring are installed between the front end valve body and the valve cover.

[0010] The positive progress of this application is:

[0011] The working ports of the present invention are all in the axial position, which simplifies the structure of the overall equipment, eliminates the need for pipe joint connections, makes installation simple, operation convenient, maintenance easy, and reduces overall costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the valve core of the present invention.

[0013] Figure 2 It is a structural schematic diagram of the valve body of the present invention.

[0014] Figure 3 It is a top sectional view of the valve body of the present invention.

[0015] Figure 4 for Figure 3 AA cross-sectional view.

[0016] Figure 5 for Figure 4 BB cross-sectional view.

[0017] Figure 6 for Figure 4 CC cross-sectional view.

[0018] Figure 7 This is a structural schematic diagram of the steel ball of the present invention located in the first locking ring groove.

[0019] Figure 8 This is a structural schematic diagram of the steel ball of the present invention located in the second locking ring groove.

[0020] Figure 9 This is a structural schematic diagram of the steel ball of the present invention located in the third locking ring groove.

[0021] Figures 1-9 It includes a valve body, a valve core, a first sealing ring groove 2-1, a second sealing ring groove 2-2, a third sealing ring groove 2-3, a fourth sealing ring groove 2-4, a fifth sealing ring groove 2-5, a sixth sealing ring groove 2-6, a seventh sealing ring groove 2-7, an eighth sealing ring groove 2-8, etc. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate for the embodiments of the present invention described herein. In addition, similar terms such as "including" and "having" mean that in addition to those contents already listed in "including" and "having", other contents that have not been listed may also be "included" and "having"; for example, a process, method, system, product or device that may include a series of steps or units is not necessarily limited to those steps or units that have been clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] Due to the angle of the drawing, some components may not be drawn, but their positions and connection relationships can be partially understood based on the text.

[0026] like Figure 7-Figure 9 As shown, the present invention is a hand-pull valve for a cylinder, comprising a valve body, a valve core slidably connected in the valve body, and a locking structure and a sealing member provided between the valve body and the valve core.

[0027] like Figure 1As shown, the outer periphery of the valve core is provided with a first sealing ring groove 2-1, a second sealing ring groove 2-2, a third sealing ring groove 2-3, a fourth sealing ring groove 2-4, a fifth sealing ring groove 2-5, a sixth sealing ring groove 2-6, a seventh sealing ring groove 2-7, and an eighth sealing ring groove 2-8 in sequence. A first air outlet groove 2-12 is provided between the third sealing ring groove 2-3 and the fourth sealing ring groove 2-4, a second air outlet groove 2-13 is provided between the fourth sealing ring groove 2-4 and the fifth sealing ring groove 2-5, a valve core hole 2-9 is provided axially in the valve core, and the left end of the valve core hole 2-9 is The first working port, the right end of the valve core hole 2-9 extends to between the seventh sealing ring groove 2-7 and the eighth sealing ring groove 2-8, and the first valve core air outlet hole 2-10 and the second valve core air outlet hole 2-11 are radially provided in the valve core. The outer end of the first valve core air outlet hole 2-10 is connected to the second air outlet groove 2-13, and the inner end of the first valve core air outlet hole 2-10 is connected to the middle of the valve core hole 2-9. The outer end of the second valve core air outlet hole 2-11 is located between the seventh sealing ring groove 2-7 and the eighth sealing ring groove 2-8, and the inner end of the second valve core air outlet hole 2-11 is connected to the right end of the valve core hole 2-9.

[0028] like Figure 2-Figure 6 As shown, a valve body hole 1-10 is axially provided in the valve body, and the first valve body groove ring 1-1, the second valve body groove ring 1-2, the third valve body groove ring 1-3, and the fifth valve body groove ring 1-4 are sequentially provided in the valve body hole 1-10. The first valve body groove ring 1-1 is connected to the first exhaust port 1-5, the second valve body groove ring 1-2 is connected to the second working hole 1-6, the third valve body groove ring 1-3 is connected to the air inlet hole 1-7, and the fifth valve body groove ring 1-4 is connected to the second exhaust port 1-8.

[0029] The air inlet hole 1-7 and the second working hole 1-6 are right-angle holes, including an axial portion and a radial portion that are interconnected. The radial portions of the air inlet hole 1-7 and the second working hole 1-6 are processed by radial drilling and are processed by external end plugs 19. The outer ends of the air inlet hole 1-7 and the second working hole 1-6 are located at the left end of the valve body.

[0030] Mufflers 18 are installed at the outer ends of the first exhaust port 1-5 and the second exhaust port 1-8 to avoid noise.

[0031] The locking structure includes a valve core locking hole 1-9 and a locking ring. The valve core locking hole 1-9 is radially provided on the right side of the valve body. The valve core locking hole 1-9 is connected to the valve body hole 1-10. A plug 11 is installed at the outer end of the valve body hole 1-10. A locking spring 12 and a locking steel ball 13 are provided between the plug 11 and the locking ring. The locking ring consists of a first locking ring groove 2-14, a second locking ring groove 2-15, and a third locking ring groove 2-16. The first locking ring groove 2-14, the second locking ring groove 2-15, and the third locking ring groove 2-16 are sequentially opened on the outer periphery of the right side of the valve core. The right end of the valve core extends out of the valve body and is installed with a handle cap.

[0032] The first sealing ring groove 2-1, the second sealing ring groove 2-2, the third sealing ring groove 2-3, the fourth sealing ring groove 2-4, the fifth sealing ring groove 2-5, the sixth sealing ring groove 2-6, the seventh sealing ring groove 2-7 and the eighth sealing ring groove 2-8 are respectively sleeved with the first sealing ring 3, the second sealing ring 4, the third sealing ring 5, the fourth sealing ring 6, the fifth sealing ring 7, the sixth sealing ring 8, the seventh sealing ring 9 and the eighth sealing ring 10.

[0033] The valve body adopts a split structure, which is composed of a front end valve body 4 and a valve cover 15 connected by bolts. In order to ensure the sealing between the front end valve body 4 and the valve cover 15, an intermediate sealing ring 16 and a retaining ring 17 are installed between the front end valve body 4 and the valve cover 15.

[0034] The working process of the present invention is as follows:

[0035] The first working port of the left end of the valve core hole 2-9 is connected to the left port of the cylinder through a pipeline, and the outer end of the second working hole 1-6 is connected to the right port of the cylinder.

[0036] like Figure 7 As shown, the locking steel ball 13 is located in the first locking ring groove 2-14. At this time, gas enters the third valve body groove ring 1-3 from the air inlet 1-7. The third sealing ring 5 is located in the second valve body groove ring 1-2, and the two are not in contact. Gas flows from the third valve body groove ring 1-3 to the second valve body groove ring 1-2, and from the second valve body groove ring 1-2 into the second working hole 1-6. At the same time, the fifth sealing ring 7 is located in the fifth valve body groove ring 1-4, and the two are not in contact. The first working port of the left end of the valve core hole 2-9 is connected to the second exhaust port 1-8 through the first valve core air outlet hole 2-10, the second air outlet groove 2-13, and the fifth valve body groove ring 1-4. The remaining sealing rings are tightly attached to the valve body hole 1-10 for sealing. This ensures that the right end of the cylinder is supplied with air by the second working hole 1-6, the left end of the cylinder is exhausted by the first working port of the left end of the valve core hole 2-9, and the cylinder piston rod moves toward the left end of the cylinder.

[0037] like Figure 8 As shown, hold the handle cap on the right end of the valve core and push it to the left. The valve core overcomes the elastic force of the locking spring 12, pushes open the locking steel ball 13, and then moves to the left until the locking steel ball 13 slides into the second locking ring groove 2-15, completing the locking. At this time, the fourth sealing ring 6 is located in the third valve body groove ring 1-3 and the two are not in contact, and the remaining sealing rings are tightly attached to the valve body hole 1-10 for sealing. The gas passes through the air inlet 1-7 and the third valve body groove ring 1-3 in sequence and flows to the first air outlet groove 2-12 and the second air outlet groove 2-13. The gas flowing into the first air outlet groove 2-12 flows into the right port of the cylinder through the second valve body groove ring 1-2 and the second working hole 1-6. The gas flowing into the second air outlet groove 2-13 flows into the left port of the cylinder through the first valve core outlet hole 2-10 and the first working port of the left port of the valve core hole 2-9. The air pressure at both ends of the cylinder is balanced and is in a pressure-maintaining equilibrium state.

[0038] like Figure 9 As shown, continue to hold the handle cap on the right end of the valve core and push it to the left. The valve core overcomes the elastic force of the locking spring 12, pushes open the locking steel ball 13, and then moves to the left until the locking steel ball 13 slides into the third locking ring groove 2-16, completing the locking. The gas flows through the air inlet hole 1-7, the third valve body groove ring 1-3, the second air outlet groove 2-13, the first valve core air outlet hole 2-10, the first working port of the left port of the valve core hole 2-9, and flows into the left port of the cylinder. The right port of the cylinder is connected to the second valve body groove ring 1-2, the first valve body groove ring 1-1, and the first exhaust port 1-5 in sequence through the second working hole 1-6. In this way, the left port of the cylinder is supplied with air by the air inlet hole 1-7, the right port of the cylinder is exhausted by the first exhaust port 1-5, and the cylinder piston rod moves toward the right port of the cylinder.

[0039] It will be understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art will appreciate that various modifications and improvements can be made without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A hand-pull valve for a cylinder, comprising a valve body, a valve core slidably connected in the valve body, a locking structure and a sealing member provided between the valve body and the valve core, characterized in that: The outer circumference of the valve core is provided with a first sealing ring groove (2-1), a second sealing ring groove (2-2), a third sealing ring groove (2-3), a fourth sealing ring groove (2-4), a fifth sealing ring groove (2-5), a sixth sealing ring groove (2-6), a seventh sealing ring groove (2-7), and an eighth sealing ring groove (2-8) in sequence; a first air outlet groove (2-12) is provided between the third sealing ring groove (2-3) and the fourth sealing ring groove (2-4); a second air outlet groove (2-13) is provided between the fourth sealing ring groove (2-4) and the fifth sealing ring groove (2-5); a valve core hole (2-9) is provided in the axial direction of the valve core; a valve core hole (2-10) is provided in the axial direction of the valve core; a valve core hole (2-11) is provided in the axial direction of the valve core; a valve core hole (2-12) is provided in the axial direction of the valve core; a valve core hole (2-13) is provided in the axial direction of the valve core; a valve core hole (2-14) is provided in the axial direction of the valve core; a valve core hole (2-15) is provided in the axial direction of the valve core; a valve core hole (2-16) is provided in the axial direction of the valve core; a valve core hole (2-17) is provided in the axial direction of the valve core; a valve core hole (2-18) is provided in the axial direction of the valve core; a valve core hole (2-19) is provided in the axial direction of the valve core; a valve core hole (2-1 ... 9) The left port is the first working port, and the right port of the valve core hole (2-9) extends to between the seventh sealing ring groove (2-7) and the eighth sealing ring groove (2-8). The valve core is radially provided with a first valve core air outlet hole (2-10) and a second valve core air outlet hole (2-11). The outer end of the first valve core air outlet hole (2-10) is connected to the second air outlet groove (2-13), and the inner end of the first valve core air outlet hole (2-10) is connected to the middle of the valve core hole (2-9). The outer end of the second valve core air outlet hole (2-11) is located between the seventh sealing ring groove (2-7) and the eighth sealing ring groove (2-8), and the inner end of the second valve core air outlet hole (2-11) is connected to the valve core. The right end of the hole (2-9); the first sealing ring groove (2-1), the second sealing ring groove (2-2), the third sealing ring groove (2-3), the fourth sealing ring groove (2-4), the fifth sealing ring groove (2-5), the sixth sealing ring groove (2-6), the seventh sealing ring groove (2-7), and the eighth sealing ring groove (2-8) are respectively provided with the first sealing ring (3), the second sealing ring (4), the third sealing ring (5), the fourth sealing ring (6), the fifth sealing ring (7), the sixth sealing ring (8), the seventh sealing ring (9), and the eighth sealing ring (10); the locking structure includes the valve core locking hole (1-9) and the locking ring, the valve A valve core locking hole (1-9) is radially provided on the right side of the valve body, the valve core locking hole (1-9) is connected to the valve body hole (1-10), a plug (11) is installed at the outer end of the valve body hole (1-10), a locking spring (12) and a locking steel ball (13) are provided between the plug (11) and the locking ring, and the locking ring consists of a first locking ring groove (2-14), a second locking ring groove (2-15), and a third locking ring groove (2-16). The first locking ring groove (2-14), the second locking ring groove (2-15), and the third locking ring groove (2-16) are sequentially opened on the outer periphery of the right side of the valve core, and the right end of the valve core extends out of the valve body and is installed with a handle cap.

2. The cylinder hand-pull valve according to claim 1, characterized in that: A valve body hole (1-10) is axially provided in the valve body, and a first valve body groove ring (1-1), a second valve body groove ring (1-2), a third valve body groove ring (1-3), a fourth valve body groove ring, and a fifth valve body groove ring (1-4) are sequentially provided in the valve body hole (1-10), the first valve body groove ring (1-1) is connected to the first exhaust port (1-5), the second valve body groove ring (1-2) is connected to the second working hole (1-6), the third valve body groove ring (1-3) is connected to the air inlet hole (1-7), and the fifth valve body groove ring (1-4) is connected to the second exhaust port (1-8).

3. The hand-pull valve for cylinder according to claim 2, characterized in that: The air inlet hole (1-7) and the second working hole (1-6) are right-angle holes, including an axial portion and a radial portion that are interconnected. The radial portions of the air inlet hole (1-7) and the second working hole (1-6) are processed by radial drilling and passing through an outer end plug (19); the outer ends of the air inlet hole (1-7) and the second working hole (1-6) are located at the left end of the valve body.

4. The cylinder hand-pull valve according to claim 2, characterized in that: Mufflers (18) are installed at the outer ends of the first exhaust port (1-5) and the second exhaust port (1-8).

5. The hand-pull cylinder valve according to claim 1, characterized in that: The valve body adopts a split structure, which is composed of a front end valve body (14) and a valve cover (15) connected by bolts; an intermediate sealing ring (16) and a retaining ring (17) are installed between the front end valve body (14) and the valve cover (15).

Images