Novel online sampling valve

Abstract

The utility model provides a novel on-line sampling valve. The novel on-line sampling valve comprises a self-aligning handle, a fixing column, a valve body and a clamping needle disc which are sequentially connected from top to bottom, the self-return handle is used for controlling the valve rod in the middle of the fixed column to move up and down; a first through hole allowing the valve rod to move up and down is formed in the middle of the fixing column, and a blowing hole communicated with the first through hole is formed in the side face of the fixing column; a second through hole for the valve rod to move up and down is formed in the middle of the top surface of the valve body, and a conical liquid outlet is formed in the middle of the bottom surface of the valve body; an upper needle seat and a lower needle seat are vertically arranged in the needle clamping disc, a first sampling needle penetrates through the middle parts of the upper needle seat and the lower needle seat, and a second sampling needle penetrates through one side of the upper needle seat and the lower needle seat. The structure is ingenious, the self-return handle is adopted, and manual lifting and automatic pressing return of the valve rod can be achieved; when the valve rod is pressed downwards, the old liquid discharging operation before sampling can be realized through the air blowing hole and the air cavity in the valve rod; and when the valve rod is lifted, the sampling needle can realize automatic sampling.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, in particular to a novel online sampling valve. Background Art

[0002] An in-line sampling valve is a device specifically designed to directly extract representative samples of media from process piping or bypass piping systems. It is widely used in industries such as chemical, pharmaceutical, and oil refining, and is particularly well-suited for processes requiring frequent sampling. Its advantages, such as excellent sealing, safety and environmental protection, ease of operation, and accurate sampling, make it the preferred device in these fields. Currently, existing in-line sampling valves suffer from large dead zones and lack integrated purge mechanisms. Summary of the Invention

[0003] In order to solve the above problems, the present invention discloses a novel online sampling valve.

[0004] The specific plan is as follows:

[0005] A new type of online sampling valve, characterized in that it includes a self-returning handle, a fixed column, a valve body and a needle disk connected in sequence from top to bottom; the self-returning handle is used to control the up and down movement of the valve stem in the middle of the fixed column; the middle of the fixed column is provided with a first through-hole for the valve stem to move up and down, and the side is provided with a blowing hole connected to the first through-hole, and the valve stem is provided with an air cavity connected to its lower end, and the upper end side of the air cavity is connected to the blowing hole; a transversely arranged fluid channel is provided within the valve body, a second through-hole for the valve stem to move up and down is provided in the middle of the top surface, and a conical liquid outlet for fixing the lower end of the valve stem is provided in the middle of the bottom surface; an upper needle seat and a lower needle seat arranged up and down are provided in the needle disk, and a first sampling needle is passed through the middle of the upper needle seat and the lower needle seat, and a second sampling needle is passed through one side.

[0006] Furthermore, the self-centering handle includes a handle column and a handle rotatably arranged outside the upper end of the handle column. A vertically arranged screw is provided in the handle column, and a handle cover is fixed to the upper end. A screw reverser is installed outside the upper end of the screw, and a screw welding part is provided at the lower end. An upper spring is provided on the middle outer sleeve. The upper and lower ends of the upper spring are respectively abutted against the spring washer and the screw welding part. The outer side of the screw reverser is fixed to the handle through a circular welding jar, and the lower end of the screw welding part is fixedly connected to the upper end of the valve stem through a pin.

[0007] Furthermore, a support jar and a steel ball are provided between the circular welding jar and the handle column, wherein there are multiple steel balls and they are evenly distributed along the circumferential direction. A third O-ring is provided between the handle and the handle column, and an elastic retaining ring is fixed inside the upper end of the handle column, and the elastic retaining ring is against the upper end surface of the spring washer.

[0008] Furthermore, a first cylindrical cavity and a second cylindrical cavity are respectively provided at the upper and lower sections of the first through-hole, and a third cylindrical cavity is provided at the upper section of the second through-hole. An upper pressure ring, an upper sealing gasket and an upper sealing ring are sequentially provided in the first cylindrical cavity from top to bottom. The second cylindrical cavity and the third cylindrical cavity are adapted to each other, and are sequentially provided with a lower pressure ring, a disc spring, a disc spring gasket, a sealing ring and a lower sealing gasket from top to bottom.

[0009] Furthermore, the self-centering handle and the fixing column are fixedly connected by an internal hexagonal cylindrical head screw, and the fixing column and the valve body are fixedly connected by a second internal hexagonal cylindrical head screw. A pressing sleeve is inserted on the rear side of the valve body, and the lower spring and the first internal hexagonal cylindrical head screw arranged in front and behind are installed in the pressing sleeve to fix the valve body and the needle disk.

[0010] Furthermore, a first O-ring and a second O-ring are provided between the upper needle seat and the valve body.

[0011] The beneficial effects of the present invention are: ingenious structure, using a self-returning handle, which can realize manual lifting and automatic pressing back of the valve stem; when the valve stem is pressed down, the old liquid discharge operation before sampling can be realized through the blowing hole and the air cavity in the valve stem; when the valve stem is lifted, the sampling needle can realize automatic sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the front structure of the present invention.

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

[0014] Figure 3 It is a structural schematic diagram of the self-centering handle in the present invention.

[0015] List of reference numerals:

[0016] 1-valve body, 2-fixed column, 3-valve stem, 4-upper sealing ring, 5-upper sealing gasket, 6-upper pressure ring, 7-pin, 8-self-returning handle, 9-lower pressure ring, 10-disc spring, 11-disc spring gasket, 12-lower sealing ring, 13-lower sealing gasket, 14-first O-ring, 15-upper needle seat, 16-lower needle seat, 17-needle plate, 18-second sampling needle, 19-first sampling needle, 20-second O-ring, 2 1-first hexagon socket head screw, 22-lower spring, 23-pressing sleeve, 24-second hexagon socket head screw, 25-hexagon socket head screw, 26-handle column, 27-screw welding part, 28-upper spring, 29-handle, 30-spring washer, 31-third O-ring, 32-elastic retaining ring, 33-support ounce, 34-steel ball, 35-round welding ounce, 36-screw reverser, 37-handle cover. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0018] As shown in the figure, the present invention provides a new type of online sampling valve, including a self-returning handle 8, a fixed column 2, a valve body 1 and a needle disk 17 arranged in sequence from top to bottom; the self-returning handle 8 is used to control the up and down movement of the valve stem 3 in the middle of the fixed column 2; a first through-hole for the up and down movement of the valve stem 3 is provided in the middle of the fixed column 2, and a blowing hole connected to the first through-hole is provided on the side, and an air cavity connected to the lower end of the valve stem 3 is provided in the valve stem 3, and the upper end side of the air cavity is connected to the blowing hole; a transversely arranged fluid channel is provided in the valve body 1, a second through-hole for the up and down movement of the valve stem 3 is provided in the middle of the top surface, and a conical liquid outlet for fixing the lower end of the valve stem 3 is provided in the middle of the bottom surface; an upper needle seat 15 and a lower needle seat 16 arranged in the upper and lower parts are provided in the needle disk 17, and a first sampling needle 19 is passed through the middle of the upper needle seat 15 and the lower needle seat 16, and a second sampling needle 18 is passed through one side.

[0019] In this embodiment, the self-centering handle 8 includes a handle column 26 and a handle 29 rotatably arranged outside the upper end of the handle column 26. A vertically arranged screw is provided in the handle column 26, and a handle cover 37 is fixed to the upper end. A screw reverser 36 is installed outside the upper end of the screw, and a screw welding part 27 is fixed to the lower end. An upper spring 28 is provided on the middle outer sleeve, and the upper and lower ends of the upper spring 28 are respectively abutted against the spring washer 30 and the screw welding part 27. The outer side of the screw reverser 36 is fixed to the handle 8 by a circular welding jar 35, and the lower end of the screw welding part 27 is fixedly connected to the upper end of the valve stem 3 by a pin 7.

[0020] In this embodiment, a support jar 33 and a steel ball 34 are provided between the circular welding jar 35 and the handle column 26, wherein there are multiple steel balls 34 and they are evenly distributed along the circumferential direction. A third O-ring 31 is provided between the handle 29 and the handle column 26, and an elastic retaining ring 32 is fixed inside the upper end of the handle column 26, and the elastic retaining ring 32 is against the upper end surface of the spring washer 30.

[0021] In this embodiment, a first cylindrical cavity and a second cylindrical cavity are respectively provided at the upper and lower sections of the first perforation, and a third cylindrical cavity is provided at the upper section of the second perforation. The first cylindrical cavity is provided with an upper pressure ring 6, an upper sealing gasket 5 and an upper sealing ring 4 from top to bottom. The second cylindrical cavity and the third cylindrical cavity are adapted to each other, and are provided with a lower pressure ring 9, a disc spring 10, a disc spring gasket 11, a sealing ring 12 and a lower sealing gasket 13 from top to bottom.

[0022] In this embodiment, the self-centering handle 8 and the fixed column 2 are fixedly connected by a hexagon socket head screw 25, and the fixed column 2 and the valve body 1 are fixedly connected by a second hexagon socket head screw 24. A pressing sleeve 23 is inserted on the rear side of the valve body 1, and the pressing sleeve 23 is cooperated with the lower spring 22 and the first hexagon socket head screw 21 arranged in front and behind to fix the valve body 1 and the needle disk 17.

[0023] In this embodiment, a first O-ring 14 and a second O-ring 20 are provided between the upper needle seat 15 and the valve body 1 .

[0024] In the present invention, when no external force is applied, the lower end of the valve stem is inserted into the tapered liquid outlet, nitrogen enters the air cavity in the valve stem through the blowing hole, and is blown into the sampling bottle by the first sampling needle (the first sampling needle is shorter than the second sampling needle), and the second sampling needle is used to absorb the old liquid at the bottom of the sampling bottle, thereby realizing the operation of draining the old liquid in the sampling bottle; when sampling is required, the handle is rotated relative to the handle column (forward rotation) by external force, and under the action of the screw reverser, the screw is lifted, thereby lifting the valve stem and compressing the spring. At this time, the fluid enters the sampling bottle through the first sampling needle through the tapered liquid outlet (the first sampling needle is longer than the second sampling needle), and the second sampling needle is used to exhaust, thereby completing the sampling. Then, when the external force is released, the spring rebounds and drives the valve stem to press down and seal the tapered liquid outlet.

[0025] The technical means disclosed in the solutions of the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A new type of online sampling valve, characterized in that, The invention comprises a self-returning handle (8), a fixed column (2), a valve body (1) and a needle plate (17) connected in sequence from top to bottom; the self-returning handle (8) is used to control the valve stem (3) in the middle of the fixed column (2) to move up and down; the middle of the fixed column (2) is provided with a first through hole for the valve stem (3) to move up and down, and a blow hole connected to the first through hole is provided on the side; the valve stem (3) is provided with an air cavity connected to its lower end, and the upper end side of the air cavity is connected to the blow hole; the valve body (1) is provided with a transversely arranged fluid channel, the middle of the top surface is provided with a second through hole for the valve stem (3) to move up and down, and the middle of the bottom surface is provided with a tapered liquid outlet for fixing the lower end of the valve stem (3); the needle plate (17) is provided with an upper needle seat (15) and a lower needle seat (16) arranged up and down, the middle of the upper needle seat (15) and the lower needle seat (16) are provided with a first sampling needle (19) and a second sampling needle (18) on one side.

2. A novel online sampling valve according to claim 1, characterized in that: The self-centering handle (8) includes a handle column (26) and a handle (29) rotatably arranged outside the upper end of the handle column (26); a vertically arranged screw is provided in the handle column (26), and a handle cover (37) is fixed to the upper end; a screw reverser (36) is installed outside the upper end of the screw, a screw welding part (27) is provided at the lower end, and an upper spring (28) is provided on the middle outer sleeve; the upper and lower ends of the upper spring (28) are respectively abutted against the spring washer (30) and the screw welding part (27); the outer side of the screw reverser (36) is fixed to the handle (29) by a circular welding jar (35), and the lower end of the screw welding part (27) is fixedly connected to the upper end of the valve stem (3) by a pin (7).

3. A novel online sampling valve according to claim 2, characterized in that: A support jar (33) and a steel ball (34) are provided between the circular welding jar (35) and the handle column (26), wherein there are a plurality of steel balls (34) and they are evenly distributed along the circumferential direction. A third O-ring (31) is provided between the handle (29) and the handle column (26), and an elastic retaining ring (32) is fixed inside the upper end of the handle column (26), and the elastic retaining ring (32) abuts against the upper end surface of the spring washer (30).

4. A novel online sampling valve according to claim 1, characterized in that: A first cylindrical cavity and a second cylindrical cavity are respectively provided at the upper and lower sections of the first through-hole, and a third cylindrical cavity is provided at the upper section of the second through-hole. An upper pressure ring (6), an upper sealing gasket (5) and an upper sealing ring (4) are sequentially provided in the first cylindrical cavity from top to bottom. The second cylindrical cavity and the third cylindrical cavity are adapted to each other and are sequentially provided with a lower pressure ring (9), a disc spring (10), a disc spring gasket (11), a sealing ring (12) and a lower sealing gasket (13) from top to bottom.

5. A novel online sampling valve according to claim 1, characterized in that: The self-centering handle (8) and the fixing column (2) are fixedly connected by a hexagon socket head screw (25), and the fixing column (2) and the valve body (1) are fixedly connected by a second hexagon socket head screw (24). A pressing sleeve (23) is inserted into the rear side of the valve body (1), and a lower spring (22) and a first hexagon socket head screw (21) arranged in front and behind are installed in the pressing sleeve (23) to fix the valve body (1) and the needle plate (17).

6. A novel online sampling valve according to claim 1, characterized in that: A first O-ring (14) and a second O-ring (20) are provided between the upper needle seat (15) and the valve body (1).

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