Sampling valve

Abstract

The utility model relates to a sampling valve which comprises a valve body, a sampling seat is arranged at the bottom of the valve body, and the sampling seat is communicated with a material channel in the valve body; an opening and closing piece for opening and closing the material taking opening between the sampling seat and the material channel is also arranged in the valve body in a lifting manner; a material adding channel is arranged on a center shaft of the opening and closing part, a connecting groove used for being connected with an external pipeline is formed in the outer side wall of the valve body, an opening in one side of the material adding channel is located in the outer side wall, facing the material taking opening, of the opening and closing part, and an opening in the other side of the material adding channel is used for being communicated with the connecting groove; and a sealing plug for sealing the opening of the feeding channel is in threaded connection with the interior of the connecting groove. The sampling device has the advantages that sampling is facilitated, the material adding function can be achieved, cost is saved, and the sampling device is more practical.

Description

Technical Field

[0001] The present application relates to the technical field of valve bodies, and in particular to a sampling valve. Background Art

[0002] The principle of the current sampling valve is that it is designed to obtain samples of media in pipelines or equipment, especially in situations where frequent chemical analysis of media samples is required. This valve allows for safe and stable sample extraction through a specific mechanism. The working principle of the sampling valve mainly involves the processes of sealing, sampling, and sample collection. When the valve is in the closed state, the spring tension or other pressure pushes the ejector pin to press the sealing rubber head against the opening in the tank wall to achieve a sealing effect. When sampling, steam or other sterilizing media is introduced to fill the sample storage chamber and the sampling port to make them sterile. Then, by operating the handle, the spring is contracted, the ejector pin is relaxed, and the sealing rubber head is separated from the opening in the tank wall. The sample flows out of the tank and is collected through the sampling port. After sampling is completed, the sealing rubber head is pressed against the opening again by the ejector pin to complete the sampling process.

[0003] The sampling valve in the related art usually only has the function of sampling. When other media need to be added to the pipeline, it can only be achieved by adding an additional set of feeding pipes and corresponding valves to the pipeline, which not only increases the cost but also brings great inconvenience to the adding work. Utility Model Content

[0004] The present application provides a sampling valve that is not only convenient for sampling but also capable of adding materials, thereby saving costs and achieving a more practical effect.

[0005] The present application provides a sampling valve that adopts the following technical solution:

[0006] A sampling valve comprises a valve body, a sampling seat is provided at the bottom of the valve body, and the sampling seat is communicated with the material channel inside the valve body; an opening and closing member is also provided in the valve body for opening and closing the material port between the sampling seat and the material channel; a feeding channel is provided on the central axis of the opening and closing member, and a connecting groove for connecting an external pipeline is provided on the outer wall of the valve body, one side opening of the feeding channel is located on the outer side wall of the opening and closing member facing the material port, and the other side opening of the feeding channel is used to communicate with the connecting groove; a sealing plug for sealing the opening of the feeding channel is threadedly connected to the connecting groove.

[0007] Preferably, a sealing ring is coaxially sleeved on the circumferential outer wall of the sealing plug, and the sealing ring and the inner wall of the connecting groove are pressed and sealed against each other.

[0008] Preferably, a sealing rubber head is sleeved on the circumferential outer wall of the opening and closing member. When the opening and closing member closes the material taking port between the sampling seat and the material channel, the sealing rubber head is inserted into the material taking port, and the sealing rubber head and the inner wall of the material taking port are in conflict with each other.

[0009] Preferably, the sampling seat is internally threadedly connected to a sealing seat located outside the valve body, and the sealing seat is used to re-seal the material intake port.

[0010] Preferably, a sampling box is detachably mounted on the outside of the sampling seat, and a placement table is provided inside the sampling box for placing the material container; the placement table is threadedly connected to the sampling box, and the placement table is lifted and lowered inside the sampling box.

[0011] Preferably, a plurality of clamping seats are provided on the top outer side wall of the sampling box, and the clamping seats are circumferentially spaced outside the sampling seat, and the clamping seats and the outer side wall of the sampling seat are clamped and fixed to each other.

[0012] Preferably, a fastener is movably provided on the clamping seat, and a plurality of mounting holes facing the corresponding fasteners are provided on the outer side wall of the sampling seat, and the ends of the fasteners are inserted into and threadedly connected to the respective relative mounting holes.

[0013] In summary, this application includes at least one of the following beneficial technical effects:

[0014] When it is necessary to add material to the material channel of the valve body, first ensure that the opening and closing piece keeps the material outlet in a closed state, then insert the external pipe and seal it in the connecting groove, and seal the outside of the material outlet again through the sealing seat; then gradually withdraw the opening and closing piece from the material outlet, and when the opening of the feeding channel rises to be connected with the connecting groove, inject the medium to be added into the feeding channel through the external pipe, and finally the medium will successfully flow into the material channel through the feeding channel; after the feeding work is completed, it is only necessary to insert the opening and closing piece into the feeding port again to close the feeding port again. At this time, the external pipe can be removed from the connecting groove. The whole feeding process is convenient and quick, without the need to add an additional valve body, which facilitates sampling and can also realize the function of feeding, saving costs and being more practical.

[0015] The sealing ring can greatly enhance the sealing performance of the sealing plug on the feeding channel;

[0016] The setting of the sampling box makes it convenient to place the material container on the placement table. In addition, by rotating the placement table, the height of the placement table can be adjusted, thereby facilitating the placement of material containers of different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 1 is a schematic cross-sectional view of the overall structure of an embodiment of the present application;

[0018] Figure 2 yes Figure 1 A cross-sectional diagram of the overall structure from another perspective;

[0019] Figure 3 yes Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0020] Figure 4 yes Figure 2 Schematic diagram of the enlarged structure at point B in the middle.

[0021] Explanation of the accompanying reference numerals: 1. Valve body; 10. Material channel; 11. Connecting groove; 2. Sampling seat; 20. Mounting hole; 3. Opening and closing part; 30. Material feeding channel; 31. Sealing rubber head; 4. Sealing plug; 40. Sealing ring; 5. Sealing seat; 6. Sampling box; 60. Placement table; 61. Clamping seat; 62. Fastener. DETAILED DESCRIPTION

[0022] The present application is further described in detail below with reference to the accompanying drawings.

[0023] The embodiment of the present application discloses a sampling valve.

[0024] Reference Figure 1 、 Figure 2 The sampling valve includes a valve body 1, with a sampling seat 2 fixedly mounted on the bottom outer wall of the valve body 1. The sampling seat 2 is connected to a material channel 10 provided inside the valve body 1. The material channel 10 is used to allow the medium to flow within the valve body 1. An opening and closing member 3 is also provided in the valve body 1 for opening and closing the material outlet between the sampling seat 2 and the material channel 10. A valve stem is connected to the internal thread of the valve body 1. The opening and closing member 3 is coaxial with the valve stem and is rotatably mounted on the valve stem. By rotating the valve stem, the valve stem drives the opening and closing member 3 to rise and fall in a direction closer to or away from the material outlet.

[0025] like Figure 3 、 Figure 4 As shown, a feeding channel 30 is provided on the central axis of the opening and closing member 3. A connecting groove 11 for connecting an external pipe is provided on the outer wall of the valve body 1. The inner wall of the connecting groove 11 is provided with an internal thread. The external pipe inserted into the connecting groove 11 is threadedly connected to the inner wall of the connecting groove 11. The connecting groove 11 is located on the ascending path of the top opening of the feeding channel 30. The bottom opening of the feeding channel 30 is located on the bottom outer wall of the opening and closing member 3 facing the material discharging port. The top opening of the feeding channel 30 is used to communicate with the connecting groove 11. When the top opening of the feeding channel 30 rises with the opening and closing member 3 until it communicates with the connecting groove 11, the bottom of the opening and closing member 3 will exit the material discharging port.

[0026] like Figure 3 、 Figure 4As shown, a sealing plug 4 is threadedly connected to the connecting groove 11, sealing the top opening of the feeding channel 30. A sealing ring 40 is coaxially sleeved on the circumferential outer wall of the sealing plug 4, which compresses and seals against the inner wall of the connecting groove 11. After the external pipe is removed from the connecting groove 11, the sealing plug 4 is screwed back into the connecting groove 11. The sealing plug 4 effectively prevents the medium in the feeding channel 10 from flowing out of the feeding channel 30.

[0027] like Figure 3 、 Figure 4 As shown, a sealing rubber head 31 is fixedly mounted on the circumferential outer wall of the opening / closing member 3. This sealing rubber head 31 is made of an elastic rubber material. When the bottom of the opening / closing member 3 closes the material dispensing opening between the sampling seat 2 and the material channel 10, the sealing rubber head 31 is inserted into the material dispensing opening and contacts the inner wall of the material dispensing opening. This sealing rubber head 31 further enhances the sealing effect of the opening / closing member 3 on the material dispensing opening.

[0028] like Figure 3 、 Figure 4 As shown, the sampling seat 2 is internally threadedly connected to a sealing seat 5 located on the exterior of the valve body 1. This sealing seat 5 is used to reseal the material outlet from the outside. A sampling box 6 is removably mounted on the exterior of the sampling seat 2. Within this box 6 is a placement table 60, above which a material container is placed. A screw is fixed to the bottom of the placement table 60, which is threadedly connected to the sampling box 6 and allows the placement table 60 to be raised and lowered within the sampling box 6.

[0029] The arrangement of the sampling box 6 facilitates the placement of the material container on the placement table 60. In addition, by rotating the placement table 60, the height of the placement table 60 can be raised and lowered, thereby facilitating the placement of material containers of different heights.

[0030] like Figure 3 、 Figure 4 As shown, a plurality of clamping seats 61 are integrally formed on the top outer wall of the sampling box 6. The clamping seats 61 are evenly spaced circumferentially around the outside of the sampling seat 2, and the top of the clamping seat 61 and the outer wall of the sampling seat 2 are fixed to each other by being clamped.

[0031] like Figure 3 As shown, each clamping seat 61 is movably provided with a fastener 62, which in this embodiment is a bolt. The outer wall of the sampling seat 2 is provided with a plurality of mounting holes 20, each facing a corresponding fastener 62. The ends of the fasteners 62 are horizontally inserted and threaded into the respective mounting holes 20. The sampling box 6 is fixedly mounted to the outside of the sampling seat 2 via the fasteners 62.

[0032] The implementation principle is as follows: when it is necessary to add material to the material channel 10 of the valve body 1, first ensure that the opening and closing member 3 keeps the material outlet closed, then unscrew the sealing plug 4 from the connecting groove 11, and then insert the external pipe and seal it in the connecting groove 11, and re-block the outside of the material outlet through the sealing seat 5. Then gradually withdraw the opening and closing member 3 from the material outlet, and when the top opening of the feeding channel 30 rises to be connected with the connecting groove 11, the medium to be added is injected into the feeding channel 30 through the external pipe, and finally the medium successfully flows into the material channel 10 through the feeding channel 30. After the feeding work is completed, it is only necessary to insert the opening and closing member 3 back into the feeding port to close the feeding port again. At this time, the external pipe can be removed from the connecting groove 11. The entire feeding process is convenient and quick, without the need to add an additional valve body, which facilitates sampling and can also achieve the function of feeding, saving costs and being more practical.

[0033] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A sampling valve, comprising a valve body (1), a sampling seat (2) provided at the bottom of the valve body (1), the sampling seat (2) being in communication with a material channel (10) inside the valve body (1); an opening and closing member (3) for opening and closing a material port between the sampling seat (2) and the material channel (10) being provided in the valve body (1); and characterized in that: A feeding channel (30) is provided on the central axis of the opening and closing member (3), and a connecting groove (11) for connecting an external pipeline is provided on the outer wall of the valve body (1). One side opening of the feeding channel (30) is located on the outer wall of the opening and closing member (3) facing the material outlet, and the other side opening of the feeding channel (30) is used to communicate with the connecting groove (11); a sealing plug (4) for sealing the opening of the feeding channel (30) is connected to the inner thread of the connecting groove (11).

2. The sampling valve according to claim 1, characterized in that: A sealing ring (40) is coaxially sleeved on the circumferential outer wall of the sealing plug (4), and the sealing ring (40) and the inner wall of the connecting groove (11) are pressed and sealed against each other.

3. The sampling valve according to claim 2, characterized in that: A sealing rubber head (31) is sleeved on the circumferential outer wall of the opening and closing member (3). When the opening and closing member (3) closes the material taking port between the sampling seat (2) and the material channel (10), the sealing rubber head (31) is inserted into the material taking port, and the sealing rubber head (31) and the inner wall of the material taking port contact each other.

4. The sampling valve according to claim 1, characterized in that: The sampling seat (2) is internally threadedly connected to a sealing seat (5) located outside the valve body (1), and the sealing seat (5) is used to re-seal the material taking port.

5. The sampling valve according to claim 1, characterized in that: A sampling box (6) is detachably mounted on the outside of the sampling seat (2), and a placement table (60) is provided inside the sampling box (6). The placement table (60) is used for placing a material container; the placement table (60) is threadedly connected to the sampling box (6), and the placement table (60) is lifted and arranged inside the sampling box (6).

6. The sampling valve according to claim 5, characterized in that: A plurality of clamping seats (61) are provided on the top outer wall of the sampling box (6), and the clamping seats (61) are arranged in a circumferentially spaced ring outside the sampling seat (2). The clamping seats (61) and the outer wall of the sampling seat (2) are mutually clamped and fixed.

7. The sampling valve according to claim 6, characterized in that: A fastener (62) is movably provided on the clamping seat (61), and a plurality of mounting holes (20) facing the corresponding fasteners (62) are provided on the outer wall of the sampling seat (2), and the ends of the fasteners (62) are inserted into and threadedly connected to the respective opposite mounting holes (20).

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