Shut-off combination valve

Abstract

The utility model provides a cut-off combination valve, and belongs to the technical field of machinery. The problem of poor stability in the prior art is solved. The cut-off combination valve comprises a valve body with a cavity inside, an inlet and an outlet which are communicated with an inner cavity of the valve body are formed in the left end and the right end of the valve body respectively, the cut-off combination valve further comprises a connecting pipe, a valve cover, a flow guide channel and a switching assembly, the interior of the valve cover is a cavity, the upper end of the valve cover is open, and the upper end of the valve cover is detachably connected to the lower portion of the valve body. The upper end of the connecting pipe is positioned and connected between the upper end of the valve cover and the valve body, the valve body and the connecting pipe are communicated through the flow guide channel, the flow guide channel is closed by the switching assembly in an initial state, and an inner cavity of the valve body can be communicated with the connecting pipe through the flow guide channel after the switching assembly is opened by applying external force. The cut-off combination valve is high in stability.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical technical field relates to a cut-off combination valve. BACKGROUND

[0002] Fluid medium sampling in piping systems refers to taking representative samples from running pipelines for analysis and monitoring. This is crucial for ensuring product quality, environmental protection, and process control.

[0003] Sampling purposes include but are not limited to the following:

[0004] 1. Quality control: Ensure that products meet specifications.

[0005] 2. Environmental monitoring: Assess whether emissions comply with environmental regulations.

[0006] 3. Process optimization: Adjust production process parameters by monitoring fluid characteristics in real time.

[0007] 4. Safety checks: Detect potential hazardous substances to prevent accidents.

[0008] Existing fluid medium sampling in piping systems usually uses shunt sampling, i.e., setting a three-way valve in the piping system. Due to the complex structure of the three-way valve, and the possibility of accidental opening of the three-way valve, the actual sampling operation is unstable and poses a safety hazard. SUMMARY

[0009] The utility model aims at the above problems existing in prior art, provides a cut-off combination valve which can quickly realize fluid medium sampling of piping system.

[0010] The utility model can achieve the purpose through the following technical scheme:

[0011] A cut-off combination valve, comprising a valve body with an internal cavity, the left and right ends of the valve body are respectively an inlet and an outlet communicating with the internal cavity, characterized in that it further comprises a connecting pipe, a valve cover, a flow guide channel and a switching assembly, the internal cavity of the valve cover is empty and the upper end is open, the valve cover is detachably connected to the lower part of the valve body at the upper end, the upper end of the connecting pipe is positioned and connected between the upper end of the valve cover and the valve body, the flow guide channel connects the valve body and the connecting pipe, the switching assembly closes the flow guide channel in the initial state, and the internal cavity of the valve body can communicate with the connecting pipe through the flow guide channel after the switching assembly is opened by applying external force.

[0012] In the above-mentioned cut-off combination valve, the flow guide channel comprises a vertical channel one and a horizontal channel two, the upper end of the channel one communicates with the internal cavity of the valve body, the inner end of the channel two communicates with the side of the channel one, and the lower end of the channel two communicates with the upper end of the connecting pipe.

[0013] In the above-mentioned cut-off combination valve, the switching assembly comprises a guide cylinder, a pressure rod and a spring, the guide cylinder is transversely arranged and fixed on the valve body, the pressure rod is arranged in the guide cylinder, the spring is sleeved on the pressure rod and the two ends of the spring are respectively arranged on the pressure rod and the guide cylinder, the inner end of the pressure rod has a tendency to abut against the outer end of the passage two under the elastic force of the spring, and the outer end of the pressure rod extends out of the guide cylinder.

[0014] In the above-mentioned cut-off combination valve, the inner end of the pressure rod is fixed with a flexible sealing gasket, and the sealing gasket abuts against the outer end of the passage two.

[0015] In the above-mentioned cut-off combination valve, the inner end of the pressure rod has a recessed connecting seat, the sealing gasket is matched with the connecting seat and is tightly connected at the connecting seat.

[0016] In the above-mentioned cut-off combination valve, the guide cylinder is threadedly connected with the valve body.

[0017] In the above-mentioned cut-off combination valve, there is a sealing ring between the guide cylinder and the valve body.

[0018] In the above-mentioned cut-off combination valve, a handle is further arranged, the middle part of the handle is hingedly connected with the outer end of the pressure rod, the handle is vertical in the initial state and the side part of the handle can contact the outer end surface of the pressure rod, and the inner end of the handle has a planar positioning surface which can contact the outer end surface of the pressure rod after the handle is swung around the hinge.

[0019] In the above-mentioned cut-off combination valve, the handle is cuboid-shaped, the inner end of the handle has a U-shaped recessed connecting recess, the outer end of the pressure rod has a protruding hinge segment, the hinge segment is embedded in the connecting recess of the handle and the two are hingedly connected through a pin shaft, and the number of the positioning surfaces is two and the two positioning surfaces are respectively located at the two ends of the U-shaped connecting recess of the handle.

[0020] In the above-mentioned cut-off combination valve, the inner end of the valve cover has a recessed step seat, the outer side of the upper end of the connecting pipe has a protruding connecting edge, and the connecting edge is tightly pressed between the step seat and the valve body.

[0021] Compared with the prior art, in the above-mentioned cut-off combination valve, the valve cover and the valve body are detachably connected, so that when the valve cover is replaced by a corresponding pipeline, the fluid medium in the valve body can smoothly enter the corresponding pipeline, and the fluid medium in the valve body is convenient to detect. It can be seen that in the sampling state, the valve body is connected with the corresponding pipeline, and the connecting pipe is stably positioned. In the non-sampling state, the valve cover is connected with the valve body, and the connecting pipe is stably positioned. That is, the connecting pipe and the valve body are also detachably connected, and the connecting pipe of the corresponding type can be replaced according to the actual situation, thereby effectively improving the applicability.

[0022] Moreover, during the sampling process, simply changing the corresponding pipeline and switching components is sufficient, resulting in fast and stable sampling with high practical value. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the shut-off combination valve.

[0024] Figure 2 This is a cross-sectional structural diagram of the shut-off combination valve.

[0025] In the diagram, 1 is the valve body; 1a is the inlet; 1b is the outlet; 2 is the connecting pipe; 2a is the connecting edge; 3 is the valve cover; 3a is the stepped seat; 4 is the first channel; 5 is the second channel; 6 is the guide tube; 7 is the pressure rod; 7a is the connecting seat; 7b is the hinged section; 7c is the retaining edge; 8 is the spring; 9 is the sealing gasket; 10 is the handle; 10a is the connecting notch; and 10b is the positioning surface. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that when a component is said to be "mounted on" another component, it can be directly mounted on the other component or may be interspersed with a component. When a component is said to be "set on" another component, it can be directly set on the other component or may be interspersed with a component. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or may be interspersed with a component.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] like Figure 1 and Figure 2As shown, the present cut-off combination valve comprises a valve body 1 with an internal cavity, an inlet 1a and an outlet 1b at the left and right ends of the valve body 1 respectively, a connecting pipe 2, a valve cover 3, a flow guide channel and a switching assembly, the valve cover 3 has an internal cavity and an open upper end, the valve cover 3 is detachably connected to the lower part of the valve body 1, the upper end of the connecting pipe 2 is positioned and connected between the upper end of the valve cover 3 and the valve body 1, the flow guide channel connects the valve body 1 and the connecting pipe 2, the switching assembly closes the flow guide channel in the initial state, and the valve body 1 internal cavity can communicate with the connecting pipe 2 through the flow guide channel after the switching assembly is opened by applying external force.

[0030] When the cut-off combination valve is normally used, the switching assembly is in the closed state, and the flow guide channel is closed. At this time, the fluid medium passing through the valve body 1 will not enter the connecting pipe 2 from the flow guide channel.

[0031] Of course, at this time, the valve cover 3 positions the connecting pipe 2 between the valve cover 3 and the valve body 1, avoiding the exposure of the connecting pipe 2 when not sampling.

[0032] When sampling operation is needed.

[0033] First, the valve cover 3 is detached, and the corresponding pipeline is connected to the valve body 1. At this time, the connecting pipe 2 is in communication with the corresponding pipeline. Then, external force is applied to make the switching assembly work, and the valve body 1 internal cavity is in stable communication with the connecting pipe 2 through the flow guide channel after the switching assembly is opened. The fluid medium in the valve body 1 stably enters the corresponding pipeline. Of course, the corresponding pipeline here refers to the sampling and analysis pipeline.

[0034] After the sampling operation is completed, the switching assembly is switched to the closed state again. Then, the corresponding pipeline is detached, and the valve cover 3 is reconnected to the lower part of the valve body 1.

[0035] The flow guide channel comprises a vertically arranged channel one 4 and a horizontally arranged channel two 5, the upper end of the channel one 4 is in communication with the internal cavity of the valve body 1, the inner end of the channel two 5 is in communication with the side part of the channel one 4, and the lower end of the channel two 5 is in communication with the upper end of the connecting pipe 2.

[0036] The switching assembly comprises a guide cylinder 6, a pressing rod 7 and a spring 8, the guide cylinder 6 is horizontally arranged and fixed to the valve body 1, the pressing rod 7 is arranged in the guide cylinder 6, the spring 8 is sleeved on the pressing rod 7, and the two ends of the spring 8 act on the pressing rod 7 and the guide cylinder 6 respectively, the inner end of the pressing rod 7 has a tendency to abut against the outer end of the channel two 5 under the elastic force of the spring 8, and the outer end of the pressing rod 7 extends out of the guide cylinder 6.

[0037] The guide cylinder 6 is used for guiding the pressing rod 7. In the present embodiment, the inner end of the pressing rod 7 has a protruding stop edge 7c.

[0038] The stop edge 7c has two functions:

[0039] One, limit the one end of the spring 8;

[0040] Two, limit the pressure bar 7, when the stopper 7c abuts against the guide cylinder 6, the pressure bar 7 can be prevented from being separated from the guide cylinder 6.

[0041] The inner end of the pressure bar 7 is fixedly connected with a flexible sealing pad 9, and the sealing pad 9 abuts against the outer end of the second channel 5.

[0042] The sealing pad 9 is made of rubber material, and the sealing pad 9 can effectively improve the sealing performance between the pressure bar 7 and the guide channel.

[0043] The inner end of the pressure bar 7 has a recessed connecting seat 7a, and the sealing pad 9 is matched with the connecting seat 7a and is tightly connected with the connecting seat 7a.

[0044] Such a structure can stably connect the sealing pad 9 at the inner end of the pressure bar 7.

[0045] The guide cylinder 6 is threadedly connected with the valve body 1.

[0046] The guide cylinder 6 and the valve body 1 have a sealing ring therebetween.

[0047] Further comprising a handle 10, the middle part of the handle 10 is hingedly connected with the outer end of the pressure bar 7, the handle 10 is vertical in the initial state, and the side part of the handle 10 can contact the outer end surface of the pressure bar 7, the inner end of the handle 10 has a planar positioning surface 10b, and the positioning surface 10b can contact the outer end surface of the pressure bar 7 when the handle 10 swings around the hinge part.

[0048] When the side part of the handle 10 contacts the outer end surface of the pressure bar 7, the inner end of the pressure bar 7 abuts against the guide channel under the elastic force of the spring 8, and at this time, the guide channel is closed.

[0049] When an external force is applied to move the handle 10, the positioning surface 10b of the handle 10 contacts the end surface of the pressure bar 7, and at this time, positioning can be formed under the elastic force of the spring 8. The pressure bar 7 moves to the outer end, and at this time, the inner end of the pressure bar 7 is separated from the guide channel.

[0050] The handle 10 is a cuboid, the inner end of the handle 10 has a U-shaped recessed connecting recess 10a, the outer end of the pressure bar 7 has a protruding hinge segment 7b, the hinge segment 7b is embedded in the connecting recess 10a of the handle 10 and is hingedly connected through a pin shaft, and the number of the positioning surfaces 10b is two, and the two positioning surfaces 10b are respectively located at the two ends of the U-shaped connecting recess 10a of the handle 10.

[0051] The hinge segment 7b is embedded in the connecting recess 10a and hingedly connects the pressure bar 7 and the handle 10 through the pin shaft, and such a structure can stably connect the pressure bar 7 and the handle 10.

[0052] The valve cover 3 has a recessed step seat 3a at the inner port, and the connecting pipe 2 has a protruding connecting edge 2a at the outer side of the upper end, which is tightly pressed between the step seat 3a and the valve body 1.

[0053] Such structure can stably position the connecting pipe 2 in the valve cover 3, avoiding loosening of the connecting pipe 2.

[0054] In the present cut-off combined valve, the valve cover and the valve body are detachably connected, so that when the valve cover is replaced by a corresponding pipeline, the fluid medium in the valve body can smoothly enter the corresponding pipeline, facilitating detection of the fluid medium in the valve body. It can be seen that in the sampling state, the present cut-off combined valve relies on the connection of the corresponding pipeline and the valve body, and the connecting pipe is stably positioned. In the non-sampling state, the valve cover and the valve body are connected, and the connecting pipe is stably positioned. That is, the connecting pipe and the valve body are also detachably connected, and the connecting pipe can be replaced according to the actual situation to adapt to the type, effectively improving the applicability.

[0055] Moreover, during the sampling process, the connecting corresponding pipeline is replaced, and the switching assembly is operated, so that the sampling is fast and stable, and has high practical value.

[0056] The technical features of the above-mentioned embodiments can be combined arbitrarily, and in order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0057] Those skilled in the art should recognize that the above embodiments are used to illustrate the present application, and are not used as a limitation of the present application, and as long as the above embodiments are appropriately changed and varied within the scope of the present application, they fall within the scope of the present application.

Claims

1. A combined valve for cutting off, comprising a valve body (1) having an internal cavity, the valve body (1) having an inlet (1a) and an outlet (1b) at left and right ends thereof respectively, which are in communication with the internal cavity of the valve body (1), characterized in that, It also comprises a connecting pipe (2), a valve cover (3), a flow channel and a switching assembly, the valve cover (3) is hollow and has an open upper end, the valve cover (3) is detachably connected to the lower part of the valve body (1), the upper end of the connecting pipe (2) is positioned and connected between the upper end of the valve cover (3) and the valve body (1), the flow channel connects the valve body (1) and the connecting pipe (2), the switching assembly closes the flow channel in the initial state, and the valve body (1) can communicate with the connecting pipe through the flow channel after the switching assembly is opened by applying external force.

2. The shut-off modular valve of claim 1, wherein, The flow channel comprises a vertically arranged channel one (4) and a transversely arranged channel two (5), the upper end of the channel one (4) communicates with the inner cavity of the valve body (1), the inner end of the channel two (5) communicates with the side of the channel one (4), and the lower end of the channel two (5) communicates with the upper end of the connecting pipe (2).

3. The shut-off modular valve of claim 2, wherein, The switching assembly comprises a guide cylinder (6), a pressing rod (7) and a spring (8), the guide cylinder (6) is transversely arranged and fixed to the valve body (1), the pressing rod (7) is arranged in the guide cylinder (6), the spring (8) is sleeved on the pressing rod (7), and the two ends of the spring (8) respectively act on the pressing rod (7) and the guide cylinder (6), the inner end of the pressing rod (7) has a tendency to abut against the outer end of the channel two (5) under the elastic force of the spring (8), and the outer end of the pressing rod (7) extends out of the guide cylinder (6).

4. The shut-off modular valve of claim 3, wherein, The inner end of the pressing rod (7) is fixedly connected with a flexible sealing gasket (9), and the sealing gasket (9) abuts against the outer end of the channel two (5).

5. The shut-off modular valve of claim 4, wherein, The inner end of the pressing rod (7) has a recessed connecting seat (7a), the sealing gasket (9) is matched with the connecting seat (7a), and the sealing gasket (9) is tightly connected at the connecting seat (7a).

6. The shut-off modular valve of claim 5, wherein, The guide cylinder (6) is threadedly connected with the valve body (1).

7. The shut-off modular valve of claim 6, wherein, There is a sealing ring between the guide cylinder (6) and the valve body (1).

8. The shut-off modular valve of claim 7, wherein, It also comprises a handle (10), the middle part of the handle (10) is hingedly connected to the outer end of the pressing rod (7), the handle (10) is vertical in the initial state, the side of the handle (10) can contact the outer end surface of the pressing rod (7), the inner end of the handle (10) has a planar positioning surface (10b), and the positioning surface (10b) can contact the outer end surface of the pressing rod (7) after the handle (10) is swung around the hinge.

9. The shut-off modular valve of claim 8, wherein, The handle (10) is in the shape of a rectangular solid, the inner end of the handle (10) has a U-shaped recessed connecting recess (10a), the outer end of the pressing rod (7) has a protruding hinge segment (7b), the hinge segment (7b) is embedded in the connecting recess (10a) of the handle (10) and is hingedly connected thereto by a pin shaft, and the number of the positioning surfaces (10b) is two, and the two positioning surfaces (10b) are respectively located at the two ends of the U-shaped connecting recess of the handle (10).

10. The shut-off modular valve of claim 9, wherein, The inner end of the valve cover (3) has a recessed step seat (3a), the outer side of the upper end of the connecting pipe (2) has a protruding connecting edge (2a), and the connecting edge (2a) is tightly pressed between the step seat (3a) and the valve body (1).

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