Sampling valve

Abstract

The sampling valve comprises a valve body, a valve rod, a valve clack and a hand wheel, the valve rod is connected with the valve clack, the valve body is provided with an inlet end and an outlet end, the valve clack and the inlet end form sealing abutting, the hand wheel is connected with the valve rod and arranged outside the valve body, and a reset assembly is arranged between the valve rod and the valve clack. The reset assembly comprises a spring and a supporting sleeve, the valve rod is arranged on the supporting sleeve in a sliding mode, a telescopic groove is formed in the valve clack, the spring is arranged at one end of the supporting sleeve in a sleeving mode, the valve clack is clamped on the supporting sleeve and is in telescopic fit with the spring, and a cleaning assembly is arranged on the valve rod. The utility model aims to provide the sampling valve which has the advantage of no residue, prevents medium residue and avoids the problem of medium pollution in the valve body.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a sampling valve. BACKGROUND

[0002] The sampling valve is used for obtaining medium sample in pipeline or equipment, and is used in many occasions where chemical analysis of medium sample is often needed, and a special sampling valve is used, when the inlet end is closed, the medium enters the valve cavity and is discharged through the outlet end, and the medium is easily left on the inner wall of the valve body, which causes medium pollution of the valve body and has great hidden danger. UTILITY MODEL CONTENTS

[0003] The utility model provides a sampling valve, has the advantage that there is no residue, prevents the medium from being left, and avoids the problem that the medium pollutes the valve body.

[0004] To achieve the above object, the utility model provides the following technical scheme: a sampling valve, including valve body, valve rod, valve flap and hand wheel, the valve rod connects the valve flap, the valve body is opened and has inlet end and outlet end, the valve flap forms sealed abutting with the inlet end, the hand wheel is connected with the valve rod and is arranged outside the valve body, reset assembly is arranged between the valve rod and the valve flap, the reset assembly includes spring and support sleeve, the valve rod is arranged on the support sleeve, the valve flap is opened and has expansion slot, the spring is sleeved on one end of the support sleeve, the valve flap is clamped on the support sleeve and forms expansion cooperation with the spring, and the valve rod is provided with a cleaning assembly.

[0005] When the valve rod is driven upward by the hand wheel, the spring releases the contraction pressure, drives the cleaning assembly to move upward along the valve wall, realizes the first scraping movement of the valve wall, and the valve flap is also lifted upward, the medium enters the valve body through the inlet end, when the cleaning assembly moves downward along the valve wall, realizes the second scraping movement of the valve wall, the residual substances in the valve can flow out of the valve body through the inlet end, the valve rod compresses the spring downward, realizes the downward movement of the valve flap, forms the sealed abutting state with the inlet end, achieves the cleaning of the residual substances in the valve body, has the advantage that there is no residue, prevents the medium from being left, and avoids the problem that the medium pollutes the valve body.

[0006] The utility model is further provided with the following arrangement: the cleaning assembly includes a compression ring and a sealing ring, the compression ring is fixedly connected with the valve rod and is tightly arranged on the valve flap, and the sealing ring is fixedly arranged on the compression ring.

[0007] By adopting the technical scheme, the compression ring is fixedly connected to the valve rod, the sealing ring is sleeved on the outer circumferential surface of the valve rod, and the sealing ring is in close contact with the inner wall of the valve body, so that when the valve disc is closed downward, the sealing ring is in close contact with the valve wall and moves downward, and the scraping effect of the sealing ring on the residual substances on the inner wall of the valve body is achieved, thereby reducing the phenomenon of medium residue in the valve body.

[0008] The utility model further sets up, the sealing ring is protrudingly provided with a clamping protrusion on the side towards the compression ring, the compression ring is provided with a clamping groove for installing the clamping protrusion, and the sealing ring is clamped and fixed with the compression ring by being abuttingly arranged in the clamping groove through the clamping protrusion.

[0009] By adopting the technical scheme, the clamping effect of the sealing ring and the compression ring is improved, and the phenomenon of the sealing ring falling off when cleaning the valve body is avoided.

[0010] The utility model further sets up, the valve disc is provided with a plug-in interface in communication with the telescopic groove, one end of the support sleeve is arranged on the valve body, the other end passes through the plug-in interface and is arranged in the telescopic groove, the support sleeve is provided with an abutting flange outwardly protruding on the side towards the inlet end, one end of the spring is abuttingly arranged on the abutting flange, and the other end is arranged on the side close to the plug-in interface.

[0011] By the above technical scheme, the support sleeve is arranged in the telescopic groove through the plug-in interface, and can support the valve rod, wherein the abutting flange can cooperate with the valve disc through compression and release of the spring.

[0012] The utility model further sets up, the support sleeve is provided with a support portion outwardly protruding on the side towards the valve body, the valve body is provided with a fixing step for fixing the support portion, the support portion is provided with a support protrusion outwardly protruding on the side towards the fixing step, the fixing step is provided with a limiting opening corresponding to the support protrusion, and the support protrusion is abuttingly arranged in the limiting opening.

[0013] By adopting the technical scheme, the support portion supports the support sleeve, the fixing step can fix the support sleeve on the valve body, the support protrusion and the limiting opening are clamped, the valve body and the support sleeve are tightly connected, and the stability of the overall structure is further improved.

[0014] The utility model further sets up, the support sleeve is provided with a sliding groove for the compression ring to slide, and the compression ring is arranged in the sliding groove.

[0015] By adopting the technical scheme, the sliding groove can guide and position the compression ring when the compression ring slides, and the stability of the structure is further improved.

[0016] The utility model further sets up, the rubber sleeve is attached to the outer periphery of the valve clack, and one end of the rubber sleeve is in sealing abutment with the inlet end.

[0017] Through the above technical scheme, the rubber sleeve can enhance the impact resistance of the valve clack and further improve the sealing performance when the valve clack abuts against the inlet end.

[0018] The utility model further sets up, the rubber sleeve is attached to the outer periphery of the valve clack, and one end of the rubber sleeve is in sealing abutment with the inlet end.

[0019] Through the above technical scheme, the gap can avoid interference between structures and provide the valve rod with upward and downward sliding. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the whole structure schematic view of the utility model;

[0021] Figure 2 It is the partial enlarged view of the utility model A.

[0022] In the figure, 1 is a valve body, 2 is a valve rod, 3 is a valve clack, 4 is a hand wheel, 5 is an inlet end, 8 is an outlet end, 9 is a reset assembly, 10 is a spring, 11 is a support sleeve, 12 is an expansion slot, 13 is a cleaning assembly, 14 is a pressing ring, 15 is a sealing ring, 16 is a clamping convex part, 17 is a clamping slot, 18 is a plug-in interface, 19 is an abutment flange, 20 is a support part, 21 is a fixed step, 23 is a support convex part, 24 is a limiting opening, 25 is a sliding slot, and 26 is a rubber sleeve. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Embodiment: as shown in the accompanying drawings Figures 1-2The sampling valve shown in the drawing, a sampling valve, including valve body 1, valve stem 2, valve 3 and hand wheel 4, the valve stem 2 connects valve 3, the valve body 1 is provided with inlet end 5 and outlet end 8, the valve 3 and inlet end 5 form sealing abutting, the hand wheel 4 is connected with valve stem 2 and is arranged outside the valve body 1, the valve stem 2 is provided with reset component 9 between the valve 3, the reset component 9 includes spring 10 and support sleeve 11, the valve stem 2 is arranged on the support sleeve 11, the valve 3 is provided with telescopic groove 12, the spring 10 is sleeved on one end of the support sleeve 11, the valve 3 is clamped on the support sleeve 11 and is formed with telescopic cooperation with the spring 10, the valve stem 2 is provided with cleaning assembly 13, when the hand wheel 4 drives the valve stem 2 to rise upward, the spring 10 releases the contraction pressure, drives the cleaning assembly 13 to adhere to the valve wall and moves upward, realizes the first scraping movement to the valve wall, at the same time, the valve 3 rises upward, the medium enters the valve body 1 through the inlet end 5, when the cleaning assembly 13 adheres to the valve wall and moves downward, realizes the second scraping movement to the valve wall, can make the residual substances in the valve flow out of the valve body 1 through the inlet end 5, the valve stem 2 compresses the spring 10 downward, realizes the downward movement of the valve 3, forms the sealing abutting state with the inlet end 5, achieves the cleaning of the residual substances in the valve 1 body, has the advantages of no residual, prevents the medium residual, avoids the problem of medium pollution in the valve body 1.

[0025] As shown in the drawings, Figure 1 The cleaning assembly 13 includes a compression ring 14 (specifically arranged in a cross state) and a sealing ring 15 (specifically made of rubber), the compression ring 14 is fixedly connected with the valve stem 2 and is tightly arranged on the valve 3 (the compression ring 14 and the valve stem 2 are an integral structure, specifically welded fixedly connected), the sealing ring 15 is fixedly arranged on the compression ring 14, the compression ring 14 is fixedly connected with the valve stem 2, the sealing ring 15 is sleeved on the outer circumferential surface of the valve stem 2, forms the adhesion of the sealing ring 15 and the inner wall of the valve body 1, when the valve 3 is closed downward, the sealing ring 15 adheres to the valve wall and moves downward, achieves the scraping effect of the sealing ring 15 to the residual substances in the inner wall of the valve body 1, thereby reducing the phenomenon of medium residual in the valve body 1.

[0026] As shown in the drawings, Figure 2 The sealing ring 15 is provided with a clamping protrusion 16 (an integral structure) on one side of the compression ring 14, the compression ring 14 is provided with a clamping groove 17 for installing the clamping protrusion 16, the sealing ring 15 is tightly arranged in the clamping groove 17 through the clamping protrusion 16 and is fixedly connected with the compression ring 14, improves the clamping effect of the sealing ring 15 and the compression ring 14, avoids the phenomenon that the sealing ring 15 falls off when cleaning the valve body 1.

[0027] As shown in the drawings, Figure 1 And the drawings, Figure 2As shown, the valve 3 is provided with a plug-in interface 18 connected with the telescopic groove 12, the support sleeve 11 is arranged on the valve body 1 at one end and extends through the plug-in interface 18 and is arranged in the telescopic groove 12 at the other end, the support sleeve 11 is provided with an abutting flange 19 (as an integral structure) outwardly protruding towards the inlet end 5 side, the spring 10 is arranged on the abutting flange 19 at one end and is arranged on the side close to the plug-in interface 18 at the other end, the support sleeve 11 is arranged in the telescopic groove 12 through the plug-in interface 18, which can support the valve rod 2, and the abutting flange 19 can cooperate with the valve 3 through compression and release of the spring 10.

[0028] As shown in the accompanying drawings Figure 1 As shown, the support sleeve 11 is provided with a support portion 20 (as an integral structure) extending and arranged on the side of the valve body 1, the valve body 1 is provided with a fixing step 21 (as an integral structure) extending and arranged for fixing the support portion 20, the support portion 20 is provided with a support protrusion 23 (as an integral structure) protruding on the side of the fixing step 21, the fixing step 21 is provided with a limiting opening 24 corresponding to the support protrusion 23, and the support protrusion 23 is arranged in the limiting opening 24, the support portion 20 supports the support sleeve 11, the fixing step 21 can fix the support sleeve 11 on the valve body 1, and the support protrusion 23 and the limiting opening 24 are clamped to tightly connect the valve body 1 and the support sleeve 11, thereby further improving the stability of the overall structure.

[0029] As shown in the accompanying drawings Figure 1 As shown, the support sleeve 11 is provided with a sliding groove 25 for sliding of the compression ring 14, and the compression ring 14 is arranged in the sliding groove 25, the sliding groove 25 can guide and position the compression ring 14 when it slides, thereby further improving the stability of the structure.

[0030] As shown in the accompanying drawings Figure 2 As shown, the valve 3 is provided with a rubber sleeve 26 fitted on the outer periphery, one end of the rubber sleeve 26 is sealed and tightly arranged with the inlet end 5, and the rubber sleeve 26 can enhance the impact resistance of the valve 3 and further improve the sealing performance when the valve 3 is tightly arranged with the inlet end 5.

[0031] As shown in the accompanying drawings Figure 2 As shown, the abutting flange 19 is provided with a gap between the side of the inlet end 5 and the telescopic groove 12, which can avoid interference between structures and allow the valve rod 2 to slide up and down.

[0032] In the utility model, the terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only the relationship words determined for the convenience of narrating the structural relationship of various components or elements of the utility model, and are not specific to any component or element in the utility model, and cannot be understood as the limitation of the utility model.

Claims

1. A sampling valve, comprising a valve body (1), a valve stem (2), a valve disc (3), and a handwheel (4), wherein the valve stem (2) is connected to the valve disc (3), the valve body (1) has an inlet end (5) and an outlet end (8), the valve disc (3) and the inlet end (5) form a sealed contact, and the handwheel (4) is connected to the valve stem (2) and disposed outside the valve body (1), characterized in that: A reset assembly (9) is provided between the valve stem (2) and the valve disc (3). The reset assembly (9) includes a spring (10) and a support sleeve (11). The valve stem (2) is slidably disposed on the support sleeve (11). A telescopic groove (12) is provided in the valve disc (3). The spring (10) is sleeved on one end of the support sleeve (11). The valve disc (3) is clamped on the support sleeve (11) and forms a telescopic cooperation with the spring (10). A cleaning assembly (13) is provided on the valve stem (2).

2. A sampling valve according to claim 1, characterized in that: The cleaning component (13) includes a pressure ring (14) and a sealing ring (15). The pressure ring (14) is fixedly connected to the valve stem (2) and pressed onto the valve disc (3). The sealing ring (15) is snapped and fixed onto the pressure ring (14).

3. A sampling valve according to claim 2, characterized in that: The sealing ring (15) has a snap-fit ​​protrusion (16) protruding on the side facing the pressure ring (14). The pressure ring (14) has a snap-fit ​​groove (17) for installing the snap-fit ​​protrusion (16). The sealing ring (15) is pressed against the snap-fit ​​groove (17) through the snap-fit ​​protrusion (16) and is fixedly snapped to the pressure ring (14).

4. A sampling valve according to claim 1, characterized in that: The valve disc (3) is provided with an insertion interface (18) that communicates with the telescopic groove (12). One end of the support sleeve (11) is set on the valve body (1), and the other end passes through the insertion interface (18) and extends into the telescopic groove (12). The support sleeve (11) has an abutting flange (19) protruding outward on the side facing the inlet end (5). One end of the spring (10) is pressed on the abutting flange (19), and the other end is set on the side close to the insertion interface (18).

5. A sampling valve according to claim 1, characterized in that: The support sleeve (11) is bent and extended toward the valve body (1) to provide a support part (20). The valve body (1) is provided with a fixing step (21) for fixing the support part (20). The support part (20) is provided with a support protrusion (23) protruding toward the fixing step (21). The fixing step (21) is provided with a limiting opening (24) corresponding to the support protrusion (23). The support protrusion (23) is pressed and disposed in the limiting opening (24).

6. A sampling valve according to claim 5, characterized in that: The support sleeve (11) is provided with a sliding groove (25) for the pressure ring (14) to slide in, and the pressure ring (14) is slidably disposed in the sliding groove (25).

7. A sampling valve according to claim 4, characterized in that: A rubber sleeve (26) is fitted onto the outer periphery of the valve disc (3), and one end of the rubber sleeve (26) forms a seal with the inlet end (5).

8. A sampling valve according to claim 4, characterized in that: A gap is provided between the abutting flange (19) facing the inlet end (5) and the expansion groove (12).

Images