Sample valve with misoperation prevention

Abstract

The utility model provides a kind of sampling valve of anti-misoperation belongs to sampling valve technical field, including valve body, the one end of the both ends of valve body is fixedly connected with the side pipe, the other end of two the side pipe is equipped with flange, the lower portion of valve body is connected with sampling bottle by screw thread, the top of valve body is equipped with valve rod sleeve, the valve rod sleeve is connected with valve rod by screw thread, the bottom of valve rod is fixedly installed with plug core.The utility model solves the problem that most sampling valves lack effective anti-misoperation mechanism, the operating components such as hand wheel and valve rod are directly exposed without locking or limiting structure, which can cause accidental rotation of valve rod due to accidental touch, collision or misoperation of personnel, thereby causing abnormal opening of flow channel, medium leakage, sampling abnormalities and other problems, and affecting the stability of production process.

Description

Technical Field

[0001] This utility model belongs to the field of sampling valve technology, specifically relating to a sampling valve that prevents misoperation. Background Technology

[0002] Sampling valves are specialized valves used in industrial equipment to safely extract samples of media from pipelines or equipment. They are mainly used in industries such as chemical, power, pharmaceutical, and food processing where frequent chemical analysis is required. Their primary function is to obtain representative samples while ensuring system sealing, and they are suitable for sampling liquids, gases, and media containing trace amounts of solids.

[0003] Most sampling valves lack effective anti-misoperation mechanisms. Their operating components, such as handwheels and valve stems, are directly exposed and lack locking or limiting structures. They are prone to accidental rotation of the valve stem due to accidental touch, collision, or misoperation by personnel, which can lead to abnormal opening of the flow channel, causing problems such as media leakage and abnormal sampling, and affecting the stability of the production process. Therefore, a sampling valve to prevent misoperation is proposed. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] Given the following technical problems in the existing technology: most sampling valves lack an effective anti-misoperation mechanism, and their operating parts such as handwheels and valve stems are directly exposed without locking or limiting structures. They are prone to accidental rotation of the valve stem due to accidental touch, collision or misoperation by personnel, which can lead to abnormal opening of the flow channel, causing problems such as media leakage and abnormal sampling, and affecting the stability of the production process.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a sampling valve for preventing misoperation, comprising a valve body, both ends of which are fixedly connected to one end of a side tube, and the other ends of the two side tubes are each fitted with a flange. A sampling bottle is threadedly connected to the lower part of the valve body, a valve stem sleeve is installed on the top of the valve body, a valve stem is threadedly connected to the valve stem sleeve, a plug is fixedly installed at the bottom of the valve stem, a force-applying component is installed on the top of the valve stem, an external limiting component is installed on the outside of the force-applying component, and a locking component is connected to the external limiting component.

[0007] By adopting the above technical solution, the valve body is fixedly connected to the external pipeline through the side pipe and flange. The sampling bottle is used to receive the sampling medium. The valve stem sleeve provides support and guidance for the valve stem. The valve stem drives the plug core to move up and down through the threaded drive to realize the opening and closing of the valve body sampling. The force application component provides the operating carrier for the rotation of the valve stem. The external limiting component and the locking component work together to form an anti-misoperation mechanism. Only after the correct unlocking can the force application component drive the valve stem to move, avoiding media leakage or sampling abnormalities caused by accidental contact.

[0008] Furthermore, a threaded groove is provided at the top of the valve stem, and the external limiting component is located in the threaded groove.

[0009] By adopting the above technical solution, the threaded groove at the top of the valve stem provides an installation base for the external limiting component. The external limiting component and the valve stem are detachably fixed through the threaded connection, while ensuring that the external limiting component and the valve stem maintain a stable relative position during operation.

[0010] Furthermore, the outer limiting component includes an inner sleeve, the outer side of which is threadedly connected to a threaded groove. The bottom of the inner sleeve has slots on both sides, and the two side walls of the slots have sliding grooves. One end of a spring is connected to the cavity wall on the side of the two opposite sliding grooves that are far apart from each other, and the other end of the spring is connected to a limit block.

[0011] By adopting the above technical solution, the inner sleeve is fixed to the threaded groove of the valve stem by threads. The slot is used to cooperate with the locking block of the force application component to realize power transmission. In this way, when the handwheel pulls the locking block to rotate, it drives the valve stem to rotate. The spring is always in a compressed state, so that the two limit blocks contact each other. The limit blocks can slide in the groove. When the locking block of the force application component slides into the slot, it can squeeze the limit block into the groove and pass over the limit block. In this way, when the handwheel is turned, the power can be transmitted to the valve stem through the locking block and the inner sleeve, so that the valve stem rotates. Under the action of the spring force, the locking block is laterally limited to prevent the locking block from accidentally dislodging from the slot. When not in use, the locking block is also restricted to be outside the slot. In this way, when sampling is not required, the handwheel will not drive the valve stem to rotate, so that accidental sampling will not be caused by misoperation.

[0012] Furthermore, a protruding retaining ring is provided at the bottom of the periphery of the threaded groove, the protruding retaining ring contacts the bottom wall of the inner sleeve, and the limiting block matches the sliding groove.

[0013] By adopting the above technical solution, the protruding retaining ring at the bottom of the threaded groove plays an axial limiting role for the inner sleeve, preventing the inner sleeve from being excessively screwed into the threaded groove and affecting the locking block. The shape and size of the limiting block match the slide groove, ensuring that the limiting block slides smoothly in the slide groove.

[0014] Furthermore, the locking assembly includes a receiving port one opened at the top of the inner sleeve and a receiving port two opened at the top of the valve stem. A locking strip is slidably connected in the receiving port one, and a locking rod is fixedly connected to the top of the locking strip. A lifting block is fixedly connected to the top of the locking rod through the top wall of the receiving port one, and a spring two is sleeved on the outside of the locking rod.

[0015] By adopting the above technical solution, the receiving port one provides installation space for the locking strip, locking rod and spring two. Spring two always presses against the locking strip, keeping the locking strip in the receiving port two for restriction. In this way, when the handwheel drives the valve stem to rotate, the inner sleeve does not disengage from the valve stem thread. Pulling the lifting block upward can drive the locking rod and locking strip to move upward, so that the locking strip disengages from the receiving port two, releasing the circumferential restriction between the inner sleeve and the valve stem. This allows the inner sleeve to separate from the valve stem.

[0016] Furthermore, one end of the second spring is fixedly connected to the top wall of the second receiving port, and the other end of the second spring is connected to the retaining strip, which matches the second receiving port.

[0017] By adopting the above technical solution, the second spring ensures that the locking strip is stably engaged in the second receiving port, maintaining the circumferential locking state of the inner sleeve and the valve stem.

[0018] Furthermore, the force-applying component includes an inner rod that is movably inserted into an inner sleeve. Both sides of the bottom of the inner rod are connected to locking blocks by screws. A handwheel is installed on the top of the inner rod. The locking blocks match the locking slots, and the two opposing limiting blocks are arc-shaped on the side that is close to each other.

[0019] By adopting the above technical solution, the handwheel provides the operator with a point of rotation force. Rotating the handwheel can drive the inner rod to rotate synchronously. The locking block at the bottom of the inner rod matches the locking groove of the inner sleeve. When the locking block is inserted into the locking groove and limited by the limiting block, rotating the inner rod can drive the inner sleeve to rotate through the locking block, thereby driving the valve stem to rotate. The arc-shaped design of the limiting block on one side can guide the locking block to enter smoothly when it is inserted into the locking groove, while not affecting the disengagement of the locking block, ensuring the convenience and continuity of operation.

[0020] The beneficial effects of this utility model are as follows: 1. This utility model uses a spring that is always in a compressed state and pushes the limiting blocks to contact each other. In the non-sampling state, it can restrict the locking block of the force application component to be outside the locking groove, so as to prevent the valve stem from accidentally rotating due to personnel touching or colliding with the handwheel. This prevents safety hazards such as medium leakage and accidental sampling from the source, and ensures the stability of the production process and the personal safety of the operators.

[0021] 2. The locking assembly of this utility model is stably locked in the receiving port by the driving locking bar of the second spring, realizing the circumferential locking of the inner sleeve and the valve stem, effectively preventing the two from disengaging from the threads during the rotation of the valve stem, and improving the reliability of the transmission structure; at the same time, the outer limiting assembly and the valve stem are connected by threads, and with the detachable design of the locking assembly, the locking can be released and the inner sleeve can be separated by simply pulling the lifting block, which is convenient for the maintenance and repair of the equipment.

[0022] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the right cross-sectional structure of an embodiment of the present invention; Figure 3 This is a schematic diagram of the positioning component and the external limiting component according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the limiting block structure according to an embodiment of the present utility model; Reference numerals: 100, valve body; 200, side pipe; 300, flange; 400, sampling bottle; 500, valve stem sleeve; 600, valve stem; 701, inner rod; 702, handwheel; 703, locking block; 801, inner sleeve; 802, locking groove; 803, sliding groove; 804, limiting block; 805, spring one; 901, receiving port one; 902, receiving port two; 903, locking rod; 904, lifting block; 905, locking strip; 906, spring two; 1000, plug. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0027] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0028] Reference Figures 1-4 This utility model embodiment proposes a sampling valve to prevent misoperation, including a valve body 100. Both ends of the valve body 100 are fixedly connected to one end of a side tube 200, and the other ends of both side tubes 200 are fitted with flanges 300. A sampling bottle 400 is threadedly connected to the lower part of the valve body 100. A valve stem sleeve 500 is installed on the top of the valve body 100, and a valve stem 600 is threadedly connected to the valve stem sleeve 500. A plug core 1000 is fixedly installed at the bottom of the valve stem 600. A force-applying component is installed on the top of the valve stem 600, and an external limiting component is installed outside the force-applying component. A clip is connected to the external limiting component. The valve body 100 is fixedly connected to the external pipeline via the side pipe 200 and flange 300. The sampling bottle 400 is used to receive the sampling medium. The valve stem sleeve 500 provides support and guidance for the valve stem 600. The valve stem 600 drives the plug core 1000 to move up and down through threaded transmission, realizing the opening and closing of sampling by the valve body 100. The force application component provides the operating carrier for the rotation of the valve stem 600. The external limiting component and the locking component work together to form an anti-misoperation mechanism. Only after correct unlocking can the force application component drive the valve stem 600 to move, avoiding media leakage or sampling abnormalities caused by accidental contact.

[0029] The valve stem 600 has a threaded groove at its top, and the external limiting component is located in the threaded groove. The threaded groove at the top of the valve stem 600 provides a mounting base for the external limiting component. The external limiting component and the valve stem 600 are detachably fixed through threaded connection, while ensuring that the external limiting component and the valve stem 600 maintain a stable relative position during operation.

[0030] The outer limiting component includes an inner sleeve 801, the outer side of which is threadedly connected to a threaded groove. The bottom of the inner sleeve 801 has two slots 802 on each side. Each side wall of the slot 802 has a sliding groove 803. One end of a spring 805 is connected to the cavity wall of each of the two opposing sliding grooves 803 that are furthest from each other. The other end of the spring 805 is connected to a limit block 804. The inner sleeve 801 is fixed to the threaded groove of the valve stem 600 by threads. The slots 802 are used to cooperate with the locking block 703 of the force application component to achieve power transmission. Thus, when the handwheel 702 pulls the locking block 703 to rotate, it drives the valve stem 600 to rotate. The spring 805 is always in a compressed state, allowing the two limiting blocks to rotate. The position blocks 804 abut against each other, and the limit block 804 can slide in the slide groove 803. When the locking block 703 of the force application component slides into the slot 802, it can squeeze the limit block 804 into the slide groove 803 and pass over the limit block 804. In this way, during the twisting 702, the force can be transmitted to the valve stem 600 through the locking block 703 and the inner sleeve 801, so that the valve stem 600 can rotate. Under the action of the spring force, the locking block 703 is laterally limited to prevent the locking block 703 from accidentally dislodging from the slot 802. When not in use, the locking block 703 is also restricted to be outside the slot 802. In this way, when sampling is not required, the handwheel 702 will not drive the rotation of the valve stem 600, so that sampling will not be accidentally performed due to misoperation.

[0031] A protruding retaining ring is provided at the bottom of the threaded groove. The protruding retaining ring contacts the bottom wall of the inner sleeve 801. The limiting block 804 matches the slide groove 803. The protruding retaining ring at the bottom of the threaded groove plays an axial limiting role for the inner sleeve 801, preventing the inner sleeve 801 from being excessively screwed into the threaded groove and affecting the locking block 703. The shape and size of the limiting block 804 match those of the slide groove 803, ensuring that the limiting block 804 slides smoothly in the slide groove 803.

[0032] The locking assembly includes a first receiving port 901 on the top of the inner sleeve 801 and a second receiving port 902 on the top of the valve stem 600. A locking strip 905 is slidably connected in the first receiving port 901. A locking rod 903 is fixedly connected to the top of the locking strip 905. A lifting block 904 is fixedly connected to the top of the locking rod 903 through the top wall of the first receiving port 901. A second spring 906 is sleeved on the outside of the locking rod 903. The first receiving port 901 provides mounting space for the locking strip 905, the locking rod 903, and the second spring 906. In the space, spring 2 906 always presses against the retaining strip 905, keeping the retaining strip 905 in the receiving port 2 902 for restriction. This ensures that when the handwheel 702 drives the valve stem 600 to rotate, the inner sleeve 801 does not disengage from the valve stem 600 thread. Pulling the lifting block 904 upwards can drive the retaining rod 903 and retaining strip 905 upwards, causing the retaining strip 905 to disengage from the receiving port 2 902, releasing the circumferential restriction between the inner sleeve 801 and the valve stem 600. This allows the inner sleeve 801 to separate from the valve stem 600.

[0033] One end of the second spring 906 is fixedly connected to the top wall of the second receiving port 902, and the other end of the second spring 906 is connected to the locking strip 905. The locking strip 905 matches the second receiving port 902. The second spring 906 ensures that the locking strip 905 is stably locked in the second receiving port 902, maintaining the circumferential locking state of the inner sleeve 801 and the valve stem 600.

[0034] The force-applying component includes an inner rod 701, which is movably inserted into an inner sleeve 801. Both sides of the bottom of the inner rod 701 are connected to locking blocks 703 via screws. A handwheel 702 is mounted on the top of the inner rod 701. The locking blocks 703 match the locking slots 802. The two opposing limiting blocks 804 have an arc-shaped contact point on their closest side. The handwheel 702 provides the operator with a rotational force-applying point; rotating the handwheel 702 drives the inner rod 701 to rotate synchronously. The bottom of the inner rod 701... The locking block 703 matches the locking groove 802 of the inner sleeve 801. When the locking block 703 is inserted into the locking groove 802 and is limited by the limiting block 804, rotating the inner rod 701 can drive the inner sleeve 801 to rotate through the locking block 703, thereby driving the valve stem 600 to rotate. The arc-shaped design of the limiting block 804 on one side can guide the locking block 703 to enter smoothly when it is inserted into the locking groove 802, while not affecting the disengagement of the locking block 703, ensuring the convenience and continuity of operation.

[0035] The specific implementation method is as follows: When in use, the handwheel 702 of the force application component drives the inner rod 701. The locking block 703 at the bottom of the inner rod 701 needs to squeeze the limiting block 804 and slide into the slide groove 803 before it can be smoothly inserted into the slot 802 and locked by the limiting block 804. At this time, rotating the handwheel 702 can drive the valve stem 600 to rotate through the locking block 703 and the inner sleeve 801. When not in use, the limiting block 804 restricts the locking block 703 to be outside the slot 802, that is, between the threaded groove and the bottom wall of the inner sleeve 801, so that no transmission is generated, avoiding accidental contact with the handwheel 702, which may cause the valve stem 600 to rotate and cause accidental sampling or media leakage. Spring 2 906 continuously presses against the retaining strip 905, so that the retaining strip 905 is stably engaged in the receiving port 2 902, realizing the circumferential locking of the inner sleeve 801 and the valve stem 600, preventing the two from disengaging from the threads when the valve stem 600 rotates. When it is necessary to disassemble the inner sleeve 801, pulling the lifting block 904 upward can drive the retaining rod 903 and the retaining strip 905 to move upward, so that the retaining strip 905 disengages from the receiving port 2 902. After the circumferential restriction is released, the inner sleeve 801 can be rotated and separated from the valve stem 600.

[0036] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A sampling valve designed to prevent misoperation, comprising a valve body (100), characterized in that, Both ends of the valve body (100) are fixedly connected to one end of the side tube (200), and the other ends of the two side tubes (200) are fitted with flanges (300). The lower part of the valve body (100) is threadedly connected to a sampling bottle (400). The top of the valve body (100) is fitted with a valve stem sleeve (500), and a valve stem (600) is threadedly connected to the valve stem sleeve (500). A plug (1000) is fixedly installed at the bottom of the valve stem (600). A force-applying component is installed at the top of the valve stem (600), and an external limiting component is installed on the outside of the force-applying component. A locking component is connected to the external limiting component.

2. The sampling valve for preventing misoperation according to claim 1, characterized in that: The valve stem (600) has a threaded groove at its top, and the external limiting component is located in the threaded groove.

3. The sampling valve for preventing misoperation according to claim 2, characterized in that: The outer limiting component includes an inner sleeve (801), the outer side of which is threadedly connected to a threaded groove. The bottom of the inner sleeve (801) has slots (802) on both sides. The two sides of the slots (802) have sliding grooves (803). One end of a spring (805) is connected to the cavity wall of the two opposite sliding grooves (803) that are far apart from each other. The other end of the spring (805) is connected to a limit block (804).

4. The sampling valve for preventing misoperation according to claim 3, characterized in that: A protruding retaining ring is provided at the bottom of the peripheral side of the threaded groove. The protruding retaining ring contacts the bottom wall of the inner sleeve (801). The limiting block (804) matches the sliding groove (803).

5. The sampling valve for preventing misoperation according to claim 4, characterized in that: The locking assembly includes a receiving port one (901) opened on the top of the inner sleeve (801) and a receiving port two (902) opened on the top of the valve stem (600). A locking strip (905) is slidably connected in the receiving port one (901). A locking rod (903) is fixedly connected to the top of the locking strip (905). A lifting block (904) is fixedly connected to the top of the locking rod (903) through the top wall of the receiving port one (901). A spring two (906) is sleeved on the outside of the locking rod (903).

6. The sampling valve for preventing misoperation according to claim 5, characterized in that: One end of the second spring (906) is fixedly connected to the top wall of the second receiving port (902), and the other end of the second spring (906) is connected to the locking strip (905), which is matched with the second receiving port (902).

7. The sampling valve for preventing misoperation according to claim 6, characterized in that: The force-applying component includes an inner rod (701), which is movably inserted into an inner sleeve (801). Both sides of the bottom of the inner rod (701) are connected to locking blocks (703) by screws. A handwheel (702) is installed on the top of the inner rod (701). The locking blocks (703) match the locking slots (802). The two opposing limiting blocks (804) are arc-shaped on the side closest to each other.

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