Gate valve with flow monitoring function for petrochemical industry

Abstract

The invention belongs to the technical field of gate valves, and particularly relates to a petrochemical gate valve with a flow monitoring function. The top end of the valve body is connected with a top cover through a bolt; the inner wall of the top cover is in threaded connection with a first threaded rod; the ultrasonic flowmeter is installed on the valve body for flow monitoring, the bottom box is clamped to the bottom of the valve body to collect dirt and is located below the first gate plate, the clamping mode of the bottom box replaces installation of a pipe plug, and when dirt is accumulated at the first gate plate in the valve body, the pipe plug can be conveniently installed. The bottom box is detached in time and is comprehensively cleaned through the square groove, the area, where impurities are prone to being attached, in the valve body is exposed, cleaning pieces of more types are suitable for cleaning the first gate plate and the narrow bent area in the valve body, and the sealing performance and the overall function of the gate valve are guaranteed; the second flashboard slides upwards reversely to block a channel of the valve body, and the function of blocking the valve body in emergency is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of gate valves, and specifically relates to a gate valve for petrochemical industry with a flow monitoring function. Background Art

[0002] A gate valve is a kind of cut-off valve, mainly used to fully open or fully close the fluid in the pipeline, and is not suitable for regulating the flow. Its core features are small flow resistance and good sealing performance, and it is applicable to high-pressure and large-diameter pipeline systems in industries such as petroleum, chemical industry, electric power, and water treatment.

[0003] A Chinese patent with the publication number CN210088012U discloses a gate valve with a flow monitoring function, including a first cylinder body, a pipe plug, a leak-proof ring, a rubber gasket, a partition plate, an opening, a flange, a first rubber sealing gasket, a second cylinder body, an internally threaded pipe, a threaded rod, a turning handle, a cylinder, a second rubber sealing gasket, a box body, a bracket, a rotating shaft, an impeller, a first bevel gear, a second bevel gear, a transmission rod, a sealed bearing, a turntable, a round hole, a box body, an LCD display screen, a photoelectric switch, and a single-chip microcomputer. This application can clean the dirt inside the gate valve by removing the pipe plug without disassembling the valve.

[0004] In the process of petrochemical sewage treatment, gate valves are often used to control the flow of liquids. For the convenience of maintenance and cleaning, the above-mentioned gate valve with a flow monitoring function is designed with a detachable pipe plug, which can clean the dirt inside the gate valve by removing the pipe plug. However, although such a design can facilitate the internal cleaning of the gate valve, the conventional pipe plug is circular, making it difficult to insert the usually non-circular cleaning parts for cleaning, and it is difficult to reach the narrow and curved areas inside the gate valve, which makes it difficult to completely remove the dirt in these areas, thus easily affecting the sealing performance and overall function of the gate valve.

[0005] Therefore, the present invention provides a gate valve for petrochemical industry with a flow monitoring function. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A gate valve for petrochemical industry with a flow monitoring function according to the present invention includes a valve body; the top end of the valve body is connected to a top cover by bolts; the inner wall of the top cover is threadedly connected to a first threaded rod; the bottom end of the first threaded rod is rotatably connected to a first gate plate, and the first gate plate is slidably connected to the inner wall of the valve body; the bottom end of the valve body is provided with a bottom box; both sides of the bottom box are fixedly connected with side plates; an ultrasonic flowmeter is fixedly connected to the valve body; a clamping component is arranged on the outer wall of the valve body, and the clamping component is used for clamping and fixing the bottom box.

[0008] Preferably, a clamping groove is provided on the inner wall of the side plate; the clamping component includes a fixing plate, a rotating rod and a square plate; the two fixing plates are respectively fixed on both sides of the valve body, and the fixing plate is located above the side plate; the rotating rod is rotatably connected to the fixing plate; the square plate is fixed at the bottom end of the rotating rod.

[0009] Preferably, a second threaded rod is threadedly connected to the inner wall of the bottom box; a first hand wheel is fixed at the bottom end of the second threaded rod; the top end of the second threaded rod is rotatably connected to a second gate plate, and the second gate plate is slidably connected to the inner wall of the bottom box.

[0010] Preferably, a pressing block is fixed on the outer wall of the first gate plate; a diversion block is slidably connected to the inner wall of the valve body through a first elastic member, and the diversion block is located at the bottom of the pressing block, and one side of the bottom end of the diversion block is provided with a slope.

[0011] Preferably, a plurality of through holes are formed on the slope surface of the diversion block.

[0012] Preferably, a scraping blade is fixed at the bottom end of the first gate plate; the scraping blade is attached to the inner wall of the valve body.

[0013] Preferably, a sliding plate is slidably connected to the inner wall of the valve body through a second elastic member, and there are two sliding plates, which are respectively located on both sides of the first threaded rod; a sealing plate is fixed at the bottom end of the sliding plate.

[0014] Preferably, a second hand wheel is fixed at the top end of the first threaded rod; gripping rods are relatively fixed on the outer wall of the second hand wheel.

[0015] Preferably, the bottom ends of the two gripping rods are rotatably connected to a rotating plate; the rotating plate is located above the sliding plate.

[0016] Preferably, a matching plate is fixed at the top end of the sliding plate; a limiting groove is formed at the top end of the matching plate, and the limiting groove corresponds to the rotating plate.

[0017] The beneficial effects of the present invention are as follows: 1. For the gate valve with a flow monitoring function for petrochemical industry of the present invention, the ultrasonic flowmeter is installed on the valve body for flow monitoring, and the bottom box is clamped at the bottom of the valve body to collect dirt and is located below the first gate plate. The installation of the bottom box by clamping replaces the installation of the pipe plug. When dirt accumulates at the first gate plate inside the valve body, the bottom box can be removed in time and cleaned comprehensively through the square groove, exposing the area inside the valve body where impurities are likely to adhere, and adapting to more types of cleaning parts to clean the first gate plate and the narrow and curved areas inside the valve body, ensuring the sealing performance and overall function of the gate valve. When the first gate plate is difficult to normally block the valve body channel, the second gate plate relies on upward sliding to block the valve body channel, playing an emergency role in blocking the valve body.

[0018] 2. The gate valve with flow monitoring function for petrochemical industry according to the present invention can reduce the impact of fluid on the first gate plate by setting the diversion block to slide down with the first gate plate. Cooperating with the slope and multiple through holes of the diversion block, the resistance in the fluid flowing down the diversion block is reduced. Using two blocking plates to block the channel of the valve body can comprehensively clean a larger range inside the valve body and ensure the sealing performance of the block inside the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a perspective view of the connection between the gate valve of the present invention and the pipeline; Figure 2 is a perspective view of the gate valve of the present invention; Figure 3 is a partial structural cross-sectional view of the valve body in the present invention; Figure 4 is a schematic structural view of the rotating plate in the present invention; Figure 5 is a schematic structural view of the second gate plate in the present invention; Figure 6 is a schematic structural view of the square plate in the present invention.

[0021] In the figure: 1, valve body; 11, top cover; 12, first threaded rod; 13, first gate plate; 14, bottom box; 15, side plate; 16, ultrasonic flowmeter; 2, fixing plate; 21, rotating rod; 22, square plate; 3, second threaded rod; 31, first handwheel; 32, second gate plate; 4, pressing block; 41, diversion block; 5, scraping knife; 6, sliding plate; 61, blocking plate; 7, second handwheel; 71, holding rod; 8, rotating plate; 9, fitting plate; 91, limiting groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0023] Such as Figures 1 to 6As shown in the figure, a gate valve with a flow monitoring function for petrochemical use according to an embodiment of the present invention includes a valve body 1; the top end of the valve body 1 is bolted to a top cover 11; the inner wall of the top cover 11 is threadedly connected to a first threaded rod 12; the bottom end of the first threaded rod 12 is rotatably connected to a first gate plate 13, and the first gate plate 13 is slidably connected to the inner wall of the valve body 1; a bottom box 14 is provided at the bottom end of the valve body 1; side plates 15 are fixedly connected to both sides of the bottom box 14; an ultrasonic flowmeter 16 is fixedly connected to the valve body 1; a clamping assembly is provided on the outer wall of the valve body 1, and the clamping assembly is used for clamping and fixing the bottom box 14; when the gate valve is used to control the liquid flow during petrochemical sewage treatment, both ends of the valve body 1 are respectively connected to the pipeline by bolts. When it is necessary to close the valve body 1, the first threaded rod 12 is rotated clockwise, and the threaded cooperation between the first threaded rod 12 and the top cover 11 drives the first gate plate 13 to slide down until the first gate plate 13 blocks the passage of the valve body 1. When it is necessary to open the valve body 1, the first threaded rod 12 is rotated counterclockwise to drive the first gate plate 13 to slide up, and the liquid can flow through the inside of the valve body 1. The ultrasonic flowmeter 16 is fixed on one side of the valve body 1 to monitor the flow rate of the liquid flowing through the valve body 1. The ultrasonic flowmeter 16 is a non-contact flow measurement instrument that uses the propagation characteristics of ultrasonic waves in the fluid to measure the flow velocity and flow rate. When dirt adheres to the first gate plate 13 after the valve body 1 has been used for a long time and affects the closing of the valve body 1, the sewage is first intercepted or the first gate plate 13 slides down to close the flow of the valve body 1. The fixing of the two side plates 15 on the bottom box 14 by the clamping assembly is released, and the bottom box 14 is removed from the valve body 1. At this time, a square groove corresponding to the first gate plate 13 appears at the bottom of the valve body 1. The dirt that affects the first gate plate 13 from blocking the inside of the valve body 1 accumulates on the bottom box 14 and the sliding part of the first gate plate 13. By cleaning the dirt at the square groove and on the bottom box 14, the sealing performance of the gate valve can be ensured. Then, the bottom box 14 is fixed at the square groove of the valve body 1 by the clamping assembly to continue collecting dirt. A sealing gasket is installed on the bottom box 14, and the clamping of the bottom box 14 can ensure the overall sealing performance of the gate valve. The installation of a pipe plug is replaced by the clamping method of the bottom box 14, so that the area where dirt usually accumulates in the gate valve can be comprehensively cleaned by opening the square groove, and the area where impurities are likely to adhere inside the valve body 1 is exposed, adapting to more types of cleaning parts to clean the first gate plate 13 and the narrow and curved area inside the valve body 1, ensuring the sealing performance and overall function of the gate valve.

[0024] A clamping groove is provided on the inner wall of the side plate 15; the clamping component includes a fixing plate 2, a rotating rod 21 and a square plate 22; the two fixing plates 2 are respectively fixed on both sides of the valve body 1, and the fixing plate 2 is located above the side plate 15; the rotating rod 21 is rotatably connected to the fixing plate 2; the square plate 22 is fixed at the bottom end of the rotating rod 21; when the bottom box 14 is fixed on the valve body 1, the bottom box 14 is aligned with and attached to the square groove at the bottom of the valve body 1. At this time, the two groups of rotating rods 21 cooperate with the square plates 22 to be respectively inserted into the clamping grooves of the two side plates 15. Rotate the rotating rod 21 to make the square plate 22 and the clamping groove be misaligned and clamped, so as to realize the installation of the bottom box 14. When disassembling the bottom box 14, rotate the rotating rod 21 to make the square plate 22 correspond to the clamping groove, and the bottom box 14 can be separated from the valve body 1 after the square plate 22 slides out of the clamping groove, realizing the function of disassembling the bottom box 14.

[0025] As Figures 1 to 3 , Figure 5 shown, a second threaded rod 3 is threadedly connected to the inner wall of the bottom box 14; a first handwheel 31 is fixed at the bottom end of the second threaded rod 3; the top end of the second threaded rod 3 is rotatably connected to a second sluice gate 32, and the second sluice gate 32 is slidably connected to the inner wall of the bottom box 14; when the first threaded rod 12 and the first sluice gate 13 are stuck and difficult to rotate after being parked for a long time, since the first sluice gate 13 cannot normally block the inside of the valve body 1, use the first handwheel 31 to drive the second threaded rod 3 to rotate clockwise, and the second threaded rod 3 synchronously drives the second sluice gate 32 to slide up on the inner wall of the bottom box 14 until the second sluice gate 32 slides into the inner wall of the valve body 1 to block the channel of the valve body 1, so as to realize the function of urgently blocking the valve body 1 when the first sluice gate 13 cannot be used normally.

[0026] As Figures 1 to 4 shown, a pressing block 4 is fixed on the outer wall of the first sluice gate 13; a flow guiding block 41 is slidably connected to the inner wall of the valve body 1 through a first elastic member, and the flow guiding block 41 is located at the bottom end of the pressing block 4, and one side of the bottom end of the flow guiding block 41 is provided with a slope; when using the first sluice gate 13 to block the channel of the valve body 1, since the fluid flow rate in the valve body 1 is relatively large, the fluid will impact the first sluice gate 13. If the instantaneous impact force is too large, it will directly cause damage to the sluice gate. Use the first sluice gate 13 to synchronously drive the pressing block 4 to slide down, the pressing block 4 presses down the flow guiding block 41, and the first elastic member contracts and is stressed. The flow guiding block 41 is located in front of the first sluice gate 13 to block part of the fluid, reducing the direct impact of the fluid on the first sluice gate 13, playing a role in protecting the first sluice gate 13. At the same time, one side of the bottom end of the flow guiding block 41 is provided with a slope, and the slope can reduce the resistance in the fluid when the flow guiding block 41 slides down.

[0027] A plurality of through holes are formed in the inclined surface of the diversion block 41; when the diversion block 41 is used to reduce the impact of the fluid on the first gate plate 13, the plurality of through holes formed in the slope of the diversion block 41 are used to divert the fluid, reducing the resistance generated before the fluid is not completely blocked when the diversion block 41 slides down, and ensuring the sliding effect of the diversion block 41.

[0028] A scraping knife 5 is fixedly connected to the bottom end of the first gate plate 13; the scraping knife 5 is attached to the inner wall of the valve body 1; when the gate valve is used for a long time and the first gate plate 13 is not closed for a long time, a large amount of dirt is likely to adhere to the sliding part. The first threaded rod 12 is used to drive the first gate plate 13 to slide down, and the first gate plate 13 synchronously drives the scraping knife 5 at the bottom end to slide down. The scraping knife 5 is attached to the inner wall of the valve body 1 to scrape the sliding part of the first gate plate 13, reducing the adhesion of impurities on the inner wall of the valve body 1 and ensuring the sealing performance of the first gate plate 13 for blocking.

[0029] As Figures 1 to 3 As shown in the figure, a sliding plate 6 is slidably connected to the inner wall of the valve body 1 through a second elastic member, and there are two sliding plates 6, which are respectively located on both sides of the first threaded rod 12; a sealing plate 61 is fixedly connected to the bottom end of the sliding plate 6; when a large amount of dirt accumulates seriously at the blocking part of the first gate plate 13, the two sliding plates 6 are pressed and slid down, synchronously driving the two sealing plates 61 to slide down to block both sides inside the valve body 1, closing the pipelines at both ends of the valve body 1, so that the blocking part of the first gate plate 13 for the valve body 1 is completely exposed. At this time, the inside of the valve body 1 is cleaned from the square groove at the bottom of the valve body 1, and the dirt can be cleaned in a larger range.

[0030] As Figures 1 to 4 As shown in the figure, a second handwheel 7 is fixedly connected to the top end of the first threaded rod 12; a grip rod 71 is fixedly connected to the outer wall of the second handwheel 7 relatively; when controlling the first gate plate 13 to block the channel of the valve body 1, the second handwheel 7 is fixed on the first threaded rod 12, and in cooperation with the two grip rods 71 respectively fixed on both sides of the second handwheel 7, the second handwheel 7 and the two grip rods 71 form a handle that is more convenient for the first threaded rod 12 to rotate, improving the rotation effect of the first threaded rod 12 when controlling the blocking of the channel of the valve body 1.

[0031] The bottom ends of the two grip rods 71 are rotatably connected to a rotating plate 8; the rotating plate 8 is located above the sliding plate 6; when pressing and cleaning the square groove position at the two sliding plates 6, after the two sliding plates 6 are pressed and slid down, the rotating plate 8 is first rotated out from the bottom of the grip rod 71, and then the first threaded rod 12 is rotated, so that the two rotating plates 8 are located on the top ends of the two sliding plates 6 and press on them. The two rotating plates 8 can respectively exert stable pressure on the two sliding plates 6, so that the two sealing plates 61 can stably block the channel of the valve body 1. At this time, the square groove can be cleaned, and at the same time, depending on the extension of the rotating plate 8 to the grip rod 71, the comfort of rotating the first threaded rod 12 is improved.

[0032] A mating plate 9 is fixedly connected to the top end of the sliding plate 6; a limiting groove 91 is formed at the top end of the mating plate 9, and the limiting groove 91 corresponds to the rotating plate 8; when pressing the two plugging plates 61 against the channel of the valve body 1, the rotating plate 8 rotates and extends and then slides down as the first threaded rod 12 rotates. A part of the rotating plate 8 is pressed against the limiting groove 91 on the mating plate 9, so that the rotating plate 8 presses the plugging plate 61 at the bottom end of the mating plate 9, improving the stability of the two plugging plates 61 in plugging the channel of the valve body 1.

[0033] Working process: When using a gate valve to control the liquid flow in the petrochemical sewage treatment process, both ends of the valve body 1 are connected to the pipelines through bolts. When it is necessary to close the valve body 1, rotate the first threaded rod 12 clockwise. The first threaded rod 12 is in threaded cooperation with the top cover 11 and drives the first gate plate 13 to slide down until the first gate plate 13 plugs the channel of the valve body 1. When it is necessary to open the valve body 1, rotate the first threaded rod 12 counterclockwise to drive the first gate plate 13 to slide up, and the liquid can flow through the inside of the valve body 1. The ultrasonic flowmeter 16 is fixed on one side of the valve body 1 to monitor the flow rate of the liquid flowing through the inside of the valve body 1. The ultrasonic flowmeter 16 is a non-contact flow measurement instrument that uses the propagation characteristics of ultrasonic waves in the fluid to measure the flow velocity and flow rate. When dirt adheres to the first gate plate 13 after the valve body 1 has been used for a long time and affects the closing of the valve body 1, first stop the sewage or slide down the first gate plate 13 to close the flow of the valve body 1, release the fixation of the two side plates 15 on the bottom box 14 by the clamping component, and remove the bottom box 14 from the valve body 1. At this time, a square groove corresponding to the first gate plate 13 is presented at the bottom of the valve body 1. The dirt that affects the first gate plate 13 from plugging the inside of the valve body 1 accumulates on the bottom box 14 and the sliding area of the first gate plate 13. By cleaning the dirt at the square groove and on the bottom box 14, the sealing performance of the gate valve can be ensured. Then, fix the bottom box 14 to the square groove of the valve body 1 with the clamping component to continue collecting dirt. A sealing gasket is installed on the bottom box 14, and the clamping of the bottom box 14 can ensure the overall sealing performance of the gate valve. Using the clamping method of the bottom box 14 replaces the installation of the pipe plug, so that the area where dirt is usually easy to accumulate in the gate valve can be comprehensively cleaned through the opening of the square groove, exposing the area where impurities are easy to adhere inside the valve body 1, and adapting to more types of cleaning parts to clean the first gate plate 13 and the narrow and curved area inside the valve body 1, ensuring the sealing performance and overall function of the gate valve; when fixing the bottom box 14 on the valve body 1, the bottom box 14 is aligned with the square groove at the bottom of the valve body 1 and fitted. At this time, the two groups of rotating rods 21 and the square plate 22 respectively correspond to be inserted into the card slots of the two side plates 15, and rotate the rotating rods 21 to make the square plate 22 and the card slot dislocated and clamped, so as to realize the installation of the bottom box 14. When disassembling the bottom box 14, rotate the rotating rods 21 to make the square plate 22 correspond to the card slot, and the bottom box 14 can be separated from the valve body 1 after the square plate 22 slides out of the card slot, realizing the function of disassembling the bottom box 14. When the first threaded rod 12 and the first gate plate 13 are parked for a long time and jammed and difficult to rotate, since the first gate plate 13 cannot normally block the inside of the valve body 1, the first handwheel 31 is rotated clockwise to drive the second threaded rod 3, and the second threaded rod 3 synchronously drives the second gate plate 32 to slide upward on the inner wall of the bottom box 14 until the second gate plate 32 slides into the inner wall of the valve body 1 to block the passage of the valve body 1, so as to achieve the function of urgently blocking the valve body 1 when the first gate plate 13 cannot be used normally; When using the first gate plate 13 to block the passage of the valve body 1, due to the large fluid flow rate in the valve body 1, the fluid will impact the first gate plate 13. If the instantaneous impact force is too large, it will directly cause damage to the gate plate. The first gate plate 13 is used to synchronously drive the pressure block 4 to slide downward, and the pressure block 4 presses down the flow guide block 41, and the first elastic member contracts and is stressed. The flow guide block 41 is located at the front end of the first gate plate 13 to block part of the fluid, reducing the direct impact of the fluid on the first gate plate 13, playing a role in protecting the first gate plate 13. At the same time, one side of the bottom end of the flow guide block 41 is provided with a slope, and the slope can reduce the resistance in the fluid when the flow guide block 41 slides downward; when using the flow guide block 41 to reduce the impact of the fluid on the first gate plate 13, a plurality of through holes opened on the slope of the flow guide block 41 are used to guide the fluid, reducing the resistance generated before the fluid is completely blocked when the flow guide block 41 slides downward, and ensuring the sliding effect of the flow guide block 41; After the gate valve is used for a long time, if the first gate plate 13 is not closed for a long time, a large amount of dirt is likely to adhere to its sliding part. The first threaded rod 12 is used to drive the first gate plate 13 to slide downward, and the first gate plate 13 synchronously drives the scraping knife 5 at the bottom end to slide downward. The scraping knife 5 fits on the inner wall of the valve body 1 to scrape the sliding part of the first gate plate 13, reducing the attachment of impurities on the inner wall of the valve body 1 and ensuring the sealing performance of the first gate plate 13 for blocking; When serious dirt accumulation occurs at the sealing position of the first gate plate 13, press down on the two sliding plates 6, synchronously driving the two sealing plates 61 to slide down to seal both sides inside the valve body 1, closing the pipelines at both ends of the valve body 1, so that the sealing position of the first gate plate 13 on the valve body 1 is completely exposed. At this time, clean the inside of the valve body 1 from the square groove at the bottom of the valve body 1, which can clean dirt in a larger area; when controlling the first gate plate 13 to seal the passage of the valve body 1, use the second handwheel 7 fixed on the first threaded rod 12, and cooperate with two holding rods 71 respectively fixed on both sides of the second handwheel 7. The second handwheel 7 and the two holding rods 71 form a handle that is more convenient for the rotation of the first threaded rod 12, improving the rotation effect of the first threaded rod 12 when controlling the sealing of the passage of the valve body 1; when pressing and cleaning the square groove position at the two sliding plates 6, after pressing down the two sliding plates 6, first rotate the rotating plate 8 out from the bottom of the holding rod 71, and then rotate the first threaded rod 12, so that the two rotating plates 8 are located on the tops of the two sliding plates 6 and press on them. The two rotating plates 8 can respectively exert stable pressure on the two sliding plates 6, so that the two sealing plates 61 can stably seal the passage of the valve body 1. At this time, the square groove can be cleaned, and at the same time, relying on the extension of the rotating plate 8 to the holding rod 71, the comfort level when rotating the first threaded rod 12 is improved; when pressing the two sealing plates 61 to seal the passage of the valve body 1, the rotating plate 8 rotates and extends and then slides down with the rotation of the first threaded rod 12. Part of the position of the rotating plate 8 is then pressed on the limiting groove 91 on the mating plate 9, so that the rotating plate 8 presses on the sealing plate 61 at the bottom of the mating plate 9, improving the stability of the two sealing plates 61 sealing the passage of the valve body 1.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A gate valve with a flow monitoring function for petrochemical use, characterized in that: It includes a valve body; the top end of the valve body is connected with a top cover by bolts; the inner wall of the top cover is threadedly connected with a first threaded rod; the bottom end of the first threaded rod is rotatably connected with a first gate plate, and the first gate plate is slidably connected to the inner wall of the valve body; the bottom end of the valve body is provided with a bottom box; both sides of the bottom box are fixedly connected with side plates; an ultrasonic flowmeter is fixedly connected to the valve body; a clamping component is arranged on the outer wall of the valve body, and the clamping component is used for clamping and fixing the bottom box.

2. The gate valve with a flow monitoring function for petrochemical use according to claim 1, characterized in that: A clamping groove is arranged on the inner wall of the side plate; the clamping component includes a fixing plate, a rotating rod and a square plate; the two fixing plates are respectively fixedly connected to both sides of the valve body, and the fixing plates are located above the side plates; the rotating rod is rotatably connected to the fixing plate; the square plate is fixedly connected to the bottom end of the rotating rod.

3. The gate valve with a flow monitoring function for petrochemical industry according to claim 1, wherein: A second threaded rod is threadedly connected to the inner wall of the bottom box; a first hand wheel is fixedly connected to the bottom end of the second threaded rod; the top end of the second threaded rod is rotatably connected with a second gate plate, and the second gate plate is slidably connected to the inner wall of the bottom box.

4. The gate valve with a flow monitoring function for petrochemical use according to claim 1, characterized in that: A pressing block is fixedly connected to the outer wall of the first gate plate; a diversion block is slidably connected to the inner wall of the valve body through a first elastic member, and the diversion block is located at the bottom of the pressing block, and one side of the bottom end of the diversion block is provided with a slope.

5. The gate valve with a flow monitoring function for petrochemical use according to claim 4, characterized in that: A plurality of through holes are formed in the slope surface of the diversion block.

6. The gate valve with a flow monitoring function for petrochemical industry according to claim 1, characterized in that: A scraping knife is fixedly connected to the bottom end of the first gate plate; the scraping knife is attached to the inner wall of the valve body.

7. The gate valve with a flow monitoring function for petrochemical industry according to claim 1, characterized in that: A sliding plate is slidably connected to the inner wall of the valve body through a second elastic member, and there are two sliding plates, and the two sliding plates are respectively located on both sides of the first threaded rod; a blocking plate is fixedly connected to the bottom end of the sliding plate.

8. The gate valve with a flow monitoring function for petrochemical industry according to claim 7, characterized in that: A second hand wheel is fixedly connected to the top end of the first threaded rod; a grip rod is fixedly connected to the outer wall of the second hand wheel relatively.

9. The gate valve with a flow monitoring function for petrochemical industry according to claim 8, characterized in that: The bottom ends of the two grip rods are rotatably connected with a rotating plate; the rotating plate is located above the sliding plate.

10. A gate valve with a flow monitoring function for petrochemical use according to claim 9, characterized in that: A matching plate is fixedly connected to the top end of the sliding plate; a limiting groove is formed in the top end of the matching plate, and the limiting groove corresponds to the rotating plate.

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