Multifunctional gate valve

Abstract

The utility model relates to a multifunctional gate valve, which belongs to the technical field of gate valves and comprises a valve main body, a transmission mechanism is mounted at the top of the valve main body, a valve core is inserted and slidably connected to the inner side of the valve main body, an opening and closing groove for the valve core to be inserted is formed in the inner bottom wall of the valve main body, and a rubber coating sleeve is adhered to the outer side of the valve core. The transmission mechanism drives the valve core to move up and down in the valve main body; the transmission mechanism comprises a valve cylinder fixed to the top of the main valve body, a fixed cylinder connected to the top of the valve cylinder through a flange, a valve deck connected to the top of the fixed cylinder through a flange, a power mechanism arranged on the top of the valve deck and a supporting block fixed to the inner side of the fixed cylinder. The inner threaded cylinder penetrates through and is rotationally connected to the top of the supporting block through a sealing bearing, the threaded rod is in threaded connection to the inner side of the inner threaded cylinder, and the sealing block is fixed to the inner side of the valve cylinder. The multifunctional gate valve can meet the requirement for long-time stable use.

Description

Technical Field

[0001] This application relates to the field of gate valve technology, specifically a multifunctional gate valve. Background Technology

[0002] A gate valve consists of a gate, which moves in a direction perpendicular to the direction of fluid flow. Gate valves can be divided into rising stem gate valves and non-rising stem gate valves. Non-rising stem gate valves can save some installation space and are mostly used in underground environments.

[0003] According to the gate valve disclosed in Chinese Patent Publication No. CN218063463U, this patent, through the cooperation of an indicating mechanism and a moving component, enables workers to easily judge the degree of opening and closing of the gate valve, facilitates flow regulation, and thus expands the scope of application, making it very practical.

[0004] However, this patent has certain shortcomings in actual use. To prevent a large amount of liquid from flowing into the storage chamber, the valve disc inside the gate valve and the bottom opening of the storage chamber should have good sealing performance. As the valve disc is moved, it will continuously rub against the inner wall of the storage chamber. After long-term use, the connection between the valve disc and the inner wall of the storage chamber will be worn. As a result, even when the valve disc is closed, liquid will still flow in, affecting the efficiency of liquid flow and increasing the risk of liquid leakage. In this regard, this application provides a multi-functional gate valve to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a multifunctional gate valve that has the advantages of meeting the requirements for stable use over a long period of time. It solves the problem that after prolonged use, existing gate valves are prone to leakage due to wear at the wear points, which increases the risk of leakage.

[0006] To achieve the above objectives, this application provides the following technical solution: a multifunctional gate valve, comprising a valve body, a transmission mechanism installed on the top of the valve body, a valve core inserted into and slidably connected to the inner side of the valve body, an opening and closing groove for inserting the valve core on the inner bottom wall of the valve body, a rubber sleeve bonded to the outer side of the valve core, and the transmission mechanism driving the valve core to move up and down inside the valve body;

[0007] The transmission mechanism includes a valve cylinder fixed to the top of the valve body, a fixed cylinder connected to the top of the valve cylinder via a flange, a valve cover connected to the top of the fixed cylinder via a flange, a power mechanism disposed on the top of the valve cover, a support block fixed to the inner side of the fixed cylinder, an internally threaded cylinder passing through and rotatably connected to the top of the support block via a sealed bearing, a threaded rod threaded to the inner side of the internally threaded cylinder, a sealing block fixed to the inner side of the valve cylinder, a connecting hole opened on the top of the sealing block for the valve core to move, an annular abutment block fixed to the outer side of the valve core, an annular groove opened on the top of the sealing block and communicating with the inside of the connecting hole, and a guide blocking block fixed to the inner side of the valve cylinder and penetrated by the bottom end of the valve core.

[0008] By adopting the above technical solution, the requirement for stable use over a long period of time can be met, and even if wear occurs at the connection during long-term use, it can still block the upward flow of liquid.

[0009] Furthermore, the power mechanism includes a support frame and a drive mechanism; the support frame is fixedly installed on the top of the valve cover, and the drive mechanism is fixedly installed on the top of the support frame.

[0010] By adopting the above technical solution, power output can be achieved through the drive mechanism.

[0011] Furthermore, the drive mechanism includes a reducer and a DC motor. The output shaft of the DC motor and the input shaft of the reducer are fixedly connected. The top end of the internally threaded cylinder passes through the top of the valve cover and extends to the outside. The output shaft of the reducer passes through the top of the support frame and is fixedly connected to the top end of the internally threaded cylinder.

[0012] By adopting the above technical solution, the drive mechanism can drive the internal threaded cylinder to rotate.

[0013] Furthermore, a liquid flow sensor is fixedly installed on the top of the valve body. The input end of the liquid flow sensor passes through one side of the back of the valve body and extends into its interior. The input end of the liquid flow sensor is fixedly connected to one side of the back of the valve body.

[0014] By adopting the above technical solution, the flow rate inside the valve body can be monitored.

[0015] Furthermore, the valve core is trapezoidal, and the length of the bottom of the valve core is less than the length of the top. The rubber sleeve covers the portion of the valve core located below the annular abutment block on the outside.

[0016] By adopting the above technical solution, the rubber sleeve can increase the tightness of the connection between the valve core and the opening / closing groove.

[0017] Furthermore, the bottom of the internally threaded cylinder is open, the bottom end of the threaded rod extends to the top of the valve core and is fixedly connected thereto, and the connection hole allows the rubber sleeve to move.

[0018] By adopting the above technical solution, the threaded rod can drive the valve core to move, and the rubber sleeve can move normally.

[0019] Furthermore, the bottom of the annular abutment block is inclined, the cross-section of the annular abutment block is trapezoidal, and the annular abutment block can be inserted into the inner side of the annular groove.

[0020] By adopting the above technical solution, the bottom inclined surface of the annular abutment block can be directly separated from the bottom of the annular groove when it moves upward.

[0021] Furthermore, the top of the guide block has a through hole that matches the outer side of the rubber sleeve.

[0022] By adopting the above technical solution, the guide block can allow the valve core and the rubber sleeve to move.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] This multi-functional gate valve, through the coordinated use of the transmission mechanism, valve core, opening and closing groove, and liquid flow sensor inside the valve body, can meet the requirements of long-term stable use. Even after wear occurs at the connection during long-term use, it can still block the upward flow of liquid, preventing liquid from flowing into the upper space and increasing the risk of leakage. It also allows for more convenient and intuitive monitoring of the internal liquid flow, thus achieving the effect of remote monitoring. Furthermore, it can adjust the opening and closing degree of the gate valve according to the actual flow conditions to improve the overall reliability and applicability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this application;

[0026] Figure 2 For the structure of this application Figure 1 Enlarged view of part A in the middle;

[0027] Figure 3 For the structure of this application Figure 1 A three-dimensional schematic diagram of the valve core connection structure.

[0028] In the diagram: 1. Valve body; 200. Transmission mechanism; 201. Valve cylinder; 202. Fixed cylinder; 203. Valve cover; 204. Power mechanism; 2041. Support frame; 2042. Drive mechanism; 205. Support block; 206. Internal threaded cylinder; 207. Threaded rod; 208. Sealing block; 209. Connecting hole; 210. Annular abutment block; 211. Annular groove; 212. Guide blocking block; 301. Valve core; 302. Opening and closing groove; 303. Rubber sleeve; 4. Liquid flow sensor. Detailed Implementation

[0029] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] Please see Figures 1 to 3 This application provides a technical solution: a multifunctional gate valve, including a valve body 1, a transmission mechanism 200 installed on the top of the valve body 1, a valve core 301 inserted and slidably connected to the inner side of the valve body 1, an opening and closing groove 302 for the valve core 301 to be inserted into the inner bottom wall of the valve body 1, and a rubber sleeve 303 bonded to the outer side of the valve core 301. The transmission mechanism 200 drives the valve core 301 to move up and down inside the valve body 1. Through the cooperation between the transmission mechanism 200, the valve core 301, the opening and closing groove 302 and the liquid flow sensor 4 inside the valve body 1, the requirements for long-term stable use can be met. Even if wear occurs at the connection during long-term use, it can still block the upward flowing liquid, preventing the liquid from flowing into the upper space and increasing the risk of leakage. It can also more conveniently and intuitively monitor the flow rate of the internal liquid, thereby achieving the effect of remote monitoring, and can adjust the opening and closing degree of the gate valve according to the actual flow situation to improve the overall reliability and applicability.

[0031] In this embodiment, the transmission mechanism 200 is a structure used to drive the valve core 301 to open and close the interior of the valve body 1.

[0032] like Figure 1 , Figure 2 and Figure 3As shown, the transmission mechanism 200 includes a valve cylinder 201 fixed to the top of the valve body 1, a fixed cylinder 202 connected to the top of the valve cylinder 201 via a flange, a valve cover 203 connected to the top of the fixed cylinder 202 via a flange, a power mechanism 204 disposed on the top of the valve cover 203, a support block 205 fixed to the inner side of the fixed cylinder 202, an internal threaded cylinder 206 passing through and rotatably connected to the top of the support block 205 via a sealed bearing, a threaded rod 207 threaded to the inner side of the internal threaded cylinder 206, a sealing block 208 fixed to the inner side of the valve cylinder 201, a connecting hole 209 opened on the top of the sealing block 208 for the valve core 301 to move, an annular abutment block 210 fixed to the outer side of the valve core 301, an annular groove 211 opened on the top of the sealing block 208 and communicating with the inside of the connecting hole 209, and a guide blocking block 212 fixed to the inner side of the valve cylinder 201 and penetrated by the bottom end of the valve core 301.

[0033] The power mechanism 204 includes a support frame 2041 and a drive mechanism 2042; the support frame 2041 is fixedly installed on the top of the valve cover 203, and the drive mechanism 2042 is fixedly installed on the top of the support frame 2041.

[0034] It should be noted that the drive mechanism 2042 includes a reducer and a DC motor. The output shaft of the DC motor and the input shaft of the reducer are fixedly connected. The top end of the internal threaded cylinder 206 passes through the top of the valve cover 203 and extends to the outside. The output shaft of the reducer passes through the top of the support frame 2041 and is fixedly connected to the top end of the internal threaded cylinder 206, so that the reducer can be powered by the DC motor and drive the internal threaded cylinder 206 to rotate.

[0035] In addition, a liquid flow sensor 4 is fixedly installed on the top of the valve body 1. The input end of the liquid flow sensor 4 passes through one side of the back of the valve body 1 and extends into its interior. The input end of the liquid flow sensor 4 is fixedly connected to one side of the back of the valve body 1, so that the liquid flow sensor 4 can monitor the flow rate of the liquid flowing inside the valve body 1 and then send a signal to the control equipment of the relevant operators. The control equipment can be a PLC controller or a small computer, etc., for remote control and monitoring.

[0036] Meanwhile, the valve core 301 is trapezoidal, and the length of the bottom of the valve core 301 is less than the length of the top. The rubber sleeve 303 covers the part of the valve core 301 located below the annular abutment block 210, so that the rubber sleeve 303 can increase the tightness of the connection between the valve core 301 and the opening and closing groove 302. The rubber sleeve 303 also has a certain corrosion resistance, so that it can be used stably for a long time. The bottom of the internal threaded cylinder 206 is open. The bottom end of the threaded rod 207 extends to the top of the valve core 301 and is fixedly connected to it, so that the threaded rod 207 can drive the valve core 301 to move.

[0037] In addition, the connecting hole 209 allows the rubber sleeve 303 to move, enabling the rubber sleeve 303 to move normally. The bottom of the annular abutment block 210 is inclined, and the cross-section of the annular abutment block 210 is trapezoidal. The annular abutment block 210 can be inserted into the inner side of the annular groove 211, so that when the annular abutment block 210 moves upward, the inclined surface at the bottom can be directly disengaged from the bottom of the annular groove 211. Moreover, the inclined surface increases the contact area after abutment, thereby improving the sealing performance and making it less prone to damage due to friction.

[0038] It should also be noted that the top of the guide block 212 has a through hole that matches the outer side of the rubber sleeve 303, so that the guide block 212 can allow the valve core 301 and the rubber sleeve 303 to move, and can guide and limit the valve core 301, so that the valve core 301 can be pulled by the threaded rod 207 to move.

[0039] The working principle of the above embodiments is as follows:

[0040] In use, liquid enters through the left end of the valve body 1 and exits through the right end. The flow inside the valve body 1 is cut off by the cooperation between the valve core 301 and the opening / closing groove 302, thus achieving a blocking effect. When opening is required, the drive mechanism 2042 is activated, driving the internal threaded cylinder 206 to rotate. Under the cooperation between the guide block 212 and the valve core 301, the valve core 301 is limited. This allows the threaded rod 207 to move vertically up and down under the rotation of the internal threaded cylinder 206, causing the valve core 301 to move upward and opening the internal channel of the valve body 1, allowing the liquid to flow normally. The liquid flow sensor 4 monitors the flowing liquid in real time and transmits the signal, facilitating related work. Personnel can remotely control the valve. When it needs to be shut down, the drive mechanism 2042 is activated and rotated in the reverse direction, causing the internal threaded cylinder 206 to drive the threaded rod 207 downward. This allows the valve core 301 to re-insert into the inner side of the opening and closing groove 302, completing the flow blocking function. At the same time, the annular abutment block 210 is inserted into the inside of the annular groove 211, allowing the sealing block 208 to cooperate with the annular abutment block 210 to separate the space above and below the sealing block 208. Even if the connection between the guide block 212 and the valve core 301 is damaged due to friction, the bottom of the annular abutment block 210 is inclined, so it will not have a large contact area with the inner side of the annular groove 211 during the up and down movement. This reduces the friction surface and makes it less susceptible to damage due to friction, thus meeting the long-term stable sealing and flow blocking requirements.

[0041] Compared with existing technologies, this multi-functional gate valve, through the coordinated use of the transmission mechanism 200, valve core 301, opening and closing groove 302, and liquid flow sensor 4 inside the valve body 1, can meet the requirements of long-term stable use. Even after wear occurs at the connection points during long-term use, it can still block the upward flowing liquid, preventing liquid from flowing into the upper space and increasing the risk of leakage. It can also more conveniently and intuitively monitor the flow rate of the internal liquid, thereby achieving the effect of remote monitoring. The opening and closing degree of the gate valve can be adjusted according to the actual flow conditions to improve the overall reliability and applicability. It solves the problem that existing gate valves are prone to liquid entry after long-term use due to wear at the connection points, which increases the risk of leakage.

[0042] All electrical components mentioned in this article are electrically connected to the main controller and power supply. The provision of power supply is common knowledge in the field. The main controller can be a conventional known device such as a PLC controller, which can be implemented by a person skilled in the art through simple programming. All of these are existing publicly available power connection technologies, which will not be elaborated in this article.

Claims

1. A multi-functional gate valve comprising a valve body (1), characterized in that: The top of the valve body (1) is provided with a transmission mechanism (200), the inner side of the valve body (1) is connected with a valve core (301) in a plug-in and sliding mode, the inner bottom wall of the valve body (1) is provided with an opening and closing groove (302) for plugging the valve core (301), the outer side of the valve core (301) is attached with a rubber sleeve (303), and the transmission mechanism (200) drives the valve core (301) to move up and down in the valve body (1). The transmission mechanism (200) comprises a valve cylinder (201) fixed to the top of the valve body (1), a fixed cylinder (202) connected to the top of the valve cylinder (201) through a flange, a valve cover (203) connected to the top of the fixed cylinder (202) through a flange, a power mechanism (204) arranged on the top of the valve cover (203), a support block (205) fixed to the inner side of the fixed cylinder (202), an inner threaded cylinder (206) rotatably connected to the top of the support block (205) through a sealing bearing, a threaded rod (207) threadedly connected to the inner side of the inner threaded cylinder (206), a sealing block (208) fixed to the inner side of the valve cylinder (201), a connecting hole (209) provided on the top of the sealing block (208) and allowing the valve core (301) to move, an annular abutting block (210) fixed to the outer side of the valve core (301), an annular groove (211) provided on the top of the sealing block (208) and communicating with the inside of the connecting hole (209), and a guide blocking block (212) fixed to the inner side of the valve cylinder (201) and penetrated by the bottom end of the valve core (301).

2. A multi-functional gate valve according to claim 1, characterized in that: The power mechanism (204) comprises a support frame (2041) and a driving mechanism (2042), wherein the support frame (2041) is fixedly installed on the top of the valve cover (203), and the driving mechanism (2042) is fixedly installed on the top of the support frame (2041).

3. A multi-functional gate valve according to claim 2, characterized in that: The driving mechanism (2042) comprises a speed reducer and a DC motor, the output shaft of the DC motor is fixedly connected with the input shaft of the speed reducer, the top end of the inner threaded cylinder (206) penetrates the top of the valve cover (203) and extends to the outside, and the output shaft of the speed reducer penetrates the top of the support frame (2041) and is fixedly connected with the top end of the inner threaded cylinder (206).

4. The multi-functional gate valve according to claim 1, wherein: The top of the valve body (1) is fixedly provided with a liquid flow sensor (4), the input end of the liquid flow sensor (4) penetrates the back side of the valve body (1) and extends to the inside thereof, and the input end of the liquid flow sensor (4) is fixedly connected with the back side of the valve body (1).

5. The multi-functional gate valve according to claim 1, wherein: The valve core (301) is trapezoidal, the length of the bottom of the valve core (301) is smaller than that of the top, and the rubber sleeve (303) covers the part below the annular abutting block (210) on the outer side of the valve core (301).

6. The multi-functional gate valve according to claim 1, wherein: The bottom of the inner threaded cylinder (206) is provided in an open mode, the bottom end of the threaded rod (207) extends to the top of the valve core (301) and is fixedly connected therewith, and the connecting hole (209) allows the rubber sleeve (303) to move.

7. The multi-functional gate valve according to claim 1, wherein: The bottom of the annular abutting block (210) is beveled, the cross section of the annular abutting block (210) is trapezoidal, and the annular abutting block (210) can be inserted into the inner side of the annular groove (211).

8. The multi-functional gate valve according to claim 1, wherein: A through hole matched with the outer side of the rubber coating sleeve (303) is formed in the top of the guide blocking block (212).

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