Soft sealing gate valve with driving mechanism

Abstract

The invention provides a soft sealing gate valve with a driving mechanism, and belongs to the technical field of valves, the soft sealing gate valve comprises a valve body, a connecting rod, a gate plate, a lead screw, a first self-sealing assembly, a second self-sealing assembly and the driving mechanism, a valve seat is integrally arranged on the valve body, a guide groove is formed in the valve seat, and a valve cap is fixedly mounted on the valve seat through a first bolt; a first assembling groove and a second assembling groove are formed in the center of the end, away from the valve seat, of the valve bonnet. The second assembling groove is located between the first assembling groove and an inner cavity of the valve seat. According to the soft sealing gate valve with the driving mechanism, the arranged driving mechanism is mainly composed of the cylinder, the plugging bolt and the spring and used for driving the first self-sealing assembly and the second self-sealing assembly to automatically seal the second assembling groove when the lead screw and the connecting rod are detached, so that the purpose of replacing a soft sealing structure without cutting off water is achieved; the maintenance efficiency is improved, inconvenience caused by water cut-off is reduced, and the requirements of modern engineering for high efficiency, stability and easy maintenance of the valve are met.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a soft-sealed gate valve with a driving mechanism. Background Art

[0002] In the fields of water conservancy projects, water supply and drainage systems, etc., valves are key components for controlling water flow. Traditional valves have deficiencies in terms of sealing performance and ease of maintenance. For example, the sealing performance of some valves deteriorates after long-term use, resulting in water leakage, affecting the normal operation of the system; water supply often needs to be stopped when replacing sealing components, which brings many inconveniences to production and life. In particular, soft-sealed gate valves, whose sealing rings are easily worn out during frequent operations, causing water leakage due to deterioration in sealing performance, and need to be replaced frequently. For example, a Chinese patent with announcement number CN211599683U discloses an elastic sealing gate valve with fast opening and closing speed, labor-saving and better meeting the needs of automated production, including a valve body, a valve cover, a valve stem, and a gate plate. The gate plate is arranged in the valve body, and a fluid channel and a movable channel are opened in the valve body. The fluid channel is connected to the movable channel. The valve cover is arranged on the valve body, and the gate plate is arranged in the valve body. The fluid passage A valve seat is arranged in the movable channel, a valve port is arranged on the valve seat, a soft elastic sealing ring is arranged on the arc surface of the gate plate, one end of the valve stem passes through the valve cover and extends into the valve body to be connected with the gate plate and control the gate plate to open and close the fluid channel, a sealing member is arranged on the valve stem in the movable channel, the valve cover, the sealing member and the valve seat separate the movable channel into a first air chamber and a second air chamber, an air inlet and an air outlet are arranged on the valve cover, the air inlet and the air outlet are connected with the first air chamber, an air vent is arranged inwardly on the outer wall of the valve body above the gate plate, and the air vent is connected with the second air chamber.

[0003] However, the elastic sealing gate valve mentioned above needs to stop water supply before replacing the sealing ring, which brings many inconveniences to production and life.

[0004] To this end, a soft-sealed gate valve with a driving mechanism is proposed. Summary of the invention

[0005] The present invention aims to solve the problems raised in the background technology and provides a soft-sealed gate valve with a driving mechanism. Through innovative structure and sealing design, the overall performance of the valve is improved, meeting the requirements of modern engineering for high efficiency, stability and easy maintenance of valves.

[0006] The specific technical solutions are as follows: A soft-sealed gate valve with a driving mechanism, comprising: a valve body, a valve seat being integrally provided on the valve body, a guide groove being provided in the valve seat, a valve bonnet being fixedly mounted on the valve seat by means of a first bolt, a first assembly groove and a second assembly groove being centrally provided at one end of the valve bonnet away from the valve seat, the second assembly groove being located between the first assembly groove and an inner cavity of the valve seat, the second assembly groove being coaxially arranged with the second assembly groove, the inner diameter of the second assembly groove being smaller than the inner diameter of the first assembly groove, the first assembly groove being communicated with the inner cavity of the valve seat via the second assembly groove, and a gland being fixedly mounted at one end of the valve bonnet away from the valve seat by means of a second bolt; A connecting rod, wherein an annular block is fixedly sleeved on the connecting rod, the annular block is encapsulated in the first assembly groove through the gland, and the annular block can rotate in the first assembly groove, one end of the connecting rod moves through the gland and the first assembly groove in sequence and extends into the second assembly groove, the other end of the connecting rod is located outside the gland and is fixedly mounted with a handwheel by screws, and a soft sealing structure is sleeved on the connecting rod, and the soft sealing structure is used to prevent water leakage between the first assembly groove and the second assembly groove and the connecting rod; A gate plate, the gate plate is slidably mounted in the guide groove, and the gate plate can extend into the channel in the valve body along the guide groove, an avoidance through hole is provided inside the gate plate, and an annular step is provided on the inner wall of the avoidance through hole; A lead screw, wherein the lead screw is located in the space between the valve cap and the valve seat, one end of the lead screw is fixedly connected to an end of the connecting rod away from the hand wheel, and the other end of the lead screw is movably extended into the avoidance through hole, a lead screw nut is threadedly sleeved on the lead screw, and the lead screw nut is fixedly connected to the gate plate through a connecting structure, the lead screw is driven to rotate by rotating the connecting rod through the hand wheel, and the gate plate can be driven to extend into or exit the channel in the valve body along the guide groove in cooperation with the lead screw nut; A first self-sealing component, wherein the first self-sealing component is mounted on an end surface of the lead screw nut facing the gland; a second self-sealing component, the second self-sealing component being installed in the avoidance through hole, the second self-sealing component cooperating with the first self-sealing component to close the second assembly groove when the soft sealing structure needs to be replaced, so as to prevent water in the valve body from spraying out through the second assembly groove; A driving mechanism is used to drive the first self-sealing component and the second self-sealing component to automatically close the second assembly groove when the lead screw and the connecting rod are removed, so as to achieve the purpose of replacing the soft sealing structure without stopping water.

[0007] The above-mentioned soft-sealed gate valve with a driving mechanism, wherein: the first self-sealing component includes a fixing ring and an annular rubber sealing airbag, the fixing ring is clamped in an annular groove, the annular groove is opened on an end face of the screw nut facing the gland, the annular rubber sealing airbag is located on an end face of the screw nut facing the gland, and the annular rubber sealing airbag is fixedly connected to the fixing ring, and an annular plane is opened on an end face of the assembly groove 2 away from the assembly groove 1, and the annular plane is arranged in cooperation with the annular rubber sealing airbag.

[0008] The above-mentioned soft-sealed gate valve with a driving mechanism, wherein: the second self-sealing component includes a T-shaped rubber sealing plug, the T-shaped rubber sealing plug is slidably installed in the avoidance through hole, and the side wall of the T-shaped rubber sealing plug is fitted with the inner wall of the avoidance through hole, and the T-shaped rubber sealing plug can be abutted against the annular step under the action of the driving mechanism.

[0009] The above-mentioned soft-sealed gate valve with a driving mechanism, wherein: the driving mechanism includes a cylindrical body, a sealing bolt and a spring, the cylindrical body is fixedly mounted on the valve body, and the cylindrical body is arranged relative to the valve seat, the cylindrical body and the avoidance through hole are coaxially arranged, the screw thread of the sealing bolt is threadedly mounted on the end of the cylindrical body away from the valve body, one end of the spring is located inside the cylindrical body and abuts on the screw of the sealing bolt, and the other end of the spring is located inside the avoidance through hole and is clamped on the end of the T-shaped rubber sealing plug away from the annular step, the spring can drive the T-shaped rubber sealing plug to abut against the annular step to block the avoidance through hole, and at the same time the spring can drive the annular rubber sealing airbag to seal tightly on the annular plane to close the space between the lead screw nut and the annular plane.

[0010] The above-mentioned soft-sealed gate valve with a driving mechanism, wherein: a rubber ring 1 is sleeved on the blocking bolt, and the rubber ring 1 is tightly pressed between the head of the blocking bolt and the end of the cylinder away from the valve body.

[0011] The above-mentioned soft-sealed gate valve with a driving mechanism, wherein: the soft sealing structure includes an annular thrust piece 1, an annular thrust piece 2, an annular thrust sealing pad and an O-shaped rubber ring, the annular thrust piece 1, the annular thrust piece 2, the annular thrust sealing pad and the O-shaped rubber ring are all sleeved on the connecting rod, the annular thrust piece 1 abuts between the gland and the annular block, the annular thrust piece 2 abuts between the annular block and the annular thrust sealing pad, the annular thrust sealing pad abuts between the annular thrust piece 2 and an end wall of the assembly groove 1 facing away from the gland, the annular thrust piece 1, the annular thrust piece 2 and the annular thrust sealing pad are all located inside the assembly groove 1, and the outer annular walls of the annular thrust piece 1, the annular thrust piece 2 and the annular thrust sealing pad are all fitted with the inner side wall of the assembly groove 1, the O-shaped rubber ring is located inside the assembly groove 2, and the outer annular wall of the O-shaped rubber ring is fitted with the inner side wall of the assembly groove 2.

[0012] The above-mentioned soft-sealed gate valve with a driving mechanism, wherein: an annular groove is provided on the connecting rod, and the inner ring of the O-shaped rubber ring is clamped in the annular groove.

[0013] The above-mentioned soft-sealed gate valve with a driving mechanism, wherein: the connecting structure includes a clamping seat fixedly mounted on the gate plate and a fixing plate fixedly sleeved on the lead screw nut, and the fixing plate is clamped on the inner side of the clamping seat.

[0014] The above-mentioned soft-sealed gate valve with a driving mechanism, wherein: a rubber pad is installed between the valve seat and the valve bonnet, a rubber ring 2 is installed between the gland and the valve bonnet, at least three annular mounting grooves are opened on the inner ring surface of the gland, a rubber ring 3 is installed in each of the annular mounting grooves, and the inner ring surface of the rubber ring 3 is arranged to fit the side of the connecting rod.

[0015] The above-mentioned soft-sealed gate valve with a driving mechanism, wherein: the connecting rod, the lead screw, the annular step, the avoidance through hole and the assembly groove are coaxially arranged, the lead screw and the connecting rod are integrally arranged, flanges are integrally provided on both sides of the valve body, and reinforcing ribs are integrally provided between the outer side surface of the valve body and the outer side surface of the flange and the outer side surface of the valve seat, annular bosses are integrally provided on the outer side surface of the flange, a number of annular grooves are provided on the annular bosses, a limit strip is integrally provided on the inner wall of the guide groove, a limit slot is provided on the gate plate, and the limit strip slides into the limit slot.

[0016] The present invention has the following beneficial effects: The soft-sealed gate valve with a driving mechanism provided by the present invention has a driving mechanism mainly composed of a cylinder, a sealing bolt and a spring, and is used to drive the first self-sealing component and the second self-sealing component to automatically close the assembly groove two when the screw and the connecting rod are removed, so as to achieve the purpose of replacing the soft sealing structure without stopping water, improve maintenance efficiency, reduce the inconvenience caused by water outage, and meet the needs of modern engineering for efficient, stable and easy-maintenance valves. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The structure of the soft-sealed gate valve with a driving mechanism provided by the present invention is schematically shown. Figure 1 ; Figure 2 The structure of the soft-sealed gate valve with a driving mechanism provided by the present invention is schematically shown. Figure 2 ; Figure 3 The structure of the soft-sealed gate valve with a driving mechanism provided by the present invention is schematically shown. Figure 3 ; Figure 4 A schematic cross-sectional view of a soft-sealed gate valve with a driving mechanism provided by the present invention Figure 1 ; Figure 5 A schematic diagram of the local structure of a soft-sealed gate valve with a driving mechanism provided by the present invention Figure 1 ; Figure 6 A schematic diagram of the assembly cross-sectional structure of an annular rubber sealing airbag and a lead screw nut in a soft-sealed gate valve with a driving mechanism provided by the present invention; Figure 7 A schematic cross-sectional view of a soft-sealed gate valve with a driving mechanism provided by the present invention Figure 2 ; Figure 8 for Figure 7 A schematic diagram of the enlarged structure at A in the middle; Fig. 9 A schematic cross-sectional view of a soft-sealed gate valve with a driving mechanism provided by the present invention Figure 3 ; Fig.10 for Fig. 9 A schematic diagram of the enlarged structure at B in the middle; Fig.11 A schematic cross-sectional view of a soft-sealed gate valve with a driving mechanism provided by the present invention Figure 4 ; Fig.12 A schematic diagram of the local structure of a soft-sealed gate valve with a driving mechanism provided by the present invention Figure 2 ; Fig.13 A schematic diagram of the local structure of a soft-sealed gate valve with a driving mechanism provided by the present invention Figure 3 ; Fig.14 A schematic diagram of the local structure of a soft-sealed gate valve with a driving mechanism provided by the present invention Figure 4 ; Fig.15 for Fig.14 Schematic diagram of the enlarged structure at point C in the middle.

[0018] In the attached drawings: 1. valve body; 101. reinforcing rib; 2. valve seat; 201. guide groove; 202. limit strip; 3. valve cap; 301. assembly groove 1; 302. assembly groove 2; 303. annular plane; 4. connecting rod; 401. annular block; 402. annular thrust plate 1; 403. annular thrust plate 2; 404. annular thrust seal; 405. O-shaped rubber ring; 5. gland; 501. annular mounting groove; 502. rubber ring 3; 503. rubber ring 2; 6. hand wheel; 7. driving mechanism; 701, cylinder; 702, plugging bolt; 703, spring; 704, rubber ring 1; 705, T-shaped rubber sealing plug; 8, bolt 1; 9, flange; 901, annular boss; 902, annular groove; 10, lead screw; 11, rubber pad; 12, gate; 1201, seat; 1202, avoidance hole; 1203, annular step; 13, lead screw nut; 1301, annular groove; 14, fixing plate; 15, annular rubber sealing airbag; 1501, fixing ring; 16, bolt 2. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0020] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0021] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The soft-sealed gate valve with a driving mechanism provided in this embodiment is as follows: Figure 1-Figure 15 As shown, it includes a valve body 1, a connecting rod 4, a gate plate 12, a screw 10, a first self-sealing component, a second self-sealing component and a driving mechanism 7.

[0024] Among them, a valve seat 2 is integrally provided on the valve body 1, a guide groove 201 is opened in the valve seat 2, and a valve bonnet 3 is fixedly installed on the valve seat 2 by a bolt 8, and an assembly groove 1 301 and an assembly groove 2 302 are centrally opened at one end of the valve bonnet 3 away from the valve seat 2, the assembly groove 2 302 is located between the assembly groove 1 301 and the inner cavity of the valve seat 2, and the assembly groove 2 302 is coaxially arranged with the assembly groove 1 301, the inner diameter of the assembly groove 2 302 is smaller than the inner diameter of the assembly groove 1 301, the assembly groove 1 301 is communicated with the inner cavity of the valve seat 2 through the assembly groove 2 302, and a pressure cover 5 is fixedly installed at one end of the valve bonnet 3 away from the valve seat 2 by a bolt 2 16.

[0025] Among them, a ring block 401 is fixedly mounted on the connecting rod 4, and the ring block 401 is encapsulated in the assembly groove 1 301 through the pressure cover 5, and the ring block 401 can rotate in the assembly groove 1 301, and one end of the connecting rod 4 moves through the pressure cover 5 and the assembly groove 1 301 in turn to extend into the assembly groove 2 302, and the other end of the connecting rod 4 is located outside the pressure cover 5 and is fixed with a handwheel 6 by screws, and a soft sealing structure is mounted on the connecting rod 4, and the soft sealing structure is used to prevent the assembly groove 1 301 and the assembly groove 2 302 from being detached from the connecting rod 4. In order to prevent water leakage, the annular block 401 is encapsulated in the assembly groove 1 301 through the pressure cover 5 and can rotate, so as to drive the screw 10 to rotate; one end of the connecting rod 4 can move through the pressure cover 5 and the assembly groove 1 301 to extend into the assembly groove 2 302, and the other end is located outside the pressure cover 5 and is equipped with a handwheel 6, so that the operator can manually operate the handwheel 6 to control the movement of the gate 12; the soft sealing structure on the connecting rod 4 can effectively prevent water leakage between the assembly groove 1 301 and the assembly groove 2 302 and the connecting rod 4, so as to ensure the sealing of the valve.

[0026] Among them, the gate plate 12 is slidably installed in the guide groove 201, and the gate plate 12 can extend into the channel in the valve body 1 along the guide groove 201, and an avoidance through hole 1202 is opened inside the gate plate 12, and an annular step 1203 is opened on the inner wall of the avoidance through hole 1202. The set guide groove 201 is used for the sliding guide of the gate plate 12 to ensure the stable movement of the gate plate 12; the valve bonnet 3 is fixedly installed on the valve seat 2 by bolts 18, and the valve bonnet 3 is provided with an assembly groove 101 and an assembly groove 202, and the inner diameter of the assembly groove 202 is smaller than the assembly groove 101. Through this structural design, suitable space and position are provided for the installation of subsequent components; the valve bonnet 3 is fixedly installed with the pressure cover 5 at one end away from the valve seat 2 by bolts 16 to realize the encapsulation of the components in the assembly groove 101.

[0027] Among them, the screw 10 is located in the space between the valve cap 3 and the valve seat 2, one end of the screw 10 is fixedly connected to the end of the connecting rod 4 away from the handwheel 6, and the other end of the screw 10 is movably extended into the avoidance through hole 1202, and a screw nut 13 is threadedly sleeved on the screw 10, and the screw nut 13 is fixedly connected to the gate plate 12 through a connecting structure. The connecting rod 4 is rotated by the handwheel 6 to drive the screw 10 to rotate, and at the same time, the screw nut 13 can drive the gate plate 12 to extend into or exit the channel in the valve body 1 along the guide groove 201. The gate plate 12 extends into or exits the channel in the valve body 1 along the guide groove 201 to adjust the water flow through the valve body 1, thereby realizing the opening and closing control of the channel in the valve body 1. An annular step 1203 is provided on the inner wall of the avoidance through hole 1202, which provides a structural basis for the installation and operation of the second self-sealing component.

[0028] Among them, the first self-sealing component is installed on an end face of the screw nut 13 facing the pressure cover 5, and the second self-sealing component is installed in the avoidance through hole 1202. The second self-sealing component cooperates with the first self-sealing component to close the assembly groove 2 302 when the soft sealing structure needs to be replaced, so as to prevent water from the valve body 1 from spraying out through the assembly groove 2 302. The driving mechanism 7 is used to drive the first self-sealing component and the second self-sealing component to automatically close the assembly groove 2 302 when the screw 10 is removed together with the connecting rod 4, so as to achieve the purpose of replacing the soft sealing structure without stopping water.

[0029] Specifically, in this embodiment: the first self-sealing component includes a fixing ring 1501 and an annular rubber sealing airbag 15, the fixing ring 1501 is clamped in the annular groove 1301, the annular groove 1301 is provided on an end face of the screw nut 13 facing the pressure cover 5, the annular rubber sealing airbag 15 is located on an end face of the screw nut 13 facing the pressure cover 5, and the annular rubber sealing airbag 15 is fixedly connected to the fixing ring 1501, and an annular plane 303 is provided on an end face of the assembly groove 2 302 away from the assembly groove 1 301, the annular plane 303 is cooperated with the annular rubber sealing airbag 15, when the soft sealing structure needs to be replaced, the annular plane 303 and the annular rubber sealing airbag 15 can cooperate with the second self-sealing component to close the assembly groove 2 302, so as to prevent water from the valve body 1 from spraying out through the assembly groove 2 302.

[0030] Specifically, in this embodiment: the second self-sealing component includes a T-shaped rubber sealing plug 705, which is slidably installed in the avoidance hole 1202, and the side wall of the T-shaped rubber sealing plug 705 is fitted with the inner wall of the avoidance hole 1202, and the T-shaped rubber sealing plug 705 can be abutted against the annular step 1203 under the action of the driving mechanism 7. Under the action of the driving mechanism 7, the T-shaped rubber sealing plug 705 can be abutted against the annular step 1203, and cooperate with the first self-sealing component to close the assembly groove 2 302 when the soft sealing structure needs to be replaced to prevent water in the valve body 1 from spraying out.

[0031] Specifically, in this embodiment: the driving mechanism 7 includes a cylinder 701, a plugging bolt 702 and a spring 703, the cylinder 701 is fixedly mounted on the valve body 1, and the cylinder 701 is arranged relative to the valve seat 2, the cylinder 701 is coaxially arranged with the avoidance through hole 1202, the screw of the plugging bolt 702 is threadedly mounted on the end of the cylinder 701 away from the valve body 1, one end of the spring 703 is located inside the cylinder 701 and abuts on the screw of the plugging bolt 702, and the spring 703 The other end is located inside the avoidance through hole 1202 and is clamped on the end of the T-shaped rubber sealing plug 705 away from the annular step 1203. The spring 703 can drive the T-shaped rubber sealing plug 705 to resist the annular step 1203 to block the avoidance through hole 1202. At the same time, the spring 703 can drive the annular rubber sealing airbag 15 to seal tightly on the annular plane 303 to close the screw nut 13 and the annular plane 303, thereby achieving the purpose of replacing the soft sealing structure without stopping water.

[0032] Specifically, in this embodiment: in order to further enhance the sealing between the blocking bolt 702 and the cylinder 701 and prevent water leakage, a rubber ring 704 is mounted on the blocking bolt 702, and the rubber ring 704 is pressed tightly between the head of the blocking bolt 702 and the end of the cylinder 701 away from the valve body 1.

[0033] Specifically, in the present embodiment: the soft sealing structure comprises an annular thrust piece 1 402, an annular thrust piece 2 403, an annular thrust sealing pad 404 and an O-shaped rubber ring 405, the annular thrust piece 1 402, the annular thrust piece 2 403, the annular thrust sealing pad 404 and the O-shaped rubber ring 405 are all sleeved on the connecting rod 4, the annular thrust piece 1 402 abuts between the gland 5 and the annular block 401, the annular thrust piece 2 403 abuts between the annular block 401 and the annular thrust sealing pad 404, the annular thrust sealing pad 404 abuts between the annular thrust piece 2 403 and an end wall of the assembly groove 1 301 facing away from the gland 5, the annular thrust piece 1 402, the annular thrust piece 2 403 and the annular thrust sealing pad 404 are all located inside the assembly groove 1 301, and the outer annular walls of the annular thrust piece 1 402, the annular thrust piece 2 403 and the annular thrust sealing pad 404 are all against the assembly groove 1 The inner wall of the second assembly groove 301 is fitted, the O-shaped rubber ring 405 is located inside the second assembly groove 302, and the outer ring wall of the O-shaped rubber ring 405 is fitted with the inner wall of the second assembly groove 302, the annular thrust plate 1 402 is abutted between the pressure cover 5 and the annular block 401, the annular thrust plate 2 403 is abutted between the annular block 401 and the annular thrust sealing gasket 404, the annular thrust sealing gasket 404 is abutted between the annular thrust plate 2 403 and an end wall of the assembly groove 1 301 facing away from the pressure cover 5, and their outer ring walls are all fitted with the inner wall of the first assembly groove 301, the O-shaped rubber ring 405 is located inside the second assembly groove 302, the inner ring is stuck in the annular groove of the connecting rod 4, and the outer ring wall is fitted with the inner wall of the second assembly groove 302. Through this fine installation and setting, the sealing effect of the soft sealing structure is further improved to prevent water leakage between the first assembly groove 301 and the second assembly groove 302 and the connecting rod 4.

[0034] Specifically, in this embodiment, in order to prevent the O-shaped rubber ring 405 from sliding on the connecting rod 4, an annular groove is provided on the connecting rod 4, and the inner ring of the O-shaped rubber ring 405 is clamped in the annular groove.

[0035] Specifically, in this embodiment: the connection structure includes a socket 1201 fixedly mounted on the gate plate 12 and a fixed plate 14 fixedly mounted on the screw nut 13, and the fixed plate 14 is clamped on the inner side of the socket 1201, so that the screw nut 13 is firmly connected to the gate plate 12, ensuring that the gate plate 12 can be effectively driven to move when the screw 10 rotates.

[0036] Specifically, in the present embodiment: a rubber pad 11 is installed between the valve seat 2 and the valve bonnet 3, a rubber ring 2 503 is installed between the gland 5 and the valve bonnet 3, at least three annular mounting grooves 501 are opened on the inner ring surface of the gland 5, a rubber ring 3 502 is installed in each annular mounting groove 501, and the inner ring surface of the rubber ring 3 502 is fitted with the side surface of the connecting rod 4, thereby further enhancing the sealing between the valve seat 2 and the valve bonnet 3, between the gland 5 and the valve bonnet 3, and between the gland 5 and the connecting rod 4, thereby improving the overall sealing performance of the valve.

[0037] Specifically, in this embodiment: the connecting rod 4, the lead screw 10, the annular step 1203, the avoidance through hole 1202 and the second assembly groove 302 are coaxially arranged, and the lead screw 10 and the connecting rod 4 are integrally arranged to ensure the stability and accuracy of the transmission.

[0038] Specifically, in this embodiment: flanges 9 are integrally provided on both sides of the valve body 1 , and reinforcing ribs 101 are integrally provided between the outer side surface of the valve body 1 , the outer side surface of the flange 9 , and the outer side surface of the valve seat 2 , thereby enhancing the structural strength of the valve body 1 .

[0039] Specifically, in this embodiment: an annular boss 901 is integrally provided on the outer surface of the flange 9, and a plurality of annular grooves 902 are opened on the annular boss 901, which is convenient for connection with other pipes and other components. The annular boss 901 is provided in conjunction with the plurality of annular grooves 902 for adding a sealing ring, so that the sealing ring can be squeezed into the plurality of annular grooves 902 when locking, which can greatly improve the sealing performance of the connection with other pipes and other components.

[0040] Specifically, in this embodiment: a limit strip 202 is integrally provided on the inner wall of the guide groove 201, a limit slot is provided on the gate plate 12, and the limit strip 202 slides into the limit slot to further limit the moving direction of the gate plate 12 and ensure stable sliding of the gate plate 12.

[0041] In summary, the soft-sealed gate valve with a driving mechanism provided in this embodiment has the following advantages: 1. Through the coordinated action of the soft sealing structure (annular thrust plate 1 402, annular thrust plate 2 403, annular thrust sealing pad 404, O-shaped rubber ring 405), rubber pad 11, rubber ring 2 503, rubber ring 3 502, the first self-sealing component (fixing ring 1501, annular rubber sealing airbag 15) and the second self-sealing component (T-shaped rubber sealing plug 705), the sealing of the valve is fully guaranteed to prevent water leakage.

[0042] 2. The hand wheel 6 is connected to the lead screw 10 through the connecting rod 4, and cooperates with the lead screw nut 13 to drive the gate 12. The operation is simple, and the coaxial arrangement of the connecting rod 4, the lead screw 10 and other components and the cooperation of the limit bar 202 and the limit groove ensure the stability of the transmission and the accuracy of the movement of the gate 12.

[0043] 3. The reinforcing ribs 101 between the valve body 1, the flange 9 and the valve seat 2 enhance the overall structural strength and extend the service life of the valve.

[0044] 4. The driving mechanism 7 (cylinder 701, plugging bolt 702, spring 703) can realize the replacement of the soft sealing structure without stopping the water supply, thereby improving the maintenance efficiency and reducing the inconvenience caused by water supply stopping.

[0045] 5. Good connection sealing: The annular boss 901 and the annular groove 902 on the flange 9 are convenient for connection with other pipes and can improve the sealing of the connection.

[0046] When in use: Opening and closing: The operator turns the hand wheel 6 to drive the connecting rod 4 to rotate, and then the lead screw 10 rotates. The lead screw nut 13 on the lead screw 10 is connected to the gate 12 through the connecting structure (the clamping seat 1201, the fixing plate 14), and the rotation of the lead screw nut 13 is converted into the linear motion of the gate 12 along the guide groove 201, thereby realizing the opening and closing of the channel in the valve body 1 and adjusting the water flow.

[0047] Sealing principle: The soft sealing structure prevents water leakage between the assembly groove 1 301, the assembly groove 2 302 and the connecting rod 4; the rubber pad 11 between the valve seat 2 and the valve bonnet 3, the rubber ring 2 503 between the gland 5 and the valve bonnet 3, and the rubber ring 3 502 on the inner ring surface of the gland 5 enhance the sealing of the joints of the components.

[0048] When the soft sealing structure needs to be replaced, the operator turns the handwheel 6 to drive the connecting rod 4 to rotate, and then the lead screw 10 is rotated. The rotation of the lead screw nut 13 is converted into a linear motion of the gate plate 12 along the guide groove 201, and the lead screw nut 13 drives the gate plate 12 to move toward the annular plane 303 until the annular rubber sealing airbag 15 is tightly pressed against the annular plane 303. At this time, the T-shaped rubber sealing plug 705 is driven by the spring 703 to press against the annular step 1203 to block the avoidance through hole 1202. At the same time, the annular rubber sealing airbag 15 is pressed against the annular plane 303 to seal the lead screw nut 13 and the annular plane 303. At this time, the water inside the valve body 1 cannot be sprayed out through the assembly groove 2 302. Then the bolt 2 16 can be removed with a wrench, and then the pressure cover 5 is removed, and then the handwheel 6 is pulled outward, and the handwheel 6 is continued to be rotated to make the lead screw 10 and the lead screw nut 13 close to the lead screw nut 13. 1 and 10. When the rod nut 13 is disengaged, the connecting rod 4 and the lead screw 10 are then pulled out, and the O-ring 405, the annular thrust seal 404, the annular thrust plate 2 403, the annular thrust plate 1 402 and the rubber ring 3 502 can be easily replaced. After the new O-ring 405, the annular thrust seal 404, the annular thrust plate 2 403, the annular thrust plate 1 402 and the rubber ring 3 502 are installed on the connecting rod 4, the connecting rod 4 and the lead screw 10 are inserted into the assembly groove 1 301 and the assembly groove 2 302 in turn through the pressure cover 5, and then the hand wheel 6 is rotated in the opposite direction so that the lead screw 10 is threadedly inserted into the lead screw nut 13, and then the bolt 2 16 is installed and tightened with a wrench, and the pressure cover 5 is fixedly installed on the end of the valve cap 3 away from the valve seat 2, thereby achieving the purpose of replacing the soft sealing structure without stopping the water supply, improving the maintenance efficiency and reducing the inconvenience caused by water supply failure.

[0049] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A soft-sealed gate valve with a driving mechanism, characterized in that: include: A valve body (1), wherein a valve seat (2) is integrally provided on the valve body (1), a guide groove (201) is provided in the valve seat (2), and a valve bonnet (3) is fixedly mounted on the valve seat (2) by means of a first bolt (8), a first assembly groove (301) and a second assembly groove (302) are centrally provided at one end of the valve bonnet (3) away from the valve seat (2), the second assembly groove (302) is located between the first assembly groove (301) and the inner cavity of the valve seat (2), and the second assembly groove (302) is coaxially arranged with the first assembly groove (301), the inner diameter of the second assembly groove (302) is smaller than the inner diameter of the first assembly groove (301), the first assembly groove (301) communicates with the inner cavity of the valve seat (2) via the second assembly groove (302), and a gland (5) is fixedly mounted on one end of the valve bonnet (3) away from the valve seat (2) by means of a second bolt (16); A connecting rod (4), wherein an annular block (401) is fixedly mounted on the connecting rod (4), the annular block (401) is encapsulated in the first assembly groove (301) through the pressure cover (5), and the annular block (401) is rotatable in the first assembly groove (301), one end of the connecting rod (4) moves through the pressure cover (5) and the first assembly groove (301) in sequence and extends into the second assembly groove (302), the other end of the connecting rod (4) is located outside the pressure cover (5) and is fixedly mounted with a hand wheel (6) by screws, and a soft sealing structure is mounted on the connecting rod (4), and the soft sealing structure is used to prevent water leakage between the first assembly groove (301) and the second assembly groove (302) and the connecting rod (4); A gate plate (12), the gate plate (12) being slidably mounted in the guide groove (201), and the gate plate (12) being able to extend into the channel in the valve body (1) along the guide groove (201), an avoidance through hole (1202) being provided inside the gate plate (12), and an annular step (1203) being provided on the inner wall of the avoidance through hole (1202). a lead screw (10), wherein the lead screw (10) is located in the space between the valve cap (3) and the valve seat (2), one end of the lead screw (10) is fixedly connected to an end of the connecting rod (4) away from the hand wheel (6), and the other end of the lead screw (10) is movably extended into the avoidance through hole (1202), a lead screw nut (13) is threadedly sleeved on the lead screw (10), and the lead screw nut (13) is fixedly connected to the gate plate (12) via a connecting structure, and the lead screw (10) is driven to rotate by rotating the connecting rod (4) through the hand wheel (6), and at the same time, the lead screw nut (13) can drive the gate plate (12) to extend into or withdraw from the channel in the valve body (1) along the guide groove (201); A first self-sealing component, the first self-sealing component being mounted on an end surface of the lead screw nut (13) facing the gland (5); a second self-sealing component, the second self-sealing component being mounted in the avoidance through hole (1202), the second self-sealing component cooperating with the first self-sealing component to seal the second assembly groove (302) when the soft sealing structure needs to be replaced, so as to prevent water in the valve body (1) from being sprayed out through the second assembly groove (302); A driving mechanism (7), the driving mechanism (7) being used to drive the first self-sealing component and the second self-sealing component to automatically close the second assembly groove (302) when the lead screw (10) together with the connecting rod (4) are removed, so as to achieve the purpose of replacing the soft sealing structure without stopping water.

2. The soft-sealed gate valve with a driving mechanism according to claim 1, characterized in that: The first self-sealing component comprises a fixing ring (1501) and an annular rubber sealing airbag (15); the fixing ring (1501) is clamped in an annular clamping groove (1301); the annular clamping groove (1301) is provided on an end surface of the lead screw nut (13) facing the gland (5); the annular rubber sealing airbag (15) is located on an end surface of the lead screw nut (13) facing the gland (5); the annular rubber sealing airbag (15) is fixedly connected to the fixing ring (1501); an annular plane (303) is provided on an end surface of the second assembly groove (302) away from the first assembly groove (301); the annular plane (303) is arranged in cooperation with the annular rubber sealing airbag (15).

3. The soft-sealed gate valve with a driving mechanism according to claim 2, characterized in that: The second self-sealing component comprises a T-shaped rubber sealing plug (705), the T-shaped rubber sealing plug (705) being slidably mounted in the avoidance through hole (1202), and the side wall of the T-shaped rubber sealing plug (705) being arranged in close contact with the inner wall of the avoidance through hole (1202), and the T-shaped rubber sealing plug (705) being able to abut against the annular step (1203) under the action of the driving mechanism (7).

4. The soft-sealed gate valve with a driving mechanism according to claim 3, characterized in that: The driving mechanism (7) comprises a cylindrical body (701), a blocking bolt (702) and a spring (703); the cylindrical body (701) is fixedly mounted on the valve body (1), and the cylindrical body (701) is arranged relative to the valve seat (2); the cylindrical body (701) and the avoidance through hole (1202) are arranged coaxially; the screw thread of the blocking bolt (702) is installed at one end of the cylindrical body (701) away from the valve body (1); one end of the spring (703) is located inside the cylindrical body (701) and abuts against the screw of the blocking bolt (702). , and the other end of the spring (703) is located inside the avoidance through hole (1202) and is clamped on the end of the T-shaped rubber sealing plug (705) away from the annular step (1203), the spring (703) can drive the T-shaped rubber sealing plug (705) to abut against the annular step (1203) to block the avoidance through hole (1202), and at the same time, the spring (703) can drive the annular rubber sealing airbag (15) to seal against the annular plane (303) to close the space between the lead screw nut (13) and the annular plane (303).

5. The soft-sealed gate valve with a driving mechanism according to claim 4, characterized in that: A rubber ring 1 (704) is sleeved on the blocking bolt (702), and the rubber ring 1 (704) is tightly pressed between the head of the blocking bolt (702) and an end of the cylinder (701) away from the valve body (1).

6. The soft-sealed gate valve with a driving mechanism according to claim 4, characterized in that: The soft sealing structure comprises an annular thrust plate 1 (402), an annular thrust plate 2 (403), an annular thrust seal (404) and an O-shaped rubber ring (405). The annular thrust plate 1 (402), the annular thrust plate 2 (403), the annular thrust seal (404) and the O-shaped rubber ring (405) are all mounted on the connecting rod (4). The annular thrust plate 1 (402) abuts between the gland (5) and the annular block (401). The annular thrust plate 2 (403) abuts between the annular block (401) and the annular thrust seal (404). The annular thrust seal (404) abuts against the annular thrust plate. The annular thrust plate (402), the annular thrust plate (403) and the annular thrust seal (404) are all located inside the assembly groove (301), and the outer annular walls of the annular thrust plate (402), the annular thrust plate (403) and the annular thrust seal (404) are all fitted with the inner wall of the assembly groove (301). The O-shaped rubber ring (405) is located inside the assembly groove (302), and the outer annular wall of the O-shaped rubber ring (405) is fitted with the inner wall of the assembly groove (302).

7. The soft-sealed gate valve with a driving mechanism according to claim 6, characterized in that: The connecting rod (4) is provided with an annular groove, and the inner ring of the O-shaped rubber ring (405) is clamped in the annular groove.

8. The soft-sealed gate valve with a driving mechanism according to claim 1, characterized in that: The connection structure comprises a clamping seat (1201) fixedly mounted on the gate plate (12) and a fixing plate (14) fixedly sleeved on the lead screw nut (13), wherein the fixing plate (14) is clamped on the inner side of the clamping seat (1201).

9. The soft-sealed gate valve with a driving mechanism according to claim 1, characterized in that: A rubber pad (11) is installed between the valve seat (2) and the valve cap (3), a rubber ring 2 (503) is installed between the gland (5) and the valve cap (3), at least three annular mounting grooves (501) are provided on the inner ring surface of the gland (5), a rubber ring 3 (502) is installed in each of the annular mounting grooves (501), and the inner ring surface of the rubber ring 3 (502) is arranged to fit the side surface of the connecting rod (4).

10. The soft-sealed gate valve with a driving mechanism according to claim 9, characterized in that: The connecting rod (4), the lead screw (10), the annular step (1203), the avoidance through hole (1202) and the second assembly groove (302) are coaxially arranged, the lead screw (10) and the connecting rod (4) are integrally arranged, flanges (9) are integrally arranged on both sides of the valve body (1), and reinforcing ribs (101) are integrally arranged between the outer side surface of the valve body (1), the outer side surface of the flange (9) and the outer side surface of the valve seat (2), an annular boss (901) is integrally arranged on the outer side surface of the flange (9), and a plurality of annular grooves (902) are provided on the annular boss (901), a limit strip (202) is integrally arranged on the inner wall of the guide groove (201), and a limit slot is provided on the gate plate (12), and the limit strip (202) slides into the limit slot.

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