Sealing element replacement device convenient to install and position

Abstract

The utility model discloses a sealing part replacement device convenient to install and position, and relates to the field of sealing part replacement devices.The sealing part replacement device comprises an installation frame and a fixing assembly used for fixing the installation frame to a machine body, a first base part is fixed to the installation frame, a first channel is formed in the first base part, one end of the first channel is used for communicating with an installation hole, and the other end of the first channel is used for communicating with a second channel; the first base part is further provided with an opening and closing part used for opening and closing the first channel. A positioning rod is further included, the positioning rod is in clearance fit with the first channel and penetrates through the first channel, an insertion rod is coaxially fixed to the end of the positioning rod and matched with the mounting hole in an inserted mode, and the diameter of the positioning rod is not smaller than that of the insertion rod. The sealing element has the advantages that the coaxiality between the first channel and the mounting hole can be guaranteed, and normal operation of sealing element replacement operation is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of seal replacement devices, and in particular to a seal replacement device that is easy to install and position. Background Art

[0002] A ball valve is a shut-off valve widely used in the field of fluid control. Its opening and closing parts are spheres, which can be opened and closed by rotating 90 degrees. Ball valves have the advantages of low fluid resistance, good sealing performance, and easy operation, so they are widely used in various industrial pipelines. In terms of the sealing performance of ball valves, sealing grease plays a vital role. It can adhere tightly to the sealing surface of the ball valve to form an effective sealing layer, which can not only prevent gas or liquid leakage, but also play a lubricating role.

[0003] In the related art, a ball valve for oil and gas includes a valve body, a ball core and a valve stem. The valve body is usually divided into two half valve bodies, and the two half valve bodies are locked and fixed by fasteners for easy assembly. A medium channel is formed in the valve body, the ball core is located in the valve body and in the middle of the medium channel, one end of the valve stem is fixed to the ball core, and the side of the valve stem away from the ball core passes through the valve body, the valve stem is rotatably connected to the valve body, and an open flow channel is opened through the ball core, and the direction of the open flow channel is perpendicular to the axis of the valve stem. The valve body is provided with valve seats on both sides of the valve core, and each valve seat is tightly pressed between the ball core and the valve body. Among them, a grease injection hole is also opened on the valve body from the outside to the inside, and the grease injection hole is connected to the valve seat and is used to inject sealing grease into the gap between the ball core and the valve seat. In order to reduce the occurrence of gas or liquid leakage, a seal is inserted into the grease injection hole on the side outside the valve body. The seal is usually threadedly connected to the side wall of the grease injection hole, and the seal often adopts a one-way valve. A non-circular bayonet is provided on the side of the seal close to the outer port of the grease injection hole.

[0004] At present, in order to facilitate the replacement of seals after aging, there is a seal replacement device, including a mounting frame and a fixing assembly for fixing the mounting frame to the valve body, a sealing channel is provided on the mounting frame, one end of the sealing channel is connected to the grease injection hole, a valve is provided in the middle of the sealing channel, a sliding member is provided in the sealing channel for sliding and rotating, and an adapter head for detachably connecting the seal and matching with the non-circular bayonet is provided on the sliding member. When replacing the seal, the mounting frame is fixed to the valve body through the fixing assembly, the sealing channel is opened or closed by controlling the valve, and the sliding member can slide and rotate relative to the sealing channel, so that the adapter head is stuck in the non-circular bayonet, thereby uninstalling and replacing the seal.

[0005] When installing the mounting frame, the installer usually removes the sliding part first, and then observes whether the sealing channel is aligned with the grease injection hole. However, the outer surface of the valve body is usually an arc surface, and it is difficult to ensure the coaxiality of the sealing channel and the grease injection hole by observation, and it is easy to make the replacement of the seal difficult, so there is room for improvement. Utility Model Content

[0006] In order to improve the problem in the related art that it is difficult to ensure the coaxiality of the sealing channel and the grease injection hole by observing whether the sealing channel and the grease injection hole are aligned, and it is easy to make the replacement operation of the seal difficult, the present application provides a seal replacement device that is easy to install and position.

[0007] The present application provides a seal replacement device that is easy to install and position, which adopts the following technical solution:

[0008] A sealing replacement device that is easy to install and position, comprising a mounting frame and a fixing assembly for fixing the mounting frame to a machine body, wherein a first base member is fixed to the mounting frame, a first channel is provided on the first base member, one end of the first channel is used to communicate with a mounting hole, and an opening and closing member for opening and closing the first channel is also provided on the first base member;

[0009] It also includes a positioning rod, which is gap-fitted with the first channel and passes through the first channel. An insertion rod is coaxially fixed to the end of the positioning rod. The insertion rod is plug-fitted with the mounting hole, and the diameter of the positioning rod is not less than the diameter of the insertion rod.

[0010] By adopting the above technical solution, during the installation operation, the positioning rod is passed through the first channel, so that the insertion rod is inserted into the installation hole, and the positioning rod is used to position the mounting frame; then, the mounting frame is fixed to the machine body by the fixing assembly. In this way, the coaxiality between the first channel and the installation hole is ensured, and the normal replacement operation of the seal is ensured.

[0011] It should be pointed out that after the mounting frame is mounted on the machine body, the positioning rod is pulled out from the first channel and the insertion rod is withdrawn from the mounting hole at the same time to ensure normal replacement operation of the sealing member.

[0012] Preferably, the insertion rod is inserted into the mounting hole and threadedly connected to the mounting hole.

[0013] By adopting the above technical solution, the insertion rod is threadedly connected to the mounting hole, which helps to ensure the stability of the insertion rod and can ensure the stability of the mounting frame during the installation operation.

[0014] Preferably, a second base member is detachably connected to a side of the first base member facing away from the mounting frame, and a second channel is provided on the second base member, and the second channel is connected to the other end of the first channel;

[0015] The first channel and the second channel constitute a sealing channel, in which a sliding member is provided for sliding and rotating, and an adapting head for detachably connecting the sealing member and adapting to the non-circular bayonet is provided on the sliding member.

[0016] By adopting the above technical solution, when the seal is unloaded, the mounting frame is fixed to the body by the fixing assembly, so that the end of the first channel away from the second channel is connected to the mounting hole, and the opening and closing member opens the sealing channel; at this time, the sliding member can be slid relative to the sealing channel, so that the adapter head on the sliding member enters the mounting hole, and the adapter head is snapped into the non-circular bayonet, so that the adapter head and the seal are stably connected; then, the sliding member can be rotated, the seal is screwed out of the mounting hole and the sliding member is slid to the side away from the mounting hole, and the seal is pulled to the side of the opening and closing member away from the mounting hole. In this process, the sliding member can block the leakage of the fluid; finally, the sealing channel is closed by the opening and closing member, and the second base member is removed from the mounting frame, and the seal can be separated from the adapter head and the seal can be removed.

[0017] When installing the replacement seal, insert the adapter head into the non-circular bayonet of the seal, and install the second base member on the mounting frame; then, open the first channel through the opening and closing member, at this time, the second channel, the first channel and the mounting hole are connected, and the sliding member can be slid toward the mounting hole so that the seal passes through the mounting hole. During this process, the sliding member can block the leakage of the fluid; then, rotate the sliding member and screw the seal into the mounting hole to complete the replacement of the seal.

[0018] Through the above method, the seal can be replaced under pressure or online, which helps to reduce the occurrence of large-scale fluid leakage, reduce fluid loss, and improve the safety of seal replacement. In addition, when replacing the seal, it is not easy to cause a large pressure change of the fluid at the body position.

[0019] Preferably, the sliding member is a control rod, which passes through a sealing channel, a first limiting ring is fixed to the inner side of the second channel facing away from the first base member, a second limiting ring is fixed to the middle of the control rod, the second limiting ring is located in the sealing channel, and an outer diameter of the second limiting ring is greater than an inner diameter of the first limiting ring.

[0020] By adopting the above technical solution, the first limiting ring and the second limiting ring cooperate with each other to reduce the situation where the control rod and the adapter head are pushed out of the sealing channel by the high pressure in the installation hole, which helps to improve the safety of replacing the seal.

[0021] Preferably, a seating hole is provided on the adapter head, and an elastic member and a damping member are embedded in the seating hole. The damping member is located on the side of the elastic member close to the opening of the seating hole, and a guide surface for guiding the damping member into the non-circular bayonet is provided on the side of the damping member away from the elastic member.

[0022] By adopting the above technical solution, when the adapter head is inserted into the non-circular bayonet of the seal, the guide surface can guide the damping member to compress the elastic member and facilitate the damping member to enter the non-circular bayonet. After the adapter head is inserted into the non-circular bayonet of the seal, the elastic member presses the damping member against the side wall of the non-circular bayonet, thereby ensuring the stability of the connection between the adapter head and the seal.

[0023] Preferably, the second base member includes a connecting frame, the first base member is provided with a locking screw, one end of the locking screw is hinged to the first base member, a slot is provided on the connecting frame along the second channel, the locking screw is inserted into the slot, the end of the locking screw is threadedly connected to a limiting nut, and the limiting nut presses the second base member onto the first base member.

[0024] By adopting the above technical solution, the locking nut can be rotated by rotating the limit nut, so that the locking nut is inserted into the slot or withdrawn from the slot, thereby facilitating the installation and uninstallation of the second base member on the first base member.

[0025] Preferably, the fixing assembly comprises a linear member, and the linear member fastens the mounting frame to the machine body.

[0026] By adopting the above technical solution, the mounting frame is fastened to the machine body by the linear member, which helps to facilitate the installation and unloading operations of the mounting frame on the machine body.

[0027] Preferably, the mounting frame is further provided with an adjusting bolt on the peripheral side of the first base member, the adjusting bolt passes through the mounting frame from the side of the mounting frame away from the machine body toward the side of the machine body and is threadedly connected with the mounting frame, and the end of the adjusting bolt abuts against the machine body;

[0028] The adjusting bolts are arranged in multiple groups at intervals on the mounting frame, each group of adjusting bolts includes multiple adjusting bolts arranged at intervals, and the first base member is located between two groups of adjusting bolts.

[0029] By adopting the above technical solution, on the one hand, in actual use, the adjusting bolt can be rotated so that the end of the adjusting bolt abuts against the machine body, so that the sealing channel and the mounting hole maintain good coaxiality, which helps to ensure normal replacement operation of the seal.

[0030] On the other hand, the two sets of adjusting bolts can be used to adapt to a wide range of machine bodies. For example, when the surface of the machine body is an arc surface, the adjusting bolts on opposite sides can abut against the two sides of the machine body surface, thereby helping to ensure the stability of the mounting bracket on the machine body. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a partial explosion diagram of a ball valve structure for oil and gas in the related art;

[0032] Figure 2It is a schematic diagram of a sealing structure in the related art;

[0033] Figure 3 This is a schematic diagram of the embodiment 1 mainly showing the state in which the seal replacement device which is easy to install is installed on the machine body;

[0034] Figure 4 This is a schematic diagram mainly showing the structure of the mounting frame, the first base member and the second base member in the first embodiment;

[0035] Figure 5 This is a schematic diagram mainly showing the structure of the first base member and the second base member in the first embodiment;

[0036] Figure 6 This is a cross-sectional view mainly showing the control rod and the spherical structure of the first embodiment;

[0037] Figure 7 This is an exploded view of the control rod and the adapter structure of the first embodiment;

[0038] Figure 8 This is a schematic diagram of the first embodiment mainly showing the positioning rod used in the installation state of the mounting frame and the first base member;

[0039] Fig. 9 Schematic diagram of the first embodiment mainly showing the positioning rod and the insertion rod

[0040] Fig.10 This is an exploded view of the sealing channel and the opening and closing component structure of the second embodiment.

[0041] Reference numerals: 1, mounting frame; 11, avoidance hole; 12, adjusting bolt; 2, fixing assembly; 21, linear member; 22, cushion block; 3, first base member; 31, first channel; 32, shut-off ball valve; 321, first sealing ring; 33, opening and closing member; 331, sphere; 34, stabilizing frame; 341, locking screw; 342, limiting nut; 35, opening and closing member; 4, second base member; 41, second channel; 411, first limiting ring; 42, connecting pipe; 421, second sealing ring; 422, air vent; 43, connecting frame; 431, slot; 432, connecting hole; 433, pressure relief hole; 5, sealing channel; 6, sliding member; 61, control rod; 611, second limit ring; 612, third sealing ring; 7, adapter head; 71, mounting hole; 711, compression spring; 712, pressure ball; 8, pressure relief component; 81, pressure relief bolt; 9, positioning rod; 91, insertion rod; 100, machine body; 110, mounting hole; 120, sealing member; 130, non-circular bayonet. DETAILED DESCRIPTION

[0042] The present application is further described in detail below in conjunction with the accompanying drawings.

[0043] In the related art, see Figure 1 and Figure 2 A body 100 is provided with a mounting hole 110 , a sealing member 120 is provided in the mounting hole 110 , the sealing member 120 is threadedly connected to the mounting hole 110 , and a non-circular bayonet 130 is provided on one side of the sealing member 120 close to the outer end of the mounting hole 110 .

[0044] In one embodiment, the body 100 is a valve body of a ball valve for oil and gas, the mounting hole 110 is a grease injection hole, the sealing member 120 is a one-way valve, and the non-circular bayonet 130 on the one-way valve is configured as a hexagonal hole.

[0045] The embodiment of the present application discloses a sealing component replacement device that is easy to install and position.

[0046] Embodiment 1:

[0047] Reference Figure 3 and Figure 4 , a seal replacement device that is easy to install and position, includes a mounting frame 1 and a fixing assembly 2 for fixing the mounting frame 1 to a machine body 100. The mounting frame 1 is in the shape of a rectangular plate, and is provided with a first base member 3 and a second base member 4. The first base member 3 is fixed to the middle of the mounting frame 1, and a first channel 31 is provided on the first base member 3. The first channel 31 is perpendicular to the mounting frame 1, and one end of the first channel 31 is a butt end and is used to connect to the mounting hole 110. The first base member 3 is also provided with an opening and closing member 33 for opening and closing the first channel 31; the second base member 4 is detachably connected to the first base member 3, and is provided with a second channel 41 (see Figure 5 ), the second channel 41 is connected to the end of the first channel 31 away from the butt end and is coaxial with the first channel 31. The first channel 31 and the second channel 41 constitute a sealing channel 5, in which a sliding member 6 is provided for sliding and rotating, and an adapter head 7 for detachably connecting the sealing member 120 and matching with the non-circular bayonet 130 is provided on the side of the sliding member 6 facing the butt end of the first channel 31.

[0048] Specifically, see Figure 4 and Figure 5 The middle of the mounting frame 1 is provided with an avoidance hole 11. In this embodiment, the first base member 3 is a shutoff ball valve 32 (see Figure 6 ), the first channel 31 is the flow channel of the valve body of the intercepting ball valve 32, the opening and closing member 33 is the ball 331 of the intercepting ball valve 32, and the ball 331 is located in the middle of the first channel 31. The side of the valve body of the intercepting ball valve 32 away from the second base member 4 passes through the avoidance hole 11, that is, the first channel 31 passes through the avoidance hole 11. At the same time, the side of the intercepting ball valve 32 away from the second base member 4 is provided with a first sealing ring 321, the first sealing ring 321 is arranged around the axis of the first channel 31, and the part of the first sealing ring 321 close to the valve body of the intercepting ball valve 32 is embedded in the valve body of the intercepting ball valve 32.

[0049] In other embodiments, the first base member 3 may also be a gate valve, the first channel 31 is a flow channel of the gate valve body, and the opening and closing member 33 is a gate of the gate valve. The side of the gate valve body away from the second base member 4 passes through the avoidance hole 11, that is, the first channel 31 passes through the avoidance hole 11, and the first sealing ring 321 is embedded in the gate valve body near the gate valve body.

[0050] See also Figure 3 and Figure 5 The fixing assembly 2 includes a linear member 21, which fastens the mounting frame 1 to the machine body 100. The linear member 21 can be provided in multiple pieces, so as to be able to fasten the mounting frame 1. In this embodiment, the linear member 21 can be any one of a nylon belt, a nylon rope, a steel wire rope, etc., preferably a nylon belt. When the machine body 100 is not flush on both sides of the mounting hole 110, a pad 22 can be used to raise one side of the mounting frame 1 to ensure normal installation of the mounting frame 1 on the machine body 100.

[0051] In order to ensure the coaxiality and stability between the first passage 31 and the mounting hole 110, the mounting frame 1 is further provided with an adjusting bolt 12 on the peripheral side of the intercepting ball valve 32. The adjusting bolt 12 penetrates the mounting frame 1 from the side of the mounting frame 1 away from the machine body 100 toward the side of the machine body 100 and is threadedly connected with the mounting frame 1. The end of the adjusting bolt 12 abuts against the machine body 100. In addition, a group of adjusting bolts 12 is provided on both sides of the mounting frame 1 in the width direction. Each group of adjusting bolts 12 includes two adjusting bolts 12 arranged at intervals along the length direction of the mounting frame 1, and the first base member 3 is located at the two groups of adjusting bolts 12.

[0052] In actual use, the shutoff ball valve 32 can be opened (see Figure 6 ), install the mounting frame 1 and the shut-off ball valve 32 so that the first channel 31 is aligned with the mounting hole 110; then, the mounting frame 1 is fastened to the body 100 by the linear member 21, and the first sealing ring 321 is pressed against the valve body of the shut-off ball valve 32 and the body 100 and sealed between the mounting hole 110 and the first channel 31, wherein the mounting frame 1 can be raised by the cushion block 22; finally, rotate each adjusting bolt 12 so that each adjusting bolt 12 is pressed against the outer wall of the body 100, thereby realizing the installation of the mounting frame 1 and the shut-off ball valve 32 on the body 100.

[0053] See also Figure 5 and Figure 6The second base member 4 includes a connecting pipe 42 and a connecting frame 43. The second channel 41 is formed in the connecting pipe 42, and the connecting frame 43 is fixed to a side of the connecting pipe 42 close to the shutoff ball valve 32. The end of the connecting pipe 42 close to the shutoff ball valve 32 is stepped, and the end of the connecting pipe 42 close to the shutoff ball valve 32 penetrates into the valve body of the shutoff ball valve 32 and is located at the port of the first channel 31. The end of the connecting pipe 42 close to the shutoff ball valve 32 is sleeved with a second sealing ring 421, and the second sealing ring 421 is tightly pressed between the connecting pipe 42 and the valve body of the shutoff ball valve 32. A stabilizing frame 34 is fixed on the valve body of the intercepting ball valve 32. The stabilizing frame 34 is provided with a locking screw 341. One end of the locking screw 341 is hinged to the stabilizing frame 34. A slot 431 is provided along the second channel 41 on the connecting frame 43. The locking screw 341 is inserted into the slot 431. The end of the locking screw 341 is threadedly connected with a limiting nut 342. The limiting nut 342 presses the connecting frame 43 onto the stabilizing frame 34. In addition, one locking screw 341 is provided on each of the two sides of the stabilizing frame 34 located in the radial direction of the first channel 31. Both the slot 431 and the limiting nut 342 correspond to the locking screw 341 one by one. In actual installation, the connecting pipe 42 is inserted into the valve body of the shut-off ball valve 32 at one end of the connecting frame 43, and the connecting frame 43 is made to abut against the stabilizing frame 34; then, the two locking screws 341 can be rotated so that the two locking screws 341 are respectively embedded in the two slots 431; then, the two limit nuts 342 are tightened to press the connecting frame 43 onto the stabilizing frame 34.

[0054] See also Figure 6 and Figure 7 The sliding member 6 is a control rod 61, and the control rod 61 passes through the sealing channel 5. The inner wall of the second channel 41 away from the intercepting ball valve 32 is fixed with a first limiting ring 411. The middle part of the control rod 61 is fixed with a second limiting ring 611. The second limiting ring 611 is located in the sealing channel 5, and the outer diameter of the second limiting ring 611 is greater than the inner diameter of the first limiting ring 411. A third sealing ring 612 is sleeved on the second limiting ring 611, and the inner side of the third sealing ring 612 is embedded in the second limiting ring 611, and the third sealing ring 612 is tightly pressed against the side wall of the second channel 41 and the second limiting ring 611. In this embodiment, the diameters of the flow channels of the first channel 31 and the ball 331 of the intercepting ball valve 32 are not less than the diameter of the second channel 41. Preferably, the diameters of the flow channels of the first channel 31 and the ball 331 of the intercepting ball valve 32 are equal to the diameter of the second channel 41. At the same time, in order to facilitate the control rod 61 to slide in the sealing channel 5, a vent hole 422 connecting the outside and the second channel 41 is opened on the side of the connecting pipe 42 away from the shut-off ball valve 32. The vent hole 422 is located on the side of the second limiting ring 611 close to the shut-off ball valve 32.

[0055] The adapter head 7 is fixed to the end of the control rod 61. A seating hole 71 is provided on the adapter head 7, and the mounting hole 110 is arranged radially along the control rod 61. An elastic member and a damping member are embedded in the seating hole 71. The elastic member is a compression spring 711, and the damping member is a pressing ball 712. The pressing ball 712 is located on the side of the compression spring 711 close to the opening of the seating hole 71, and the spherical surface of the pressing ball 712 serves as a guiding surface for guiding the pressing ball 712 to enter the non-circular bayonet 130. The side wall of the opening of the seating hole 71 can be deformed by extrusion, so that the diameter of the opening of the seating hole 71 is smaller than the diameter of the pressing ball 712, thereby preventing the pressing ball 712 from escaping from the opening. When a hexagonal opening is provided on the sealing member 120, the adapter head 7 is hexagonal and is adapted to the hexagonal opening on the sealing member 120.

[0056] See also Figure 4 and Figure 6 In order to ensure the stability of the second base member 4 when unloading, a connecting hole 432 is provided on the connecting frame 43. The axis of the connecting hole 432 is perpendicular to the axis of the second channel 41, and one end of the connecting hole 432 is connected to the second channel 41. A pressure relief component 8 is also provided on the connecting frame 43. The pressure relief component 8 includes a pressure relief bolt 81. The pressure relief bolt 81 penetrates into the connecting hole 432 from the side of the connecting hole 432 away from the second channel 41 and is threadedly connected to the connecting hole 432. A pressure relief hole 433 is also provided on the connecting frame 43. One end of the pressure relief hole 433 is connected to the middle of the connecting hole 432, and the other end of the pressure relief hole 433 is connected to the outside of the connecting frame 43. When unloading the second base member 4, the pressure relief bolt 81 can be loosened first, and the second channel 41 can be slowly depressurized, and then the second base member 4 can be unloaded, so as to reduce the occurrence of injuries caused by high pressure when unloading the second base member 4.

[0057] See also Figure 8 and Fig. 9 In order to ensure the coaxiality between the sealing channel 5 and the mounting hole 110, the sealing member replacement device for facilitating installation and positioning further includes a positioning rod 9, which is clearance-matched with the first channel 31 and passes through the first channel 31 (see Figure 6 ), the end of the positioning rod 9 is integrally connected with an insertion rod 91, the insertion rod 91 is coaxial with the positioning rod 9, the insertion rod 91 is inserted into the mounting hole 110 and is threadedly connected with the mounting hole 110, and the diameter of the positioning rod 9 is not less than the diameter of the insertion rod 91. It should be pointed out that the positioning rod 9 is used in the installation operation of the mounting frame 1 and the first base member 3. After the mounting frame 1 is installed, the positioning rod 9 is rotated so that the insertion rod 91 is screwed out of the mounting hole 110, and the positioning rod 9 and the insertion rod 91 are pulled out of the first channel 31. During the seal replacement operation, the control rod 61 and the adapter head 7 can be normally inserted into the first channel 31 without causing interference.

[0058] The implementation principle of a seal replacement device that is easy to install and position in the embodiment of the present application is as follows:

[0059] During installation, the insertion rod 91 is screwed into the installation hole 110, and the intercepting ball valve is opened; then, the mounting frame 1 and the intercepting ball valve 32 are installed, and the positioning rod 9 passes through the first channel 31. At this time, the first channel 31 and the mounting hole 110 are coaxial under the action of the positioning rod 9; then, the mounting frame 1 is fastened to the body 100 through the linear member 21, and the first sealing ring 321 is pressed between the valve body of the intercepting ball valve 32 and the body 100 and sealed between the mounting hole 110 and the first channel 31, wherein the mounting frame 1 can be raised by the pad 22; then, each adjustment is rotated The joint bolts 12 are adjusted so that each adjusting bolt 12 abuts against the outer wall of the body 100, and the insertion rod 91 can be screwed out of the mounting hole 110 by rotating the positioning rod 9, and the positioning rod 9 and the insertion rod 91 can be pulled out from the first channel 31; finally, the connecting pipe 42 is inserted into the valve body of the shut-off ball valve 32 at one end of the connecting frame 43, so that the connecting frame 43 abuts against the stabilizing frame 34, and the two locking screws 341 are rotated so that the two locking screws 341 are respectively embedded in the two slots 431, and the two limit nuts 342 are tightened to press the connecting frame 43 onto the stabilizing frame 34.

[0060] When the seal 120 is uninstalled, the control rod 61 can be pushed to make the adapter head 7 on the control rod 61 enter the installation hole 110, so that the adapter head 7 is stuck in the non-circular bayonet 130. At the same time, under the guidance of the spherical surface of the pressing ball 712, the pressing ball 712 will compress the compression spring 711. After the pressing ball 712 enters the non-circular bayonet 130, the compression spring 711 presses the pressing ball 712 tightly against the side wall of the non-circular bayonet 130 to ensure the stability of the connection between the adapter head 7 and the seal 120. Then , the control rod 61 can be rotated to screw the seal 120 out of the mounting hole 110; then, the control rod 61 is slid toward the side away from the mounting hole 110, and the seal 120 is pulled to the side of the ball 331 away from the mounting hole 110; then, the sealing channel 5 is closed by the ball 331, the pressure relief bolt 81 is loosened, and the second channel 41 is slowly relieved of pressure; finally, the second base member 4 is removed from the mounting frame 1, and the seal 120 can be separated from the adapter head 7, and the seal 120 is removed.

[0061] When installing the replacement seal 120, insert the adapter head 7 into the non-circular bayonet 130 of the seal 120, and install the second base member 4 on the mounting frame 1; then, tighten the pressure relief bolt 81, open the shut-off ball valve 32, and the first channel 31 is opened. At this time, the second channel 41, the first channel 31 and the mounting hole 110 are connected, and the control rod 61 can be slid toward the mounting hole 110 so that the seal 120 penetrates the mounting hole 110; then, rotate the control rod 61 to screw the seal 120 into the mounting hole 110, and the replacement of the seal 120 is completed.

[0062] Embodiment 2:

[0063] See also Fig.10 The difference between this embodiment and the first embodiment is that the inner wall of the second channel 41 on the side away from the first base member 3 does not have the first limit ring 411, the inner diameters of the first channel 31 and the second channel 41 are equal, and the control rod 61 can be inserted into or withdrawn from the second channel 41 from the end of the second channel 41 away from the first base member 3. The first base member 3 is provided with an opening and closing component 35 for opening and closing the first channel 31, and the opening and closing component 35 can be any one of a ball valve, a gate valve, etc.

[0064] It should be noted that, in this embodiment, the first base member 3 is not the intercepting ball valve 32 described in the first embodiment, and the first base member 3 may be a general pipeline, in which the first channel 31 is formed; the first base member 3 may also be a block having the first channel 31. Meanwhile, in other embodiments, the first base member 3 and the second base member 4 may be integrated, and the first channel 31 and the second channel 41 are continuous and uninterrupted.

[0065] When the seal 120 is uninstalled, the control rod 61 can be pushed to allow the adapter head 7 on the control rod 61 to enter the installation hole 110, so that the adapter head 7 is stuck in the non-circular bayonet 130. At the same time, under the guidance of the spherical surface of the pressing ball 712, the pressing ball 712 will compress the compression spring 711. After the pressing ball 712 enters the non-circular bayonet 130, the compression spring 711 presses the pressing ball 712 tightly against the side wall of the non-circular bayonet 130 to ensure the stability of the connection between the adapter head 7 and the seal 120. Then, Turn the control rod 61 to screw the seal 120 out of the mounting hole 110; then, slide the control rod 61 to the side away from the mounting hole 110, and pull the seal 120 to the side of the opening and closing component 35 away from the mounting hole 110; then, close the sealing channel 5 through the opening and closing component 35, loosen the pressure relief bolt 81, and relieve the pressure on the second channel 41; finally, withdraw the control rod 61 and the seal 120 from the second channel 41, and the seal 120 can be separated from the adapter head 7, and the seal 120 can be removed.

[0066] When installing the replacement seal 120, insert the adapter head 7 into the non-circular bayonet 130 of the seal 120, and insert the seal 120 and the control rod 61 into the second channel 41; then, tighten the pressure relief bolt 81, open the sealing channel 5 through the opening and closing component 35, and the first channel 31 is opened. At this time, the second channel 41, the first channel 31 and the mounting hole 110 are connected, and the control rod 61 can be slid toward the mounting hole 110 so that the seal 120 penetrates the mounting hole 110; then, rotate the control rod 61 to screw the seal 120 into the mounting hole 110, and the replacement of the seal 120 is completed.

[0067] It should be pointed out that in order to reduce the possibility of the control rod 61 and the seal 120 being rushed out of the sealing channel 5 by the high-pressure fluid, a certain pressure should be applied to the control rod 61 before the seal 120 is screwed out of the mounting hole 110 and the pressure on the sealing channel 5 is relieved, and between opening the sealing channel 5 and screwing the replacement seal 120 into the mounting hole 110, so as to offset the thrust of the high-pressure fluid on the seal 120.

[0068] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sealing member (120) replacement device that is easy to install and position, comprising a mounting frame (1) and a fixing assembly (2) for fixing the mounting frame (1) to a machine body (100), characterized in that: A first base member (3) is fixed to the mounting frame (1), a first channel (31) is provided on the first base member (3), one end of the first channel (31) is used to communicate with the mounting hole (110), and an opening and closing member (33) is also provided on the first base member (3) for opening and closing the first channel (31); It also includes a positioning rod (9), the positioning rod (9) is clearance-matched with the first channel (31) and passes through the first channel (31), an insertion rod (91) is coaxially fixed to the end of the positioning rod (9), the insertion rod (91) is plug-fitted with the mounting hole (110), and the diameter of the positioning rod (9) is not less than the diameter of the insertion rod (91).

2. A sealing member (120) replacement device that is easy to install and position according to claim 1, characterized in that: The insertion rod (91) is inserted into the mounting hole (110) and is threadedly connected to the mounting hole (110).

3. A sealing member (120) replacement device that is easy to install and position according to claim 1, characterized in that: A second base member (4) is detachably connected to a side of the first base member (3) facing away from the mounting frame (1), and a second channel (41) is provided on the second base member (4), and the second channel (41) is connected to the other end of the first channel (31); The first channel (31) and the second channel (41) constitute a sealing channel (5), a sliding member (6) is slidably and rotatably arranged in the sealing channel (5), and an adaptor head (7) is arranged on the sliding member (6) for detachably connecting the sealing member (120) and adapting to the non-circular bayonet (130).

4. A sealing member (120) replacement device that is easy to install and position according to claim 3, characterized in that: The sliding member (6) is a control rod (61), and the control rod (61) passes through a sealing channel (5). A first limiting ring (411) is fixed to the inner side of the second channel (41) on a side facing away from the first base member (3). A second limiting ring (611) is fixed to the middle of the control rod (61), and the second limiting ring (611) is located in the sealing channel (5). The outer diameter of the second limiting ring (611) is greater than the inner diameter of the first limiting ring (411).

5. The sealing member (120) replacement device that is easy to install and position according to claim 3, characterized in that: The adapter head (7) is provided with a seating hole (71), an elastic member and a damping member are embedded in the seating hole (71), the damping member is located on a side of the elastic member close to the opening of the seating hole (71), and a guide surface for guiding the damping member to enter the non-circular bayonet (130) is provided on a side of the damping member facing away from the elastic member.

6. A sealing member (120) replacement device that is easy to install and position according to claim 3, characterized in that: The second base member (4) comprises a connecting frame (43); the first base member (3) is provided with a locking screw (341); one end of the locking screw (341) is hinged to the first base member (3); a slot (431) is provided on the connecting frame (43) along the second channel (41); the locking screw (341) is inserted into the slot (431); the end of the locking screw (341) is threadedly connected to a limiting nut (342); the limiting nut (342) presses the second base member (4) onto the first base member (3).

7. The sealing member (120) replacement device that is easy to install and position according to claim 1, characterized in that: The fixing assembly (2) comprises a linear member (21), and the linear member (21) fastens the mounting frame (1) to the machine body (100).

8. The sealing member (120) replacement device that is easy to install and position according to claim 1, characterized in that: The mounting frame (1) is also provided with an adjusting bolt (12) on the peripheral side of the first base member (3); the adjusting bolt (12) penetrates the mounting frame (1) from the side of the mounting frame (1) facing away from the machine body (100) toward the side of the machine body (100) and is threadedly connected to the mounting frame (1); and the end of the adjusting bolt (12) abuts against the machine body (100); The adjusting bolts (12) are arranged in a plurality of groups at intervals on the mounting frame (1), each group of adjusting bolts (12) comprises a plurality of adjusting bolts (12) arranged at intervals, and the first base member (3) is located between two groups of adjusting bolts (12).

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