A lip-type seal ring mounting device

Abstract

The application discloses a kind of installation devices of lip edge type sealing ring, including main module, push-out module and return spring;Main module includes horizontal pole, first connecting rod and installation cylinder;The top of installation cylinder is provided with a first connecting rod at left and right ends respectively;Sealing ring installation opening is set in the bottom of installation cylinder;The top of two first connecting rods is fixedly connected with the left and right ends of the horizontal pole;The top of installation cylinder is provided with a push-out module mounting hole at front and rear ends respectively;Push-out module includes vertical pole, second connecting rod and push-out plate;Each push-out module mounting hole is vertically penetrated by a second connecting rod respectively;The top of two second connecting rods is fixedly connected with vertical pole;The bottom of two second connecting rods is fixedly connected with the top of push-out plate;The horizontal pole of main module is connected with the vertical pole of push-out module by return spring;The application can conveniently, safely and reliably install lip edge type sealing ring in reversing valve body in reverse, ensure installation quality, improve installation efficiency.

Description

Technical Field

[0001] This invention relates to the field of mechanical assembly technology, and in particular to an installation device for a lip-type sealing ring. Background Technology

[0002] Valves in pneumatic tools, such as three-position five-way directional valves and two-position five-way directional valves, are the main control components in the pneumatic industry. These valves, under the control of compressed air, electromagnetic force or springs, change the compressed air path by piston reversal, and provide compressed air to actuators such as cylinders and pneumatic motors.

[0003] To ensure a tight seal when compressed air passes through the reversing valve's air passage, lip seals such as E-rings and QY-rings are typically installed symmetrically between the valve core and the valve body.

[0004] See Figure 1a , Figure 1b For lip-type seals, one end is larger than the other. The outer diameter of the larger end (i.e., the large diameter end, which is the lip side) is larger than the inner diameter (i.e., the inner cavity diameter) of the valve body to be installed, while the outer diameter of the smaller end (i.e., the small diameter end, which is the other side, not the lip side) is smaller than the inner diameter (i.e., the inner cavity diameter) of the valve body to be installed.

[0005] When installing a lip-type sealing ring in the forward direction, i.e., the smaller diameter end enters the directional valve body first, the operation is relatively easy. Conversely, when installing it in the reverse direction, the larger diameter end (i.e., the lip side) enters the directional valve body (specifically, the internal mounting cavity of the directional valve body) first. Since the outer diameter of the larger diameter end is larger than the inner diameter (i.e., the inner cavity diameter) of the directional valve body to be installed, the installation is more difficult.

[0006] Currently, when installing lip-type sealing rings in the forward direction, the common method is to insert the lip into the valve body of the directional valve using a push-insertion method. This process is quite cumbersome, requiring a high level of experience from the operator and making it difficult to reliably guarantee the quality of installation. Furthermore, it has low installation efficiency and significantly increases labor costs.

[0007] It should be noted that the existing insertion and removal process is as follows: First, tilt one side of the lip of the lip-type sealing ring and insert it into the cavity of the reversing valve body. Since the diameter of the lip side is larger than the inner diameter of the mounting hole in the cavity, the lip will not be able to enter the hole at a certain position. At this time, use a flathead screwdriver or similar tool to find the boundary position of the lip inside and outside the cavity mounting hole, and push the lip outside the cavity into the cavity. Then, use this method in sequence to push all the lips outside the cavity into the cavity mounting hole. Finally, push the lip-type sealing ring to its installation position.

[0008] Furthermore, during the assembly of the sealing ring (i.e., to its specific installation position), the lip of the lip-type sealing ring typically passes through multiple holes. The edges of these holes are prone to scratching the lip, which can easily cause poor sealing of the directional control valve body, severely affecting the overall installation quality of the valve. When the directional control valve body is not sealing properly, the lip-type sealing ring needs to be disassembled and reinstalled, further increasing installation costs. Summary of the Invention

[0009] The purpose of this invention is to address the technical deficiencies of existing technologies by providing an installation device for lip-type sealing rings.

[0010] To this end, the present invention provides an installation device for a lip-type sealing ring, comprising a main body module, an ejection module, and a return spring;

[0011] The main module includes a crossbar, a first connecting rod, and a mounting cylinder;

[0012] A first connecting rod is vertically installed at each of the left and right ends of the top of the cylindrical, hollow mounting tube;

[0013] The bottom of the mounting cylinder is provided with a sealing ring installation opening;

[0014] The tops of the two first connecting rods are fixedly connected to the left and right ends of the crossbar;

[0015] At the front and rear ends of the top of the mounting cylinder, there is a module ejection mounting hole;

[0016] The ejection module includes a longitudinal rod, a second connecting rod, and an ejection plate;

[0017] A second connecting rod passes vertically through each ejection module mounting hole;

[0018] The tops of the two second connecting rods are fixedly connected to the front and rear ends of the longitudinal rod;

[0019] The bottom of the two second connecting rods is fixedly connected to the top of a circular ejector plate;

[0020] The ejection plate is located directly below the two ejection module mounting holes;

[0021] The vertical bar of the ejector module is located directly below the horizontal bar of the main module;

[0022] The crossbar of the main module and the longitudinal bar of the ejection module are connected by a return spring;

[0023] The sealing ring installation opening of the mounting cylinder is used to insert a lip-type sealing ring that needs to be installed into the internal mounting cavity of the reversing valve.

[0024] The inner cavity of the mounting cylinder is used to accommodate the lip-type sealing ring.

[0025] Preferably, the two ejector module mounting holes and the two first connecting rods are symmetrically distributed in a cross shape on the mounting cylinder at the mounting positions on the top of the mounting cylinder.

[0026] Preferably, the mounting device for the lip seal is used to install the lip seal into the internal mounting cavity of the reversing valve;

[0027] Lip-type sealing rings include the lip side and the non-lip side;

[0028] The lip side of the lip-type sealing ring has an interference fit with the mounting cylinder;

[0029] The non-lip side of the lip-type sealing ring makes clearance fit contact with the mounting cylinder.

[0030] Preferably, when a lip-type sealing ring is placed inside the mounting cylinder, the non-lip side of the lip-type sealing ring is in contact with the ejection plate of the ejection module.

[0031] Preferably, the top center of the mounting cylinder has a central through hole;

[0032] The diameter of the central through hole is smaller than the outer diameter of the non-lip side of the lip-type sealing ring.

[0033] Preferably, the upper and lower ends of the return spring are respectively connected to the middle position of the horizontal bar of the main module and the middle position of the vertical bar of the ejection module.

[0034] Preferably, a first return spring fixing groove is provided at the middle position of the crossbar in the lateral direction;

[0035] At the longitudinal middle position of the longitudinal rod, there is a second return spring fixing groove distributed in a ring;

[0036] The return spring has a hook at each of its upper and lower ends;

[0037] Two hooks are respectively attached to the first return spring fixing groove and the second return spring fixing groove.

[0038] Preferably, for the main module, the two first connecting rods are symmetrically distributed from left to right;

[0039] For the ejection module, the two second connecting rods are symmetrically distributed front and back.

[0040] Preferably, the outer diameter of the ejector plate is smaller than the inner diameter of the mounting cylinder;

[0041] The diameter of the second connecting rod is smaller than the diameter of the mounting hole of the ejector module, and the two are clearance fit.

[0042] Preferably, the two first connecting rods are parallel to each other, and the distance between them is less than the outer diameter of the mounting cylinder;

[0043] The two second connecting rods are parallel to each other, and the distance between them is less than the outer diameter of the mounting cylinder;

[0044] The outer diameter of the mounting cylinder is smaller than the inner diameter of the internal mounting cavity of the reversing valve.

[0045] As can be seen from the technical solution provided by the present invention above, compared with the prior art, the present invention provides an installation device for lip-type sealing rings. Its structure is scientifically designed and can effectively solve the problems of cumbersome operation and easy damage to the sealing ring during the reverse installation of lip-type sealing rings. It can conveniently, safely and reliably install lip-type sealing rings in the reverse installation of the directional valve body, ensuring the quality of installation and improving installation efficiency, which has significant practical significance.

[0046] After testing, the installation device for lip-type sealing rings provided by this invention can meet the usage requirements of multiple different models of lip-type sealing rings during reverse installation. It can quickly, accurately, and correctly install the lip-type sealing rings into place, effectively protecting the sealing rings from scratches during the installation process. It effectively solves the problems of lip-type sealing rings requiring experience, being time-consuming, and easily damaging the sealing ring lip during installation, thus improving work efficiency and ensuring product quality. Attached Figure Description

[0047] Figure 1a A schematic diagram of the three-dimensional structure of a lip-type sealing ring;

[0048] Figure 1b A schematic diagram of the three-dimensional structure of a lip-type sealing ring when placed upside down;

[0049] Figure 2a A three-dimensional structural diagram of the installation state when installing a lip-type sealing ring in the valve body of a reversing valve using the installation device for the lip-type sealing ring provided by the present invention.

[0050] Figure 2b This is a three-dimensional structural diagram illustrating the installation state of a lip-type sealing ring when installed in the valve body of a reversing valve using the installation device for the lip-type sealing ring provided by this invention. Figure 2b The directional valve shown is the directional valve after one side of the valve body has been separated.

[0051] Figure 3 This invention provides an installation device for lip-type sealing rings, showing the state of a lip-type sealing ring placed inside the installation cylinder.

[0052] Figure 4This is a schematic diagram showing the state of a lip-type sealing ring being pushed out of the mounting cylinder after reaching the mounting position (i.e., the internal mounting cavity) in the valve body of a directional valve using the mounting device for installing a lip-type sealing ring provided by the present invention. The structure of the directional valve is omitted in this diagram.

[0053] Figure 5 A three-dimensional structural schematic diagram of an installation device for a lip-type sealing ring provided by the present invention;

[0054] Figure 6 A front view of an installation device for a lip-type sealing ring provided by the present invention;

[0055] Figure 7 A three-dimensional structural diagram of the main module in an installation device for a lip-type sealing ring provided by the present invention;

[0056] Figure 8 A three-dimensional structural diagram of the ejection module in the installation device for a lip-type sealing ring provided by the present invention;

[0057] Figure 9 A three-dimensional structural diagram of the return spring in the mounting device for a lip-type sealing ring provided by the present invention;

[0058] In the diagram: 1-Main module; 2-Ejection module; 3-Return spring;

[0059] 101-Horizontal bar; 102-First connecting rod; 103-Mounting cylinder; 104-Ejection module mounting hole; 105-First return spring fixing groove;

[0060] 201 - Longitudinal rod; 202 - Second connecting rod; 203 - Push-out plate; 204 - Second return spring fixing groove; 301 - Return spring;

[0061] 1001 - Lip seal; 1002 - Directional control valve. Detailed Implementation

[0062] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0063] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0064] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0065] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0066] See Figure 1a , Figure 1b , Figures 2a to 2b , Figures 3 to 9 The present invention provides an installation device for a lip-type sealing ring, comprising a main body module 1, an ejection module 2, and a return spring 3;

[0067] The main module 1 includes a crossbar 101, a first connecting rod 102, and a mounting cylinder 103;

[0068] A first connecting rod 102 is vertically installed at the top left and right ends of the cylindrical, hollow mounting tube 103;

[0069] The bottom of the mounting cylinder 103 is provided with a sealing ring mounting opening 1031;

[0070] It should be noted that the bottom of the mounting cylinder 103 is completely open, and the area covered by the sealing ring mounting opening is equal to the area of ​​the bottom of the mounting cylinder 103 excluding the four edges of the bottom.

[0071] The tops of the two first connecting rods 102 are fixedly connected to the left and right ends of the crossbar 101;

[0072] At the front and rear ends of the top of the mounting cylinder 103, there is a module ejection mounting hole 104 respectively;

[0073] The ejection module 2 includes a longitudinal rod 201, a second connecting rod 202, and an ejection plate 203;

[0074] A second connecting rod 202 passes vertically through each of the ejection module mounting holes 104;

[0075] The tops of the two second connecting rods 202 are fixedly connected to the front and rear ends of the longitudinal rod 201;

[0076] The bottom of the two second connecting rods 202 is fixedly connected to the top of a circular ejector plate 203;

[0077] The ejection plate 203 is located directly below the two ejection module mounting holes 104.

[0078] The vertical bar 201 of the launch module 2 is located directly below the horizontal bar 101 of the main module 1;

[0079] The crossbar 101 of the main module 1 and the vertical bar 201 of the ejection module 2 are connected by a return spring 3;

[0080] The sealing ring mounting opening 1031 of the mounting cylinder 103 is used to insert the lip-type sealing ring 1001 that needs to be installed (i.e. needs to be installed in the internal mounting cavity 10020 of the reversing valve 1002).

[0081] The inner cavity of the mounting cylinder 103 is used to accommodate the lip-type sealing ring 1001.

[0082] In this invention, specifically, the lip-type sealing ring mounting device is used to install the lip-type sealing ring 1001 into the internal mounting cavity 10020 of the reversing valve 1002.

[0083] In this invention, specifically, the two ejection module mounting holes 104 and the two first connecting rods 102 are symmetrically distributed in a "cross" shape on the mounting cylinder 103 at the mounting positions on the top of the mounting cylinder 103.

[0084] In this invention, specifically, the lip-type sealing ring 1001 includes a lip side (i.e., the large diameter end) and a non-lip side (i.e., the small diameter end);

[0085] The lip side (i.e., the large diameter end) of the lip-type sealing ring 1001 is in an interference fit contact connection with the mounting cylinder 103;

[0086] The non-lip side (i.e., the small diameter end) of the lip-type sealing ring 1001 has a clearance fit with the mounting cylinder 103.

[0087] In this invention, specifically, the outer diameter of the lip side 10010 (i.e., the large diameter end) of the lip-type sealing ring 1001 is greater than the outer diameter of the non-lip side (i.e., the small diameter end) of the lip-type sealing ring 1001.

[0088] The inner diameter of the mounting sleeve 103 is smaller than the outer diameter of the lip side (i.e., the large diameter end) of the lip seal 1001; for example, by 2 or 3 millimeters.

[0089] The inner diameter of the mounting sleeve 103 is larger than the outer diameter of the non-lip side (i.e., small diameter end) of the lip seal 1001; for example, by 2 mm.

[0090] In practice, when the lip-type sealing ring 1001 to be installed is placed inside the mounting cylinder 103, the non-lip side (i.e., the small diameter end) of the lip-type sealing ring 1001 is in contact with the ejection plate 203 of the ejection module 2.

[0091] Based on the above design, when the lip seal 1001 is placed inside the mounting cylinder 103, even if the mounting cylinder 103 is in a vertical position, the lip seal 1001 will not fall off from the mounting cylinder 103, thus achieving a reliable limiting function. This allows for convenient installation of the lip seal in the internal mounting cavity of a directional valve with different opening orientations (e.g., the opening of the internal mounting cavity is vertically upward or horizontally to the left, and the internal mounting cavity is used to install the valve core and the lip seal).

[0092] It should be noted that the lip side (i.e., the large diameter end) of lip-type seals is usually thinner and more easily damaged; the non-lip side (i.e., the small diameter end) of lip-type seals is thicker (compared to the lip side) and is usually solid, making it less prone to damage than the lip side (i.e., the large diameter end).

[0093] In this invention, specifically, the top center position of the mounting cylinder 103 has a central through hole 1032;

[0094] The diameter of the central through-hole 1032 is larger than the outer diameter of the non-lip side (i.e., the small-diameter end) of the lip-type sealing ring 1001. This through-hole is reserved for the passage of the valve core 10021. For some valves, to achieve their intended use, the valve core 10021 has a larger diameter in the middle and smaller diameters on both sides, requiring the valve core to be installed before the sealing ring is installed. Similarly, the through-hole at the center of the annular ejector plate 203 serves the same purpose as the central through-hole 1032.

[0095] In this invention, specifically, the upper and lower ends of the return spring 3 are respectively connected to the middle position of the horizontal bar 101 of the main module 1 and the middle position of the vertical bar 201 of the push-out module 2.

[0096] In this invention, specifically, a first return spring fixing groove 105 is provided at the middle position of the horizontal bar 101;

[0097] At the longitudinal middle position of the longitudinal rod 201, a second return spring fixing groove 204 is provided in a circumferential distribution;

[0098] The return spring 3 has a hook at each of its upper and lower ends;

[0099] Two hooks are respectively attached to the first return spring fixing groove 105 and the second return spring fixing groove 204.

[0100] It should be noted that, in this invention, the return spring 3 is a low-tension tension spring made of stainless steel wire with hooks at both ends. Through the first return spring fixing groove 105 and the second return spring fixing groove 204, the return spring 3 is installed between the crossbar 101 of the main body module 1 and the vertical bar 201 of the ejection module 2, maintaining the relative position between the main body module 1 and the ejection module 2, preventing accidental human intervention. After the lip-type sealing ring is installed in place, one hand presses down on the vertical bar 201 until the large-diameter end of the sealing ring 1001 is in contact with other parts in the cavity. Then, the other hand lifts the crossbar 101 upwards, pushing the sealing ring 1001 out of the mounting cylinder 103 to the installation position. Finally, the entire tooling is removed from the valve body 1002, completing the installation of the sealing ring 1001.

[0101] In this invention, specifically, for the main module 1, the two first connecting rods 102 are symmetrically distributed from left to right;

[0102] For the launch module 2, the two second connecting rods 202 are symmetrically distributed front and back.

[0103] In this invention, specifically, the mounting cylinder 103 is a thin-walled circular ring with a hollow, thick bottom, and its dimensions are determined according to the outer diameter of the lip-type sealing ring and the reversing valve core.

[0104] In this invention, specifically, the diameter of the through hole of the mounting cylinder 103 is larger than the outer diameter of the valve core of the reversing valve that requires the installation of a lip-type sealing ring.

[0105] In this invention, specifically, the crossbar 101, the first connecting rod 102, and the mounting cylinder 103 are all made of stainless steel or are made of non-metallic 3D printing.

[0106] In this invention, specifically, the longitudinal rod 201, the connecting rod 202, and the ejector plate 203 are all made of stainless steel or are made of non-metallic 3D printing.

[0107] In this invention, specifically, the outer diameter of the ejector plate 203 is smaller than the inner diameter of the mounting cylinder 103.

[0108] It should be noted that, in this invention, the two ends of the longitudinal rod 201 are connected to two second connecting rods 202. After passing through the two ejection module mounting holes 104 on the mounting cylinder 103, the two second connecting rods 202 are fixed on the ejection plate 203. The diameter of the ejection plate 203 is determined according to the diameter of the mounting cylinder 103.

[0109] It should be noted that, for this invention, the main module is the foundation of the entire device. The push-out module and the return spring are both mounted on the main module. During the installation process, the lip-type sealing ring is also temporarily placed in the mounting cylinder 103 of the main module.

[0110] In this invention, specifically, the diameter of the second connecting rod 202 is smaller than the diameter of the ejector module mounting hole 104, and the two are in clearance fit.

[0111] The second connecting rod 202 of the ejection module 22 is connected to the main module 1 through the ejection module mounting hole 104 on the mounting cylinder 103, and can move back and forth in the ejection module mounting hole 104 under the action of external force.

[0112] In this invention, specifically, the two first connecting rods 102 are parallel to each other, and the distance between them is less than the outer diameter of the mounting cylinder 103;

[0113] The two second connecting rods 202 are parallel to each other, and the distance between them is less than the outer diameter of the mounting cylinder 103;

[0114] The outer diameter of the mounting cylinder 103 is smaller than the inner diameter of the internal mounting cavity of the directional valve that requires the installation of a lip-type sealing ring.

[0115] Based on the above design, the entire device of the present invention can be easily placed into the internal mounting cavity of the reversing valve that requires the installation of a lip-type sealing ring.

[0116] In this invention, specifically, the lip-type sealing ring mounting device is used to install the lip-type sealing ring 1001 into the internal mounting cavity of the reversing valve.

[0117] To better understand the technical solution of the present invention, the working process of the present invention is described below.

[0118] First, place the lip-type sealing ring 1001 into the mounting cylinder 103 of the main module 1 (the sealing ring can be placed into the mounting cylinder 103 directly by hand) so that the lip-type sealing ring 1001 fits against the ejection plate 203 of the ejection module 2; at this time, the non-lip side (i.e., the small diameter end) of the lip-type sealing ring 1001 fits against the ejection plate 203 of the ejection module 2, and the lip side (i.e., the large diameter end) of the lip-type sealing ring 1001 is located on the outside away from the ejection plate 203 and opens towards the bottom surface of the mounting cylinder 101.

[0119] Then, the device of the present invention, together with the lip seal 1001, is placed into the internal mounting cavity of the reversing valve 1002. The lip seal 1001 is aligned with the position in the internal mounting cavity where it is close to the installed parts. Then, the operator holds down the vertical rod 201 with one hand. After the large diameter end of the lip seal 1001 is in contact with other parts in the cavity, the operator lifts the horizontal rod 101 upward with the other hand to push the lip seal 1001 out of the mounting cylinder 103 to the installation position. This causes the lip seal 1001 that is in contact with the ejector plate 203 to leave the mounting cylinder 101. The large diameter of the lip seal is larger than the internal mounting cavity 10020 and is fixed by the force generated by the interference fit. Then, the ejector module 2 is in contact with the main module 1 under the reset force of the return spring 3. The entire tooling is then removed from the valve body (i.e., the reversing valve 1002), completing the installation of the lip seal 1001.

[0120] In specific implementation, the lip-type sealing ring installation device provided by the present invention is suitable for installing lip-type sealing rings in cavities. For example, it can be applied to the reversing valve in the electro-pneumatic switch machine produced by Tianjin Railway Signal Co., Ltd. or the three-position five-way reversing valve in the retarder. In this case, the function of the present invention is to quickly, safely and reliably assemble the lip-type sealing ring 1001 (e.g., E-ring) into the valve body of these two types of reversing valves.

[0121] Then, the staff holds the crossbar 101 of the main module 1 and moves the entire device of the present invention out of the internal installation cavity of the reversing valve to complete the installation operation of the lip-type sealing ring.

[0122] In summary, compared with the prior art, the lip seal installation device provided by this invention has a scientifically designed structure, which can effectively solve the problems of cumbersome operation and easy damage to the seal during the reverse installation of lip seals. It can conveniently, safely and reliably install lip seals in the reverse of the directional valve body, ensuring installation quality and improving installation efficiency, and has significant practical significance.

[0123] After testing, the installation device for lip-type sealing rings provided by this invention can meet the usage requirements of multiple different models of lip-type sealing rings during reverse installation. It can quickly, accurately, and correctly install the lip-type sealing rings into place, effectively protecting the sealing rings from scratches during the installation process. It effectively solves the problems of lip-type sealing rings requiring experience, being time-consuming, and easily damaging the sealing ring lip during installation, thus improving work efficiency and ensuring product quality.

[0124] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An installation device for a lip-type sealing ring, characterized in that, It includes a main body module (1), an ejection module (2), and a return spring (3); The main module (1) includes a crossbar (101), a first connecting rod (102), and a mounting cylinder (103). A first connecting rod (102) is vertically installed at the left and right ends of the top of the cylindrical, hollow mounting tube (103). The bottom of the mounting cylinder (103) is provided with a sealing ring mounting opening (1031). The tops of the two first connecting rods (102) are fixedly connected to the left and right ends of the crossbar (101); At the front and rear ends of the top of the mounting cylinder (103), there is a push-out module mounting hole (104) respectively. The ejection module (2) includes a longitudinal rod (201), a second connecting rod (202), and an ejection plate (203). A second connecting rod (202) passes vertically through each of the ejector module mounting holes (104). The tops of the two second connecting rods (202) are fixedly connected to the front and rear ends of the longitudinal rod (201); The bottom of the two second connecting rods (202) is fixedly connected to the top of a circular ejector plate (203); The ejection plate (203) is located directly below the two ejection module mounting holes (104); The vertical bar (201) of the launch module (2) is located directly below the horizontal bar (101) of the main module (1); The crossbar (101) of the main module (1) and the vertical bar (201) of the ejection module (2) are connected by a return spring (3); The sealing ring installation opening (1031) of the mounting cylinder (103) is used to insert a lip-type sealing ring (1001) that needs to be installed in the internal mounting cavity (10020) of the reversing valve (1002). The inner cavity of the mounting cylinder (103) is used to accommodate the lip-type sealing ring (1001). The mounting device for the lip seal is used to install the lip seal (1001) into the internal mounting cavity (10020) of the reversing valve (1002); The lip-type sealing ring (1001) includes both the lip side and the non-lip side; The lip side of the lip-type sealing ring (1001) is in interference fit contact with the mounting cylinder (103); The non-lip side of the lip-type sealing ring (1001) is in clearance fit contact with the mounting cylinder (103); When the lip seal (1001) is placed inside the mounting cylinder (103), the non-lip side of the lip seal (1001) is in contact with the ejection plate (203) of the ejection module (2); The top center of the mounting cylinder (103) has a central through hole (1032). The diameter of the central through hole (1032) is smaller than the outer diameter of the non-lip side of the lip-type sealing ring (1001).

2. The mounting device for a lip-type sealing ring as described in claim 1, characterized in that, Two ejector module mounting holes (104) and two first connecting rods (102) are symmetrically distributed in a cross shape at the mounting positions on the top of the mounting cylinder (103).

3. The mounting device for a lip-type sealing ring as described in claim 1, characterized in that, The upper and lower ends of the return spring (3) are respectively connected to the middle position of the horizontal bar (101) of the main module (1) and the middle position of the longitudinal bar (201) of the push-out module (2).

4. The mounting device for a lip-type sealing ring as described in claim 1, characterized in that, A first return spring fixing groove (105) is provided at the middle of the transverse direction of the crossbar (101). A second return spring fixing groove (204) is provided at the longitudinal middle position of the longitudinal rod (201). The return spring (3) has a hook at each of its upper and lower ends; Two hooks are respectively attached to the first return spring fixing groove (105) and the second return spring fixing groove (204).

5. The mounting device for a lip-type sealing ring as described in claim 1, characterized in that, For the main module (1), the two first connecting rods (102) are symmetrically distributed from left to right; For the ejection module (2), the two second connecting rods (202) are symmetrically distributed front and back.

6. The mounting device for a lip-type sealing ring as described in any one of claims 1 to 5, characterized in that, The outer diameter of the ejector plate (203) is smaller than the inner diameter of the mounting cylinder (103); The diameter of the second connecting rod (202) is smaller than the diameter of the ejector module mounting hole (104), and the two are clearance fit.

7. The mounting device for a lip-type sealing ring as described in any one of claims 1 to 5, characterized in that, The two first connecting rods (102) are parallel to each other, and the distance between them is less than the outer diameter of the mounting cylinder (103); The two second connecting rods (202) are parallel to each other, and the distance between them is less than the outer diameter of the mounting cylinder (103); The outer diameter of the mounting cylinder (103) is smaller than the inner diameter of the internal mounting cavity of the reversing valve (1002).

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