A load-sensitive multi-way valve waterproof bin

Abstract

The present invention belongs to the technical field of load-sensitive multi-way valves, and particularly relates to a waterproof chamber for a load-sensitive multi-way valve. The present invention includes a waterproof chamber body, and a multi-way valve chamber body is arranged in the waterproof chamber body. During the use of the present invention, the load-sensitive multi-way valve is installed in the multi-way valve chamber body. The multi-way valve chamber body is connected to the waterproof chamber body through a rotating member. The waterproof chamber cover is connected to the waterproof chamber body through a shaft diameter double-sealing structure. Through the shaft diameter double-sealing structure, two seals in the axial and radial directions can be achieved to prevent water from entering the chamber body. Moreover, when the oil pipe extends out of the waterproof chamber body through the oil pipe transition seal, it plays a sealing role to prevent water from entering the waterproof chamber body. It not only satisfies the communication between the inside and the outside but also plays a waterproof role. The overall structure overcomes the non-waterproof characteristic of the original design, greatly reduces the limitations of the hydraulic mechanism, and at the same time can not only achieve the purpose of waterproofing but also play a role in dust prevention, etc., greatly increasing the service life of the multi-way valve.

Description

Technical Field

[0001] The present invention belongs to the technical field of load-sensitive multi-way valves and relates to a waterproof chamber for a load-sensitive multi-way valve. Background Art

[0002] The load-sensitive multi-way valve is an indispensable component of a hydraulic mechanism. Since it is an electromagnetic component, it does not have waterproof characteristics. When a hydraulic mechanism is equipped with a load-sensitive multi-way valve, it is necessary to consider placing it in a dry environment. The load-sensitive multi-way valve is a hydraulic component that controls oil with electricity. The pressure regulation of the multi-way valve generally uses the mechanism of mutual feedback between electromagnetism and springs. Its basic principle is to control the size of the spool through an electrical signal, thereby controlling the size of the hydraulic flow rate to achieve the movement of the working component. This results in its non-waterproof property, but it is also indispensable in the hydraulic mechanism. This leads to the situation that when the hydraulic mechanism performs wading operations, the multi-way valve must be placed above the liquid level, greatly reducing its waterproof level. Therefore, it is very necessary to design a waterproof chamber for a load-sensitive multi-way valve that not only satisfies communication inside and outside but also plays a waterproof role, reduces the limitations of the hydraulic mechanism, and has good sealing performance.

[0003] In order to overcome the deficiencies of the prior art, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses a load-sensitive multi-way valve [Application No.: 201810112496.X], which includes: a valve body, a spool, a compensation valve, two one-way valves, and an LS feedback oil circuit. A chamber, a first flow path, and a second flow path are defined in the valve body. The valve body is also provided with a first oil inlet, a second oil inlet, a first control oil port, and a second control oil port. The spool is movably arranged in the chamber. The compensation valve is arranged in the valve body and is movable to control the communication between the chamber and the first flow path or the second flow path. The two one-way valves are respectively connected to the compensation valve. One end of the LS feedback oil circuit is connected to the compensation valve to feedback the oil pressure of the compensation valve, and the other end of the LS feedback oil circuit is connected to an external variable pump and distributes the oil flow according to the magnitude of the feedback oil pressure for the operation of the actuator. Summary of the Invention

[0004] The purpose of the present invention is to address the above problems and provide a waterproof chamber for a load-sensitive multi-way valve.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A waterproof chamber for a load-sensitive multi-way valve includes a waterproof chamber body. A multi-way valve chamber body is provided inside the waterproof chamber body. A load-sensitive multi-way valve is provided inside the multi-way valve chamber body. The multi-way valve chamber body is connected to the waterproof chamber body through a rotating member. A waterproof chamber cover is provided on the waterproof chamber body. The waterproof chamber cover is connected to the waterproof chamber body through a shaft diameter double-sealing structure. An oil pipe transition seal is provided inside the waterproof chamber cover, and the position of the oil pipe transition seal corresponds to that of the load-sensitive multi-way valve.

[0007] In the above-mentioned waterproof chamber of a load-sensitive multi-way valve, the double shaft diameter sealing structure includes a chamber body sealing thread provided on the waterproof chamber body, a chamber cover sealing thread provided in the waterproof chamber cover, the chamber body sealing thread and the chamber cover sealing thread are screwed and matched with each other, a flared axial seal is provided on the waterproof chamber body, and the chamber body sealing thread and the chamber cover sealing thread respectively correspond to the position of the flared axial seal.

[0008] In the above-mentioned waterproof chamber of a load-sensitive multi-way valve, the flared axial seal includes a flared seal groove provided on the waterproof chamber body, a flared gasket is provided at the flared seal groove, and the flared gasket is located below the chamber body sealing thread.

[0009] In the above-mentioned waterproof chamber of a load-sensitive multi-way valve, an O-ring seal groove is provided on the waterproof chamber body, an O-ring is provided in the O-ring seal groove, and the chamber body sealing thread is located between the flared gasket and the O-ring.

[0010] In the above-mentioned waterproof chamber of a load-sensitive multi-way valve, a plurality of tightening handles symmetrically arranged along the center line of the waterproof chamber cover are provided on the waterproof chamber cover, and the tightening handles are integrally formed with the waterproof chamber cover.

[0011] In the above-mentioned waterproof chamber of a load-sensitive multi-way valve, the rotating member includes a bearing seat provided in the waterproof chamber body, a bearing is provided in the bearing seat, a rotating shaft is provided at the bottom of the multi-way valve chamber body, and the rotating shaft is in interference fit with the bearing.

[0012] In the above-mentioned waterproof chamber of a load-sensitive multi-way valve, a support partition is provided in the multi-way valve chamber body, the support partition is located at the bottom of the load-sensitive multi-way valve, and a plurality of compression springs are provided between the support partition and the multi-way valve chamber body. One end of the compression spring is connected to the support partition, and the other end is connected to the load-sensitive multi-way valve.

[0013] In the above-mentioned waterproof chamber of a load-sensitive multi-way valve, an oil pipe extension hole is provided in the waterproof chamber cover, and the oil pipe transition seal includes an oil pipe transition upper sleeve and an oil pipe transition lower sleeve provided at the oil pipe extension hole, and the oil pipe transition upper sleeve and the oil pipe transition lower sleeve are respectively provided with threads that are screwed with each other.

[0014] In the above-mentioned waterproof chamber of a load-sensitive multi-way valve, a conical pressing structure is provided at the top of the oil pipe transition upper sleeve, and a flat gasket is provided between the oil pipe transition upper sleeve and the waterproof chamber cover.

[0015] In the above-mentioned waterproof chamber of the load-sensitive multi-way valve, a pressing and reducing diameter structure is provided at the top of the lower sleeve of the oil pipe transition, and a flat gasket is provided between the lower sleeve of the oil pipe transition and the waterproof chamber cover.

[0016] Compared with the existing technology, the advantages of the present invention are as follows:

[0017] 1. During the use of the present invention, the load-sensitive multi-way valve is installed in the multi-way valve chamber body. The multi-way valve chamber body is connected to the waterproof chamber body through a rotating member, and the waterproof chamber cover is connected to the waterproof chamber body through an axial and radial double-sealing structure. The axial and radial double-sealing can be realized through the axial and radial double-sealing structure to prevent water from entering the chamber body. And through the oil pipe transition seal, it plays a sealing role when the oil pipe extends out of the waterproof chamber body, preventing water from entering the waterproof chamber body. It not only satisfies the communication between the inside and the outside, but also plays a waterproof role. The overall structure overcomes the non-waterproof characteristic of the original design, greatly reduces the limitations of the hydraulic mechanism, and at the same time can not only achieve the purpose of waterproofing, but also play a role in dust prevention, etc., greatly increasing the service life of the multi-way valve.

[0018] 2. The present invention is provided with an oil pipe extension hole to facilitate the extension of the oil pipe. The extended oil pipe is sleeved and fixed through the upper sleeve of the oil pipe transition and the lower sleeve of the oil pipe transition, which plays a sealing role in the extended part of the oil pipe to prevent water from entering the waterproof chamber body. The upper sleeve of the oil pipe transition and the lower sleeve of the oil pipe transition are respectively provided with mutually screwed threads, adopting a threaded tightening structure, with a good sealing effect and being convenient for disassembly and assembly.

[0019] 3. The present invention is provided with a conical pressing structure at the top of the upper sleeve of the oil pipe transition. The inner diameter of the conical pressing structure gradually decreases from bottom to top. The oil pipe extending into the upper sleeve of the oil pipe transition is tightly pressed and fixed through the conical pressing structure to ensure the sealing performance. The flat gasket can fill the gap between the upper sleeve of the oil pipe transition and the waterproof chamber cover. The inner diameter of the pressing and reducing diameter structure gradually decreases from bottom to top. The oil pipe extending into the upper sleeve of the oil pipe transition is tightly pressed and fixed through the pressing and reducing diameter structure to ensure the sealing performance. The flat gasket can fill the gap between the lower sleeve of the oil pipe transition and the waterproof chamber cover, forming a good sealing effect. An oil pipe gasket is also provided between the upper sleeve of the oil pipe transition and the oil pipe to further ensure the sealing effect. The oil pipe and the load-sensitive multi-way valve are fixedly connected through a screwed adapter, which not only satisfies the communication between the inside and the outside, but also plays a waterproof role.

[0020] Other advantages, objectives and features of the present invention will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present invention.

[0022] Figure 2 It is a schematic structural diagram of a waterproof bin body.

[0023] Figure 3 It is a schematic structural diagram of the waterproof bin body in another direction.

[0024] Figure 4 It is a schematic structural diagram of a waterproof bin cover.

[0025] Figure 5 It is a schematic structural diagram of a multi-way valve bin body.

[0026] Figure 6 It is a partial explosion schematic diagram of the present invention.

[0027] Figure 7 It is a schematic structural diagram of a tubing transition seal.

[0028] Figure 8 It is a schematic structural diagram of an upper sleeve for tubing transition.

[0029] Figure 9 It is a schematic structural diagram of a lower sleeve for tubing transition.

[0030] In the figure: waterproof bin body 1, multi-way valve bin body 2, load-sensing multi-way valve 3, rotating part 4, waterproof bin cover 5, shaft diameter double-sealing structure 6, tubing transition seal 7, bin body sealing thread 8, bin cover sealing thread 9, bellmouth axial seal 10, bellmouth seal groove 11, bellmouth gasket 12, O-ring seal groove 13, O-ring seal 14, tightening handle 15, bearing seat 16, bearing 17, rotating shaft 18, supporting partition 19, compression spring 20, tubing outlet hole 21, upper sleeve for tubing transition 22, lower sleeve for tubing transition 23, conical compression structure 24, compression variable-diameter structure 25. Detailed implementation mode

[0031] The present invention will be further described below with reference to the accompanying drawings.

[0032] As Figures 1-9 shown, a load-sensing multi-way valve waterproof bin includes a waterproof bin body 1. A multi-way valve bin body 2 is arranged inside the waterproof bin body 1. A load-sensing multi-way valve 3 is arranged inside the multi-way valve bin body 2. The multi-way valve bin body 2 is connected to the waterproof bin body 1 through a rotating part 4. A waterproof bin cover 5 is arranged on the waterproof bin body 1. The waterproof bin cover 5 is connected to the waterproof bin body 1 through a shaft diameter double-sealing structure 6. A tubing transition seal 7 is arranged inside the waterproof bin cover 5. The position of the tubing transition seal 7 corresponds to that of the load-sensing multi-way valve 3.

[0033] In this embodiment, during use, the load-sensitive multi-way valve 3 is installed in the multi-way valve chamber 2. The multi-way valve chamber 2 is connected to the waterproof chamber 1 through a rotating member 4. The waterproof chamber cover 5 is connected to the waterproof chamber 1 through a shaft diameter double-sealing structure 6. Through the shaft diameter double-sealing structure 6, two seals in the axial and radial directions can be achieved to prevent water from entering the chamber. And through the oil pipe transition seal 7, when the oil pipe extends out of the waterproof chamber 1, it plays a sealing role to prevent water from entering the waterproof chamber 1. It not only satisfies the communication between the inside and the outside but also plays a waterproof role. The overall structure overcomes the non-waterproof characteristic of the original design, greatly reduces the limitations of the hydraulic mechanism. At the same time, it can not only achieve the purpose of waterproofing but also play a role in dust prevention, etc., greatly increasing the service life of the multi-way valve.

[0034] Compared with the previous design of mounting the multi-way valve high above the liquid level, the design of the waterproof chamber can improve the coordination of the hydraulic mechanism. The oil pipe transition design is not only limited to the waterproof transition of the oil pipe, but any similar cylindrical component's transition waterproofing can be applied, such as cables, water pipes, etc., enabling the waterproof level of the hydraulic mechanism to reach IP68 and achieving the waterproofing of the whole machine.

[0035] Combined with Figures 1-9 As shown, the shaft diameter double-sealing structure 6 includes a chamber sealing thread 8 provided on the waterproof chamber 1. The waterproof chamber cover 5 is provided with a cover sealing thread 9. The chamber sealing thread 8 is in threaded engagement with the cover sealing thread 9. The waterproof chamber 1 is provided with a flared axial seal 10. The chamber sealing thread 8 and the cover sealing thread 9 correspond to the position of the flared axial seal 10 respectively.

[0036] Specifically, during installation, between the waterproof chamber cover 5 and the waterproof chamber 1, through the threaded engagement between the chamber sealing thread 8 and the cover sealing thread 9 and the flared axial seal 10, a threaded tightening design and axial and radial seals are achieved to prevent water from entering the chamber.

[0037] Combined with Figures 1-3 As shown, the flared axial seal 10 includes a flared seal groove 11 provided on the waterproof chamber 1. A flared seal gasket 12 is provided at the flared seal groove 11. The flared seal gasket 12 is located below the chamber sealing thread 8.

[0038] In this embodiment, the flared seal groove 11 is used to install and fix the flared seal gasket 12. Through the cooperation between the flared seal gasket 12, the chamber sealing thread 8 and the cover sealing thread 9, axial and radial double seals are formed, and the sealing effect is better.

[0039] The waterproof chamber 1 is provided with an O-ring seal groove 13. An O-ring 14 is provided in the O-ring seal groove 13. The chamber sealing thread 8 is located between the flared seal gasket 12 and the O-ring 14.

[0040] In this embodiment, the bell mouth gasket 12 is used to install and fix the O-ring 14. During the process of screwing the waterproof cover 5 and the waterproof housing 1 tightly, the O-ring 14 can achieve double sealing in the axial and radial directions at the abutting position between the waterproof cover 5 and the waterproof housing 1, and the sealing effect is better.

[0041] Combined Figure 4 As shown, a plurality of tightening handles 15 symmetrically arranged along the center line of the waterproof cover 5 are provided on the waterproof cover 5, and the tightening handles 15 are integrally formed with the waterproof cover 5.

[0042] In this embodiment, the tightening handle 15 facilitates the staff to position and fix the waterproof cover 5 or to rotate the waterproof cover 5 conveniently, and the operation is simple and convenient.

[0043] The rotating member 4 includes a bearing seat 16 arranged in the waterproof housing 1, a bearing 17 is arranged in the bearing seat 16, a rotating shaft 18 is arranged at the bottom of the multi-way valve housing 2, and the rotating shaft 18 is in interference fit with the bearing 17.

[0044] In this embodiment, the bearing seat 16 is used to install and fix the bearing 17. When the waterproof cover 5 and the waterproof housing 1 are screwed tightly, the rotating shaft 18 is in interference fit with the bearing 17. When the waterproof housing 1 is screwed tightly, the multi-way valve housing 2 will also rotate together until the waterproof housing 1 and the waterproof cover 5 are screwed tightly.

[0045] A support partition 19 is arranged in the multi-way valve housing 2. The support partition 19 is located at the bottom of the load-sensitive multi-way valve 3. A plurality of compression springs 20 are arranged between the support partition 19 and the multi-way valve housing 2. One end of the compression spring 20 is connected to the support partition 19, and the other end is connected to the load-sensitive multi-way valve 3.

[0046] In this embodiment, the support partition 19 and the compression springs 20 are used to abut and fix the bottom of the load-sensitive multi-way valve 3. When the multi-way valve housing 2 is screwed downwards, the compression springs 20 play a role in fixing the load-sensitive multi-way valve 3, preventing oil leakage due to the impact and vibration of high-pressure oil during the working process. The structure is stable. The compression springs 20 can not only fix the load-sensitive multi-way valve 3 but also absorb the errors during processing and installation.

[0047] Combined Figure 1 and Figures 7-9 As shown, an oil pipe extension hole 21 is arranged in the waterproof cover 5. The oil pipe transition seal 7 includes an oil pipe transition upper sleeve 22 and an oil pipe transition lower sleeve 23 arranged at the oil pipe extension hole 21. The oil pipe transition upper sleeve 22 and the oil pipe transition lower sleeve 23 are respectively provided with threads that are screwed together.

[0048] In this embodiment, the oil pipe extension hole 21 is used to facilitate the extension of the oil pipe. The extended oil pipe is sleeved and fixed through the upper oil pipe transition sleeve 22 and the lower oil pipe transition sleeve 23, which plays a sealing role for the extended part of the oil pipe to prevent water from entering the waterproof bin body 1. The upper oil pipe transition sleeve 22 and the lower oil pipe transition sleeve 23 are respectively provided with threads that are screwed together. The threaded tightening structure is adopted, and the sealing effect is better, and it is also convenient for disassembly and assembly.

[0049] Combined with Figure 7 、 Figure 8 As shown, a conical pressing structure 24 is provided at the top of the upper oil pipe transition sleeve 22, and a flat gasket is provided between the upper oil pipe transition sleeve 22 and the waterproof bin cover 5.

[0050] In this embodiment, a conical pressing structure 24 is provided at the top of the upper oil pipe transition sleeve 22. The inner diameter of the conical pressing structure 24 gradually decreases from bottom to top. The oil pipe extending into the upper oil pipe transition sleeve 22 is tightly pressed and fixed through the conical pressing structure 24 to ensure the sealing performance. The flat gasket can fill the gap between the upper oil pipe transition sleeve 22 and the waterproof bin cover 5 to form a better sealing effect.

[0051] Combined with Figure 9 As shown, a pressing diameter-changing structure 25 is provided at the top of the lower oil pipe transition sleeve 23, and a flat gasket is provided between the lower oil pipe transition sleeve 23 and the waterproof bin cover 5.

[0052] In this embodiment, the inner diameter of the pressing diameter-changing structure 25 gradually decreases from bottom to top. The oil pipe extending into the upper oil pipe transition sleeve 22 is tightly pressed and fixed through the pressing diameter-changing structure 25 to ensure the sealing performance. The flat gasket can fill the gap between the lower oil pipe transition sleeve 23 and the waterproof bin cover 5 to form a better sealing effect. An oil pipe gasket is also provided between the upper oil pipe transition sleeve 22 and the oil pipe to further ensure the sealing effect. The oil pipe is fixedly connected to the load-sensitive multi-way valve 3 through a screwed adapter.

[0053] The working principle of the present invention is:

[0054] During use, the load-sensitive multi-way valve 3 is installed in the multi-way valve bin body 2. The support partition 19 and the compression spring 20 are used to abut and fix the bottom of the load-sensitive multi-way valve 3. When the multi-way valve bin body 2 is tightened downward, the compression spring 20 plays a role in fixing the load-sensitive multi-way valve 3 to prevent oil leakage due to the impact and vibration of high-pressure oil during operation. The structure is stable. The compression spring 20 can not only fix the load-sensitive multi-way valve 3 but also absorb the errors during processing and installation.

[0055] During the installation process, the bell-mouth sealing groove 11 is used to install and fix the bell-mouth sealing gasket 12. Through the cooperation between the bell-mouth sealing gasket 12 and the tank body sealing thread 8 and the tank cover sealing thread 9, an axial radial double seal is formed to prevent water from entering the tank body, and the sealing effect is good. The bell-mouth sealing gasket 12 is used to install and fix the O-ring 14. During the tightening process of the waterproof tank cover 5 and the waterproof tank body 1, the O-ring 14 can play an axial radial double seal on the abutment between the waterproof tank cover 5 and the waterproof tank body 1. This design will make the sealing gasket more evenly stressed and the sealing effect is better.

[0056] Tightening the handle 15 makes it easy for the staff to position and fix the waterproof compartment cover 5 or to rotate the waterproof compartment cover 5, which is simple and convenient to operate.

[0057] The bearing seat 16 is used to install the fixed bearing 17. When the waterproof bin cover 5 and the waterproof bin body 1 are tightened, the rotating shaft 18 and the bearing 17 are interference fit. When the waterproof bin body 1 is tightened, the multi-way valve bin body 2 will also rotate together until the waterproof bin body 1 and the waterproof bin cover 5 are tightened.

[0058] The oil pipe extension hole 21 is used to facilitate the extension of the oil pipe. The extended oil pipe is fixed by the oil pipe transition upper sleeve 22 and the oil pipe transition lower sleeve 23, which plays a sealing role on the extended oil pipe part and prevents water from entering the waterproof warehouse body 1. The oil pipe transition upper sleeve 22 and the oil pipe transition lower sleeve 23 are respectively provided with mutually screwed threads, and a thread tightening structure is adopted, which has a good sealing effect and is easy to disassemble and assemble.

[0059] A conical pressing structure 24 is provided on the top of the oil pipe transition upper sleeve 22. The inner diameter of the conical pressing structure 24 gradually decreases from bottom to top. The oil pipe inserted into the oil pipe transition upper sleeve 22 is tightly pressed and fixed by the conical pressing structure 24 to ensure sealing. The flat sealing gasket can fill the gap between the oil pipe transition upper sleeve 22 and the waterproof compartment cover 5 to form a better sealing effect.

[0060] The inner diameter of the compression variable-diameter structure 25 gradually decreases from bottom to top. The oil pipe inserted into the oil pipe transition upper sleeve 22 is tightly pressed and fixed by the compression variable-diameter structure 25 to ensure sealing. The flat sealing gasket can fill the gap between the oil pipe transition lower sleeve 23 and the waterproof compartment cover 5 to form a better sealing effect. An oil pipe sealing gasket is also provided between the oil pipe transition upper sleeve 22 and the oil pipe to further ensure the sealing effect. The oil pipe and the load-sensitive multi-way valve 3 are fixedly connected by a thread adapter, which not only meets the communication between the inside and the outside, but also plays a waterproof role. The overall structure overcomes the non-waterproof characteristics of the original design, greatly reduces the limitations of the hydraulic mechanism, and at the same time can not only play the role of waterproofing, but also play a role of dustproofing, greatly increasing the service life of the multi-way valve.

[0061] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains may make various modifications or supplements to the described specific embodiments or use similar means for substitution, but they will not deviate from the spirit of the present invention.

[0062] Although terms such as waterproof housing 1, multi-way valve housing 2, load-sensitive multi-way valve 3, rotating member 4, waterproof housing cover 5, shaft diameter double-sealing structure 6, oil pipe transition seal 7, housing seal thread 8, cover seal thread 9, flared axial seal 10, flared seal groove 11, flared gasket 12, O-ring seal groove 13, O-ring 14, tightening handle 15, bearing seat 16, bearing 17, rotating shaft 18, support partition 19, compression spring 20, oil pipe extension hole 21, oil pipe transition upper sleeve 22, oil pipe transition lower sleeve 23, conical compression structure 24, compression variable diameter structure 25 are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is only to more conveniently describe and explain the essence of the present invention, and interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A load-sensitive multi-way valve waterproof chamber, comprising a waterproof chamber body (1), characterized in that, A multi-way valve chamber (2) is provided inside the waterproof chamber body (1). A load-sensitive multi-way valve (3) is provided inside the multi-way valve chamber (2). The multi-way valve chamber (2) is connected to the waterproof chamber body (1) through a rotating member (4). A waterproof chamber cover (5) is provided on the waterproof chamber body (1). The waterproof chamber cover (5) is connected to the waterproof chamber body (1) through a shaft diameter double-sealing structure (6). An oil pipe transition seal (7) is provided inside the waterproof chamber cover (5). The position of the oil pipe transition seal (7) corresponds to that of the load-sensitive multi-way valve (3). The shaft diameter double-sealing structure (6) includes a chamber body sealing thread (8) provided on the waterproof chamber body (1). A chamber cover sealing thread (9) is provided inside the waterproof chamber cover (5). The chamber body sealing thread (8) is in threaded engagement with the chamber cover sealing thread (9). A flared mouth axial seal (10) is provided on the waterproof chamber body (1). The positions of the chamber body sealing thread (8) and the chamber cover sealing thread (9) respectively correspond to that of the flared mouth axial seal (10). A support partition (19) is provided inside the multi-way valve chamber (2). The support partition (19) is located at the bottom of the load-sensitive multi-way valve (3). A number of compression springs (20) are provided between the support partition (19) and the multi-way valve chamber (2). One end of the compression spring (20) is connected to the support partition (19), and the other end is connected to the load-sensitive multi-way valve (3).

2. The load-sensitive multi-way valve waterproof chamber according to claim 1, wherein The flared mouth axial seal (10) includes a flared mouth seal groove (11) provided on the waterproof chamber body (1). A flared mouth gasket (12) is provided at the flared mouth seal groove (11). The flared mouth gasket (12) is located below the chamber body sealing thread (8).

3. A load-sensitive multi-way valve waterproof chamber according to claim 2, characterized in that, An O-ring seal groove (13) is provided on the waterproof chamber body (1). An O-ring seal (14) is provided inside the O-ring seal groove (13). The chamber body sealing thread (8) is located between the flared mouth gasket (12) and the O-ring seal (14).

4. A load-sensitive multi-way valve waterproof chamber according to claim 1, characterized in that A number of tightening handles (15) symmetrically arranged along the center line of the waterproof chamber cover (5) are provided on the waterproof chamber cover (5). The tightening handles (15) are integrally formed with the waterproof chamber cover (5).

5. A load-sensitive multi-way valve waterproof chamber according to claim 1, characterized in that, The rotating member (4) includes a bearing seat (16) provided inside the waterproof chamber body (1). A bearing (17) is provided inside the bearing seat (16). A rotating shaft (18) is provided at the bottom of the multi-way valve chamber (2). The rotating shaft (18) is in interference fit with the bearing (17).

6. A load-sensitive multi-way valve waterproof chamber according to claim 1, characterized in that, An oil pipe extension hole (21) is provided inside the waterproof chamber cover (5). The oil pipe transition seal (7) includes an oil pipe transition upper sleeve (22) and an oil pipe transition lower sleeve (23) provided at the oil pipe extension hole (21). The oil pipe transition upper sleeve (22) and the oil pipe transition lower sleeve (23) are respectively provided with threads that are screwed together.

7. A load-sensitive multi-way valve waterproof chamber according to claim 6, characterized in that, A conical pressing structure (24) is provided at the top of the oil pipe transition upper sleeve (22). A flat gasket is provided between the oil pipe transition upper sleeve (22) and the waterproof chamber cover (5).

8. A load-sensitive multi-way valve waterproof chamber according to claim 7, characterized in that, The top of the described lower sleeve (23) of the tubing transition is provided with a pressing and reducing structure (25), and a flat gasket is provided between the waterproof cover (5) of the lower sleeve (23) of the tubing transition.

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