Integrated connecting structure

Abstract

The utility model provides an integrated connecting structure which comprises an end cover, a sealing seat and a valve body, the sealing seat is installed between the valve body and the end cover, one end of the sealing seat is provided with a connecting structure matched with the valve body, the other end of the sealing seat is provided with an installation groove, one end of the installation groove facing the structure is provided with a clamping groove, and a sealing ring is arranged in the installation groove. And a guide sleeve is arranged in the clamping groove. The sealing seat is additionally arranged between the valve body and the end cover, and the guide sleeve and the sealing ring are mounted in the sealing seat, so that only the sealing seat and corresponding working parts are arranged inside and outside the guide sleeve and the sealing ring, the requirements of sealing, transmission, limiting and the like are met, a layer-by-layer nested structure is avoided, the structure is more stable, matching is more stable, and assembling is more convenient.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic control, in particular to an integrated connection structure. Background Art

[0002] A Chinese patent (publication number: CN220581789U) discloses a high back pressure, high precision, variable line composite guide sleeve pair for digital hydraulic valves. In this patent, a structure in which multiple sleeves are nested with each other is adopted in the end cover to meet the requirements of sealing, transmission, and limiting.

[0003] However, the multiple nested structures require relatively precise coordination with each other, and are prone to loose coordination and assembly after installation. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides an integrated connection structure, including an end cover, a sealing seat and a valve body. The sealing seat is installed between the valve body and the end cover. One end of the sealing seat is provided with a connection structure that cooperates with the valve body. The other end of the sealing seat is provided with an installation groove. One end of the installation groove is provided with a clamping groove. A sealing ring is provided in the installation groove, and a guide sleeve is provided in the clamping groove.

[0005] Preferably, a first sealing groove is provided between the installation groove and the clamping groove, a first sealing ring is provided in the first sealing groove, a second sealing groove is provided on the inner wall of the sealing ring, and a second sealing ring is provided in the second sealing groove.

[0006] Preferably, a positioning block is provided at one end of the end cover facing the sealing seat, and a positioning groove is provided at one end of the sealing seat facing the end cover.

[0007] Preferably, it also includes a motor shaft, and an adjustment gap is set between the motor shaft and the guide sleeve.

[0008] Preferably, the width of the gap is adjusted to be 0.5 mm-1.5 mm.

[0009] Preferably, the sealing ring is made of PTFE material, and a convex ring is arranged at one end of the sealing ring facing the slot, and the first sealing ring is sleeved on the convex ring.

[0010] The beneficial effects of the utility model are as follows: a sealing seat is added between the valve body and the end cover, and the guide sleeve and the sealing ring are installed in the sealing seat. In this way, there are only the sealing seat and the corresponding working parts inside and outside the guide sleeve and the sealing ring. While meeting the requirements of sealing, transmission, limiting, etc., a nested structure is avoided, the structure is more stable, the fit is more stable, and the assembly is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the prior art;

[0012] Figure 2 It is a structural diagram of the utility model;

[0013] Figure 3 for Figure 2 A partial enlargement of the marked area. DETAILED DESCRIPTION

[0014] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0015] See also Figure 2-Figure 3 The utility model provides an integrated connection structure, including an end cover 1, a sealing seat 2 and a valve body 3. The sealing seat 2 is installed between the valve body 3 and the end cover 1. One end of the sealing seat 2 is provided with a connection structure that matches the valve body 3. The other end of the sealing seat 2 is provided with a mounting groove. One end of the mounting groove is provided with a clamping groove. A sealing ring 4 is provided in the mounting groove. A guide sleeve 5 is provided in the clamping groove.

[0016] A sealing seat 2 is added between the valve body 3 and the end cover 1, and the guide sleeve 5 and the sealing ring 4 are installed in the sealing seat 2. In this way, there are only the sealing seat 2 and the corresponding working parts inside and outside the guide sleeve 5 and the sealing ring 4. While meeting the requirements of sealing, transmission, and limiting, the nested structure is avoided, the structure is more stable, the fit is more stable, and the assembly is more convenient.

[0017] Furthermore, a first sealing groove is provided between the installation groove and the clamping groove, a first sealing ring 6 is provided in the first sealing groove, a second sealing groove 7 is provided on the inner wall of the sealing ring 4, and a second sealing ring 8 is provided in the second sealing groove 7.

[0018] By providing two sealing rings, the sealing performance is improved and leakage of the medium in the valve body 3 is avoided.

[0019] Furthermore, a positioning block 9 is provided at one end of the end cover 1 facing the sealing seat 2 , and a positioning groove is provided at one end of the sealing seat 2 facing the end cover 1 .

[0020] Through the cooperation of the positioning block 9 and the positioning groove, during assembly, the sealing seat 2 and the end cover 1 are first positioned to facilitate installation; after the assembly is completed, the stability of the connection is improved.

[0021] Furthermore, it also includes a motor shaft 10 , and an adjustment gap 11 is provided between the motor shaft 10 and the guide sleeve 5 .

[0022] By adjusting the setting of the gap 11, when the motor shaft 10 and the lead screw are deflected or stuck, the gap 11 is adjusted to provide a deflected space for the motor shaft 10, so that the motor shaft 10 has space to automatically adjust its position through its own torque, thereby restoring normal operation without getting stuck.

[0023] Furthermore, the width of the gap 11 is adjusted to 0.5 mm-1.5 mm, so as to ensure sufficient space while avoiding excessive occupation of the space inside the sealing seat 2, control the volume of the sealing seat 2, and make the overall structure more compact.

[0024] Furthermore, the sealing ring 4 is made of PTFE material, and a convex ring 12 is provided at one end of the sealing ring 4 facing the slot, and the first sealing ring 6 is sleeved on the convex ring 12 .

[0025] After installation, the first sealing ring 6 presses the convex ring 12 so that the convex ring 12 is tightly pressed onto the motor shaft 10, thereby sealing the sealing ring 4 and the motor shaft 10 and the sealing ring 4 and the sealing seat 2. While sealing, the ptfe material has little interference with the normal operation of the motor shaft 10, and the ptfe material is hard and has good pressure bearing capacity. After the first sealing ring 6 is put on the convex ring 12, the sealing ring 4 can bear the axial pressure, thereby avoiding excessive instantaneous pressure and causing leakage. The above is only a preferred embodiment of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. An integrated connection structure, characterized in that: The valve body (3) comprises an end cover (1), a sealing seat (2) and a valve body (3), wherein the sealing seat (2) is installed between the valve body (3) and the end cover (1), one end of the sealing seat (2) is provided with a connection structure that cooperates with the valve body (3), the other end of the sealing seat (2) is provided with a mounting groove, one end of the mounting groove is provided with a clamping groove, a sealing ring (4) is provided in the mounting groove, and a guide sleeve (5) is provided in the clamping groove.

2. An integrated connection structure according to claim 1, characterized in that: A first sealing groove is provided between the installation groove and the clamping groove, a first sealing ring (6) is provided in the first sealing groove, a second sealing groove (7) is provided on the inner wall of the sealing ring (4), and a second sealing ring (8) is provided in the second sealing groove (7).

3. An integrated connection structure according to claim 1, characterized in that: A positioning block (9) is provided at one end of the end cover (1) facing the sealing seat (2), and a positioning groove is provided at one end of the sealing seat (2) facing the end cover (1).

4. The integrated connection structure according to claim 1, characterized in that: It also comprises a motor shaft (10), and an adjustment gap (11) is provided between the motor shaft (10) and the guide sleeve (5).

5. An integrated connection structure according to claim 4, characterized in that: The width of the adjustment gap (11) is 0.5 mm-1.5 mm.

6. The integrated connection structure according to claim 2, characterized in that: The sealing ring (4) is made of PTFE material, and a convex ring (12) is provided at one end of the sealing ring (4) facing the slot, and the first sealing ring (6) is sleeved on the convex ring (12).

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