Reversing valve driving structure and reversing valve

Abstract

The utility model discloses a reversing valve driving structure and a reversing valve, which belong to the technical field of fluid devices and comprise a motor, a motor mounting plate, a driving gear and a driven gear, the back side of the motor mounting plate is provided with a motor mounting position, and the front side is provided with a gear mounting cavity and a fixing position; the motor is fixedly arranged on the back side of the motor mounting plate, and the driving end of the motor penetrates through the motor mounting plate and extends out of the gear mounting cavity; the driving gear is positioned in the gear mounting cavity and sleeves the driving end of the motor; a gear shaft fixedly connected with the driven gear is arranged at the center of the driven gear, and the gear shaft is connected into the gear mounting cavity through an oil bearing; and the driving gear and the driven gear are meshed in the gear mounting cavity. The high-temperature liquid conveying pipe has a good effect on conveying high-temperature liquid in a limited space.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid devices, in particular to a driving structure of a reversing valve and a reversing valve. Background Art

[0002] A reversing valve can realize the reversing and distribution of fluids, and is mainly applied to the distribution of fluids, and is widely used in industries such as food and chemical industry. When transporting high-temperature liquids, the high-temperature liquid will cause overheating of the valve core of this reversing valve. Due to thermal expansion and contraction, when the valve core expands (or due to the swelling phenomenon of the valve core), the rotational resistance of the valve core will become very large. In this case, people generally use a motor with a larger power to drive, but the floor area of a high-power motor is relatively large; in a limited space, the driving of multiple valves is also extremely limited. Summary of the Utility Model

[0003] I) Technical Problems to be Solved

[0004] Based on the above technical problems, the utility model provides a driving structure of a reversing valve and a reversing valve, which can have a good effect on transporting high-temperature liquids in a limited space.

[0005] (II) Technical Solutions

[0006] The utility model provides a driving structure of a reversing valve, which includes a motor, a motor mounting plate, a driving gear and a driven gear;

[0007] A motor mounting position is arranged on the back side of the motor mounting plate, and a gear mounting cavity and a fixing position are arranged on the front side; the motor is fixed on the back side of the motor mounting plate, and its driving end passes through the motor mounting plate and extends out from the gear mounting cavity; the driving gear is located in the gear mounting cavity and is sleeved on the driving end of the motor; a gear shaft fixedly connected thereto is arranged at the center of the driven gear, and the gear shaft is connected in the gear mounting cavity through an oil-impregnated bearing; the driving gear and the driven gear are meshed in the gear mounting cavity.

[0008] Furthermore, it further includes a reversing valve; the action end of the reversing valve is connected to the gear shaft of the driven gear; the reversing valve includes a valve body, a valve core, a thrust ball bearing and a locking cap;

[0009] The locking cap seals the opening of the valve body; the valve core is located in the valve body and is matched with the valve body through a thrust ball bearing; a corrugated spring is further arranged between the thrust ball bearing and the locking cap.

[0010] Furthermore, the central axes of the corrugated spring, the valve body, the valve core, the thrust ball bearing and the locking cap coincide.

[0011] Furthermore, the oil-impregnated bearing is in interference fit with the motor mounting plate.

[0012] Further, both the back side and the front side of the motor mounting plate are stepped surfaces; the side of the gear mounting cavity close to the driving gear is an arc surface.

[0013] Further, the end of the gear shaft extends through the plane where the fixed position is located.

[0014] A reversing valve includes a valve body, a valve core, a thrust ball bearing and a locking cap;

[0015] The locking cap covers the opening of the valve body; the valve core is located in the valve body and is matched with the valve body through a thrust ball bearing; a corrugated spring is further arranged between the thrust ball bearing and the locking cap.

[0016] (III) Beneficial effects

[0017] It can be seen from the above technical solutions that the present utility model has at least one or a part of the following beneficial effects:

[0018] (1) Through the integration of the driving structure and the design of the motor mounting plate, a motor drives a gear set to output multiple torques to drive the valve core, realizing the rotation of the high-power valve core in a limited space.

[0019] (2) By arranging a corrugated spring in the reversing valve, not only can the rotational resistance after the expansion of the valve core be reduced, but also the gap between the valve core and the valve body caused by the wear of the valve core can be compensated, improving the sealing performance. Description of the drawings

[0020] To further illustrate the technical content of the present utility model, the following further describes the content of the present utility model in detail in conjunction with embodiments and drawings, where:

[0021] Figure 1 is an exploded view of the driving structure of the embodiment of the present utility model;

[0022] Figure 2 is an internal schematic diagram of the installation structure of the driving structure of the embodiment of the present utility model;

[0023] Figure 3 is an exploded view of the reversing valve structure of the embodiment of the present utility model;

[0024] Figure 4 is a schematic diagram of the structure of the reversing valve of the embodiment of the present utility model.

[0025] In the figure: 1. Gear shaft, 2. Oil-impregnated bearing, 3. Motor mounting plate, 4. Motor, 5. Driven gear, 6. Driving gear, 7. Valve body, 8. Valve core, 9. Thrust ball bearing, 10. Corrugated spring, 11. Locking cap. Specific embodiments

[0026] Next, the present utility model will be further described in conjunction with the accompanying drawings.

[0027] Referring to Figures 1 to 4 , this embodiment includes a motor 1, a motor mounting plate 2, a driven gear shaft 3, an oil-impregnated bearing 4, a driving gear 5, a driven gear 6, and a reversing valve.

[0028] Among them, the motor and the motor mounting plate are installed together by screws;

[0029] The oil-impregnated bearing is installed on the motor mounting plate, and the oil-impregnated bearing is press-fitted;

[0030] The driving gear is installed on the output shaft of the motor;

[0031] The driven gear is installed on the driven gear shaft of the motor;

[0032] The driving gear shaft is installed on the oil-impregnated bearing;

[0033] The rotation of the motor drives the driving gear to rotate, the rotation of the driving gear drives the driven gear to rotate, and the driven gear drives the driven gear shaft to rotate, thereby driving the reversing valve to rotate, realizing that one motor drives two reversing valves to rotate, reducing the size.

[0034] Structure of the reversing valve:

[0035] The thrust ball bearing and the valve core are installed in contact with each other;

[0036] The wave spring and the thrust ball bearing are installed in contact with each other;

[0037] The lock nut has an external thread and the valve body has an internal thread. The lock nut is installed on the valve body. By squeezing the wave spring and the thrust ball bearing, it is transmitted to the valve core to axially compress the valve core, and a seal is formed between the valve core and the valve body;

[0038] After the reversing valve runs for a long time, when the valve core wears and there is an axial gap, using the characteristics of the wave spring, self-adaptation can be realized, so that there is a certain pre-tightening force between the valve core and the valve body, so that the seal between the valve body and the valve core can be continued, and a part of the space can be cached to reduce the rotational resistance after the valve core expands.

[0039] In the above-described specific embodiments, the purpose, technical solution, and beneficial effects of the present utility model have been further described in detail. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0040] Furthermore, the shapes and sizes of the components in the figures do not reflect the actual sizes and proportions, but merely illustrate the content of the embodiments of the present disclosure. Additionally, in the claims, any reference signs placed between parentheses shall not be construed as limiting the claims.

[0041] The ordinal terms such as "first", "second", "third", etc. used in the specification and claims are used to modify the corresponding elements. They do not in themselves imply any ordinal number for the elements, nor do they represent the order of one element relative to another or the order in the manufacturing method. The use of these ordinal terms is only to clearly distinguish an element with a certain name from another element with the same name.

Claims

1. A reversing valve driving structure, characterized in that: It includes a motor, a motor mounting plate, a driving gear and a driven gear; A motor mounting position is provided on the back side of the motor mounting plate, and a gear mounting cavity and a fixing position are provided on the front side; the motor is fixedly mounted on the back side of the motor mounting plate, and its driving end passes through the motor mounting plate and extends out of the gear mounting cavity; the driving gear is located in the gear mounting cavity and is sleeved on the driving end of the motor; a gear shaft fixedly connected to the driven gear is provided at the center of the driven gear, and the gear shaft is connected to the gear mounting cavity through an oil-containing bearing; the driving gear and the driven gear are meshed in the gear mounting cavity.

2. A reversing valve driving structure according to claim 1, characterized in that: It also includes a reversing valve; the action end of the reversing valve is connected to the gear shaft of the driven gear; the reversing valve includes a valve body, a valve core, a thrust ball bearing and a locking cap; The locking cap is sealed at the opening of the valve body; the valve core is located in the valve body and cooperates with the valve body through a thrust ball bearing; a wave spring is also provided between the thrust ball bearing and the locking cap.

3. A reversing valve driving structure according to claim 2, characterized in that: The central axes of the wave spring, the valve body, the valve core, the thrust ball bearing and the locking cap coincide with each other.

4. A reversing valve driving structure according to claim 1, characterized in that: The oil-containing bearing is interference-fitted with the motor mounting plate.

5. A reversing valve driving structure according to claim 1, characterized in that: The back side and the front side of the motor mounting plate are both stepped surfaces; the side surface of the gear mounting cavity close to the driving gear is an arc surface.

6. A reversing valve driving structure according to claim 1, characterized in that: The end of the gear shaft extends through the plane where the fixing position is located.

7. A reversing valve, characterized in that: Including valve body, valve core, thrust ball bearing and locking cap; The locking cap is sealed at the opening of the valve body; the valve core is located in the valve body and cooperates with the valve body through a thrust ball bearing; a wave spring is also provided between the thrust ball bearing and the locking cap.

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