Device for adjusting belt tension degree of evaporative condenser

Abstract

The utility model provides a device for adjusting the belt tension degree of an evaporative condenser. The device comprises an adjusting assembly, a lower frame and a motor upper base. The adjusting assembly comprises a transmission rod, a first gear, a second gear, a belt adjusting screw and a fixing nut. The transmission rod is perpendicular to the belt adjusting screw rod and connected with the first gear and the second gear. The first gear is meshed with the second gear; the belt adjusting screw penetrates through the fixing nut and is matched with the fixing nut in a threaded mode. The fixing nut is fixedly connected with the motor upper seat; the motor upper seat is positioned above the lower frame; according to the device, a transmission rod is rotated to drive a first gear connected to the transmission rod to rotate, so that a second gear drives a belt adjusting screw rod to rotate, and then a fixing nut and a motor upper seat move along the belt adjusting screw rod; and therefore, the synchronous movement of the motor arranged on the motor upper seat is realized, and the tension degree of the belt wound on the motor is adjusted.

Description

Technical Field

[0001] The utility model relates to inspection and adjustment of an evaporative condenser, in particular to a device for adjusting the tension of a belt of an evaporative condenser. Background Art

[0002] Condenser is one of the main heat exchange equipment in various industries such as food, chemical and pharmaceutical, and has a wide range of applications. Evaporative condenser is one of them, also known as evaporative cooling, a heat exchange device used for cooling cold storage, which is composed of a fan, condensing coil, heat exchange plate, box and other components. In the evaporative cooling equipment, a pulley device is provided between the fan and the motor. The belt will loosen after running for a long time, resulting in unstable operation of the fan, and even damage to the equipment or cause safety accidents. Therefore, the inspection and adjustment of the evaporative cooling belt is a daily maintenance work. Take the adjustment of the BAC VC2-975 evaporative cooling belt as an example: the motor base of the BAC VC2-975 evaporative cooling is equipped with an adjustment rod for adjusting the belt, and a protective cover is provided around the fan. In the prior art, to adjust the belt tension, it is first necessary to lock the fan and remove the protective cover, and then adjust the adjustment rod of the motor base and restore it. If the required belt tension cannot be met after adjustment, the above steps need to be repeated. The disadvantages of this adjustment method are long maintenance time, complex operation, low efficiency, and hidden dangers to the safety of maintenance personnel. Utility Model Content

[0003] In view of the above-mentioned defects of the prior art, the utility model provides a device for adjusting the tension of the evaporative condenser belt, which can accurately adjust the belt tension outside the protective cover without locking the fan and removing the protective cover.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0005] A device for adjusting the tension of an evaporative condenser belt, comprising: an adjustment assembly, a lower frame and an upper motor seat;

[0006] The adjustment assembly includes a transmission rod, a first gear, a second gear, a belt adjustment screw and a fixing nut; the transmission rod and the belt adjustment screw are vertically arranged and are respectively connected to the first gear and the second gear; the first gear and the second gear are meshed with each other; the belt adjustment screw passes through the fixing nut and the threads of the two are adapted to each other;

[0007] The fixing nut is fixedly connected to the upper seat of the motor; the upper seat of the motor is located above the lower frame;

[0008] The device is configured to: rotate the transmission rod to drive the first gear connected thereto to rotate, so that the second gear drives the belt adjusting screw to rotate, thereby causing the fixing nut and the upper seat of the motor to move along the belt adjusting screw, thereby achieving synchronous movement of the motor installed on the upper seat of the motor to adjust the tension of the belt wrapped around the motor.

[0009] Preferably, the adjustment assembly further comprises a transmission rod fixing seat; the transmission rod passes through the transmission rod fixing seat.

[0010] Preferably, a bearing is provided at one end of the belt adjusting screw that passes through the side of the lower frame to keep the position of the belt adjusting screw unchanged.

[0011] Preferably, the lower frame includes a round tube and a square channel steel connected end to end in sequence; the number of the round tube and the square channel steel are two and they are symmetrically arranged; the front and rear ends of the motor upper seat are sleeved outside the round tube and can slide left and right along the direction of the belt adjusting screw; the bearing is resting in the groove of the square channel steel to keep the position of the belt adjusting screw unchanged.

[0012] Preferably, the upper seat of the motor includes a base and two sleeves connected at both ends thereof; the two sleeves are respectively sleeved outside the front and rear round tubes.

[0013] Preferably, the number of the motor upper seats is at least two; the motor bottom is fixedly connected to the motor upper seats by bolts.

[0014] Preferably, the transmission rod fixing seat comprises a hollow cylinder, a supporting member, and a fixing member which are connected in sequence; the transmission rod passes through the hollow cylinder and is connected to the first gear and can rotate inside the hollow cylinder.

[0015] Preferably, the transmission rod is retractable.

[0016] Preferably, the transmission rod fixing seat is telescopic up and down.

[0017] Preferably, the transmission rod and the transmission rod fixing seat are made of stainless steel.

[0018] Compared with the prior art, the beneficial effects of the utility model are embodied in:

[0019] The utility model designs a device for adjusting the belt tension of an evaporative cooling fan. The device can adjust the belt tension without removing the fan protective cover, is safe and simple to operate, saves time, and improves work efficiency. The device can be applied to all evaporative condensers with belt adjustment equipment in the protective cover.

[0020] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a schematic diagram of the structure of a device for adjusting the tension of an evaporative condenser belt according to an embodiment of the present invention.

[0022] Figure 2 The utility model is a schematic diagram of the structure of an adjusting component of a device for adjusting the tension of an evaporative condenser belt according to an embodiment of the present invention.

[0023] Figure 3 It is a partial schematic diagram of a lower frame of a device for adjusting the tension of an evaporative condenser belt and an upper seat of a motor in one embodiment of the utility model.

[0024] Figure 4 It is a front view of a motor fixed on a device according to an embodiment of the utility model.

[0025] Figure 5 It is a side view of a motor fixed on a device according to an embodiment of the utility model.

[0026] Figure 6 The utility model is a schematic diagram of the structure of a transmission rod fixing seat of a device for adjusting the tension of an evaporative condenser belt according to an embodiment of the present invention.

[0027] Among them: 1-adjustment component, 11-transmission rod, 12-transmission rod fixing seat, 121-hollow cylinder, 122-support, 123-fixing piece, 13-first gear, 14-second gear, 15-belt adjustment screw, 16-fixing nut, 17-bearing, 2-lower frame, 21-round tube, 22-square channel steel, 3-motor upper seat, 31-base, 32-sleeve, 4-belt, 5-motor DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, the utility model is further described with reference to specific diagrams. However, the utility model is not limited to the following implementation cases.

[0029] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present utility model can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present utility model without affecting the effects and purposes that can be achieved by the present utility model.

[0030] Embodiment 1:

[0031] like Figure 1-3A device for adjusting the tension of an evaporative condenser belt is shown, comprising: an adjustment assembly 1, a lower frame 2 and an upper motor seat 3;

[0032] The adjustment assembly 1 includes a transmission rod 11, a first gear 13, a second gear 14, a belt adjustment screw 15 and a fixing nut 16; the transmission rod 11 and the belt adjustment screw 15 are vertically arranged and are respectively connected to the first gear 13 and the second gear 14; the first gear 13 and the second gear 14 are meshed with each other; the belt adjustment screw 15 passes through the fixing nut 16 and the threads of the two are adapted to each other;

[0033] The fixing nut 16 is fixedly connected to the upper base 3 of the motor; the upper base 3 of the motor is located above the lower frame 2;

[0034] The device is configured as follows: by rotating the transmission rod 11, the first gear 13 connected thereto is driven to rotate, so that the second gear 14 drives the belt adjusting screw 15 to rotate, thereby causing the fixing nut 16 and the motor upper seat 3 to move along the belt adjusting screw 15, thereby achieving synchronous movement of the motor installed on the motor upper seat 3 to adjust the tension of the belt wrapped around the motor.

[0035] Furthermore, the adjustment assembly 1 further includes a transmission rod fixing seat 12; the transmission rod 11 passes through the transmission rod fixing seat 12. The transmission rod fixing seat 12 is used to fix the transmission rod 11, to ensure that the transmission rod 11 and the first gear 13 rotate around the center of the transmission rod 11 without deviation during adjustment, and the first gear 13 and the second gear 14 are accurately meshed, and the transmission rod fixing seat 12 can ensure that the force on the transmission rod 11 is stably transmitted to the belt adjustment screw 15;

[0036] Through gear transmission, the transmission rod 11 transmits force to the belt adjusting screw 15. Since the position of the belt adjusting screw 15 remains unchanged, the fixing nut 16 rotates on the belt adjusting screw 15, driving the motor upper seat 3 to move left and right along the direction of the belt adjusting screw 15.

[0037] Further, in this embodiment, the first gear 13 and the second gear 14 are 90-degree bevel gears. In other embodiments, one of the first gear 13 and the second gear 14 can be a 90-degree bevel gear and the other can be a bevel gear.

[0038] Specifically, a bearing 17 is provided at one end of the belt adjusting screw 15 passing through the side of the lower frame 2, and the bearing 17 is fixedly connected to the belt adjusting screw 15 to keep the position of the belt adjusting screw 15 unchanged. The number of bearings 17 can be 1 or 2, and the number of bearings 17 selected in this embodiment is 1.

[0039] The lower frame 2 includes a round tube 21 and a square channel steel 22 connected end to end in sequence; the number of the round tube 21 and the square channel steel 22 are both 2 and symmetrically arranged; the front and rear ends of the motor upper seat 3 are sleeved outside the round tube 21, and can slide left and right along the direction of the belt adjusting screw 15; the bearing 17 is against the groove of the square channel steel 22 to keep the position of the belt adjusting screw 15 unchanged.

[0040] The motor upper base 3 includes a base 31 and two sleeves 32 connected at both ends thereof; the two sleeves 32 are respectively sleeved outside the front and rear round tubes 21.

[0041] like Figure 4-5 As shown, the number of the motor upper seats 3 is at least 2, and preferably 2 in this embodiment; the bottom of the motor 5 is fixed to the motor upper seats 3 by bolts.

[0042] like Figure 6 As shown, the transmission rod fixing seat 12 includes a hollow cylinder 121, a support member 122, and a fixing member 123 connected in sequence; the transmission rod 11 passes through the hollow cylinder 121 and is connected to the first gear 13 and can rotate in the hollow cylinder 121. When used, a lubricant can be used to reduce the friction when the transmission rod 11 rotates; the transmission rod fixing seat 12 can make the adjustment component 1 more stable as a whole, and an anti-slip pad can be set under the fixing member 123.

[0043] The transmission rod 11 is retractable, and further, the transmission rod fixing seat 12 is retractable up and down. The transmission rod 11 and the transmission rod fixing seat 12 are configured to be retractable, and can be adapted to different types of evaporative cooling.

[0044] The transmission rod 11 and the transmission rod fixing seat 12 are made of stainless steel.

[0045] When in use, just connect the torque wrench to the end of the transmission rod 11 extending out of the protective cover. Through gear transmission, the transmission rod 11 transmits force to the belt adjustment screw 15, so that the fixing nut 16 drives the motor upper seat 3 to move left and right along the direction of the belt adjustment screw 15, so as to adjust the position of the motor 5, thereby tightening the belt 4 or loosening the belt 4. Specifically, rotate the torque wrench clockwise, and drive the motor upper seat 3 to move to the right through the belt adjustment screw 15. At this time, the center distance between the motor pulley and the fan pulley becomes longer, so as to achieve the purpose of tightening the belt and adjusting the belt tension. Preset the torque value, use the torque wrench to slowly increase the force until you hear the torque wrench make a "tower" sound, stop increasing the force, and test the torque value required for the belt tension. Using a digital torque wrench can standardize the torque value and adjust the belt tension more accurately. The utility model is suitable for all evaporative condensers with belt adjustment equipment in the protective cover.

[0046] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technology in the field can make many modifications and changes according to the concept of the utility model without creative work. Therefore, any technical solution that can be obtained by a technician in the technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A device for adjusting the tension of an evaporative condenser belt, characterized in that: include: Adjustment assembly (1), lower frame (2) and motor upper seat (3); The adjustment assembly (1) comprises a transmission rod (11), a first gear (13), a second gear (14), a belt adjustment screw (15) and a fixing nut (16); the transmission rod (11) and the belt adjustment screw (15) are arranged vertically and are respectively connected to the first gear (13) and the second gear (14); the first gear (13) and the second gear (14) are meshed with each other; the belt adjustment screw (15) passes through the fixing nut (16) and the threads of the two are adapted to each other; The fixing nut (16) is fixedly connected to the upper motor seat (3); the upper motor seat (3) is located above the lower frame (2); The device is configured to: rotate the transmission rod (11) to drive the first gear (13) connected thereto to rotate, so that the second gear (14) drives the belt adjusting screw (15) to rotate, thereby causing the fixing nut (16) and the motor upper seat (3) to move along the belt adjusting screw (15), thereby achieving synchronous movement of the motor installed on the motor upper seat (3) to adjust the tension of the belt wound on the motor.

2. The device for adjusting the tension of the evaporative condenser belt according to claim 1, characterized in that: The adjustment assembly (1) further comprises a transmission rod fixing seat (12); the transmission rod (11) passes through the transmission rod fixing seat (12).

3. The device for adjusting the tension of the evaporative condenser belt according to claim 1, characterized in that: One end of the belt adjusting screw rod (15) passing through the side of the lower frame (2) is provided with a bearing (17) for keeping the position of the belt adjusting screw rod (15) unchanged.

4. The device for adjusting the tension of the evaporative condenser belt according to claim 3, characterized in that: The lower frame (2) comprises a round tube (21) and a square channel steel (22) connected end to end in sequence; the number of the round tube (21) and the square channel steel (22) are both two and they are symmetrically arranged; the front and rear ends of the upper seat (3) of the motor are sleeved outside the round tube (21) and can slide left and right along the direction of the belt adjusting screw (15); the bearing (17) is abutted in the groove of the square channel steel (22) to keep the position of the belt adjusting screw (15) unchanged.

5. The device for adjusting the tension of the evaporative condenser belt according to claim 4, characterized in that: The motor upper seat (3) comprises a base (31) and two sleeves (32) connected at both ends thereof; the two sleeves (32) are respectively sleeved outside the front and rear two circular tubes (21).

6. The device for adjusting the tension of the evaporative condenser belt according to claim 1, characterized in that: The number of the motor upper seats (3) is at least two; the bottom of the motor (5) is fixedly connected to the motor upper seats (3) by bolts.

7. The device for adjusting the tension of the evaporative condenser belt according to claim 2, characterized in that: The transmission rod fixing seat (12) comprises a hollow cylinder (121), a supporting member (122), and a fixing member (123) which are connected in sequence; the transmission rod (11) passes through the hollow cylinder (121) and is connected to the first gear (13) and can rotate inside the hollow cylinder (121).

8. The device for adjusting the tension of an evaporative condenser belt according to claim 1, characterized in that: The transmission rod (11) is retractable.

9. The device for adjusting the tension of the evaporative condenser belt according to claim 2, characterized in that: The transmission rod fixing seat (12) is telescopic up and down.

10. The device for adjusting the tension of the evaporative condenser belt according to claim 2, characterized in that: The transmission rod (11) and the transmission rod fixing seat (12) are made of stainless steel.

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