Circulating cooling water pump with safety valve

Abstract

The utility model provides a circulating cooling water pump with a safety valve, and belongs to the technical field of water pumps. The problem that in the prior art, the sealing performance in a pump body is insufficient is solved. The pump comprises a pump body and a pump seat, the pump body is fixedly connected with the pump seat, a cooling liquid cavity and a bearing cavity are formed in the pump body, a pump shaft is fixed in the pump body in a penetrating mode, one end of the pump shaft extends out of one end of the pump body, and the other end of the pump shaft is located in the cooling liquid cavity. The limiting column is connected with the inner wall of the pump body and fixedly connected with the outer side of one end of the pump shaft, a waterproof ring seat is arranged at the joint of the pump shaft and one end of the cooling liquid cavity, a waterproof ring is fixed to the waterproof ring seat, a water inlet and a water outlet are formed in the pump body, a safety valve is fixedly installed in the pump body, and a safety valve spring is arranged in the safety valve. The safety valve is fixedly sleeved with an adjusting threaded sleeve, and a connecting channel is formed in one side of the water outlet and communicates with one end of the safety valve. The valve has the advantages of being good in sealing performance, large in flow and not prone to overload.

Description

Technical Field

[0001] The utility model belongs to the technical field of water pumps and relates to a circulating cooling water pump with a safety valve. Background Art

[0002] The function of a circulating water pump is to circulate water through the system repeatedly, overcoming resistance losses in the loop. This function is not directly related to the height of the building. Circulating water pumps are typically located at a heating station (heating center), heat source, or cooling source, operating within the closed loop of a heating or air conditioning water system.

[0003] Chinese patent publication number CN204553242U discloses a circulating water pump, comprising: a pump body, a water inlet, a water outlet and a motor provided on the pump body, the water inlet and the water outlet being respectively connected to the inner cavity of the pump body, an impeller being provided in the inner cavity of the pump body, the impeller being fixedly mounted on the front end of the motor shaft, the motor shaft being connected to the pump body through a mechanical seal, a plurality of heat dissipation pipes being provided between the motor and the pump body, one end of the heat dissipation pipe being fixedly connected to the motor housing, the other end passing through the pump body and communicating with the inner cavity of the pump body, the heat dissipation pipe being sealed to the pump body, and the heat dissipation pipe and the pump body being connected through a hydrogenated nitrile butadiene rubber sealing sleeve.

[0004] The circulating water pump provided by this patent only adds a mechanical sealing structure at the connection between the motor shaft and the pump body. The sealing structure inside the pump body is relatively insufficient, and there is a risk of leakage during use. Utility Model Content

[0005] The purpose of the utility model is to provide a circulating cooling water pump with a safety valve in view of the above problems existing in the prior art.

[0006] The objectives of the utility model can be achieved through the following technical solutions: a circulating cooling water pump with a safety valve, comprising a pump body and a pump seat, the pump body and the pump seat being solidly connected, a cooling liquid chamber and a bearing chamber being formed inside the pump body, a pump shaft being fixed inside the pump body, one end of the pump shaft extending out of one end of the pump body and the other end of the pump shaft being located inside the cooling liquid chamber, one end of the pump shaft being fixedly connected to a limiting column, the limiting column being connected to the inner wall of the pump body and solidly connected to the outer side of one end of the pump shaft, a waterproof ring seat being provided at the connection between the pump shaft and one end of the cooling liquid chamber, a waterproof ring being fixed on the waterproof ring seat, a water inlet and a water outlet being respectively provided inside the pump body, a safety valve being fixedly installed inside the pump body, a safety valve spring being provided inside the safety valve, an adjusting screw sleeve being fixedly sleeved on the outside of the safety valve, a connecting channel being provided on one side of the water outlet, the connecting channel being connected to one end of the safety valve.

[0007] In the above-mentioned circulating cooling water pump with a safety valve, a rolling bearing is fixedly installed in the bearing cavity, a bearing retaining ring is installed on one side of the rolling bearing, and a sleeve is fixedly mounted on the pump shaft, and the sleeve is located in the bearing cavity.

[0008] In the above-mentioned circulating cooling water pump with a safety valve, a flat key is fixedly installed at the connection between the limiting column and the pump shaft.

[0009] In the above-mentioned circulating cooling water pump with a safety valve, a pressure plate is fixedly mounted on the pump shaft, a compression spring washer is fixedly mounted on one side of the waterproof ring, and a spring is fixedly mounted between the pressure plate and the compression spring washer.

[0010] In the above-mentioned circulating cooling water pump with a safety valve, a pump cover is provided at one end of the pump body, a threaded hole is opened on the pump body, and a fastening bolt is fixedly installed in the threaded hole.

[0011] In the above-mentioned circulating cooling water pump with a safety valve, a fastening nut is fixedly connected to the pump shaft where it extends out of the pump body, and an anti-loosening gasket is provided on one side of the fastening nut.

[0012] Compared with the prior art, the circulating cooling water pump with a safety valve provided by the utility model has the following beneficial effects: 1. By arranging a waterproof ring and a waterproof ring seat at the port of the cooling liquid chamber, the sealing inside the cooling liquid chamber is effectively guaranteed; 2. By arranging a safety valve inside the pump body and an adjusting screw sleeve outside the safety valve, the safety valve can be protected. The safety valve is connected to the water outlet through a connecting channel, and the safety valve can prevent the occurrence of overload inside the pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0014] Figure 2 It is a side sectional structural schematic diagram of the utility model.

[0015] In the figure: 1. Pump body; 11. Cooling liquid chamber; 12. Bearing chamber; 13. Pump shaft; 131. Sleeve; 132. Pressure plate; 133. Compression spring washer; 134. Spring; 14. Limiting column; 15. Waterproof ring seat; 16. Waterproof ring; 17. Water inlet; 18. Water outlet; 181. Connecting channel; 2. Pump seat; 3. Safety valve; 31. Safety valve spring; 32. Adjusting screw sleeve; 4. Rolling bearing; 41. Bearing retaining ring; 5. Flat key; 6. Pump cover; 7. Fastening bolt; 8. Fastening nut; 81. Anti-loosening washer. DETAILED DESCRIPTION

[0016] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0017] like Figures 1 to 2 As shown, this embodiment includes a pump body 1 and a pump seat 2, the pump seat 2 is fixedly connected to the outside of the pump body 1, a cooling liquid chamber 11 and a bearing chamber 12 are formed inside the pump body 1, the cooling liquid chamber 11 and the bearing chamber 12 are located in the same horizontal plane, the rolling bearing 4 is fixedly installed in the bearing chamber 12, a bearing retaining ring 41 is installed on one side of the inner wall of the bearing chamber 12, the bearing retaining ring 41 is connected to the rolling bearing 4, a sleeve 131 is sleeved and fixed on the pump shaft 13 located in the bearing chamber 12, the pump shaft 13 is located inside the pump body 1 and passes through the cooling liquid chamber 11 and the bearing chamber 12 in sequence, one end of the pump shaft 13 extends out of one end of the pump body 1 and the other end of the pump shaft 13 is located inside the cooling liquid chamber 11, a limiting column 14 is fixed on the inner wall of the cooling liquid chamber 11, the number of the limiting columns 14 is two and the limiting columns 14 will pump One end of the shaft 13 is clamped and fixed to limit the position, and the limiting column 14 stably fixes one end of the pump shaft 13. A waterproof ring seat 15 is provided at the outlet end of the cooling liquid chamber 11, and the waterproof ring 16 is fixed on the waterproof ring seat 15. The waterproof ring 16 and the waterproof ring seat 15 ensure the sealing of the cooling liquid chamber 11 to prevent the coolant in the cooling liquid chamber 11 from leaking. A pressure plate 132 is fixedly installed on the pump shaft 13 located in the cooling liquid chamber 11, and a compression spring washer 133 is fixedly installed on one side of the waterproof ring 16. The spring 134 is fixedly installed between the pressure plate 132 and the compression spring washer 133. The pump cover 6 is fixedly installed on one end of the pump body 1 close to the cooling liquid chamber 11. A threaded hole is opened on the pump body 1, and a fastening bolt 7 is fixedly installed in the threaded hole. The pump cover 6 is connected to the pump body 1 through the fastening bolt 7.

[0018] like Figures 1 to 2 As shown, a water inlet 17 and a water outlet 18 are respectively provided inside the pump body 1, and a safety valve 3 is fixedly installed inside the pump body 1 near the water inlet 17 and the water outlet 18. A safety valve 3 spring 134 is provided inside the safety valve 3, and an adjusting screw sleeve 32 is fixedly mounted on the outside of the safety valve 3. A connecting channel 181 is provided on one side of the water outlet 18, and the connecting channel 181 is connected to one end of the safety valve 3. The safety valve 3 is connected to the water outlet 18 through the connecting channel 181. The safety valve 3 serves to prevent overload inside the pump body 1.

[0019] To elaborate further, Figure 1 As shown, a flat key 5 is fixedly installed at the connection between the limiting column 14 and the pump shaft 13 , and the flat key 5 can increase the torque of the pump shaft 13 .

[0020] To elaborate further, Figure 1As shown, the pump shaft 13 extends out of the pump body 1 and is fixedly connected to a fastening nut 8. The fastening nut 8 is sleeved on the outside of the pump shaft 13 and is fixedly connected to one end of the pump body 1. An anti-loosening gasket 81 is installed on the inside of the fastening nut 8. The fastening nut 8 serves to stabilize the pump shaft 13.

[0021] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0022] Although various terms are used in this document, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A circulating cooling water pump with a safety valve, comprising a pump body (1) and a pump seat (2), wherein the pump body (1) and the pump seat (2) are fixedly connected to each other, and characterized in that: A cooling liquid chamber (11) and a bearing chamber (12) are formed inside the pump body (1); a pump shaft (13) is fixedly disposed inside the pump body (1); one end of the pump shaft (13) extends out of one end of the pump body (1) and the other end of the pump shaft (13) is located inside the cooling liquid chamber (11); one end of the pump shaft (13) is fixedly connected to a limiting column (14); the limiting column (14) is connected to the inner wall of the pump body (1) and is fixedly connected to the outer side of one end of the pump shaft (13); a prevention member is provided at the connection between the pump shaft (13) and one end of the cooling liquid chamber (11). A water ring seat (15), a water ring (16) is fixed on the water ring seat (15), a water inlet (17) and a water outlet (18) are respectively provided inside the pump body (1), a safety valve (3) is fixedly installed inside the pump body (1), a safety valve (3) spring (134) is provided inside the safety valve (3), an adjusting screw sleeve (32) is fixedly sleeved on the outside of the safety valve (3), a connecting channel (181) is provided on one side of the water outlet (18), and the connecting channel (181) is connected to one end of the safety valve (3).

2. A circulating cooling water pump with a safety valve according to claim 1, characterized in that: A rolling bearing (4) is fixedly installed in the bearing cavity (12), a bearing retaining ring (41) is installed on one side of the rolling bearing (4), and a sleeve (131) is sleeved and fixed on the pump shaft (13), and the sleeve (131) is located in the bearing cavity (12).

3. A circulating cooling water pump with a safety valve according to claim 1, characterized in that: A flat key (5) is fixedly installed at the connection between the limiting column (14) and the pump shaft (13).

4. A circulating cooling water pump with a safety valve according to claim 1, characterized in that: A pressure plate (132) is fixedly mounted on the pump shaft (13), a compression spring washer (133) is fixedly mounted on one side of the waterproof ring (16), and a spring (134) is fixedly mounted between the pressure plate (132) and the compression spring washer (133).

5. A circulating cooling water pump with a safety valve according to claim 1, characterized in that: A pump cover (6) is provided at one end of the pump body (1), and a threaded hole is provided on the pump body (1), in which a fastening bolt (7) is fixedly installed.

6. A circulating cooling water pump with a safety valve according to claim 1, characterized in that: A fastening nut (8) is fixedly connected to the pump shaft (13) where it protrudes from the pump body (1), and an anti-loosening gasket (81) is arranged on one side of the fastening nut (8).

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