Metering pump with gooseneck cooling device

Abstract

The utility model discloses a metering pump with a gooseneck cooling device. The metering pump comprises a metering pump assembly, an overflowing assembly and a cooling assembly. The overflowing assembly comprises an overflowing body and two one-way valves. And a fluid channel which is longitudinally arranged is formed in the overflowing main body. The two one-way valves are symmetrically arranged at the two ends of the fluid channel. The liquid conveying pipe sleeved with the cooling sleeve is additionally arranged between the overflowing main body and the metering pump assembly, so that the metering pump assembly can be primarily cooled through the cooling sleeve when liquid is conveyed, and the situation that the metering pump assembly is damaged due to heat transfer of conveyed liquid is avoided. Meanwhile, a plurality of cooling ring pieces with overflowing openings are arranged in the cooling sleeve, so that in the flowing process of the cooling liquid, the flowing speed of the cooling liquid can be slowed down through the cooling ring pieces, sufficient absorption of heat of the liquid in the cooling liquid conveying pipe is achieved, and the metering pump assembly is further protected.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of metering pump, concretely relates to a metering pump with swan neck cooling device. BACKGROUND

[0002] Metering pump has the advantages such as accurate delivery, adjustable, is the ideal equipment of fluid precision metering and adding, has been widely used in each field including pharmaceutical, food and petrochemical industry, bears the metering addition task of strong corrosive, toxic, high viscosity and high pressure medium in process.

[0003] When the traditional hydraulic diaphragm metering pump is conveying high-temperature medium, the heat of the medium will be transmitted from the front pump head to the diaphragm and then to the hydraulic cavity of the rear pump head through heat conduction, so the temperature of the hydraulic oil in the connecting body will rise. The connecting body and the tank of the mechanical part are connected together by screws, and the tank contains machine oil, so the temperature of the machine oil will also rise. The tank of the mechanical part contains worm gear reduction mechanism and bearing and other transmission components. When the temperature of the machine oil is higher than 75 DEG C, it exceeds the normal use temperature of each component of the mechanical part, which aggravates the wear of each component and greatly reduces the service life of each component.

[0004] In the prior art, some hydraulic diaphragm metering pumps are provided with a liquid conveying pipe between the pump head and the main body of the hydraulic cavity, and a cooling jacket is sleeved on the liquid conveying pipe. However, when the cooling liquid flows at high speed in the cooling jacket, it is difficult to ensure that each part of the liquid conveying pipe is fully cooled, and the liquid in the liquid conveying pipe still transmits heat to the mechanical part, which further reduces the service life of each component. UTILITY MODEL CONTENTS

[0005] In order to make up for the shortcomings of the prior art, the utility model provides a metering pump with a swan neck cooling device to solve the technical problem that the liquid transmitted in the hydraulic diaphragm metering pump is not sufficiently cooled, which reduces the service life of the hydraulic diaphragm metering pump.

[0006] To achieve the above purpose, the specific technical scheme of the utility model is as follows:

[0007] A metering pump with a swan neck cooling device, comprising a metering pump assembly, a flow passing assembly and a cooling assembly. The flow passing assembly comprises a flow passing main body and two one-way valves. A longitudinal fluid passage is formed in the flow passing main body. The two one-way valves are symmetrically arranged at both ends of the fluid passage. The flow passing passage is connected between the flow passing main body and the metering pump assembly through the cooling assembly.

[0008] The cooling assembly comprises a cooling sleeve, a liquid delivery pipe and a plurality of cooling ring pieces.

[0009] Further, the flow-through openings on the adjacent two cooling ring pieces are arranged in a staggered manner.

[0010] Further, the metering pump assembly comprises a metering pump body, a motor and a pump head. The motor is used to drive the metering pump body to work. The pump head is fixed to the end of the metering pump body. The top of the pump head is fixed with a mounting seat assembly matched with the liquid delivery pipe. The end of the liquid delivery pipe is connected with the pump head through the mounting seat assembly.

[0011] Further, the mounting seat assembly comprises a base body and a mounting connector. Both ends of the base body are provided with external threads. The pump head is provided with a threaded hole matched with the external threads of the base body. The base body is screwed with the threaded hole on the pump head. The mounting connector is inserted and fixed to the end of the liquid delivery pipe, and the bottom is screwed with the base body.

[0012] Further, the liquid inlet and the liquid outlet are respectively arranged at the two ends of the cooling sleeve and located on the side wall of the same side of the cooling sleeve.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] The utility model discloses a liquid delivery pipe with a cooling sleeve is arranged between the flow-through body and the metering pump assembly, so that the metering pump assembly can be preliminarily cooled through the cooling sleeve when transmitting liquid, avoiding the damage of the metering pump assembly caused by the heat transfer of the transmitted liquid. Meanwhile, a plurality of cooling ring pieces with flow-through openings are arranged in the cooling sleeve, so that the cooling ring pieces can slow down the flow rate of the cooling liquid during the flow of the cooling liquid, fully absorb the heat of the liquid in the cooling liquid delivery pipe, and further protect the metering pump assembly. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of the utility model;

[0016] Figure 2 It is the relative position schematic diagram of the cooling sleeve and the metering pump assembly in the utility model;

[0017] Figure 3 It is the structure schematic diagram of the cooling assembly in the utility model;

[0018] Figure 4 It is the structure schematic diagram of the mounting seat assembly in the utility modelFigure 2 (Enlarged view of part A in the middle section).

[0019] Reference numerals in the attached drawings: 1. Metering pump assembly; 1-1. Metering pump body; 1-2. Motor; 1-3. Pump head; 2. Flow assembly; 2-1. Flow body; 2-2. Check valve; 3. Cooling assembly; 3-1. Cooling sleeve; 3-2. Infusion pipe; 3-3. Cooling ring; 3-4. Flow port; 4. Mounting base assembly; 4-1. Base body; 4-2. Mounting connector. Detailed Implementation

[0020] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] like Figure 1 and 2 As shown, a metering pump with a gooseneck cooling device includes a metering pump assembly 1, a flow assembly 2, and a cooling assembly 3. The flow assembly 2 includes a flow body 2-1 and two one-way valves 2-2. The flow body 2-1 has a longitudinally arranged fluid channel. The two one-way valves 2-2 are symmetrically arranged at both ends of the fluid channel to prevent backflow of liquid in the flow channel. The flow channel is connected to the metering pump assembly 1 via the cooling assembly 3, allowing the liquid being transported in the flow assembly 2 to be cooled when driven by the metering pump assembly 1. This prevents the liquid from transferring heat to the metering pump assembly 1 during its passage, thus avoiding overheating and damage to components.

[0023] The specific structure is as follows: Figure 2 As shown, the cooling assembly 3 includes a cooling sleeve 3-1, a liquid delivery pipe 3-2, and multiple cooling ring plates 3-3. The two ends of the liquid delivery pipe 3-2 are connected to the flow channel and the metering pump assembly 1, respectively. The cooling sleeve 3-1 is fitted over the liquid delivery pipe 3-2. The outer wall of the cooling sleeve 3-1 has an inlet and an outlet that communicate with the inner cavity. External coolant enters through the inlet and exits through the outlet. The cooling ring plates 3-3 are spaced apart within the inner cavity of the cooling sleeve 3-1, and each cooling ring plate 3-3 has a flow outlet 3-4.

[0024] When the metering pump assembly 1 is in operation, the cooling liquid from the outside is input from the inlet of the cooling sleeve 3-1, cools the liquid in the delivery pipe 3-2, and is discharged from the outlet after absorbing the heat. During the flow of the cooling liquid in the inner cavity of the cooling sleeve 3-1, it will impact on each cooling ring 3-3 in turn, and be discharged from the outlet through the flow port 3-4 on each cooling ring 3-3 in turn. The cooling ring 3-3 slows down the flow rate of the cooling liquid during the flow of the cooling liquid, so that the cooling liquid can fully absorb the heat of the liquid in the delivery pipe 3-2.

[0025] Further, as shown in Figure 3 , the flow ports 3-4 on the adjacent two cooling rings 3-3 are arranged in a staggered manner, further slowing down the flow rate of the cooling liquid, so that it can absorb the heat of the liquid in the delivery pipe 3-2.

[0026] As shown in Figure 2 and 4 , the metering pump assembly 1 comprises a metering pump body 1-1, a motor 1-2 and a pump head 1-3. The motor 1-2 is used to drive the metering pump body 1-1 to operate. The pump head 1-3 is fixed at the end of the metering pump body 1-1. The top of the pump head 1-3 is fixed with a mounting seat assembly 4 cooperating with the delivery pipe 3-2. The end of the delivery pipe 3-2 is connected with the pump head 1-3 through the mounting seat assembly 4. When the motor 1-2 drives the plunger in the metering pump body 1-1 to reciprocate, first, the liquid to be delivered is sucked into the flow body 2-1 from one end of the flow body 2-1, and flows through the delivery pipe 3-2 into the metering pump body 1-1. Secondly, the liquid entering the metering pump body 1-1 flows reversely under the pushing of the plunger, and is output from the other end of the flow body 2-1, thereby realizing the delivery of the liquid.

[0027] In this embodiment, the mounting seat assembly 4 comprises a base body 4-1 and a mounting connector 4-2. The two ends of the base body 4-1 are provided with external threads. Threaded holes are formed in the pump head 1-3 to cooperate with the external threads of the base body 4-1. The base body 4-1 is screwed with the threaded holes on the pump head 1-3.

[0028] The mounting connector 4-2 is inserted and fixed at the end of the delivery pipe 3-2. The bottom of the mounting connector 4-2 is provided with internal threads cooperating with the end of the base body 4-1. The mounting connector 4-2 is fixed with the base body 4-1 through the screwing between the internal threads on the mounting connector 4-2 and the external threads on the corresponding side end of the base body 4-1.

[0029] In addition, in this embodiment, the inlet and outlet of the cooling sleeve 3-1 are respectively formed at the two ends of the cooling sleeve 3-1 and on the same side wall of the cooling sleeve 3-1.

[0030] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A metering pump with gooseneck cooling device, comprising a metering pump assembly (1) and a flow assembly (2), the flow assembly (2) comprising a flow body (2-1) and two one-way valves (2-2); a fluid channel is formed on the flow body (2-1); the two one-way valves (2-2) are symmetrically arranged at both ends of the fluid channel; characterized in that: The cooling assembly (3) is further included; the flow passage is connected with the metering pump assembly (1) through the cooling assembly (3); The cooling assembly (3) comprises a cooling sleeve (3-1), a liquid delivery pipe (3-2) and a plurality of cooling ring pieces (3-3); two ends of the liquid delivery pipe (3-2) are connected with the flow passage and the metering pump assembly (1) respectively; the cooling sleeve (3-1) is sleeved on the liquid delivery pipe (3-2); the cooling sleeve (3-1) is provided with a liquid inlet and a liquid outlet which are communicated with the inner cavity; the cooling ring pieces (3-3) are arranged in the inner cavity of the cooling sleeve (3-1) at intervals, and the cooling ring pieces (3-3) are provided with flow ports (3-4).

2. A metering pump with gooseneck cooling according to claim 1, characterized in that: The flow ports (3-4) on the adjacent two cooling ring pieces (3-3) are arranged in a staggered manner.

3. A metering pump with gooseneck cooling according to claim 1, characterized in that: The metering pump assembly (1) comprises a metering pump body (1-1), a motor (1-2) and a pump head (1-3); the motor (1-2) is used for driving the metering pump body (1-1) to work; the pump head (1-3) is fixed to the end of the metering pump body (1-1).

4. A metering pump with gooseneck cooling according to claim 3, characterized in that: The pump head (1-3) is provided with a mounting seat assembly (4) matched with the liquid delivery pipe (3-2); the liquid delivery pipe (3-2) is connected with the pump head (1-3) through the mounting seat assembly (4).

5. A metering pump with gooseneck cooling according to claim 4, characterized in that: The mounting seat assembly (4) comprises a base body (4-1) and a mounting connector (4-2); both ends of the base body (4-1) are provided with external threads; the pump head (1-3) is provided with a threaded hole matched with the external threads of the base body (4-1); the base body (4-1) is screwed with the threaded hole on the pump head (1-3).

6. A metering pump with gooseneck cooling according to claim 5, characterized in that: The mounting connector (4-2) is inserted and fixed to the end of the liquid delivery pipe (3-2), and the bottom is screwed with the base body (4-1).

7. A metering pump with gooseneck cooling according to claim 1, characterized in that: The liquid inlet and the liquid outlet are arranged at two ends of the cooling sleeve (3-1) and on the side wall of the same side of the cooling sleeve (3-1).

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