Pump head structure of integrated plunger pump with temperature control function

Abstract

The utility model discloses a pump head structure of an integrated plunger pump with a temperature control function, which comprises a pump head main body, a pump head and a temperature control device, each liquid inlet one-way valve is mounted in the pump head main body, and a liquid inlet channel of each liquid inlet one-way valve is communicated with the pump cavity; each liquid outlet one-way valve is mounted in the pump head main body, and a liquid outlet channel of each liquid outlet one-way valve is communicated with the pump cavity; one end of the plunger rod penetrates through the pump head main body and then extends into the pump cavity; a temperature control cavity is formed in the pump head main body, and at least one temperature control liquid inlet communicated with the temperature control cavity and at least one temperature control liquid outlet communicated with the temperature control cavity are formed in the pump head main body. According to the utility model, the efficient and stable temperature control effect is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid conveying equipment, in particular to a pump head structure of an integrated plunger pump with a temperature control function. Background Art

[0002] Plunger pumps offer advantages such as accurate flow rates, high pressure deliverables, excellent flow repeatability, and reliable performance. They are widely used in fluid delivery systems in industries such as petroleum, fine chemicals, biomedicine, new materials, new energy, scientific research, and the food industry. The operating principle of a plunger pump is primarily based on the reciprocating linear motion of a plunger rod within a sealed pump chamber, causing the pump chamber's volume to change. This is achieved by controlling the flow of fluid through inlet and outlet check valves, thereby achieving suction and discharge.

[0003] Under certain special working conditions, the medium must be transported at low temperature. For example, some media that are easily vaporized at room temperature. Due to the complex structure of the pump head of the plunger pump, the current external cooling device can only cool part of the pump head, and the cooling and temperature control effect is poor. It is easy to cause the medium in the pump head to heat up, causing the medium in the pump head to heat up and vaporize, resulting in inaccurate flow and other adverse effects.

[0004] In other special working conditions, the medium must be transported at high temperature. For example, some media are easy to solidify or crystallize at room temperature. Due to the complex structure of the pump head of the plunger pump, the existing external heating device can only heat the pump head locally, and the heating and temperature control effect is poor. It is easy to cool the medium in the pump head, causing the medium temperature in the pump head to drop and solidify or crystallize, resulting in adverse effects such as inaccurate flow and wear of the sealing ring.

[0005] Therefore, the applicant has found a solution to the above-mentioned problem through beneficial exploration and research. The technical solution to be introduced below is produced in this context. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a pump head structure of an integrated plunger pump with a temperature control function, which has a simple and reliable structure, a stable and efficient control effect, and a temperature control function, in response to the deficiencies of the existing technology.

[0007] The technical problem to be solved by the present invention can be achieved by adopting the following technical solutions:

[0008] A pump head structure of an integrated plunger pump with a temperature control function, comprising:

[0009] A pump head body, wherein a pump cavity is formed in the pump head body;

[0010] At least one liquid inlet one-way valve, each liquid inlet one-way valve is installed in the pump head body and its liquid inlet channel is connected to the pump chamber;

[0011] At least one liquid outlet one-way valve, each liquid outlet one-way valve is installed in the pump head body and its liquid outlet channel is connected to the pump chamber; and

[0012] A plunger rod, one end of which passes through the pump head body and extends into the pump cavity; characterized in that:

[0013] A temperature control cavity is formed in the pump head body, and the pump head body is provided with at least one temperature control liquid inlet communicated with the temperature control cavity and at least one temperature control liquid outlet communicated with the temperature control cavity.

[0014] In a preferred embodiment of the present invention, the pump head main body includes a pump body, a pump cover and a temperature control cavity cover, the pump body is constituted with the pump cavity and the temperature control cavity, each temperature control liquid inlet and each temperature control liquid outlet are located on the outer surface of the pump body, the pump cover is detachably mounted on one side end face of the pump body and closes the pump cavity opening of the pump cavity, and the temperature control cavity cover is detachably mounted on the other side end face of the pump head and closes the temperature control cavity opening of the temperature control cavity.

[0015] In a preferred embodiment of the present invention, at least one liquid inlet one-way valve mounting hole communicating with the pump chamber is provided on the lower end face of the pump body, and each liquid inlet one-way valve is installed in the corresponding liquid inlet one-way valve mounting hole; at least one liquid outlet one-way valve mounting hole communicating with the pump chamber is provided on the upper end face of the pump body, and each liquid outlet one-way valve is installed in the corresponding liquid outlet one-way valve mounting hole.

[0016] In a preferred embodiment of the present invention, a front sealing ring is provided between the pump body and the pump cover, a rear sealing ring is provided in the pump cover and is coaxially arranged with the front sealing ring, and one end of the plunger rod passes through the rear sealing ring and the front sealing ring and extends into the pump chamber.

[0017] In a preferred embodiment of the present invention, the front sealing ring and / or the rear sealing ring are made of a flexible elastic material.

[0018] In a preferred embodiment of the present invention, a temperature control cavity sealing ring is provided between the pump body and the temperature control cavity cover.

[0019] In a preferred embodiment of the present invention, the temperature control chamber sealing ring is made of a flexible elastic material.

[0020] In a preferred embodiment of the present invention, a surface increasing structure for increasing the contact area between the temperature control cavity and the temperature control liquid is provided in the temperature control cavity of the pump head body.

[0021] In a preferred embodiment of the present invention, the surface-increasing structure is a groove and / or a hole provided on the inner wall of the temperature control chamber.

[0022] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows: by providing a temperature control chamber within the pump head body, the cooled or heated temperature control liquid can enter the temperature control chamber through the temperature control liquid inlet and then be discharged through the temperature control liquid outlet. Due to the large volume of the temperature control chamber, the energy transmission efficiency is high, so that the material in the pump chamber is quickly cooled or heated and maintained at a constant temperature, achieving efficient and stable temperature control. The present invention also has the advantages of simple structure, strong practicality, and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0025] Figure 2 It is a longitudinal sectional view of the present utility model.

[0026] Figure 3 It is a structural schematic diagram of an embodiment of the pump body of the present utility model.

[0027] Figure 4 It is a structural schematic diagram of another embodiment of the pump body of the present utility model. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0029] See also Figures 1 to 3 , the figure shows a pump head structure of an integrated plunger pump with a temperature control function, including a pump head body 100, two liquid inlet one-way valves 200, two liquid outlet one-way valves 300 and a plunger rod 400.

[0030] The pump head main body 100 includes a pump body 110, a pump cover 120 and a temperature control chamber cover 130. A pump chamber 111 and a temperature control chamber 112 are formed in the pump body 110. The pump cover 120 is detachably mounted on one side end face of the pump body 110 by means of a number of circumferentially arranged fastening bolts 121, and closes the pump chamber opening of the pump chamber 111, thereby forming a seal inside the pump chamber 111. The temperature control chamber cover 130 is detachably mounted on the other side end face of the pump body 110 by means of a number of circumferentially arranged fastening bolts 131, and closes the temperature control chamber opening of the temperature control chamber 112, thereby forming a seal inside the temperature control chamber 112. A temperature control liquid inlet 113 connected to the temperature control chamber 112 and a temperature control liquid outlet 114 connected to the temperature control chamber 112 are provided on the pump head main body 100. The temperature control liquid inlet 113 is located on the lower end surface of the pump body 110, and the temperature control liquid outlet 114 is located on the upper end surface of the pump body 110. Of course, the number of temperature control liquid inlet 113 and temperature control liquid outlet 114 is not limited to that in this embodiment. They should be provided according to actual temperature control requirements and can be provided as two or more.

[0031] Two inlet check valves 200 are installed within the pump head body 100, with their inlet channels communicating with the pump chamber 111. Two inlet check valve mounting holes 115 communicating with the pump chamber 111 are defined on the lower end surface of the pump body 110. Each inlet check valve 200 is installed within a corresponding inlet check valve mounting hole 115. Of course, the number of inlet check valves 200 is not limited to that in this embodiment; they can be provided in one or more configurations depending on the inlet requirements of the plunger pump.

[0032] Two liquid discharge check valves 300 are installed within the pump head body 100, with their liquid discharge passages communicating with the pump chamber 111. Two liquid discharge check valve mounting holes 116 communicating with the pump chamber 111 are defined on the upper end surface of the pump body 110. Each liquid discharge check valve 300 is installed within a corresponding liquid discharge check valve mounting hole 116. Of course, the number of liquid discharge check valves 300 is not limited to that in this embodiment; they can be provided in one or more configurations depending on the liquid discharge requirements of the plunger pump.

[0033] One end of the plunger rod 400 passes through the pump head body 100 and extends into the pump chamber 111. To improve the sealing performance of the plunger rod 400 and prevent material leakage, a front sealing ring 510 is provided between the pump body 110 and the pump cover 120. A rear sealing ring 520 is provided within the pump cover 120 and is coaxially arranged with the front sealing ring 510. One end of the plunger rod 400 passes through the rear sealing ring 520 and the front sealing ring 510 and extends into the pump chamber 111. In this embodiment, the front sealing ring 510 and the rear sealing ring 520 are made of a flexible elastic material, such as fluoroplastic, polyethylene, or the like.

[0034] A temperature control chamber sealing ring 530 is provided between the pump body 110 and the temperature control chamber cover 130, effectively improving the sealing performance between the pump body 110 and the temperature control chamber cover 130 and preventing leakage of the temperature control liquid. In this embodiment, the temperature control chamber sealing ring 530 is made of a flexible elastic material, such as rubber, fluoroplastic, or the like.

[0035] In addition, a surface increasing structure is provided in the temperature control cavity 112 of the pump head body 100 for increasing the contact area between the temperature control cavity 112 and the temperature control liquid. In this embodiment, the surface increasing structure is a hole 112a opened on the inner wall of the temperature control cavity 112 to increase the inner surface area of the temperature control cavity 112, such as Figure 4 Of course, the surface-increasing structure can also be a groove opened on the inner wall of the temperature control cavity 112 or other structures that can increase the inner surface area of the temperature control cavity.

[0036] The working principle of the pump head structure of the integrated plunger pump with temperature control function of the utility model is as follows:

[0037] Driven by the plunger rod drive mechanism, the plunger rod 400 performs reciprocating linear motion, thereby causing the volume of the pump chamber 111 to change, thereby achieving liquid suction and discharge. When the plunger rod 400 moves away from the pump head body 100, the volume of the pump chamber 111 increases, the pressure within the pump chamber 111 decreases, the inlet check valve 200 opens, the outlet check valve 300 closes, and the material is sucked in. When the plunger rod 400 approaches the pump head body 100, the volume of the pump chamber 111 decreases, the pressure within the pump chamber 111 increases, the inlet check valve 300 closes, the outlet check valve 400 opens, and the material is discharged.

[0038] When the material needs to be transported at a low temperature, the cooled temperature control liquid flows into the temperature control chamber 112 from the temperature control liquid inlet 113 at a certain flow rate, and then flows out from the temperature control liquid outlet 114 after passing through the temperature control chamber 112. Since the temperature control chamber 112 has a large volume, the temperature control liquid can keep the pump head body 100 at a constant low temperature after passing through the temperature control chamber 112, so that the material transported in the pump chamber 111 can be quickly cooled and maintain a constant low temperature, thereby achieving an efficient and stable cooling effect.

[0039] When the material needs to be transported at high temperature, the heated temperature control liquid flows into the temperature control chamber 112 from the temperature control liquid inlet 113 at a certain flow rate, and then flows out from the temperature control liquid outlet 114 after passing through the temperature control chamber 112. Since the temperature control chamber 112 has a large volume, the temperature control liquid can keep the pump head body 100 at a constant high temperature after passing through the temperature control chamber 112, so that the material transported in the pump chamber 111 can be quickly heated and maintain a constant high temperature, achieving an efficient and stable heating effect.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A pump head structure of an integrated plunger pump with a temperature control function, comprising: A pump head body, wherein a pump cavity is formed in the pump head body; At least one liquid inlet one-way valve, each liquid inlet one-way valve is installed in the pump head body and its liquid inlet channel is connected to the pump chamber; At least one liquid outlet one-way valve, each liquid outlet one-way valve is installed in the pump head body and its liquid outlet channel is connected to the pump chamber; and A plunger rod, one end of which passes through the pump head body and extends into the pump cavity; characterized in that: A temperature control cavity is formed in the pump head body, and the pump head body is provided with at least one temperature control liquid inlet communicated with the temperature control cavity and at least one temperature control liquid outlet communicated with the temperature control cavity.

2. The pump head structure of the integrated plunger pump with temperature control function according to claim 1, characterized in that: The pump head main body includes a pump body, a pump cover and a temperature control cavity cover. The pump body is constituted with the pump cavity and the temperature control cavity. Each temperature control liquid inlet and each temperature control liquid outlet are located on the outer surface of the pump body. The pump cover is detachably mounted on one side end face of the pump body and closes the pump cavity opening of the pump cavity. The temperature control cavity cover is detachably mounted on the other side end face of the pump head and closes the temperature control cavity opening of the temperature control cavity.

3. The pump head structure of the integrated plunger pump with temperature control function according to claim 2, characterized in that: At least one liquid inlet one-way valve mounting hole connected to the pump chamber is provided on the lower end surface of the pump body, and each liquid inlet one-way valve is installed in the corresponding liquid inlet one-way valve mounting hole; at least one liquid outlet one-way valve mounting hole connected to the pump chamber is provided on the upper end surface of the pump body, and each liquid outlet one-way valve is installed in the corresponding liquid outlet one-way valve mounting hole.

4. The pump head structure of the integrated plunger pump with temperature control function according to claim 2, characterized in that: A front sealing ring is provided between the pump body and the pump cover, a rear sealing ring coaxially arranged with the front sealing ring is provided in the pump cover, and one end of the plunger rod passes through the rear sealing ring and the front sealing ring and then extends into the pump cavity.

5. The pump head structure of the integrated plunger pump with temperature control function according to claim 4, characterized in that: The front sealing ring and / or the rear sealing ring are made of flexible elastic material.

6. The pump head structure of the integrated plunger pump with temperature control function according to claim 2, characterized in that: A temperature control cavity sealing ring is provided between the pump body and the temperature control cavity cover.

7. The pump head structure of the integrated plunger pump with temperature control function according to claim 6, characterized in that: The temperature control cavity sealing ring is made of flexible elastic material.

8. The pump head structure of an integrated plunger pump with temperature control function according to any one of claims 1 to 7, characterized in that: The temperature control cavity of the pump head body is provided with a surface increasing structure for increasing the contact area between the temperature control cavity and the temperature control liquid.

9. The pump head structure of the integrated plunger pump with temperature control function according to claim 8, characterized in that: The surface-increasing structure is a groove and / or a hole opened on the inner wall of the temperature control cavity.

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