Delivery pump for unsaturated polyester resin

Abstract

The utility model discloses a delivery pump for unsaturated polyester resin, which comprises a pump body, a rotating shaft is rotatably arranged in a pump shell of the pump body in a penetrating manner, a first sealing assembly and a second sealing assembly are arranged in the pump shell, the first sealing assembly comprises a fixed seat fixedly arranged in the middle section of the interior of the pump shell and a mechanical seal arranged in the fixed seat, and the second sealing assembly is arranged in the fixed seat. A mounting groove is formed in the fixing seat, the mechanical seal is arranged in the mounting groove and tightly attached to the side wall of the rotating shaft, the second sealing assembly comprises a sealing piece tightly attached to the first sealing assembly, a spring seat fixedly arranged on the side wall in the pump shell and a spring abutting against the position between the sealing piece and the spring seat, and the spring is in a compressed state. According to the conveying pump for the unsaturated polyester resin, the sealing performance of the conveying pump for the unsaturated polyester resin is improved through cooperation of the mechanical seal and the sealing piece, leakage of the mechanical seal is prevented, unorganized emission of part of tail gas passing through gaps is avoided, environmental pollution is reduced, and meanwhile human health is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of chemical equipment especially relates to a conveying pump for unsaturated polyester resin. BACKGROUND

[0002] Unsaturated polyester resin is generally a linear high molecular compound containing unsaturated diacid or dihydric alcohol which is polymerized from diacid and dihydric alcohol, and is a viscous liquid dissolved in monomer (usually styrene), which can be cured at room temperature, molded at normal pressure, and has flexible process performance, especially suitable for large-scale and on-site manufacturing of glass steel products, and has good comprehensive performance after curing, wide application, and low price, so it is used as a common industrial raw material. Unsaturated polyester resin has high viscosity, poor flowability, flammability, and contains volatile vinyl monomers such as styrene in the resin, and the solvent is volatile. In the prior art, resin conveying pumps are usually used as power equipment during the production and transportation of unsaturated polyester resin, but the existing resin conveying pumps often leak during use, resulting in unorganized emission of part of the tail gas, causing environmental pollution and affecting human health. SUMMARY

[0003] Therefore, the utility model provides a conveying pump for unsaturated polyester resin to solve the above problems.

[0004] The utility model solves the technical problems and adopts the technical scheme of:

[0005] A conveying pump for unsaturated polyester resin, comprising a pump body, a rotating shaft rotatably arranged in the pump shell of the pump body, a first sealing assembly and a second sealing assembly arranged in the interior of the pump shell, the first sealing assembly comprising a fixed seat fixedly arranged in the middle section of the interior of the pump shell, and a mechanical seal installed in the fixed seat, an installation groove being formed in the interior of the fixed seat, the mechanical seal being arranged in the installation groove and tightly abutting against the side wall of the rotating shaft, the second sealing assembly comprising a sealing element tightly arranged on the first sealing assembly, a spring seat fixedly arranged on the side wall of the interior of the pump shell, and a spring abutting between the sealing element and the spring seat, the spring being in a compressed state.

[0006] Further, the pump body further comprises a heat preservation shell sleeved on the exterior of the pump shell, the heat preservation shell is fixedly connected or integrally formed with the pump shell, the side wall bottom and the top wall side of the heat preservation shell are respectively connected with an oil inlet pipe and an oil outlet pipe, a heat preservation cavity is arranged between the heat preservation shell and the pump shell, and the oil inlet pipe and the oil outlet pipe are both in communication with the heat preservation cavity.

[0007] Further, a resin inlet pipe is connected to the side wall of the pump shell, one end of the resin inlet pipe extending through the side wall of the heat preservation shell to the outside of the heat preservation shell, a resin outlet pipe being connected to the side wall of the top wall of the pump shell near the one end of the resin inlet pipe, one end of the resin outlet pipe extending through the top wall of the heat preservation shell to the outside of the heat preservation shell, the resin inlet pipe and the resin outlet pipe being in communication with the interior of the pump shell.

[0008] Further, one end of the rotating shaft extending through the second sealing assembly and the first sealing assembly extends below the resin outlet pipe.

[0009] Further, the pump body further comprises a rotor assembly sleeved on the rotating shaft, the rotor assembly comprising an outer rotor and an inner rotor embedded in the outer rotor, the rotor assembly being fixedly sleeved on the one end of the rotating shaft below the resin outlet pipe and the rotor assembly being spaced apart from the first sealing assembly.

[0010] Further, the interior of the pump shell is provided with a limiting piece, the limiting piece being fixed to the side wall in the interior of the pump shell and the limiting piece being arranged between the second sealing assembly and the rotating shaft.

[0011] Further, the interior side wall of the pump shell is provided with a bearing seat, a bearing being installed in the bearing seat, the rotating shaft being arranged in the bearing.

[0012] Further, the exterior side wall of the pump shell is fixedly provided with a shaft seal, the shaft seal being sleeved on the rotating shaft.

[0013] Further, the unsaturated polyester resin conveying pump further comprises a motor and a base, the motor being arranged on one side of the pump body, the base being arranged at the bottom of the pump body and the motor.

[0014] Further, one end of the rotating shaft extending through the side wall of the pump shell near the motor is fixedly connected with the output shaft of the motor.

[0015] The beneficial effects of the present application are as follows:

[0016] The utility model provides a conveying pump for unsaturated polyester resin includes the pump body for conveying unsaturated polyester resin, the rotatable wear of pump shell inside is equipped with the shaft, the inside of pump shell is provided with with the first sealing component and the second sealing component of mutual cooperation of shaft, the first sealing component includes the fixed seat of fixed setting in the inside middle section of pump shell, and the mechanical seal of installation in fixed seat, the inside of fixed seat is equipped with the installation groove for accommodating mechanical seal, mechanical seal sets up in the installation groove and is tightly combined with the side wall of shaft to prevent resin and tail gas leakage, the sealing piece of tightly pasting in the first sealing component for sealing the first sealing component gap, the spring seat of fixed setting on the inside side wall of pump shell and the spring of resisting between sealing piece and spring seat, the spring is in compression state, the spring of compression state holds the sealing piece tightly and pastes the surface of fixed seat and mechanical seal, improves the sealing performance of conveying pump for unsaturated polyester resin through the cooperation of mechanical seal and sealing piece, prevents the leakage of mechanical seal, avoids the unorganized emission of part tail gas through the gap, reduces the environmental pollution and guarantees the human health. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model makes further explanation in combination with the drawings and examples.

[0018] Figure 1 It is the front view of conveying pump for unsaturated polyester resin of the utility model,

[0019] Figure 2 It is Figure 1 It is the sectional view of conveying pump for unsaturated polyester resin shown in the figure,

[0020] Figure 3 It is Figure 2 It is the enlarged view of A place in conveying pump for unsaturated polyester resin shown in the figure.

[0021] In the drawing: 100, conveying pump for unsaturated polyester resin, 1, pump body, 11, heat preservation shell, 111, oil inlet, 112, oil outlet, 113, heat preservation cavity, 12, pump shell, 121, resin inlet, 122, resin outlet, 123, first sealing component, 1231, fixed seat, 1232, mechanical seal, 124, second sealing component, 1241, sealing piece, 1242, spring seat, 1243, spring, 125, bearing seat, 126, shaft seal, 127, limiting piece, 13, rotating shaft, 14, rotor assembly, 141, outer rotor, 142, inner rotor, 2, motor, 3, base. DETAILED DESCRIPTION

[0022] Now the utility model makes detailed explanation in combination with the drawings. This drawing is the simplified schematic view, only with the schematic way shows the basic structure of the utility model, therefore it only shows the constitution related with the utility model.

[0023] As Figure 1 shown, the utility model provides a kind of delivery pump 100 for unsaturated polyester resin, for conveying unsaturated polyester resin in production and shipping process, the delivery pump 100 for unsaturated polyester resin includes the pump body 1 for conveying unsaturated polyester resin, is arranged in the motor 2 for driving pump body 1 in one side of pump body 1, and base 3 for supporting pump body 1 and motor 2 is arranged in the bottom of pump body 1 and motor 2.

[0024] As Figure 1 and Figure 2 shown, pump body 1 includes the pump shell 12 for containing conveying unsaturated polyester resin, sealing sleeve is arranged in the outer portion of pump shell 12 for the heat preservation shell 11 of heat preservation to the unsaturated polyester resin in pump shell 12, rotatably wear in the interior of pump shell 12 Rotating shaft 13, and rotor assembly 14 is sleeved on rotating shaft 13;Heat preservation shell 11 is fixedly connected with pump shell 12 or integrally formed, and the side wall bottom of heat preservation shell 11 and the top wall one side are respectively connected with the oil inlet pipe 111 and the oil outlet pipe 112 for conveying circulating heat conducting oil, and heat preservation cavity 113 for containing heat conducting oil is arranged between heat preservation shell 11 and pump shell 12, and oil inlet pipe 111 and oil outlet pipe 112 are all communicated with heat preservation cavity 113, and the heat conducting oil after heating is conveyed into heat preservation cavity 113 through oil inlet pipe 111 and exchanges heat to the resin in pump shell 12 to heat preservation, and the heat conducting oil after heat exchange is discharged again through oil outlet pipe 112 and is recycled.

[0025] As Figure 1 and Figure 2As shown, the side wall of the pump shell 12 is connected with a resin inlet pipe 121 for conveying unsaturated polyester resin, one end of the resin inlet pipe 121 extends to the outside of the heat preservation shell 11 through the side wall of the heat preservation shell 11, the side wall of the pump shell 12 near the resin inlet pipe 121 is connected with a resin outlet pipe 122 for discharging unsaturated polyester resin, one end of the resin outlet pipe 122 extends to the outside of the heat preservation shell 11 through the top wall of the heat preservation shell 11, the resin inlet pipe 121 and the resin outlet pipe 122 are connected with the inside of the pump shell 12; the inside of the pump shell 12 is provided with a first sealing assembly 123 and a second sealing assembly 124 matched with the rotating shaft 13, one end of the rotating shaft 13 extends to the lower side of the resin outlet pipe 122 through the second sealing assembly 124 and the first sealing assembly 123 in sequence, the rotor assembly 14 is fixedly sleeved on one end of the rotating shaft 13 below the resin outlet pipe 122 and the rotor assembly 14 leaves a gap with the first sealing assembly 123, one end of the rotating shaft 13 opposite to the rotor assembly 14 extends to the outside of the pump shell 12 through the side wall near the motor 13 of the pump shell 12 and is fixedly connected with the output shaft of the motor 2, the inside side wall of the pump shell 12 is provided with a bearing seat 125, a bearing matched with the rotating shaft is installed in the bearing seat 125 (not shown in the figure), the rotating shaft 13 is arranged in the bearing, and the outer side wall of the pump shell 12 is further fixedly provided with a shaft seal 126 for sealing the bearing, the shaft seal 126 is sleeved on one end of the rotating shaft 13 near the motor 13.

[0026] As shown in Figure 2 and Figure 3 , the first sealing assembly 123 includes a fixed seat 1231 fixedly arranged in the middle section of the inside of the pump shell 12 and a mechanical seal 1232 installed in the fixed seat 1231, the fixed seat 1231 is substantially in a circular ring structure, an installation groove (not shown in the figure) for accommodating the mechanical seal 1232 is formed in the inside of the fixed seat 1231, the mechanical seal 1232 is arranged in the installation groove and tightly abuts against the side wall of the rotating shaft 13 to prevent resin and tail gas from leaking; the second sealing assembly 124 includes a sealing piece 1241 tightly arranged on the first sealing assembly 123 for sealing the gap on the first sealing assembly 123, a spring seat 1242 fixedly arranged on the inside side wall of the pump shell 12, and a spring 1243 abutting between the sealing piece 1241 and the spring seat 1242, the spring 1243 is in a compressed state; the inside of the pump shell 12 is further provided with a limiting piece 127 for limiting the spring 1243 to prevent the spring 1243 from deviating, the limiting piece 127 is fixedly arranged on the side wall of the inside of the pump shell 12 and the limiting piece 127 is arranged between the second sealing assembly 124 and the rotating shaft 13.

[0027] As shown in Figure 2 and Figure 3As shown, the rotor assembly 14 includes an outer rotor 141 and an inner rotor 142 embedded in the outer rotor 141, when the motor 2 drives the rotating shaft 13 to rotate, the outer rotor 141 and the inner rotor 142 follow the rotating shaft 13 to rotate, so that the relative motion between the rotor assembly 14 and the pump shell 12 changes the working volume, the pump shell 12 discharges the resin by the extrusion of the rotating rotor assembly 14, and at the same time, space is left on the other side to form low pressure, and then the resin is continuously sucked to achieve the purpose of conveying the resin.

[0028] When conveying, the heated heat-conducting oil is conveyed into the heat preservation cavity 113 through the oil inlet pipe 111 to exchange heat with the resin in the pump shell 12 to heat preserve the resin, and the heat-exchanged heat-conducting oil is discharged through the oil outlet pipe 112 for recycling, the motor 2 is started, when the motor 2 drives the rotating shaft 13 to rotate, the outer rotor 141 and the inner rotor 142 follow the rotating shaft 13 to rotate, so that the relative motion between the rotor assembly 14 and the pump shell 12 changes the working volume, the pump shell 12 discharges the resin by the extrusion of the rotating rotor assembly 14, and at the same time, space is left on the other side to form low pressure, and then the resin is continuously sucked to achieve the purpose of conveying the resin.

[0029] The unsaturated polyester resin conveying pump 100 provided by the utility model includes a pump body 1 for conveying unsaturated polyester resin, a rotating shaft 13 is rotatably arranged in a pump shell 12 of the pump body 1, a first sealing assembly 123 and a second sealing assembly 124 that cooperate with the rotating shaft 13 are arranged in the pump shell 12, the first sealing assembly 123 includes a fixed seat 1231 fixedly arranged in the middle section of the pump shell 12 and a mechanical seal 1232 arranged in the fixed seat 1231, an installation groove for accommodating the mechanical seal 1232 is formed in the fixed seat 1231, the mechanical seal 1232 is arranged in the installation groove and tightly adheres to the side wall of the rotating shaft 13 to prevent resin and tail gas from leaking, the second sealing assembly 124 includes a sealing piece 1241 tightly adhered to the first sealing assembly 123 to seal the gap of the first sealing assembly 123, a spring seat 1242 fixedly arranged on the inner side wall of the pump shell 12 and a spring 1243 abutting between the sealing piece 1241 and the spring seat 1242, the spring 1243 is in a compressed state, the spring 1243 in the compressed state tightly presses and adheres the sealing piece 1241 to the surface of the fixed seat 1231 and the mechanical seal 1232, the cooperation of the mechanical seal 1232 and the sealing piece 1241 improves the sealing performance of the unsaturated polyester resin conveying pump 100, prevents mechanical seal leakage, avoids unorganized emission of part of tail gas, reduces environmental pollution and protects human health.

[0030] With the above ideal embodiment of the present application as the inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the scope of the present application. The technical scope of the present application is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A delivery pump for unsaturated polyester resins, characterized in that, The pump body comprises a pump shell, a rotating shaft is rotatably arranged in the pump shell, a first sealing assembly and a second sealing assembly are arranged in the pump shell, the first sealing assembly comprises a fixed seat arranged in the middle section of the pump shell and a mechanical seal arranged in the fixed seat, an installation groove is arranged in the fixed seat, the mechanical seal is arranged in the installation groove and tightly contacts with the side wall of the rotating shaft, the second sealing assembly comprises a sealing element tightly arranged on the first sealing assembly, a spring seat fixedly arranged on the side wall of the pump shell and a spring arranged between the sealing element and the spring seat, and the spring is in a compressed state.

2. The delivery pump for unsaturated polyester resins according to claim 1, characterized in that, The pump body further comprises a heat preservation shell arranged on the outside of the pump shell, the heat preservation shell is fixedly connected with or integrally formed with the pump shell, the side wall bottom and one side of the top wall of the heat preservation shell are connected with an oil inlet pipe and an oil outlet pipe respectively, and a heat preservation cavity is arranged between the heat preservation shell and the pump shell, the oil inlet pipe and the oil outlet pipe are both connected with the heat preservation cavity.

3. The delivery pump for unsaturated polyester resins according to claim 2, characterized in that, A resin inlet pipe is connected to the side wall of the pump shell, one end of the resin inlet pipe extends to the outside of the heat preservation shell through the side wall of the heat preservation shell, a resin outlet pipe is connected to the side of the top wall of the pump shell close to the resin inlet pipe, one end of the resin outlet pipe extends to the outside of the heat preservation shell through the top wall of the heat preservation shell, and the resin inlet pipe and the resin outlet pipe are both connected with the inside of the pump shell.

4. The delivery pump for unsaturated polyester resins according to claim 3, characterized in that, One end of the rotating shaft extends to the lower side of the resin outlet pipe through the second sealing assembly and the first sealing assembly.

5. The delivery pump for unsaturated polyester resins according to claim 4, characterized in that, The pump body further comprises a rotor assembly arranged on the rotating shaft, the rotor assembly comprises an outer rotor and an inner rotor embedded in the outer rotor, the rotor assembly is fixedly arranged on one end of the rotating shaft below the resin outlet pipe, and a gap is left between the rotor assembly and the first sealing assembly.

6. The delivery pump for unsaturated polyester resins according to claim 1, characterized in that, A limiting piece is arranged in the inside of the pump shell, the limiting piece is fixedly arranged on the side wall of the inside of the pump shell and is arranged between the second sealing assembly and the rotating shaft.

7. The delivery pump for unsaturated polyester resins according to claim 1, characterized in that, A bearing seat is arranged on the inside side wall of the pump shell, a bearing is arranged in the bearing seat, and the rotating shaft is arranged in the bearing.

8. The delivery pump for unsaturated polyester resins according to claim 1, characterized in that, A shaft seal is fixedly arranged on the outside side wall of the pump shell and is arranged on the rotating shaft.

9. The delivery pump for unsaturated polyester resins according to claim 1, characterized in that, The unsaturated polyester resin conveying pump further comprises a motor and a base, the motor is arranged on one side of the pump body, and the base is arranged at the bottom of the pump body and the motor.

10. The delivery pump for unsaturated polyester resins according to claim 9, characterized in that, One end of the rotating shaft extends to the outside of the pump shell and is fixedly connected with the output shaft of the motor through the side wall of the pump shell close to the motor.

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